/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 16:19:50,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 16:19:50,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 16:19:50,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-01 16:19:50,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-01 16:19:50,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-01 16:19:50,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-01 16:19:50,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-01 16:19:50,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-01 16:19:50,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-01 16:19:50,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-01 16:19:50,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-01 16:19:50,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-01 16:19:50,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-01 16:19:50,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-01 16:19:50,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-01 16:19:50,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-01 16:19:50,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-01 16:19:50,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-01 16:19:50,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-01 16:19:50,660 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-01 16:19:50,673 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 16:19:50,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 16:19:50,673 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 16:19:50,673 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 16:19:50,674 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 16:19:50,674 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 16:19:50,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 16:19:50,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 16:19:50,674 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 16:19:50,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 16:19:50,675 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 16:19:50,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 16:19:50,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 16:19:50,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 16:19:50,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 16:19:50,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 16:19:50,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 16:19:50,675 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 16:19:50,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 16:19:50,675 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 16:19:50,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 16:19:50,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 16:19:50,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 16:19:50,676 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 16:19:50,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 16:19:50,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 16:19:50,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 16:19:50,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 16:19:50,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 16:19:50,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 16:19:50,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 16:19:50,677 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 16:19:50,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 16:19:50,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 16:19:50,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 16:19:50,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 16:19:50,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 16:19:50,883 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-01 16:19:50,883 INFO L275 PluginConnector]: CDTParser initialized [2022-03-01 16:19:50,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c [2022-03-01 16:19:50,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22c12d992/317bee30e3644c9d892e9425a8192d14/FLAG6e56dc1a4 [2022-03-01 16:19:51,239 INFO L306 CDTParser]: Found 1 translation units. [2022-03-01 16:19:51,239 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c [2022-03-01 16:19:51,243 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22c12d992/317bee30e3644c9d892e9425a8192d14/FLAG6e56dc1a4 [2022-03-01 16:19:51,681 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22c12d992/317bee30e3644c9d892e9425a8192d14 [2022-03-01 16:19:51,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 16:19:51,685 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-01 16:19:51,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-01 16:19:51,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-01 16:19:51,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-01 16:19:51,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 04:19:51" (1/1) ... [2022-03-01 16:19:51,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a88d09e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:51, skipping insertion in model container [2022-03-01 16:19:51,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 04:19:51" (1/1) ... [2022-03-01 16:19:51,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-01 16:19:51,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-01 16:19:51,862 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c[2005,2018] [2022-03-01 16:19:51,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 16:19:51,870 INFO L203 MainTranslator]: Completed pre-run [2022-03-01 16:19:51,893 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c[2005,2018] [2022-03-01 16:19:51,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 16:19:51,901 INFO L208 MainTranslator]: Completed translation [2022-03-01 16:19:51,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:51 WrapperNode [2022-03-01 16:19:51,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-01 16:19:51,903 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 16:19:51,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 16:19:51,903 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 16:19:51,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:51" (1/1) ... [2022-03-01 16:19:51,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:51" (1/1) ... [2022-03-01 16:19:51,929 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-03-01 16:19:51,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 16:19:51,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 16:19:51,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 16:19:51,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 16:19:51,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:51" (1/1) ... [2022-03-01 16:19:51,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:51" (1/1) ... [2022-03-01 16:19:51,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:51" (1/1) ... [2022-03-01 16:19:51,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:51" (1/1) ... [2022-03-01 16:19:51,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:51" (1/1) ... [2022-03-01 16:19:51,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:51" (1/1) ... [2022-03-01 16:19:51,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:51" (1/1) ... [2022-03-01 16:19:51,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 16:19:51,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 16:19:51,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 16:19:51,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 16:19:51,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:51" (1/1) ... [2022-03-01 16:19:51,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 16:19:51,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:19:51,991 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-01 16:19:52,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-01 16:19:52,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-01 16:19:52,020 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-01 16:19:52,020 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-01 16:19:52,020 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-01 16:19:52,020 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-01 16:19:52,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-01 16:19:52,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-01 16:19:52,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-01 16:19:52,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-01 16:19:52,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-01 16:19:52,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 16:19:52,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 16:19:52,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-01 16:19:52,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-01 16:19:52,022 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 16:19:52,074 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 16:19:52,075 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 16:19:52,183 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 16:19:52,195 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 16:19:52,196 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-01 16:19:52,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 04:19:52 BoogieIcfgContainer [2022-03-01 16:19:52,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 16:19:52,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 16:19:52,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 16:19:52,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 16:19:52,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.03 04:19:51" (1/3) ... [2022-03-01 16:19:52,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95e41f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 04:19:52, skipping insertion in model container [2022-03-01 16:19:52,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:19:51" (2/3) ... [2022-03-01 16:19:52,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95e41f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 04:19:52, skipping insertion in model container [2022-03-01 16:19:52,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 04:19:52" (3/3) ... [2022-03-01 16:19:52,228 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2022-03-01 16:19:52,231 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 16:19:52,231 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 16:19:52,231 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 16:19:52,231 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 16:19:52,256 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,256 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,256 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,256 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,256 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,257 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,257 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,257 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,257 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,258 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,258 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,258 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,258 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,258 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,258 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,258 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,259 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,259 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,259 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,259 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,259 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,259 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,260 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,260 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,260 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,260 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,260 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,260 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,260 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,261 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,261 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,261 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,261 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,261 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,262 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,262 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,262 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,262 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,262 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,262 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,262 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,262 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,263 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,263 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,263 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,263 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,263 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,263 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,266 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,266 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,266 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,266 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,268 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,268 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,268 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,268 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:19:52,271 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-01 16:19:52,301 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 16:19:52,306 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-01 16:19:52,306 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-01 16:19:52,314 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 88 places, 87 transitions, 190 flow [2022-03-01 16:19:52,366 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 530 states, 529 states have (on average 2.667296786389414) internal successors, (1411), 529 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:52,369 INFO L276 IsEmpty]: Start isEmpty. Operand has 530 states, 529 states have (on average 2.667296786389414) internal successors, (1411), 529 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:52,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-01 16:19:52,381 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:52,381 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:52,382 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:52,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:52,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1367960911, now seen corresponding path program 1 times [2022-03-01 16:19:52,391 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:52,391 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869964382] [2022-03-01 16:19:52,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:52,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:52,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:52,528 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:52,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869964382] [2022-03-01 16:19:52,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869964382] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:52,528 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:52,529 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-01 16:19:52,530 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13138135] [2022-03-01 16:19:52,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:52,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-01 16:19:52,533 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:52,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-01 16:19:52,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 16:19:52,561 INFO L87 Difference]: Start difference. First operand has 530 states, 529 states have (on average 2.667296786389414) internal successors, (1411), 529 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:52,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:52,589 INFO L93 Difference]: Finished difference Result 530 states and 1320 transitions. [2022-03-01 16:19:52,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 16:19:52,591 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-01 16:19:52,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:52,604 INFO L225 Difference]: With dead ends: 530 [2022-03-01 16:19:52,604 INFO L226 Difference]: Without dead ends: 528 [2022-03-01 16:19:52,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 16:19:52,608 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:52,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:19:52,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-03-01 16:19:52,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2022-03-01 16:19:52,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 2.5009487666034156) internal successors, (1318), 527 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:52,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1318 transitions. [2022-03-01 16:19:52,666 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1318 transitions. Word has length 62 [2022-03-01 16:19:52,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:52,667 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 1318 transitions. [2022-03-01 16:19:52,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:52,667 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1318 transitions. [2022-03-01 16:19:52,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-01 16:19:52,670 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:52,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:52,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 16:19:52,671 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:52,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:52,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1425985199, now seen corresponding path program 1 times [2022-03-01 16:19:52,672 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:52,672 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953194762] [2022-03-01 16:19:52,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:52,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:53,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:53,050 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:53,051 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953194762] [2022-03-01 16:19:53,051 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953194762] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:53,051 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:53,051 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-01 16:19:53,052 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127464156] [2022-03-01 16:19:53,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:53,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 16:19:53,054 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:53,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 16:19:53,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-03-01 16:19:53,058 INFO L87 Difference]: Start difference. First operand 528 states and 1318 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:53,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:53,292 INFO L93 Difference]: Finished difference Result 830 states and 2079 transitions. [2022-03-01 16:19:53,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 16:19:53,292 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-01 16:19:53,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:53,296 INFO L225 Difference]: With dead ends: 830 [2022-03-01 16:19:53,296 INFO L226 Difference]: Without dead ends: 764 [2022-03-01 16:19:53,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:19:53,297 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 138 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:53,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 908 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:53,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-03-01 16:19:53,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 619. [2022-03-01 16:19:53,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 618 states have (on average 2.483818770226537) internal successors, (1535), 618 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:53,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1535 transitions. [2022-03-01 16:19:53,318 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1535 transitions. Word has length 62 [2022-03-01 16:19:53,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:53,319 INFO L470 AbstractCegarLoop]: Abstraction has 619 states and 1535 transitions. [2022-03-01 16:19:53,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:53,319 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1535 transitions. [2022-03-01 16:19:53,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-01 16:19:53,321 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:53,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:53,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 16:19:53,321 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:53,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:53,322 INFO L85 PathProgramCache]: Analyzing trace with hash 2050221647, now seen corresponding path program 2 times [2022-03-01 16:19:53,322 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:53,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021019464] [2022-03-01 16:19:53,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:53,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:53,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:53,565 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:53,565 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021019464] [2022-03-01 16:19:53,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021019464] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:53,565 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:53,565 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-01 16:19:53,565 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579478226] [2022-03-01 16:19:53,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:53,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 16:19:53,566 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:53,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 16:19:53,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-01 16:19:53,566 INFO L87 Difference]: Start difference. First operand 619 states and 1535 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:53,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:53,812 INFO L93 Difference]: Finished difference Result 738 states and 1846 transitions. [2022-03-01 16:19:53,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 16:19:53,813 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-01 16:19:53,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:53,816 INFO L225 Difference]: With dead ends: 738 [2022-03-01 16:19:53,816 INFO L226 Difference]: Without dead ends: 675 [2022-03-01 16:19:53,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:19:53,817 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 123 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:53,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 868 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:53,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2022-03-01 16:19:53,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 627. [2022-03-01 16:19:53,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 626 states have (on average 2.487220447284345) internal successors, (1557), 626 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:53,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 1557 transitions. [2022-03-01 16:19:53,834 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 1557 transitions. Word has length 62 [2022-03-01 16:19:53,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:53,835 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 1557 transitions. [2022-03-01 16:19:53,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:53,836 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 1557 transitions. [2022-03-01 16:19:53,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-01 16:19:53,839 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:53,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:53,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-01 16:19:53,839 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:53,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:53,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1996637171, now seen corresponding path program 3 times [2022-03-01 16:19:53,840 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:53,840 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460863460] [2022-03-01 16:19:53,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:53,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:54,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:54,068 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:54,069 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460863460] [2022-03-01 16:19:54,069 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460863460] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:54,069 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:54,069 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-01 16:19:54,069 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649032658] [2022-03-01 16:19:54,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:54,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 16:19:54,070 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:54,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 16:19:54,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-01 16:19:54,074 INFO L87 Difference]: Start difference. First operand 627 states and 1557 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:54,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:54,279 INFO L93 Difference]: Finished difference Result 741 states and 1848 transitions. [2022-03-01 16:19:54,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 16:19:54,280 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-01 16:19:54,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:54,283 INFO L225 Difference]: With dead ends: 741 [2022-03-01 16:19:54,283 INFO L226 Difference]: Without dead ends: 671 [2022-03-01 16:19:54,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:19:54,284 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 126 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:54,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 819 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:54,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-03-01 16:19:54,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 623. [2022-03-01 16:19:54,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 622 states have (on average 2.485530546623794) internal successors, (1546), 622 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:54,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1546 transitions. [2022-03-01 16:19:54,297 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1546 transitions. Word has length 62 [2022-03-01 16:19:54,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:54,297 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 1546 transitions. [2022-03-01 16:19:54,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:54,297 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1546 transitions. [2022-03-01 16:19:54,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-01 16:19:54,298 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:54,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:54,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-01 16:19:54,299 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:54,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:54,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1798753555, now seen corresponding path program 4 times [2022-03-01 16:19:54,299 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:54,299 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593362183] [2022-03-01 16:19:54,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:54,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:54,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:54,494 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:54,494 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593362183] [2022-03-01 16:19:54,494 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593362183] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:54,494 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:54,494 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-01 16:19:54,494 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598653697] [2022-03-01 16:19:54,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:54,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 16:19:54,495 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:54,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 16:19:54,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-01 16:19:54,495 INFO L87 Difference]: Start difference. First operand 623 states and 1546 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:54,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:54,708 INFO L93 Difference]: Finished difference Result 782 states and 1957 transitions. [2022-03-01 16:19:54,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 16:19:54,708 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-01 16:19:54,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:54,711 INFO L225 Difference]: With dead ends: 782 [2022-03-01 16:19:54,711 INFO L226 Difference]: Without dead ends: 716 [2022-03-01 16:19:54,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:19:54,713 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 132 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:54,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 968 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:54,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-03-01 16:19:54,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 623. [2022-03-01 16:19:54,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 622 states have (on average 2.485530546623794) internal successors, (1546), 622 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:54,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1546 transitions. [2022-03-01 16:19:54,725 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1546 transitions. Word has length 62 [2022-03-01 16:19:54,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:54,726 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 1546 transitions. [2022-03-01 16:19:54,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:54,726 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1546 transitions. [2022-03-01 16:19:54,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-01 16:19:54,727 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:54,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:54,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-01 16:19:54,728 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:54,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:54,728 INFO L85 PathProgramCache]: Analyzing trace with hash -21741301, now seen corresponding path program 5 times [2022-03-01 16:19:54,728 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:54,728 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323366760] [2022-03-01 16:19:54,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:54,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:54,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:54,870 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:54,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323366760] [2022-03-01 16:19:54,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323366760] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:54,870 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:54,870 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-01 16:19:54,870 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837234049] [2022-03-01 16:19:54,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:54,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-01 16:19:54,871 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:54,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-01 16:19:54,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-03-01 16:19:54,871 INFO L87 Difference]: Start difference. First operand 623 states and 1546 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:55,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:55,085 INFO L93 Difference]: Finished difference Result 838 states and 2145 transitions. [2022-03-01 16:19:55,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 16:19:55,086 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-01 16:19:55,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:55,089 INFO L225 Difference]: With dead ends: 838 [2022-03-01 16:19:55,089 INFO L226 Difference]: Without dead ends: 775 [2022-03-01 16:19:55,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:19:55,093 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 155 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:55,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 768 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:55,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-03-01 16:19:55,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 643. [2022-03-01 16:19:55,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 2.5062305295950154) internal successors, (1609), 642 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:55,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1609 transitions. [2022-03-01 16:19:55,107 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1609 transitions. Word has length 62 [2022-03-01 16:19:55,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:55,107 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1609 transitions. [2022-03-01 16:19:55,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:55,108 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1609 transitions. [2022-03-01 16:19:55,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-01 16:19:55,109 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:55,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:55,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-01 16:19:55,109 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:55,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:55,110 INFO L85 PathProgramCache]: Analyzing trace with hash -742951413, now seen corresponding path program 6 times [2022-03-01 16:19:55,110 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:55,110 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83851606] [2022-03-01 16:19:55,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:55,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:55,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:55,266 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:55,266 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83851606] [2022-03-01 16:19:55,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83851606] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:55,266 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:55,266 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-01 16:19:55,266 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474269734] [2022-03-01 16:19:55,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:55,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 16:19:55,267 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:55,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 16:19:55,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-03-01 16:19:55,268 INFO L87 Difference]: Start difference. First operand 643 states and 1609 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:55,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:55,457 INFO L93 Difference]: Finished difference Result 806 states and 2057 transitions. [2022-03-01 16:19:55,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 16:19:55,457 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-01 16:19:55,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:55,460 INFO L225 Difference]: With dead ends: 806 [2022-03-01 16:19:55,460 INFO L226 Difference]: Without dead ends: 743 [2022-03-01 16:19:55,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-03-01 16:19:55,461 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 105 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:55,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 657 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:55,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-03-01 16:19:55,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 647. [2022-03-01 16:19:55,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 2.501547987616099) internal successors, (1616), 646 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:55,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1616 transitions. [2022-03-01 16:19:55,474 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1616 transitions. Word has length 62 [2022-03-01 16:19:55,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:55,474 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 1616 transitions. [2022-03-01 16:19:55,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:55,475 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1616 transitions. [2022-03-01 16:19:55,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-01 16:19:55,476 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:55,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:55,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-01 16:19:55,476 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:55,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:55,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1967045189, now seen corresponding path program 7 times [2022-03-01 16:19:55,477 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:55,477 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043988058] [2022-03-01 16:19:55,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:55,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:55,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:55,603 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:55,603 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043988058] [2022-03-01 16:19:55,604 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043988058] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:55,604 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:55,604 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-01 16:19:55,604 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167848327] [2022-03-01 16:19:55,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:55,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 16:19:55,604 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:55,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 16:19:55,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-01 16:19:55,605 INFO L87 Difference]: Start difference. First operand 647 states and 1616 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:55,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:55,810 INFO L93 Difference]: Finished difference Result 809 states and 2059 transitions. [2022-03-01 16:19:55,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 16:19:55,810 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-01 16:19:55,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:55,813 INFO L225 Difference]: With dead ends: 809 [2022-03-01 16:19:55,813 INFO L226 Difference]: Without dead ends: 739 [2022-03-01 16:19:55,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:19:55,814 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 143 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:55,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 697 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:55,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-03-01 16:19:55,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 643. [2022-03-01 16:19:55,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 2.5) internal successors, (1605), 642 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:55,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1605 transitions. [2022-03-01 16:19:55,827 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1605 transitions. Word has length 62 [2022-03-01 16:19:55,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:55,827 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1605 transitions. [2022-03-01 16:19:55,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:55,827 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1605 transitions. [2022-03-01 16:19:55,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-01 16:19:55,828 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:55,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:55,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-01 16:19:55,829 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:55,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:55,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1153891209, now seen corresponding path program 8 times [2022-03-01 16:19:55,829 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:55,829 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522443371] [2022-03-01 16:19:55,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:55,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:55,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:55,974 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:55,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522443371] [2022-03-01 16:19:55,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522443371] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:55,975 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:55,975 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-01 16:19:55,975 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212648857] [2022-03-01 16:19:55,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:55,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 16:19:55,975 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:55,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 16:19:55,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-01 16:19:55,976 INFO L87 Difference]: Start difference. First operand 643 states and 1605 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:56,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:56,216 INFO L93 Difference]: Finished difference Result 810 states and 2064 transitions. [2022-03-01 16:19:56,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 16:19:56,216 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-01 16:19:56,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:56,219 INFO L225 Difference]: With dead ends: 810 [2022-03-01 16:19:56,219 INFO L226 Difference]: Without dead ends: 747 [2022-03-01 16:19:56,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:19:56,220 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 116 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:56,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 862 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:56,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-03-01 16:19:56,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 651. [2022-03-01 16:19:56,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 650 states have (on average 2.503076923076923) internal successors, (1627), 650 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:56,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1627 transitions. [2022-03-01 16:19:56,233 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1627 transitions. Word has length 62 [2022-03-01 16:19:56,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:56,233 INFO L470 AbstractCegarLoop]: Abstraction has 651 states and 1627 transitions. [2022-03-01 16:19:56,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:56,233 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1627 transitions. [2022-03-01 16:19:56,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-01 16:19:56,234 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:56,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:56,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-01 16:19:56,235 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:56,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:56,235 INFO L85 PathProgramCache]: Analyzing trace with hash -431079485, now seen corresponding path program 9 times [2022-03-01 16:19:56,235 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:56,235 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311552105] [2022-03-01 16:19:56,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:56,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:56,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:56,369 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:56,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311552105] [2022-03-01 16:19:56,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311552105] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:56,370 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:56,370 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-01 16:19:56,370 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267556190] [2022-03-01 16:19:56,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:56,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 16:19:56,370 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:56,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 16:19:56,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-01 16:19:56,371 INFO L87 Difference]: Start difference. First operand 651 states and 1627 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:56,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:56,595 INFO L93 Difference]: Finished difference Result 813 states and 2066 transitions. [2022-03-01 16:19:56,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 16:19:56,596 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-01 16:19:56,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:56,598 INFO L225 Difference]: With dead ends: 813 [2022-03-01 16:19:56,598 INFO L226 Difference]: Without dead ends: 743 [2022-03-01 16:19:56,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:19:56,599 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 163 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:56,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 839 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:56,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-03-01 16:19:56,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 647. [2022-03-01 16:19:56,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 2.501547987616099) internal successors, (1616), 646 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:56,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1616 transitions. [2022-03-01 16:19:56,612 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1616 transitions. Word has length 62 [2022-03-01 16:19:56,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:56,612 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 1616 transitions. [2022-03-01 16:19:56,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:56,612 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1616 transitions. [2022-03-01 16:19:56,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-01 16:19:56,613 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:56,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:56,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-01 16:19:56,614 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:56,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:56,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1717688431, now seen corresponding path program 10 times [2022-03-01 16:19:56,614 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:56,614 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928156342] [2022-03-01 16:19:56,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:56,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:56,739 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:56,739 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928156342] [2022-03-01 16:19:56,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928156342] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:56,739 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:56,739 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-01 16:19:56,739 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107752347] [2022-03-01 16:19:56,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:56,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 16:19:56,740 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:56,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 16:19:56,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-03-01 16:19:56,740 INFO L87 Difference]: Start difference. First operand 647 states and 1616 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:56,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:56,953 INFO L93 Difference]: Finished difference Result 854 states and 2175 transitions. [2022-03-01 16:19:56,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 16:19:56,953 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-01 16:19:56,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:56,956 INFO L225 Difference]: With dead ends: 854 [2022-03-01 16:19:56,956 INFO L226 Difference]: Without dead ends: 788 [2022-03-01 16:19:56,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:19:56,957 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 102 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:56,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 961 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:56,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-03-01 16:19:56,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 643. [2022-03-01 16:19:56,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 2.5) internal successors, (1605), 642 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:56,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1605 transitions. [2022-03-01 16:19:56,968 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1605 transitions. Word has length 62 [2022-03-01 16:19:56,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:56,969 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1605 transitions. [2022-03-01 16:19:56,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:56,969 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1605 transitions. [2022-03-01 16:19:56,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-01 16:19:56,970 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:56,970 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:56,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-01 16:19:56,970 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:56,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:56,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1996739535, now seen corresponding path program 11 times [2022-03-01 16:19:56,971 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:56,971 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869358619] [2022-03-01 16:19:56,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:56,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:57,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:57,107 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:57,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869358619] [2022-03-01 16:19:57,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869358619] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:57,107 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:57,107 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-01 16:19:57,107 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841486687] [2022-03-01 16:19:57,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:57,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 16:19:57,107 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:57,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 16:19:57,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-01 16:19:57,108 INFO L87 Difference]: Start difference. First operand 643 states and 1605 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:57,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:57,329 INFO L93 Difference]: Finished difference Result 882 states and 2234 transitions. [2022-03-01 16:19:57,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 16:19:57,330 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-01 16:19:57,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:57,333 INFO L225 Difference]: With dead ends: 882 [2022-03-01 16:19:57,333 INFO L226 Difference]: Without dead ends: 819 [2022-03-01 16:19:57,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:19:57,334 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 116 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:57,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 1003 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:57,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-03-01 16:19:57,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 683. [2022-03-01 16:19:57,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 2.5146627565982405) internal successors, (1715), 682 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:57,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1715 transitions. [2022-03-01 16:19:57,347 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1715 transitions. Word has length 62 [2022-03-01 16:19:57,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:57,347 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 1715 transitions. [2022-03-01 16:19:57,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:57,348 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1715 transitions. [2022-03-01 16:19:57,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-01 16:19:57,349 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:57,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:57,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-01 16:19:57,349 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:57,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:57,350 INFO L85 PathProgramCache]: Analyzing trace with hash -931759, now seen corresponding path program 12 times [2022-03-01 16:19:57,350 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:57,350 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510121298] [2022-03-01 16:19:57,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:57,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:57,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:57,478 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:57,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510121298] [2022-03-01 16:19:57,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510121298] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:57,478 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:57,478 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-01 16:19:57,478 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463652069] [2022-03-01 16:19:57,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:57,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 16:19:57,479 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:57,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 16:19:57,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-01 16:19:57,479 INFO L87 Difference]: Start difference. First operand 683 states and 1715 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:57,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:57,683 INFO L93 Difference]: Finished difference Result 850 states and 2154 transitions. [2022-03-01 16:19:57,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 16:19:57,684 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-01 16:19:57,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:57,686 INFO L225 Difference]: With dead ends: 850 [2022-03-01 16:19:57,687 INFO L226 Difference]: Without dead ends: 787 [2022-03-01 16:19:57,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:19:57,687 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 157 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:57,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 862 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:57,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-03-01 16:19:57,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 687. [2022-03-01 16:19:57,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 2.521865889212828) internal successors, (1730), 686 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:57,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1730 transitions. [2022-03-01 16:19:57,699 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1730 transitions. Word has length 62 [2022-03-01 16:19:57,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:57,700 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 1730 transitions. [2022-03-01 16:19:57,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:57,700 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1730 transitions. [2022-03-01 16:19:57,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-01 16:19:57,701 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:57,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:57,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-01 16:19:57,701 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:57,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:57,702 INFO L85 PathProgramCache]: Analyzing trace with hash -722141871, now seen corresponding path program 13 times [2022-03-01 16:19:57,702 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:57,702 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603243675] [2022-03-01 16:19:57,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:57,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:57,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:57,838 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:57,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603243675] [2022-03-01 16:19:57,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603243675] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:57,838 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:57,838 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-01 16:19:57,838 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852764646] [2022-03-01 16:19:57,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:57,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 16:19:57,839 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:57,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 16:19:57,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-01 16:19:57,839 INFO L87 Difference]: Start difference. First operand 687 states and 1730 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:58,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:58,037 INFO L93 Difference]: Finished difference Result 802 states and 2026 transitions. [2022-03-01 16:19:58,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 16:19:58,038 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-01 16:19:58,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:58,040 INFO L225 Difference]: With dead ends: 802 [2022-03-01 16:19:58,041 INFO L226 Difference]: Without dead ends: 739 [2022-03-01 16:19:58,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:19:58,041 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 122 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:58,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 854 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:58,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-03-01 16:19:58,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 691. [2022-03-01 16:19:58,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 690 states have (on average 2.517391304347826) internal successors, (1737), 690 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:58,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1737 transitions. [2022-03-01 16:19:58,054 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1737 transitions. Word has length 62 [2022-03-01 16:19:58,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:58,054 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 1737 transitions. [2022-03-01 16:19:58,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:58,054 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1737 transitions. [2022-03-01 16:19:58,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-01 16:19:58,055 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:58,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:58,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-01 16:19:58,056 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:58,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:58,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1987854731, now seen corresponding path program 14 times [2022-03-01 16:19:58,056 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:58,056 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212982548] [2022-03-01 16:19:58,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:58,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:58,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:58,180 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:58,180 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212982548] [2022-03-01 16:19:58,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212982548] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:58,180 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:58,180 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-01 16:19:58,180 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972882996] [2022-03-01 16:19:58,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:58,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 16:19:58,181 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:58,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 16:19:58,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-01 16:19:58,181 INFO L87 Difference]: Start difference. First operand 691 states and 1737 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:58,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:58,373 INFO L93 Difference]: Finished difference Result 805 states and 2028 transitions. [2022-03-01 16:19:58,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 16:19:58,373 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-01 16:19:58,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:58,376 INFO L225 Difference]: With dead ends: 805 [2022-03-01 16:19:58,376 INFO L226 Difference]: Without dead ends: 735 [2022-03-01 16:19:58,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:19:58,376 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 108 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:58,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 887 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:58,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-03-01 16:19:58,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 683. [2022-03-01 16:19:58,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 2.5146627565982405) internal successors, (1715), 682 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:58,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1715 transitions. [2022-03-01 16:19:58,400 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1715 transitions. Word has length 62 [2022-03-01 16:19:58,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:58,400 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 1715 transitions. [2022-03-01 16:19:58,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:58,401 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1715 transitions. [2022-03-01 16:19:58,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-01 16:19:58,402 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:58,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:58,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-01 16:19:58,402 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:58,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:58,403 INFO L85 PathProgramCache]: Analyzing trace with hash -127774901, now seen corresponding path program 15 times [2022-03-01 16:19:58,403 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:58,403 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703067003] [2022-03-01 16:19:58,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:58,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:58,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:58,519 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:58,519 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703067003] [2022-03-01 16:19:58,520 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703067003] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:58,520 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:58,520 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-01 16:19:58,520 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841658915] [2022-03-01 16:19:58,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:58,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 16:19:58,520 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:58,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 16:19:58,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-03-01 16:19:58,521 INFO L87 Difference]: Start difference. First operand 683 states and 1715 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:58,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:58,737 INFO L93 Difference]: Finished difference Result 910 states and 2347 transitions. [2022-03-01 16:19:58,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 16:19:58,738 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-01 16:19:58,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:58,741 INFO L225 Difference]: With dead ends: 910 [2022-03-01 16:19:58,741 INFO L226 Difference]: Without dead ends: 847 [2022-03-01 16:19:58,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:19:58,742 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 159 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:58,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 790 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:58,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-03-01 16:19:58,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 691. [2022-03-01 16:19:58,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 690 states have (on average 2.534782608695652) internal successors, (1749), 690 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:58,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1749 transitions. [2022-03-01 16:19:58,754 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1749 transitions. Word has length 62 [2022-03-01 16:19:58,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:58,754 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 1749 transitions. [2022-03-01 16:19:58,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:58,754 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1749 transitions. [2022-03-01 16:19:58,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-01 16:19:58,756 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:58,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:58,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-01 16:19:58,756 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:58,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:58,756 INFO L85 PathProgramCache]: Analyzing trace with hash -848985013, now seen corresponding path program 16 times [2022-03-01 16:19:58,757 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:58,757 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205635026] [2022-03-01 16:19:58,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:58,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:58,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:58,868 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:58,868 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205635026] [2022-03-01 16:19:58,868 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205635026] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:58,869 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:58,869 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-01 16:19:58,869 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930318089] [2022-03-01 16:19:58,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:58,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 16:19:58,869 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:58,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 16:19:58,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-01 16:19:58,870 INFO L87 Difference]: Start difference. First operand 691 states and 1749 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:59,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:59,059 INFO L93 Difference]: Finished difference Result 866 states and 2230 transitions. [2022-03-01 16:19:59,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 16:19:59,059 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-01 16:19:59,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:59,062 INFO L225 Difference]: With dead ends: 866 [2022-03-01 16:19:59,062 INFO L226 Difference]: Without dead ends: 803 [2022-03-01 16:19:59,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-03-01 16:19:59,063 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 123 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:59,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 714 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:59,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-03-01 16:19:59,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 695. [2022-03-01 16:19:59,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 694 states have (on average 2.5302593659942363) internal successors, (1756), 694 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:59,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1756 transitions. [2022-03-01 16:19:59,075 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1756 transitions. Word has length 62 [2022-03-01 16:19:59,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:59,076 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 1756 transitions. [2022-03-01 16:19:59,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:59,076 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1756 transitions. [2022-03-01 16:19:59,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-01 16:19:59,077 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:59,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:59,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-01 16:19:59,077 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:59,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:59,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1861011589, now seen corresponding path program 17 times [2022-03-01 16:19:59,078 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:59,078 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265780769] [2022-03-01 16:19:59,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:59,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:59,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:59,202 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:59,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265780769] [2022-03-01 16:19:59,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265780769] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:59,202 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:59,202 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-01 16:19:59,202 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782889258] [2022-03-01 16:19:59,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:59,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 16:19:59,203 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:59,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 16:19:59,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-01 16:19:59,203 INFO L87 Difference]: Start difference. First operand 695 states and 1756 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:59,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:59,416 INFO L93 Difference]: Finished difference Result 869 states and 2232 transitions. [2022-03-01 16:19:59,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 16:19:59,416 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-01 16:19:59,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:59,419 INFO L225 Difference]: With dead ends: 869 [2022-03-01 16:19:59,419 INFO L226 Difference]: Without dead ends: 799 [2022-03-01 16:19:59,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:19:59,420 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 106 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:59,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 830 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:59,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-03-01 16:19:59,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 687. [2022-03-01 16:19:59,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 2.5276967930029155) internal successors, (1734), 686 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:59,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1734 transitions. [2022-03-01 16:19:59,431 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1734 transitions. Word has length 62 [2022-03-01 16:19:59,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:59,431 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 1734 transitions. [2022-03-01 16:19:59,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:59,432 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1734 transitions. [2022-03-01 16:19:59,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-01 16:19:59,433 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:59,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:59,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-01 16:19:59,433 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:59,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:59,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1047857609, now seen corresponding path program 18 times [2022-03-01 16:19:59,434 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:59,434 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780646160] [2022-03-01 16:19:59,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:59,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:59,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:59,562 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:59,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780646160] [2022-03-01 16:19:59,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780646160] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:59,563 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:59,563 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-01 16:19:59,563 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686508359] [2022-03-01 16:19:59,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:59,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 16:19:59,563 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:59,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 16:19:59,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-01 16:19:59,564 INFO L87 Difference]: Start difference. First operand 687 states and 1734 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:59,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:19:59,785 INFO L93 Difference]: Finished difference Result 850 states and 2182 transitions. [2022-03-01 16:19:59,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 16:19:59,786 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-01 16:19:59,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:19:59,788 INFO L225 Difference]: With dead ends: 850 [2022-03-01 16:19:59,788 INFO L226 Difference]: Without dead ends: 787 [2022-03-01 16:19:59,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:19:59,789 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 103 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:19:59,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 867 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:19:59,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-03-01 16:19:59,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 695. [2022-03-01 16:19:59,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 694 states have (on average 2.5302593659942363) internal successors, (1756), 694 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:59,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1756 transitions. [2022-03-01 16:19:59,799 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1756 transitions. Word has length 62 [2022-03-01 16:19:59,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:19:59,799 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 1756 transitions. [2022-03-01 16:19:59,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:19:59,799 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1756 transitions. [2022-03-01 16:19:59,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-01 16:19:59,800 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:19:59,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:19:59,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-01 16:19:59,801 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:19:59,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:19:59,801 INFO L85 PathProgramCache]: Analyzing trace with hash -537113085, now seen corresponding path program 19 times [2022-03-01 16:19:59,801 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:19:59,801 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137717992] [2022-03-01 16:19:59,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:19:59,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:19:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:19:59,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:59,918 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:19:59,918 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137717992] [2022-03-01 16:19:59,918 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137717992] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:19:59,918 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:19:59,918 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-01 16:19:59,918 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878995636] [2022-03-01 16:19:59,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:19:59,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 16:19:59,919 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:59,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 16:19:59,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-01 16:19:59,919 INFO L87 Difference]: Start difference. First operand 695 states and 1756 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:00,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:00,114 INFO L93 Difference]: Finished difference Result 853 states and 2184 transitions. [2022-03-01 16:20:00,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 16:20:00,114 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-01 16:20:00,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:00,117 INFO L225 Difference]: With dead ends: 853 [2022-03-01 16:20:00,117 INFO L226 Difference]: Without dead ends: 783 [2022-03-01 16:20:00,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:20:00,118 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 123 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:00,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 737 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:20:00,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2022-03-01 16:20:00,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 691. [2022-03-01 16:20:00,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 690 states have (on average 2.528985507246377) internal successors, (1745), 690 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:00,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1745 transitions. [2022-03-01 16:20:00,128 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1745 transitions. Word has length 62 [2022-03-01 16:20:00,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:00,128 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 1745 transitions. [2022-03-01 16:20:00,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:00,129 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1745 transitions. [2022-03-01 16:20:00,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-01 16:20:00,130 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:00,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:00,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-01 16:20:00,130 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:00,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:00,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1823722031, now seen corresponding path program 20 times [2022-03-01 16:20:00,130 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:00,131 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752369099] [2022-03-01 16:20:00,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:00,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:00,242 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:00,243 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752369099] [2022-03-01 16:20:00,243 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752369099] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:00,243 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:00,243 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-01 16:20:00,243 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421283511] [2022-03-01 16:20:00,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:00,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 16:20:00,243 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:00,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 16:20:00,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-03-01 16:20:00,244 INFO L87 Difference]: Start difference. First operand 691 states and 1745 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:00,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:00,461 INFO L93 Difference]: Finished difference Result 894 states and 2293 transitions. [2022-03-01 16:20:00,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 16:20:00,462 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-01 16:20:00,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:00,465 INFO L225 Difference]: With dead ends: 894 [2022-03-01 16:20:00,465 INFO L226 Difference]: Without dead ends: 828 [2022-03-01 16:20:00,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:20:00,465 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 113 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:00,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 966 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:20:00,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2022-03-01 16:20:00,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 683. [2022-03-01 16:20:00,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 2.5146627565982405) internal successors, (1715), 682 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:00,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1715 transitions. [2022-03-01 16:20:00,475 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1715 transitions. Word has length 62 [2022-03-01 16:20:00,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:00,476 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 1715 transitions. [2022-03-01 16:20:00,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:00,476 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1715 transitions. [2022-03-01 16:20:00,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-01 16:20:00,477 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:00,477 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:00,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-01 16:20:00,477 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:00,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:00,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1062789427, now seen corresponding path program 1 times [2022-03-01 16:20:00,478 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:00,478 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009269887] [2022-03-01 16:20:00,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:00,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:00,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:00,498 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:00,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009269887] [2022-03-01 16:20:00,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009269887] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:00,498 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:00,498 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 16:20:00,499 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135994184] [2022-03-01 16:20:00,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:00,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 16:20:00,499 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:00,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 16:20:00,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-01 16:20:00,499 INFO L87 Difference]: Start difference. First operand 683 states and 1715 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:00,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:00,550 INFO L93 Difference]: Finished difference Result 987 states and 2483 transitions. [2022-03-01 16:20:00,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 16:20:00,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-01 16:20:00,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:00,553 INFO L225 Difference]: With dead ends: 987 [2022-03-01 16:20:00,553 INFO L226 Difference]: Without dead ends: 906 [2022-03-01 16:20:00,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-01 16:20:00,553 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 99 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:00,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 330 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:20:00,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2022-03-01 16:20:00,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 621. [2022-03-01 16:20:00,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 620 states have (on average 2.5274193548387096) internal successors, (1567), 620 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:00,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 1567 transitions. [2022-03-01 16:20:00,563 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 1567 transitions. Word has length 66 [2022-03-01 16:20:00,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:00,564 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 1567 transitions. [2022-03-01 16:20:00,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:00,564 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 1567 transitions. [2022-03-01 16:20:00,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-01 16:20:00,565 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:00,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:00,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-01 16:20:00,565 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:00,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:00,566 INFO L85 PathProgramCache]: Analyzing trace with hash -80553619, now seen corresponding path program 1 times [2022-03-01 16:20:00,566 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:00,566 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605089932] [2022-03-01 16:20:00,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:00,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:00,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:00,585 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:00,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605089932] [2022-03-01 16:20:00,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605089932] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:00,585 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:00,585 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 16:20:00,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788947248] [2022-03-01 16:20:00,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:00,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 16:20:00,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:00,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 16:20:00,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-01 16:20:00,586 INFO L87 Difference]: Start difference. First operand 621 states and 1567 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:00,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:00,642 INFO L93 Difference]: Finished difference Result 949 states and 2424 transitions. [2022-03-01 16:20:00,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 16:20:00,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-01 16:20:00,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:00,645 INFO L225 Difference]: With dead ends: 949 [2022-03-01 16:20:00,645 INFO L226 Difference]: Without dead ends: 949 [2022-03-01 16:20:00,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-01 16:20:00,646 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 128 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:00,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 334 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:20:00,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2022-03-01 16:20:00,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 637. [2022-03-01 16:20:00,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 636 states have (on average 2.539308176100629) internal successors, (1615), 636 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:00,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1615 transitions. [2022-03-01 16:20:00,665 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1615 transitions. Word has length 66 [2022-03-01 16:20:00,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:00,666 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 1615 transitions. [2022-03-01 16:20:00,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:00,666 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1615 transitions. [2022-03-01 16:20:00,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-01 16:20:00,667 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:00,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:00,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-01 16:20:00,667 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:00,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:00,668 INFO L85 PathProgramCache]: Analyzing trace with hash 626763185, now seen corresponding path program 2 times [2022-03-01 16:20:00,668 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:00,668 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724527458] [2022-03-01 16:20:00,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:00,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:00,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:00,689 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:00,689 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724527458] [2022-03-01 16:20:00,689 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724527458] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:00,689 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:00,689 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 16:20:00,690 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054479675] [2022-03-01 16:20:00,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:00,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 16:20:00,690 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:00,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 16:20:00,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-01 16:20:00,690 INFO L87 Difference]: Start difference. First operand 637 states and 1615 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:00,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:00,751 INFO L93 Difference]: Finished difference Result 1128 states and 2881 transitions. [2022-03-01 16:20:00,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 16:20:00,751 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-01 16:20:00,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:00,760 INFO L225 Difference]: With dead ends: 1128 [2022-03-01 16:20:00,760 INFO L226 Difference]: Without dead ends: 1112 [2022-03-01 16:20:00,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-01 16:20:00,761 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 133 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:00,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 317 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:20:00,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2022-03-01 16:20:00,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 641. [2022-03-01 16:20:00,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 2.546875) internal successors, (1630), 640 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:00,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1630 transitions. [2022-03-01 16:20:00,778 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1630 transitions. Word has length 66 [2022-03-01 16:20:00,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:00,778 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 1630 transitions. [2022-03-01 16:20:00,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:00,779 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1630 transitions. [2022-03-01 16:20:00,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-01 16:20:00,780 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:00,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:00,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-01 16:20:00,780 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:00,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:00,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1732914939, now seen corresponding path program 2 times [2022-03-01 16:20:00,781 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:00,781 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929373279] [2022-03-01 16:20:00,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:00,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:00,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:00,803 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:00,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929373279] [2022-03-01 16:20:00,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929373279] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:00,803 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:00,803 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 16:20:00,804 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734605488] [2022-03-01 16:20:00,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:00,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 16:20:00,804 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:00,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 16:20:00,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-01 16:20:00,804 INFO L87 Difference]: Start difference. First operand 641 states and 1630 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:00,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:00,867 INFO L93 Difference]: Finished difference Result 1299 states and 3298 transitions. [2022-03-01 16:20:00,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 16:20:00,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-01 16:20:00,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:00,869 INFO L225 Difference]: With dead ends: 1299 [2022-03-01 16:20:00,870 INFO L226 Difference]: Without dead ends: 1299 [2022-03-01 16:20:00,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-01 16:20:00,870 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 146 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:00,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 356 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:20:00,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2022-03-01 16:20:00,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 657. [2022-03-01 16:20:00,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 2.557926829268293) internal successors, (1678), 656 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:00,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1678 transitions. [2022-03-01 16:20:00,881 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1678 transitions. Word has length 66 [2022-03-01 16:20:00,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:00,882 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 1678 transitions. [2022-03-01 16:20:00,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:00,882 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1678 transitions. [2022-03-01 16:20:00,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-01 16:20:00,883 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:00,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:00,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-01 16:20:00,883 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:00,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:00,884 INFO L85 PathProgramCache]: Analyzing trace with hash 2046949573, now seen corresponding path program 3 times [2022-03-01 16:20:00,884 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:00,884 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084758774] [2022-03-01 16:20:00,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:00,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:00,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:00,906 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:00,906 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084758774] [2022-03-01 16:20:00,907 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084758774] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:00,907 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:00,907 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 16:20:00,907 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319730358] [2022-03-01 16:20:00,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:00,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 16:20:00,907 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:00,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 16:20:00,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-01 16:20:00,908 INFO L87 Difference]: Start difference. First operand 657 states and 1678 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:00,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:00,970 INFO L93 Difference]: Finished difference Result 1084 states and 2770 transitions. [2022-03-01 16:20:00,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 16:20:00,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-01 16:20:00,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:00,973 INFO L225 Difference]: With dead ends: 1084 [2022-03-01 16:20:00,973 INFO L226 Difference]: Without dead ends: 1065 [2022-03-01 16:20:00,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-01 16:20:00,973 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 104 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:00,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 321 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:20:00,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2022-03-01 16:20:00,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 657. [2022-03-01 16:20:00,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 2.551829268292683) internal successors, (1674), 656 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:00,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1674 transitions. [2022-03-01 16:20:00,984 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1674 transitions. Word has length 66 [2022-03-01 16:20:00,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:00,985 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 1674 transitions. [2022-03-01 16:20:00,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:00,985 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1674 transitions. [2022-03-01 16:20:00,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-01 16:20:00,986 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:00,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:00,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-01 16:20:00,987 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:00,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:00,987 INFO L85 PathProgramCache]: Analyzing trace with hash 236497677, now seen corresponding path program 3 times [2022-03-01 16:20:00,987 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:00,987 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584699602] [2022-03-01 16:20:00,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:00,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:01,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:01,007 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:01,007 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584699602] [2022-03-01 16:20:01,007 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584699602] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:01,007 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:01,007 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 16:20:01,007 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138910461] [2022-03-01 16:20:01,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:01,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 16:20:01,008 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:01,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 16:20:01,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-01 16:20:01,008 INFO L87 Difference]: Start difference. First operand 657 states and 1674 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:01,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:01,077 INFO L93 Difference]: Finished difference Result 1112 states and 2849 transitions. [2022-03-01 16:20:01,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 16:20:01,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-01 16:20:01,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:01,080 INFO L225 Difference]: With dead ends: 1112 [2022-03-01 16:20:01,080 INFO L226 Difference]: Without dead ends: 1112 [2022-03-01 16:20:01,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-01 16:20:01,080 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 96 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:01,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 338 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:20:01,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2022-03-01 16:20:01,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 657. [2022-03-01 16:20:01,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 2.551829268292683) internal successors, (1674), 656 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:01,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1674 transitions. [2022-03-01 16:20:01,091 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1674 transitions. Word has length 66 [2022-03-01 16:20:01,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:01,091 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 1674 transitions. [2022-03-01 16:20:01,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:01,091 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1674 transitions. [2022-03-01 16:20:01,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-01 16:20:01,092 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:01,092 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:01,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-01 16:20:01,093 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:01,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:01,093 INFO L85 PathProgramCache]: Analyzing trace with hash -228837771, now seen corresponding path program 4 times [2022-03-01 16:20:01,093 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:01,093 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001618384] [2022-03-01 16:20:01,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:01,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:01,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:01,114 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:01,114 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001618384] [2022-03-01 16:20:01,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001618384] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:01,114 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:01,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 16:20:01,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793583706] [2022-03-01 16:20:01,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:01,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 16:20:01,115 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:01,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 16:20:01,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-01 16:20:01,115 INFO L87 Difference]: Start difference. First operand 657 states and 1674 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:01,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:01,172 INFO L93 Difference]: Finished difference Result 967 states and 2471 transitions. [2022-03-01 16:20:01,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 16:20:01,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-01 16:20:01,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:01,174 INFO L225 Difference]: With dead ends: 967 [2022-03-01 16:20:01,174 INFO L226 Difference]: Without dead ends: 919 [2022-03-01 16:20:01,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-01 16:20:01,175 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 102 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:01,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 308 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:20:01,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-03-01 16:20:01,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 625. [2022-03-01 16:20:01,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.5416666666666665) internal successors, (1586), 624 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:01,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1586 transitions. [2022-03-01 16:20:01,185 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1586 transitions. Word has length 66 [2022-03-01 16:20:01,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:01,185 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1586 transitions. [2022-03-01 16:20:01,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:01,185 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1586 transitions. [2022-03-01 16:20:01,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-01 16:20:01,186 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:01,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:01,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-01 16:20:01,187 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:01,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:01,188 INFO L85 PathProgramCache]: Analyzing trace with hash -583910423, now seen corresponding path program 4 times [2022-03-01 16:20:01,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:01,188 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413105106] [2022-03-01 16:20:01,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:01,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:01,209 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:01,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413105106] [2022-03-01 16:20:01,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413105106] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:01,209 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:01,209 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 16:20:01,209 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518653291] [2022-03-01 16:20:01,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:01,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 16:20:01,209 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:01,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 16:20:01,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-01 16:20:01,210 INFO L87 Difference]: Start difference. First operand 625 states and 1586 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:01,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:01,275 INFO L93 Difference]: Finished difference Result 959 states and 2469 transitions. [2022-03-01 16:20:01,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 16:20:01,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-01 16:20:01,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:01,277 INFO L225 Difference]: With dead ends: 959 [2022-03-01 16:20:01,277 INFO L226 Difference]: Without dead ends: 959 [2022-03-01 16:20:01,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-01 16:20:01,277 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 111 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:01,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 342 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:20:01,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-03-01 16:20:01,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 625. [2022-03-01 16:20:01,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.5416666666666665) internal successors, (1586), 624 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:01,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1586 transitions. [2022-03-01 16:20:01,287 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1586 transitions. Word has length 66 [2022-03-01 16:20:01,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:01,287 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1586 transitions. [2022-03-01 16:20:01,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:01,287 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1586 transitions. [2022-03-01 16:20:01,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-01 16:20:01,288 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:01,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:01,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-01 16:20:01,289 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:01,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:01,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1624806385, now seen corresponding path program 5 times [2022-03-01 16:20:01,289 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:01,289 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836573374] [2022-03-01 16:20:01,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:01,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:01,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:01,308 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:01,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836573374] [2022-03-01 16:20:01,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836573374] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:01,308 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:01,308 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 16:20:01,308 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028335306] [2022-03-01 16:20:01,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:01,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 16:20:01,308 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:01,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 16:20:01,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-01 16:20:01,309 INFO L87 Difference]: Start difference. First operand 625 states and 1586 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:01,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:01,377 INFO L93 Difference]: Finished difference Result 1086 states and 2779 transitions. [2022-03-01 16:20:01,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 16:20:01,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-01 16:20:01,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:01,379 INFO L225 Difference]: With dead ends: 1086 [2022-03-01 16:20:01,379 INFO L226 Difference]: Without dead ends: 1070 [2022-03-01 16:20:01,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-01 16:20:01,380 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 116 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:01,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 311 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:20:01,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2022-03-01 16:20:01,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 625. [2022-03-01 16:20:01,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.53525641025641) internal successors, (1582), 624 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:01,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1582 transitions. [2022-03-01 16:20:01,398 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1582 transitions. Word has length 66 [2022-03-01 16:20:01,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:01,398 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1582 transitions. [2022-03-01 16:20:01,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:01,398 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1582 transitions. [2022-03-01 16:20:01,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-01 16:20:01,399 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:01,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:01,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-01 16:20:01,400 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:01,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:01,400 INFO L85 PathProgramCache]: Analyzing trace with hash -734871739, now seen corresponding path program 5 times [2022-03-01 16:20:01,400 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:01,400 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825986103] [2022-03-01 16:20:01,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:01,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:01,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:01,418 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:01,418 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825986103] [2022-03-01 16:20:01,418 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825986103] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:01,418 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:01,418 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 16:20:01,419 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977046960] [2022-03-01 16:20:01,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:01,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 16:20:01,419 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:01,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 16:20:01,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-01 16:20:01,419 INFO L87 Difference]: Start difference. First operand 625 states and 1582 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:01,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:01,492 INFO L93 Difference]: Finished difference Result 1257 states and 3196 transitions. [2022-03-01 16:20:01,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 16:20:01,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-01 16:20:01,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:01,494 INFO L225 Difference]: With dead ends: 1257 [2022-03-01 16:20:01,494 INFO L226 Difference]: Without dead ends: 1257 [2022-03-01 16:20:01,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-01 16:20:01,495 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 132 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:01,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 333 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:20:01,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2022-03-01 16:20:01,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 625. [2022-03-01 16:20:01,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.53525641025641) internal successors, (1582), 624 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:01,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1582 transitions. [2022-03-01 16:20:01,506 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1582 transitions. Word has length 66 [2022-03-01 16:20:01,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:01,506 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1582 transitions. [2022-03-01 16:20:01,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:01,506 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1582 transitions. [2022-03-01 16:20:01,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-01 16:20:01,507 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:01,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:01,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-01 16:20:01,508 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:01,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:01,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1249974523, now seen corresponding path program 6 times [2022-03-01 16:20:01,508 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:01,508 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914716298] [2022-03-01 16:20:01,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:01,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:01,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:01,528 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:01,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914716298] [2022-03-01 16:20:01,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914716298] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:01,528 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:01,528 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 16:20:01,529 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466687877] [2022-03-01 16:20:01,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:01,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 16:20:01,529 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:01,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 16:20:01,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-01 16:20:01,529 INFO L87 Difference]: Start difference. First operand 625 states and 1582 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:01,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:01,596 INFO L93 Difference]: Finished difference Result 1018 states and 2598 transitions. [2022-03-01 16:20:01,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 16:20:01,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-01 16:20:01,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:01,599 INFO L225 Difference]: With dead ends: 1018 [2022-03-01 16:20:01,599 INFO L226 Difference]: Without dead ends: 999 [2022-03-01 16:20:01,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-01 16:20:01,599 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 124 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:01,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 302 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:20:01,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-03-01 16:20:01,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 625. [2022-03-01 16:20:01,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.5288461538461537) internal successors, (1578), 624 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:01,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1578 transitions. [2022-03-01 16:20:01,610 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1578 transitions. Word has length 66 [2022-03-01 16:20:01,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:01,610 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1578 transitions. [2022-03-01 16:20:01,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:01,610 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1578 transitions. [2022-03-01 16:20:01,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-01 16:20:01,611 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:01,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:01,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-01 16:20:01,611 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:01,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:01,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1234540877, now seen corresponding path program 6 times [2022-03-01 16:20:01,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:01,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476869454] [2022-03-01 16:20:01,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:01,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:01,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:01,631 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:01,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476869454] [2022-03-01 16:20:01,631 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476869454] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:20:01,631 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:20:01,632 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 16:20:01,632 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492631358] [2022-03-01 16:20:01,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:20:01,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 16:20:01,632 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:01,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 16:20:01,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-01 16:20:01,632 INFO L87 Difference]: Start difference. First operand 625 states and 1578 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:01,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:01,699 INFO L93 Difference]: Finished difference Result 862 states and 2198 transitions. [2022-03-01 16:20:01,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 16:20:01,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-01 16:20:01,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:01,701 INFO L225 Difference]: With dead ends: 862 [2022-03-01 16:20:01,702 INFO L226 Difference]: Without dead ends: 862 [2022-03-01 16:20:01,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-01 16:20:01,702 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 87 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:01,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 312 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:20:01,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2022-03-01 16:20:01,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 621. [2022-03-01 16:20:01,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 620 states have (on average 2.5274193548387096) internal successors, (1567), 620 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:01,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 1567 transitions. [2022-03-01 16:20:01,712 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 1567 transitions. Word has length 66 [2022-03-01 16:20:01,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:01,712 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 1567 transitions. [2022-03-01 16:20:01,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:01,712 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 1567 transitions. [2022-03-01 16:20:01,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:20:01,713 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:01,713 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:01,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-01 16:20:01,713 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:01,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:01,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1550680847, now seen corresponding path program 1 times [2022-03-01 16:20:01,714 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:01,714 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967661944] [2022-03-01 16:20:01,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:01,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:01,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:01,853 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:01,853 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967661944] [2022-03-01 16:20:01,853 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967661944] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:01,853 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090389408] [2022-03-01 16:20:01,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:01,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:01,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:01,855 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:01,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-01 16:20:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:01,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:20:01,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:02,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:20:03,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:03,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090389408] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:20:03,004 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:20:03,005 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:20:03,005 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968926074] [2022-03-01 16:20:03,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:20:03,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:20:03,005 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:03,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:20:03,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=995, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:20:03,006 INFO L87 Difference]: Start difference. First operand 621 states and 1567 transitions. Second operand has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:04,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:04,679 INFO L93 Difference]: Finished difference Result 1332 states and 3500 transitions. [2022-03-01 16:20:04,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-01 16:20:04,680 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:20:04,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:04,682 INFO L225 Difference]: With dead ends: 1332 [2022-03-01 16:20:04,682 INFO L226 Difference]: Without dead ends: 1257 [2022-03-01 16:20:04,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=766, Invalid=4636, Unknown=0, NotChecked=0, Total=5402 [2022-03-01 16:20:04,684 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 537 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:04,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 2574 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:20:04,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2022-03-01 16:20:04,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 809. [2022-03-01 16:20:04,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 808 states have (on average 2.573019801980198) internal successors, (2079), 808 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:04,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 2079 transitions. [2022-03-01 16:20:04,697 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 2079 transitions. Word has length 70 [2022-03-01 16:20:04,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:04,697 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 2079 transitions. [2022-03-01 16:20:04,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:04,697 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 2079 transitions. [2022-03-01 16:20:04,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:20:04,699 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:04,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:04,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-01 16:20:04,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-03-01 16:20:04,915 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:04,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:04,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1707982699, now seen corresponding path program 2 times [2022-03-01 16:20:04,916 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:04,916 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424815179] [2022-03-01 16:20:04,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:04,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:05,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:05,056 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:05,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424815179] [2022-03-01 16:20:05,056 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424815179] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:05,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126222158] [2022-03-01 16:20:05,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:20:05,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:05,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:05,060 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:05,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-01 16:20:05,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:20:05,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:20:05,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:20:05,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:05,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:20:06,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:06,077 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126222158] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:20:06,077 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:20:06,077 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:20:06,077 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414291606] [2022-03-01 16:20:06,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:20:06,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:20:06,078 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:06,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:20:06,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=992, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:20:06,079 INFO L87 Difference]: Start difference. First operand 809 states and 2079 transitions. Second operand has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:08,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:08,297 INFO L93 Difference]: Finished difference Result 1555 states and 4131 transitions. [2022-03-01 16:20:08,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-01 16:20:08,297 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:20:08,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:08,300 INFO L225 Difference]: With dead ends: 1555 [2022-03-01 16:20:08,300 INFO L226 Difference]: Without dead ends: 1480 [2022-03-01 16:20:08,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2481 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1151, Invalid=7039, Unknown=0, NotChecked=0, Total=8190 [2022-03-01 16:20:08,302 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 611 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 2758 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:08,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 2758 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:20:08,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2022-03-01 16:20:08,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 837. [2022-03-01 16:20:08,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 836 states have (on average 2.588516746411483) internal successors, (2164), 836 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:08,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 2164 transitions. [2022-03-01 16:20:08,315 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 2164 transitions. Word has length 70 [2022-03-01 16:20:08,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:08,316 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 2164 transitions. [2022-03-01 16:20:08,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:08,316 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 2164 transitions. [2022-03-01 16:20:08,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:20:08,317 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:08,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:08,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-01 16:20:08,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-03-01 16:20:08,535 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:08,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:08,536 INFO L85 PathProgramCache]: Analyzing trace with hash -4106897, now seen corresponding path program 3 times [2022-03-01 16:20:08,536 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:08,536 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783505890] [2022-03-01 16:20:08,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:08,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:08,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:08,690 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:08,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783505890] [2022-03-01 16:20:08,690 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783505890] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:08,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572591954] [2022-03-01 16:20:08,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:20:08,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:08,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:08,692 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:08,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-01 16:20:08,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 16:20:08,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:20:08,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:20:08,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:09,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:09,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:20:09,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:09,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572591954] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:20:09,727 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:20:09,727 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:20:09,728 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262515728] [2022-03-01 16:20:09,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:20:09,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:20:09,728 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:09,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:20:09,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:20:09,729 INFO L87 Difference]: Start difference. First operand 837 states and 2164 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:11,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:11,543 INFO L93 Difference]: Finished difference Result 1564 states and 4070 transitions. [2022-03-01 16:20:11,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-01 16:20:11,543 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:20:11,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:11,546 INFO L225 Difference]: With dead ends: 1564 [2022-03-01 16:20:11,546 INFO L226 Difference]: Without dead ends: 1438 [2022-03-01 16:20:11,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1901 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=915, Invalid=5727, Unknown=0, NotChecked=0, Total=6642 [2022-03-01 16:20:11,548 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 530 mSDsluCounter, 2685 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:11,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 2700 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:20:11,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2022-03-01 16:20:11,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 849. [2022-03-01 16:20:11,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 848 states have (on average 2.5908018867924527) internal successors, (2197), 848 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:11,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 2197 transitions. [2022-03-01 16:20:11,575 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 2197 transitions. Word has length 70 [2022-03-01 16:20:11,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:11,575 INFO L470 AbstractCegarLoop]: Abstraction has 849 states and 2197 transitions. [2022-03-01 16:20:11,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:11,575 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 2197 transitions. [2022-03-01 16:20:11,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:20:11,577 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:11,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:11,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-01 16:20:11,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:11,792 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:11,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:11,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1589077591, now seen corresponding path program 4 times [2022-03-01 16:20:11,792 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:11,792 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78706560] [2022-03-01 16:20:11,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:11,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:11,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:11,930 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:11,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78706560] [2022-03-01 16:20:11,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78706560] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:11,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783614176] [2022-03-01 16:20:11,930 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:20:11,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:11,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:11,931 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:11,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-01 16:20:11,984 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:20:11,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:20:11,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-01 16:20:11,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:12,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:12,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:20:12,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:12,755 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783614176] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:20:12,755 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:20:12,755 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2022-03-01 16:20:12,755 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200812678] [2022-03-01 16:20:12,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:20:12,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 16:20:12,755 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:12,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 16:20:12,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2022-03-01 16:20:12,756 INFO L87 Difference]: Start difference. First operand 849 states and 2197 transitions. Second operand has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:13,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:13,864 INFO L93 Difference]: Finished difference Result 1357 states and 3523 transitions. [2022-03-01 16:20:13,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-01 16:20:13,865 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:20:13,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:13,867 INFO L225 Difference]: With dead ends: 1357 [2022-03-01 16:20:13,867 INFO L226 Difference]: Without dead ends: 1287 [2022-03-01 16:20:13,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1446 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=829, Invalid=4573, Unknown=0, NotChecked=0, Total=5402 [2022-03-01 16:20:13,869 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 395 mSDsluCounter, 2463 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 2515 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:13,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 2515 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:20:13,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2022-03-01 16:20:13,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 929. [2022-03-01 16:20:13,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 928 states have (on average 2.6088362068965516) internal successors, (2421), 928 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:13,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 2421 transitions. [2022-03-01 16:20:13,883 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 2421 transitions. Word has length 70 [2022-03-01 16:20:13,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:13,883 INFO L470 AbstractCegarLoop]: Abstraction has 929 states and 2421 transitions. [2022-03-01 16:20:13,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:13,883 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 2421 transitions. [2022-03-01 16:20:13,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:20:13,885 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:13,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:13,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-01 16:20:14,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-03-01 16:20:14,099 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:14,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:14,100 INFO L85 PathProgramCache]: Analyzing trace with hash 742294319, now seen corresponding path program 5 times [2022-03-01 16:20:14,100 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:14,100 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122589373] [2022-03-01 16:20:14,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:14,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:14,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:14,220 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:14,220 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122589373] [2022-03-01 16:20:14,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122589373] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:14,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238250773] [2022-03-01 16:20:14,221 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:20:14,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:14,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:14,222 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:14,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-01 16:20:14,275 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 16:20:14,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:20:14,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:20:14,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:14,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:20:14,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:14,995 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238250773] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:20:14,995 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:20:14,995 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:20:14,995 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31525465] [2022-03-01 16:20:14,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:20:14,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:20:14,996 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:14,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:20:14,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:20:14,996 INFO L87 Difference]: Start difference. First operand 929 states and 2421 transitions. Second operand has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:16,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:16,172 INFO L93 Difference]: Finished difference Result 1578 states and 4174 transitions. [2022-03-01 16:20:16,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-01 16:20:16,172 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:20:16,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:16,175 INFO L225 Difference]: With dead ends: 1578 [2022-03-01 16:20:16,175 INFO L226 Difference]: Without dead ends: 1515 [2022-03-01 16:20:16,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1802 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1105, Invalid=5375, Unknown=0, NotChecked=0, Total=6480 [2022-03-01 16:20:16,177 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 788 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 2105 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:16,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [788 Valid, 2105 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 16:20:16,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2022-03-01 16:20:16,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 993. [2022-03-01 16:20:16,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 992 states have (on average 2.6461693548387095) internal successors, (2625), 992 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:16,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 2625 transitions. [2022-03-01 16:20:16,194 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 2625 transitions. Word has length 70 [2022-03-01 16:20:16,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:16,194 INFO L470 AbstractCegarLoop]: Abstraction has 993 states and 2625 transitions. [2022-03-01 16:20:16,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:16,194 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 2625 transitions. [2022-03-01 16:20:16,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:20:16,196 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:16,196 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:16,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-01 16:20:16,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-03-01 16:20:16,417 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:16,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:16,418 INFO L85 PathProgramCache]: Analyzing trace with hash -969795277, now seen corresponding path program 6 times [2022-03-01 16:20:16,418 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:16,418 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135130362] [2022-03-01 16:20:16,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:16,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:16,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:16,548 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:16,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135130362] [2022-03-01 16:20:16,548 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135130362] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:16,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114185757] [2022-03-01 16:20:16,548 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:20:16,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:16,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:16,549 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:16,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-01 16:20:16,616 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 16:20:16,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:20:16,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:20:16,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:16,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:16,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:20:17,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:17,346 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114185757] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:20:17,346 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:20:17,346 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:20:17,346 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4638196] [2022-03-01 16:20:17,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:20:17,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:20:17,346 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:17,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:20:17,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:20:17,347 INFO L87 Difference]: Start difference. First operand 993 states and 2625 transitions. Second operand has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:18,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:18,492 INFO L93 Difference]: Finished difference Result 1377 states and 3662 transitions. [2022-03-01 16:20:18,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-01 16:20:18,493 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:20:18,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:18,495 INFO L225 Difference]: With dead ends: 1377 [2022-03-01 16:20:18,495 INFO L226 Difference]: Without dead ends: 1310 [2022-03-01 16:20:18,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1613 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1039, Invalid=4967, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 16:20:18,497 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 616 mSDsluCounter, 2444 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 2462 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:18,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 2462 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:20:18,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2022-03-01 16:20:18,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 977. [2022-03-01 16:20:18,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 976 states have (on average 2.6403688524590163) internal successors, (2577), 976 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:18,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 2577 transitions. [2022-03-01 16:20:18,510 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 2577 transitions. Word has length 70 [2022-03-01 16:20:18,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:18,510 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 2577 transitions. [2022-03-01 16:20:18,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:18,511 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 2577 transitions. [2022-03-01 16:20:18,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:20:18,512 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:18,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:18,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-01 16:20:18,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-03-01 16:20:18,731 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:18,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:18,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1740201325, now seen corresponding path program 7 times [2022-03-01 16:20:18,731 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:18,731 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336075595] [2022-03-01 16:20:18,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:18,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:18,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:18,881 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:18,881 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336075595] [2022-03-01 16:20:18,881 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336075595] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:18,881 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301091838] [2022-03-01 16:20:18,882 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:20:18,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:18,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:18,886 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:18,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-01 16:20:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:18,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:20:18,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:19,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:20:19,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:19,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301091838] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:20:19,830 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:20:19,830 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:20:19,830 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922198721] [2022-03-01 16:20:19,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:20:19,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:20:19,830 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:19,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:20:19,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:20:19,831 INFO L87 Difference]: Start difference. First operand 977 states and 2577 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:22,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:22,421 INFO L93 Difference]: Finished difference Result 2171 states and 5825 transitions. [2022-03-01 16:20:22,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-01 16:20:22,421 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:20:22,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:22,425 INFO L225 Difference]: With dead ends: 2171 [2022-03-01 16:20:22,425 INFO L226 Difference]: Without dead ends: 2031 [2022-03-01 16:20:22,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3871 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1718, Invalid=9838, Unknown=0, NotChecked=0, Total=11556 [2022-03-01 16:20:22,427 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 775 mSDsluCounter, 2340 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 2390 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:22,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 2390 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:20:22,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2022-03-01 16:20:22,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 1013. [2022-03-01 16:20:22,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1012 states have (on average 2.66403162055336) internal successors, (2696), 1012 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:22,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 2696 transitions. [2022-03-01 16:20:22,442 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 2696 transitions. Word has length 70 [2022-03-01 16:20:22,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:22,443 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 2696 transitions. [2022-03-01 16:20:22,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:22,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 2696 transitions. [2022-03-01 16:20:22,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:20:22,444 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:22,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:22,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-01 16:20:22,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:22,665 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:22,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:22,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1996119831, now seen corresponding path program 8 times [2022-03-01 16:20:22,666 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:22,666 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54051758] [2022-03-01 16:20:22,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:22,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:22,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:22,792 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:22,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54051758] [2022-03-01 16:20:22,792 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54051758] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:22,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783425906] [2022-03-01 16:20:22,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:20:22,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:22,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:22,793 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:22,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-01 16:20:22,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:20:22,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:20:22,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:20:22,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:23,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:23,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:20:23,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:23,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783425906] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:20:23,763 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:20:23,763 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:20:23,763 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508962491] [2022-03-01 16:20:23,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:20:23,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:20:23,764 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:23,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:20:23,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:20:23,764 INFO L87 Difference]: Start difference. First operand 1013 states and 2696 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:26,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:26,340 INFO L93 Difference]: Finished difference Result 2201 states and 5933 transitions. [2022-03-01 16:20:26,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-03-01 16:20:26,341 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:20:26,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:26,344 INFO L225 Difference]: With dead ends: 2201 [2022-03-01 16:20:26,344 INFO L226 Difference]: Without dead ends: 2075 [2022-03-01 16:20:26,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3645 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1631, Invalid=9499, Unknown=0, NotChecked=0, Total=11130 [2022-03-01 16:20:26,345 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 768 mSDsluCounter, 2268 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:26,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 2313 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:20:26,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2022-03-01 16:20:26,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 1065. [2022-03-01 16:20:26,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1064 states have (on average 2.6907894736842106) internal successors, (2863), 1064 states have internal predecessors, (2863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:26,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 2863 transitions. [2022-03-01 16:20:26,362 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 2863 transitions. Word has length 70 [2022-03-01 16:20:26,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:26,362 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 2863 transitions. [2022-03-01 16:20:26,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:26,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 2863 transitions. [2022-03-01 16:20:26,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:20:26,364 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:26,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:26,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-01 16:20:26,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-03-01 16:20:26,582 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:26,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:26,583 INFO L85 PathProgramCache]: Analyzing trace with hash 713876771, now seen corresponding path program 9 times [2022-03-01 16:20:26,583 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:26,583 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389862993] [2022-03-01 16:20:26,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:26,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:26,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:26,718 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:26,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389862993] [2022-03-01 16:20:26,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389862993] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:26,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472009872] [2022-03-01 16:20:26,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:20:26,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:26,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:26,720 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:26,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-01 16:20:26,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 16:20:26,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:20:26,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:20:26,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:27,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:27,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:20:27,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:27,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472009872] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:20:27,603 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:20:27,603 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:20:27,603 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275180478] [2022-03-01 16:20:27,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:20:27,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:20:27,603 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:27,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:20:27,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:20:27,604 INFO L87 Difference]: Start difference. First operand 1065 states and 2863 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:30,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:30,254 INFO L93 Difference]: Finished difference Result 2153 states and 5838 transitions. [2022-03-01 16:20:30,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-03-01 16:20:30,255 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:20:30,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:30,258 INFO L225 Difference]: With dead ends: 2153 [2022-03-01 16:20:30,258 INFO L226 Difference]: Without dead ends: 2013 [2022-03-01 16:20:30,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3745 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1653, Invalid=9689, Unknown=0, NotChecked=0, Total=11342 [2022-03-01 16:20:30,260 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 652 mSDsluCounter, 2875 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 2860 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:30,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [652 Valid, 2860 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:20:30,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2022-03-01 16:20:30,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1065. [2022-03-01 16:20:30,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1064 states have (on average 2.68703007518797) internal successors, (2859), 1064 states have internal predecessors, (2859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:30,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 2859 transitions. [2022-03-01 16:20:30,278 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 2859 transitions. Word has length 70 [2022-03-01 16:20:30,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:30,278 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 2859 transitions. [2022-03-01 16:20:30,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:30,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 2859 transitions. [2022-03-01 16:20:30,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:20:30,280 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:30,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:30,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-01 16:20:30,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:30,496 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:30,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:30,496 INFO L85 PathProgramCache]: Analyzing trace with hash -572732175, now seen corresponding path program 10 times [2022-03-01 16:20:30,496 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:30,496 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129923745] [2022-03-01 16:20:30,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:30,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:30,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:30,614 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:30,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129923745] [2022-03-01 16:20:30,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129923745] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:30,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764848129] [2022-03-01 16:20:30,615 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:20:30,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:30,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:30,616 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:30,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-01 16:20:30,669 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:20:30,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:20:30,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-01 16:20:30,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:30,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:30,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:20:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:31,347 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764848129] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:20:31,347 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:20:31,347 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2022-03-01 16:20:31,348 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320660949] [2022-03-01 16:20:31,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:20:31,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 16:20:31,348 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:31,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 16:20:31,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=882, Unknown=0, NotChecked=0, Total=992 [2022-03-01 16:20:31,348 INFO L87 Difference]: Start difference. First operand 1065 states and 2859 transitions. Second operand has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:33,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:33,657 INFO L93 Difference]: Finished difference Result 2793 states and 7571 transitions. [2022-03-01 16:20:33,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-01 16:20:33,658 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:20:33,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:33,662 INFO L225 Difference]: With dead ends: 2793 [2022-03-01 16:20:33,662 INFO L226 Difference]: Without dead ends: 2661 [2022-03-01 16:20:33,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4054 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1760, Invalid=10672, Unknown=0, NotChecked=0, Total=12432 [2022-03-01 16:20:33,663 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 861 mSDsluCounter, 3410 mSDsCounter, 0 mSdLazyCounter, 1788 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 3430 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:33,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [861 Valid, 3430 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1788 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:20:33,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2661 states. [2022-03-01 16:20:33,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2661 to 1416. [2022-03-01 16:20:33,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 2.8141342756183745) internal successors, (3982), 1415 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:33,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 3982 transitions. [2022-03-01 16:20:33,688 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 3982 transitions. Word has length 70 [2022-03-01 16:20:33,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:33,688 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 3982 transitions. [2022-03-01 16:20:33,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:33,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 3982 transitions. [2022-03-01 16:20:33,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:20:33,690 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:33,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:33,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-01 16:20:33,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-03-01 16:20:33,903 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:33,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:33,904 INFO L85 PathProgramCache]: Analyzing trace with hash -340166747, now seen corresponding path program 11 times [2022-03-01 16:20:33,904 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:33,904 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123421789] [2022-03-01 16:20:33,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:33,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:34,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:34,047 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:34,047 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123421789] [2022-03-01 16:20:34,047 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123421789] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:34,047 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998815219] [2022-03-01 16:20:34,047 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:20:34,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:34,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:34,049 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:34,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-01 16:20:34,099 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:20:34,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:20:34,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:20:34,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:34,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:34,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:20:34,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:34,928 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998815219] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:20:34,928 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:20:34,928 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:20:34,928 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844043968] [2022-03-01 16:20:34,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:20:34,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:20:34,928 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:34,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:20:34,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:20:34,929 INFO L87 Difference]: Start difference. First operand 1416 states and 3982 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:37,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:37,104 INFO L93 Difference]: Finished difference Result 2895 states and 8029 transitions. [2022-03-01 16:20:37,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-01 16:20:37,104 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:20:37,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:37,109 INFO L225 Difference]: With dead ends: 2895 [2022-03-01 16:20:37,109 INFO L226 Difference]: Without dead ends: 2769 [2022-03-01 16:20:37,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2406 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1033, Invalid=7157, Unknown=0, NotChecked=0, Total=8190 [2022-03-01 16:20:37,110 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 545 mSDsluCounter, 3108 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 3108 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:37,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 3108 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:20:37,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2022-03-01 16:20:37,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 1444. [2022-03-01 16:20:37,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 2.8184338184338182) internal successors, (4067), 1443 states have internal predecessors, (4067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:37,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 4067 transitions. [2022-03-01 16:20:37,135 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 4067 transitions. Word has length 70 [2022-03-01 16:20:37,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:37,135 INFO L470 AbstractCegarLoop]: Abstraction has 1444 states and 4067 transitions. [2022-03-01 16:20:37,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:37,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 4067 transitions. [2022-03-01 16:20:37,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:20:37,137 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:37,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:37,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-01 16:20:37,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-03-01 16:20:37,353 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:37,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:37,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1925137441, now seen corresponding path program 12 times [2022-03-01 16:20:37,353 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:37,353 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532252816] [2022-03-01 16:20:37,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:37,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:37,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:37,496 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:37,496 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532252816] [2022-03-01 16:20:37,496 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532252816] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:37,496 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925456630] [2022-03-01 16:20:37,496 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:20:37,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:37,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:37,500 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:37,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-01 16:20:37,555 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 16:20:37,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:20:37,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:20:37,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:37,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:37,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:20:38,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:38,381 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925456630] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:20:38,381 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:20:38,381 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:20:38,381 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331097052] [2022-03-01 16:20:38,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:20:38,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:20:38,381 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:38,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:20:38,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:20:38,382 INFO L87 Difference]: Start difference. First operand 1444 states and 4067 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:40,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:40,523 INFO L93 Difference]: Finished difference Result 2847 states and 7934 transitions. [2022-03-01 16:20:40,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-01 16:20:40,523 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:20:40,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:40,528 INFO L225 Difference]: With dead ends: 2847 [2022-03-01 16:20:40,528 INFO L226 Difference]: Without dead ends: 2707 [2022-03-01 16:20:40,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2499 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1060, Invalid=7312, Unknown=0, NotChecked=0, Total=8372 [2022-03-01 16:20:40,529 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 532 mSDsluCounter, 2915 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 2904 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:40,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 2904 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:20:40,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2707 states. [2022-03-01 16:20:40,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2707 to 1436. [2022-03-01 16:20:40,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 2.81602787456446) internal successors, (4041), 1435 states have internal predecessors, (4041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:40,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 4041 transitions. [2022-03-01 16:20:40,553 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 4041 transitions. Word has length 70 [2022-03-01 16:20:40,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:40,553 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 4041 transitions. [2022-03-01 16:20:40,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:40,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 4041 transitions. [2022-03-01 16:20:40,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:20:40,556 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:40,556 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:40,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-01 16:20:40,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-03-01 16:20:40,776 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:40,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:40,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1083220909, now seen corresponding path program 13 times [2022-03-01 16:20:40,776 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:40,776 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074444419] [2022-03-01 16:20:40,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:40,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:40,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:40,905 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:40,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074444419] [2022-03-01 16:20:40,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074444419] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:40,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118792228] [2022-03-01 16:20:40,905 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:20:40,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:40,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:40,908 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:40,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-01 16:20:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:40,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:20:40,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:41,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:41,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:20:41,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:41,798 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118792228] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:20:41,798 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:20:41,798 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:20:41,798 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654340845] [2022-03-01 16:20:41,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:20:41,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:20:41,799 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:41,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:20:41,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=994, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:20:41,799 INFO L87 Difference]: Start difference. First operand 1436 states and 4041 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:45,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:45,100 INFO L93 Difference]: Finished difference Result 3158 states and 8754 transitions. [2022-03-01 16:20:45,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-03-01 16:20:45,100 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:20:45,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:45,105 INFO L225 Difference]: With dead ends: 3158 [2022-03-01 16:20:45,105 INFO L226 Difference]: Without dead ends: 3026 [2022-03-01 16:20:45,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4898 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1851, Invalid=12669, Unknown=0, NotChecked=0, Total=14520 [2022-03-01 16:20:45,106 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 749 mSDsluCounter, 2686 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:45,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 2713 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:20:45,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2022-03-01 16:20:45,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 1504. [2022-03-01 16:20:45,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1503 states have (on average 2.821024617431803) internal successors, (4240), 1503 states have internal predecessors, (4240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:45,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 4240 transitions. [2022-03-01 16:20:45,129 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 4240 transitions. Word has length 70 [2022-03-01 16:20:45,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:45,129 INFO L470 AbstractCegarLoop]: Abstraction has 1504 states and 4240 transitions. [2022-03-01 16:20:45,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:45,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 4240 transitions. [2022-03-01 16:20:45,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:20:45,131 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:45,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:45,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-01 16:20:45,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-03-01 16:20:45,332 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:45,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:45,332 INFO L85 PathProgramCache]: Analyzing trace with hash -295820047, now seen corresponding path program 14 times [2022-03-01 16:20:45,332 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:45,332 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583109907] [2022-03-01 16:20:45,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:45,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:45,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:45,461 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:45,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583109907] [2022-03-01 16:20:45,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583109907] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:45,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086235537] [2022-03-01 16:20:45,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:20:45,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:45,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:45,463 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:45,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-01 16:20:45,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:20:45,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:20:45,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:20:45,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:45,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:45,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:20:46,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:46,300 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086235537] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:20:46,301 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:20:46,301 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:20:46,301 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695939200] [2022-03-01 16:20:46,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:20:46,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:20:46,301 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:46,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:20:46,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:20:46,301 INFO L87 Difference]: Start difference. First operand 1504 states and 4240 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:48,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:48,558 INFO L93 Difference]: Finished difference Result 2838 states and 7871 transitions. [2022-03-01 16:20:48,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-01 16:20:48,559 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:20:48,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:48,563 INFO L225 Difference]: With dead ends: 2838 [2022-03-01 16:20:48,563 INFO L226 Difference]: Without dead ends: 2706 [2022-03-01 16:20:48,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2679 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1071, Invalid=7859, Unknown=0, NotChecked=0, Total=8930 [2022-03-01 16:20:48,564 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 522 mSDsluCounter, 3567 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 3518 SdHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:48,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 3518 Invalid, 1558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:20:48,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2022-03-01 16:20:48,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 1519. [2022-03-01 16:20:48,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1518 states have (on average 2.816205533596838) internal successors, (4275), 1518 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:48,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 4275 transitions. [2022-03-01 16:20:48,585 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 4275 transitions. Word has length 70 [2022-03-01 16:20:48,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:48,585 INFO L470 AbstractCegarLoop]: Abstraction has 1519 states and 4275 transitions. [2022-03-01 16:20:48,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:48,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 4275 transitions. [2022-03-01 16:20:48,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:20:48,587 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:48,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:48,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-01 16:20:48,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:48,794 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:48,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:48,794 INFO L85 PathProgramCache]: Analyzing trace with hash 146329989, now seen corresponding path program 15 times [2022-03-01 16:20:48,794 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:48,794 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587270012] [2022-03-01 16:20:48,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:48,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:48,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:48,942 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:48,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587270012] [2022-03-01 16:20:48,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587270012] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:48,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506894467] [2022-03-01 16:20:48,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:20:48,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:48,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:48,944 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:48,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-01 16:20:49,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 16:20:49,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:20:49,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:20:49,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:49,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:49,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:20:49,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:49,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506894467] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:20:49,821 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:20:49,821 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:20:49,821 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604099944] [2022-03-01 16:20:49,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:20:49,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:20:49,821 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:49,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:20:49,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=984, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:20:49,822 INFO L87 Difference]: Start difference. First operand 1519 states and 4275 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:53,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:53,230 INFO L93 Difference]: Finished difference Result 3305 states and 9252 transitions. [2022-03-01 16:20:53,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-03-01 16:20:53,230 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:20:53,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:53,235 INFO L225 Difference]: With dead ends: 3305 [2022-03-01 16:20:53,235 INFO L226 Difference]: Without dead ends: 3179 [2022-03-01 16:20:53,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5564 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2275, Invalid=13475, Unknown=0, NotChecked=0, Total=15750 [2022-03-01 16:20:53,236 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 816 mSDsluCounter, 2945 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 2964 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:53,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 2964 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:20:53,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2022-03-01 16:20:53,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 1615. [2022-03-01 16:20:53,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1614 states have (on average 2.8469640644361833) internal successors, (4595), 1614 states have internal predecessors, (4595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:53,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 4595 transitions. [2022-03-01 16:20:53,263 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 4595 transitions. Word has length 70 [2022-03-01 16:20:53,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:53,264 INFO L470 AbstractCegarLoop]: Abstraction has 1615 states and 4595 transitions. [2022-03-01 16:20:53,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:53,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 4595 transitions. [2022-03-01 16:20:53,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:20:53,266 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:53,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:53,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-03-01 16:20:53,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-03-01 16:20:53,482 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:53,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:53,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1438640705, now seen corresponding path program 16 times [2022-03-01 16:20:53,482 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:53,483 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22658698] [2022-03-01 16:20:53,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:53,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:53,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:53,611 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:53,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22658698] [2022-03-01 16:20:53,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22658698] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:53,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199355075] [2022-03-01 16:20:53,612 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:20:53,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:53,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:53,613 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:53,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-01 16:20:53,666 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:20:53,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:20:53,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-01 16:20:53,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:53,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:53,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:20:54,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:54,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199355075] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:20:54,328 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:20:54,328 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:20:54,328 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405615617] [2022-03-01 16:20:54,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:20:54,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:20:54,328 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:54,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:20:54,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:20:54,329 INFO L87 Difference]: Start difference. First operand 1615 states and 4595 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:56,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:56,401 INFO L93 Difference]: Finished difference Result 3390 states and 9672 transitions. [2022-03-01 16:20:56,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-03-01 16:20:56,402 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:20:56,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:56,406 INFO L225 Difference]: With dead ends: 3390 [2022-03-01 16:20:56,407 INFO L226 Difference]: Without dead ends: 3213 [2022-03-01 16:20:56,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4151 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1687, Invalid=10745, Unknown=0, NotChecked=0, Total=12432 [2022-03-01 16:20:56,408 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 635 mSDsluCounter, 3408 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 3407 SdHoareTripleChecker+Invalid, 2018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:56,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 3407 Invalid, 2018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1894 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:20:56,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3213 states. [2022-03-01 16:20:56,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3213 to 1683. [2022-03-01 16:20:56,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 2.859690844233056) internal successors, (4810), 1682 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:56,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 4810 transitions. [2022-03-01 16:20:56,434 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 4810 transitions. Word has length 70 [2022-03-01 16:20:56,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:56,434 INFO L470 AbstractCegarLoop]: Abstraction has 1683 states and 4810 transitions. [2022-03-01 16:20:56,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:56,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 4810 transitions. [2022-03-01 16:20:56,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:20:56,437 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:56,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:56,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-03-01 16:20:56,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-03-01 16:20:56,653 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:56,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:56,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1845975855, now seen corresponding path program 17 times [2022-03-01 16:20:56,653 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:56,653 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40467684] [2022-03-01 16:20:56,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:56,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:56,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:56,787 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:56,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40467684] [2022-03-01 16:20:56,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40467684] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:56,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456166818] [2022-03-01 16:20:56,787 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:20:56,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:56,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:56,792 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:56,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-01 16:20:56,866 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 16:20:56,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:20:56,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:20:56,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:57,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:57,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:20:57,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:57,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456166818] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:20:57,563 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:20:57,564 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:20:57,564 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013482812] [2022-03-01 16:20:57,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:20:57,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:20:57,564 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:20:57,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:20:57,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=934, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:20:57,565 INFO L87 Difference]: Start difference. First operand 1683 states and 4810 transitions. Second operand has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:58,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:20:58,932 INFO L93 Difference]: Finished difference Result 2439 states and 6867 transitions. [2022-03-01 16:20:58,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-01 16:20:58,932 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:20:58,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:20:58,936 INFO L225 Difference]: With dead ends: 2439 [2022-03-01 16:20:58,936 INFO L226 Difference]: Without dead ends: 2376 [2022-03-01 16:20:58,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2331 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1318, Invalid=6872, Unknown=0, NotChecked=0, Total=8190 [2022-03-01 16:20:58,937 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 698 mSDsluCounter, 2566 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 2596 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:20:58,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [698 Valid, 2596 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:20:58,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2022-03-01 16:20:58,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 1763. [2022-03-01 16:20:58,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 2.8819523269012484) internal successors, (5078), 1762 states have internal predecessors, (5078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:58,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 5078 transitions. [2022-03-01 16:20:58,959 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 5078 transitions. Word has length 70 [2022-03-01 16:20:58,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:20:58,960 INFO L470 AbstractCegarLoop]: Abstraction has 1763 states and 5078 transitions. [2022-03-01 16:20:58,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:20:58,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 5078 transitions. [2022-03-01 16:20:58,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:20:58,962 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:20:58,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:20:58,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-01 16:20:59,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-03-01 16:20:59,173 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:20:59,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:20:59,173 INFO L85 PathProgramCache]: Analyzing trace with hash 133886259, now seen corresponding path program 18 times [2022-03-01 16:20:59,173 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:20:59,173 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840663862] [2022-03-01 16:20:59,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:20:59,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:20:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:20:59,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:59,299 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:20:59,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840663862] [2022-03-01 16:20:59,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840663862] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:20:59,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366744069] [2022-03-01 16:20:59,299 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:20:59,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:20:59,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:20:59,300 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:20:59,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-01 16:20:59,356 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 16:20:59,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:20:59,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:20:59,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:20:59,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:20:59,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:21:00,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:00,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366744069] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:21:00,010 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:21:00,010 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:21:00,011 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857863634] [2022-03-01 16:21:00,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:21:00,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:21:00,011 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:00,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:21:00,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:21:00,011 INFO L87 Difference]: Start difference. First operand 1763 states and 5078 transitions. Second operand has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:01,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:01,272 INFO L93 Difference]: Finished difference Result 2219 states and 6317 transitions. [2022-03-01 16:21:01,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-01 16:21:01,273 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:21:01,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:01,276 INFO L225 Difference]: With dead ends: 2219 [2022-03-01 16:21:01,276 INFO L226 Difference]: Without dead ends: 2152 [2022-03-01 16:21:01,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2127 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1233, Invalid=6423, Unknown=0, NotChecked=0, Total=7656 [2022-03-01 16:21:01,277 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 611 mSDsluCounter, 2424 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:01,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 2444 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:21:01,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2022-03-01 16:21:01,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 1683. [2022-03-01 16:21:01,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 2.8620689655172415) internal successors, (4814), 1682 states have internal predecessors, (4814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:01,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 4814 transitions. [2022-03-01 16:21:01,298 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 4814 transitions. Word has length 70 [2022-03-01 16:21:01,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:01,299 INFO L470 AbstractCegarLoop]: Abstraction has 1683 states and 4814 transitions. [2022-03-01 16:21:01,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:01,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 4814 transitions. [2022-03-01 16:21:01,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:21:01,301 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:01,301 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:01,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-03-01 16:21:01,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:21:01,502 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:01,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:01,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1885871487, now seen corresponding path program 19 times [2022-03-01 16:21:01,502 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:01,502 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531919388] [2022-03-01 16:21:01,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:01,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:01,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:01,631 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:01,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531919388] [2022-03-01 16:21:01,631 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531919388] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:21:01,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229226383] [2022-03-01 16:21:01,631 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:21:01,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:21:01,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:21:01,632 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:21:01,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-01 16:21:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:01,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:21:01,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:21:02,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:02,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:21:02,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:02,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229226383] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:21:02,523 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:21:02,523 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:21:02,523 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006881741] [2022-03-01 16:21:02,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:21:02,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:21:02,524 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:02,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:21:02,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:21:02,524 INFO L87 Difference]: Start difference. First operand 1683 states and 4814 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:05,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:05,566 INFO L93 Difference]: Finished difference Result 3486 states and 9856 transitions. [2022-03-01 16:21:05,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-03-01 16:21:05,567 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:21:05,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:05,572 INFO L225 Difference]: With dead ends: 3486 [2022-03-01 16:21:05,572 INFO L226 Difference]: Without dead ends: 3360 [2022-03-01 16:21:05,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4418 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1812, Invalid=11298, Unknown=0, NotChecked=0, Total=13110 [2022-03-01 16:21:05,574 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 680 mSDsluCounter, 2512 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:05,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 2543 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:21:05,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3360 states. [2022-03-01 16:21:05,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3360 to 1795. [2022-03-01 16:21:05,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 2.881828316610925) internal successors, (5170), 1794 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:05,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 5170 transitions. [2022-03-01 16:21:05,602 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 5170 transitions. Word has length 70 [2022-03-01 16:21:05,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:05,602 INFO L470 AbstractCegarLoop]: Abstraction has 1795 states and 5170 transitions. [2022-03-01 16:21:05,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:05,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 5170 transitions. [2022-03-01 16:21:05,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:21:05,605 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:05,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:05,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-01 16:21:05,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:21:05,805 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:05,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:05,806 INFO L85 PathProgramCache]: Analyzing trace with hash 300900793, now seen corresponding path program 20 times [2022-03-01 16:21:05,806 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:05,806 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634745873] [2022-03-01 16:21:05,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:05,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:05,943 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:05,943 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634745873] [2022-03-01 16:21:05,943 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634745873] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:21:05,943 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198500494] [2022-03-01 16:21:05,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:21:05,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:21:05,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:21:05,944 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:21:05,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-01 16:21:06,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:21:06,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:21:06,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:21:06,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:21:06,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:06,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:21:06,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:06,798 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198500494] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:21:06,798 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:21:06,798 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:21:06,798 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784452857] [2022-03-01 16:21:06,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:21:06,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:21:06,798 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:06,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:21:06,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:21:06,799 INFO L87 Difference]: Start difference. First operand 1795 states and 5170 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:09,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:09,853 INFO L93 Difference]: Finished difference Result 3422 states and 9717 transitions. [2022-03-01 16:21:09,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-03-01 16:21:09,853 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:21:09,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:09,858 INFO L225 Difference]: With dead ends: 3422 [2022-03-01 16:21:09,858 INFO L226 Difference]: Without dead ends: 3282 [2022-03-01 16:21:09,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4527 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1850, Invalid=11490, Unknown=0, NotChecked=0, Total=13340 [2022-03-01 16:21:09,859 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 718 mSDsluCounter, 2374 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 2419 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:09,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [718 Valid, 2419 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:21:09,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3282 states. [2022-03-01 16:21:09,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3282 to 1787. [2022-03-01 16:21:09,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1787 states, 1786 states have (on average 2.875699888017917) internal successors, (5136), 1786 states have internal predecessors, (5136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:09,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1787 states to 1787 states and 5136 transitions. [2022-03-01 16:21:09,889 INFO L78 Accepts]: Start accepts. Automaton has 1787 states and 5136 transitions. Word has length 70 [2022-03-01 16:21:09,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:09,889 INFO L470 AbstractCegarLoop]: Abstraction has 1787 states and 5136 transitions. [2022-03-01 16:21:09,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:09,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1787 states and 5136 transitions. [2022-03-01 16:21:09,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:21:09,891 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:09,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:09,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-01 16:21:10,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-03-01 16:21:10,092 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:10,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:10,092 INFO L85 PathProgramCache]: Analyzing trace with hash -985708153, now seen corresponding path program 21 times [2022-03-01 16:21:10,093 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:10,093 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284253191] [2022-03-01 16:21:10,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:10,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:10,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:10,220 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:10,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284253191] [2022-03-01 16:21:10,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284253191] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:21:10,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038767706] [2022-03-01 16:21:10,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:21:10,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:21:10,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:21:10,222 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:21:10,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-01 16:21:10,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 16:21:10,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:21:10,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:21:10,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:21:10,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:10,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:21:11,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:11,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038767706] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:21:11,060 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:21:11,060 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:21:11,060 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59710630] [2022-03-01 16:21:11,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:21:11,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:21:11,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:11,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:21:11,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:21:11,061 INFO L87 Difference]: Start difference. First operand 1787 states and 5136 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:15,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:15,131 INFO L93 Difference]: Finished difference Result 3648 states and 10326 transitions. [2022-03-01 16:21:15,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-03-01 16:21:15,131 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:21:15,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:15,137 INFO L225 Difference]: With dead ends: 3648 [2022-03-01 16:21:15,137 INFO L226 Difference]: Without dead ends: 3516 [2022-03-01 16:21:15,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6642 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2527, Invalid=15833, Unknown=0, NotChecked=0, Total=18360 [2022-03-01 16:21:15,138 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 824 mSDsluCounter, 2769 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:15,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 2785 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:21:15,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3516 states. [2022-03-01 16:21:15,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3516 to 1755. [2022-03-01 16:21:15,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1754 states have (on average 2.877993158494869) internal successors, (5048), 1754 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:15,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 5048 transitions. [2022-03-01 16:21:15,166 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 5048 transitions. Word has length 70 [2022-03-01 16:21:15,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:15,166 INFO L470 AbstractCegarLoop]: Abstraction has 1755 states and 5048 transitions. [2022-03-01 16:21:15,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:15,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 5048 transitions. [2022-03-01 16:21:15,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:21:15,169 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:15,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:15,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-01 16:21:15,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:21:15,379 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:15,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:15,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1930218187, now seen corresponding path program 22 times [2022-03-01 16:21:15,380 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:15,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124757169] [2022-03-01 16:21:15,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:15,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:15,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:15,512 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:15,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124757169] [2022-03-01 16:21:15,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124757169] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:21:15,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004746576] [2022-03-01 16:21:15,512 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:21:15,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:21:15,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:21:15,513 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:21:15,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-01 16:21:15,570 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:21:15,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:21:15,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-01 16:21:15,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:21:15,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:15,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:21:16,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:16,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004746576] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:21:16,223 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:21:16,223 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:21:16,223 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255782077] [2022-03-01 16:21:16,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:21:16,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:21:16,223 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:16,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:21:16,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:21:16,224 INFO L87 Difference]: Start difference. First operand 1755 states and 5048 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:17,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:17,801 INFO L93 Difference]: Finished difference Result 2948 states and 8269 transitions. [2022-03-01 16:21:17,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-01 16:21:17,801 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:21:17,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:17,805 INFO L225 Difference]: With dead ends: 2948 [2022-03-01 16:21:17,805 INFO L226 Difference]: Without dead ends: 2837 [2022-03-01 16:21:17,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2690 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1221, Invalid=7335, Unknown=0, NotChecked=0, Total=8556 [2022-03-01 16:21:17,806 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 522 mSDsluCounter, 3252 mSDsCounter, 0 mSdLazyCounter, 1513 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 3237 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:17,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 3237 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1513 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:21:17,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2837 states. [2022-03-01 16:21:17,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2837 to 1811. [2022-03-01 16:21:17,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1810 states have (on average 2.887292817679558) internal successors, (5226), 1810 states have internal predecessors, (5226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:17,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 5226 transitions. [2022-03-01 16:21:17,830 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 5226 transitions. Word has length 70 [2022-03-01 16:21:17,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:17,830 INFO L470 AbstractCegarLoop]: Abstraction has 1811 states and 5226 transitions. [2022-03-01 16:21:17,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:17,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 5226 transitions. [2022-03-01 16:21:17,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:21:17,833 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:17,833 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:17,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-03-01 16:21:18,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:21:18,035 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:18,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:18,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1922599073, now seen corresponding path program 23 times [2022-03-01 16:21:18,035 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:18,035 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942542000] [2022-03-01 16:21:18,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:18,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:18,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:18,169 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:18,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942542000] [2022-03-01 16:21:18,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942542000] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:21:18,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780432552] [2022-03-01 16:21:18,169 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:21:18,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:21:18,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:21:18,171 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:21:18,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-01 16:21:18,226 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:21:18,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:21:18,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:21:18,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:21:18,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:18,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:21:18,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:18,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780432552] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:21:18,869 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:21:18,869 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:21:18,869 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095519820] [2022-03-01 16:21:18,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:21:18,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:21:18,870 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:18,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:21:18,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:21:18,871 INFO L87 Difference]: Start difference. First operand 1811 states and 5226 transitions. Second operand has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:19,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:19,923 INFO L93 Difference]: Finished difference Result 2448 states and 6998 transitions. [2022-03-01 16:21:19,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-01 16:21:19,924 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:21:19,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:19,928 INFO L225 Difference]: With dead ends: 2448 [2022-03-01 16:21:19,928 INFO L226 Difference]: Without dead ends: 2385 [2022-03-01 16:21:19,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1639 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=968, Invalid=5038, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 16:21:19,929 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 827 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:19,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 2085 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:21:19,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2022-03-01 16:21:19,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 1935. [2022-03-01 16:21:19,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1935 states, 1934 states have (on average 2.892967942088935) internal successors, (5595), 1934 states have internal predecessors, (5595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:19,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 5595 transitions. [2022-03-01 16:21:19,955 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 5595 transitions. Word has length 70 [2022-03-01 16:21:19,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:19,955 INFO L470 AbstractCegarLoop]: Abstraction has 1935 states and 5595 transitions. [2022-03-01 16:21:19,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:19,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 5595 transitions. [2022-03-01 16:21:19,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:21:19,958 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:19,958 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:19,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-01 16:21:20,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:21:20,171 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:20,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:20,172 INFO L85 PathProgramCache]: Analyzing trace with hash 787397529, now seen corresponding path program 24 times [2022-03-01 16:21:20,172 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:20,172 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998033698] [2022-03-01 16:21:20,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:20,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:20,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:20,321 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:20,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998033698] [2022-03-01 16:21:20,321 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998033698] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:21:20,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508051071] [2022-03-01 16:21:20,321 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:21:20,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:21:20,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:21:20,322 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:21:20,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-01 16:21:20,383 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 16:21:20,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:21:20,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:21:20,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:21:20,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:20,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:21:21,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:21,204 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508051071] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:21:21,204 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:21:21,205 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:21:21,205 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276287865] [2022-03-01 16:21:21,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:21:21,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:21:21,205 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:21,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:21:21,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=977, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:21:21,205 INFO L87 Difference]: Start difference. First operand 1935 states and 5595 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:24,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:24,980 INFO L93 Difference]: Finished difference Result 4151 states and 11923 transitions. [2022-03-01 16:21:24,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-03-01 16:21:24,981 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:21:24,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:24,987 INFO L225 Difference]: With dead ends: 4151 [2022-03-01 16:21:24,987 INFO L226 Difference]: Without dead ends: 4011 [2022-03-01 16:21:24,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6756 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2828, Invalid=15262, Unknown=0, NotChecked=0, Total=18090 [2022-03-01 16:21:24,988 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 829 mSDsluCounter, 2576 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:24,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [829 Valid, 2587 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:21:24,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4011 states. [2022-03-01 16:21:25,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4011 to 2051. [2022-03-01 16:21:25,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2051 states, 2050 states have (on average 2.937560975609756) internal successors, (6022), 2050 states have internal predecessors, (6022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:25,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 6022 transitions. [2022-03-01 16:21:25,021 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 6022 transitions. Word has length 70 [2022-03-01 16:21:25,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:25,021 INFO L470 AbstractCegarLoop]: Abstraction has 2051 states and 6022 transitions. [2022-03-01 16:21:25,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:25,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 6022 transitions. [2022-03-01 16:21:25,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:21:25,024 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:25,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:25,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-01 16:21:25,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:21:25,225 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:25,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:25,225 INFO L85 PathProgramCache]: Analyzing trace with hash -499211417, now seen corresponding path program 25 times [2022-03-01 16:21:25,225 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:25,225 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866979076] [2022-03-01 16:21:25,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:25,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:25,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:25,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:25,364 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:25,365 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866979076] [2022-03-01 16:21:25,365 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866979076] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:21:25,365 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198420220] [2022-03-01 16:21:25,365 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:21:25,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:21:25,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:21:25,366 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:21:25,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-01 16:21:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:25,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:21:25,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:21:25,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:25,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:21:26,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:26,222 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198420220] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:21:26,222 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:21:26,222 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:21:26,222 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581297366] [2022-03-01 16:21:26,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:21:26,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:21:26,223 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:26,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:21:26,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:21:26,223 INFO L87 Difference]: Start difference. First operand 2051 states and 6022 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:31,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:31,214 INFO L93 Difference]: Finished difference Result 4543 states and 12903 transitions. [2022-03-01 16:21:31,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-03-01 16:21:31,214 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:21:31,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:31,221 INFO L225 Difference]: With dead ends: 4543 [2022-03-01 16:21:31,221 INFO L226 Difference]: Without dead ends: 4411 [2022-03-01 16:21:31,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10013 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=3803, Invalid=21637, Unknown=0, NotChecked=0, Total=25440 [2022-03-01 16:21:31,222 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 1092 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 2719 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:31,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1092 Valid, 2719 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:21:31,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4411 states. [2022-03-01 16:21:31,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4411 to 1943. [2022-03-01 16:21:31,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1943 states, 1942 states have (on average 2.915036045314109) internal successors, (5661), 1942 states have internal predecessors, (5661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:31,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 5661 transitions. [2022-03-01 16:21:31,254 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 5661 transitions. Word has length 70 [2022-03-01 16:21:31,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:31,254 INFO L470 AbstractCegarLoop]: Abstraction has 1943 states and 5661 transitions. [2022-03-01 16:21:31,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:31,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 5661 transitions. [2022-03-01 16:21:31,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:21:31,257 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:31,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:31,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-01 16:21:31,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-03-01 16:21:31,458 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:31,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:31,458 INFO L85 PathProgramCache]: Analyzing trace with hash -222953207, now seen corresponding path program 26 times [2022-03-01 16:21:31,458 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:31,458 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255145817] [2022-03-01 16:21:31,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:31,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:31,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:31,592 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:31,592 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255145817] [2022-03-01 16:21:31,592 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255145817] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:21:31,592 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830001329] [2022-03-01 16:21:31,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:21:31,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:21:31,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:21:31,593 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:21:31,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-01 16:21:31,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:21:31,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:21:31,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:21:31,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:21:31,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:31,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:21:32,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:32,470 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830001329] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:21:32,470 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:21:32,470 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:21:32,471 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447248010] [2022-03-01 16:21:32,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:21:32,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:21:32,471 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:32,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:21:32,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:21:32,471 INFO L87 Difference]: Start difference. First operand 1943 states and 5661 transitions. Second operand has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:36,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:36,614 INFO L93 Difference]: Finished difference Result 4168 states and 12047 transitions. [2022-03-01 16:21:36,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-03-01 16:21:36,615 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:21:36,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:36,621 INFO L225 Difference]: With dead ends: 4168 [2022-03-01 16:21:36,621 INFO L226 Difference]: Without dead ends: 4093 [2022-03-01 16:21:36,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7903 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3498, Invalid=17672, Unknown=0, NotChecked=0, Total=21170 [2022-03-01 16:21:36,623 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 1224 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 2351 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:36,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1224 Valid, 2351 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:21:36,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4093 states. [2022-03-01 16:21:36,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4093 to 2171. [2022-03-01 16:21:36,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2171 states, 2170 states have (on average 2.9419354838709677) internal successors, (6384), 2170 states have internal predecessors, (6384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:36,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2171 states to 2171 states and 6384 transitions. [2022-03-01 16:21:36,656 INFO L78 Accepts]: Start accepts. Automaton has 2171 states and 6384 transitions. Word has length 70 [2022-03-01 16:21:36,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:36,656 INFO L470 AbstractCegarLoop]: Abstraction has 2171 states and 6384 transitions. [2022-03-01 16:21:36,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:36,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2171 states and 6384 transitions. [2022-03-01 16:21:36,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:21:36,660 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:36,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:36,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-01 16:21:36,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-03-01 16:21:36,860 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:36,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:36,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1935042803, now seen corresponding path program 27 times [2022-03-01 16:21:36,861 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:36,861 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655023694] [2022-03-01 16:21:36,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:36,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:36,993 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:36,993 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655023694] [2022-03-01 16:21:36,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655023694] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:21:36,993 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487502906] [2022-03-01 16:21:36,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:21:36,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:21:36,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:21:36,994 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:21:36,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-01 16:21:37,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 16:21:37,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:21:37,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:21:37,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:21:37,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:37,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:21:37,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:37,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487502906] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:21:37,831 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:21:37,831 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:21:37,831 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628003383] [2022-03-01 16:21:37,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:21:37,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:21:37,832 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:37,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:21:37,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:21:37,832 INFO L87 Difference]: Start difference. First operand 2171 states and 6384 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:41,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:41,738 INFO L93 Difference]: Finished difference Result 4061 states and 11706 transitions. [2022-03-01 16:21:41,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-03-01 16:21:41,738 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:21:41,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:41,744 INFO L225 Difference]: With dead ends: 4061 [2022-03-01 16:21:41,744 INFO L226 Difference]: Without dead ends: 3935 [2022-03-01 16:21:41,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7685 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3319, Invalid=17273, Unknown=0, NotChecked=0, Total=20592 [2022-03-01 16:21:41,746 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 980 mSDsluCounter, 2408 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:41,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [980 Valid, 2424 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:21:41,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2022-03-01 16:21:41,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 2163. [2022-03-01 16:21:41,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 2.942645698427382) internal successors, (6362), 2162 states have internal predecessors, (6362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:41,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 6362 transitions. [2022-03-01 16:21:41,779 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 6362 transitions. Word has length 70 [2022-03-01 16:21:41,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:41,780 INFO L470 AbstractCegarLoop]: Abstraction has 2163 states and 6362 transitions. [2022-03-01 16:21:41,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:41,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 6362 transitions. [2022-03-01 16:21:41,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:21:41,783 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:41,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:41,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-01 16:21:41,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-03-01 16:21:41,987 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:41,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:41,988 INFO L85 PathProgramCache]: Analyzing trace with hash 774953799, now seen corresponding path program 28 times [2022-03-01 16:21:41,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:41,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26150071] [2022-03-01 16:21:41,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:41,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:42,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:42,105 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:42,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26150071] [2022-03-01 16:21:42,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26150071] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:21:42,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877866150] [2022-03-01 16:21:42,105 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:21:42,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:21:42,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:21:42,106 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:21:42,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-01 16:21:42,164 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:21:42,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:21:42,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-01 16:21:42,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:21:42,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:42,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:21:42,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:42,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877866150] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:21:42,816 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:21:42,816 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:21:42,816 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181095962] [2022-03-01 16:21:42,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:21:42,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:21:42,816 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:42,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:21:42,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:21:42,817 INFO L87 Difference]: Start difference. First operand 2163 states and 6362 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:45,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:45,951 INFO L93 Difference]: Finished difference Result 4136 states and 12015 transitions. [2022-03-01 16:21:45,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-03-01 16:21:45,951 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:21:45,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:45,957 INFO L225 Difference]: With dead ends: 4136 [2022-03-01 16:21:45,957 INFO L226 Difference]: Without dead ends: 3990 [2022-03-01 16:21:45,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8287 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2953, Invalid=20609, Unknown=0, NotChecked=0, Total=23562 [2022-03-01 16:21:45,959 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 856 mSDsluCounter, 3209 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 3242 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:45,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [856 Valid, 3242 Invalid, 2013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1887 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:21:45,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3990 states. [2022-03-01 16:21:45,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3990 to 2547. [2022-03-01 16:21:45,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2547 states, 2546 states have (on average 2.978004713275727) internal successors, (7582), 2546 states have internal predecessors, (7582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:45,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2547 states to 2547 states and 7582 transitions. [2022-03-01 16:21:45,993 INFO L78 Accepts]: Start accepts. Automaton has 2547 states and 7582 transitions. Word has length 70 [2022-03-01 16:21:45,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:45,993 INFO L470 AbstractCegarLoop]: Abstraction has 2547 states and 7582 transitions. [2022-03-01 16:21:45,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:45,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2547 states and 7582 transitions. [2022-03-01 16:21:45,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:21:45,996 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:45,996 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:46,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-01 16:21:46,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:21:46,215 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:46,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:46,215 INFO L85 PathProgramCache]: Analyzing trace with hash 8283375, now seen corresponding path program 29 times [2022-03-01 16:21:46,215 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:46,215 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505299469] [2022-03-01 16:21:46,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:46,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:46,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:46,362 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:46,362 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505299469] [2022-03-01 16:21:46,363 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505299469] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:21:46,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418440083] [2022-03-01 16:21:46,363 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:21:46,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:21:46,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:21:46,364 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:21:46,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-01 16:21:46,426 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:21:46,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:21:46,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:21:46,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:21:46,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:46,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:21:47,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:47,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418440083] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:21:47,215 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:21:47,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:21:47,216 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050995680] [2022-03-01 16:21:47,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:21:47,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:21:47,216 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:47,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:21:47,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:21:47,216 INFO L87 Difference]: Start difference. First operand 2547 states and 7582 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:48,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:48,951 INFO L93 Difference]: Finished difference Result 4263 states and 12331 transitions. [2022-03-01 16:21:48,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-01 16:21:48,951 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:21:48,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:48,958 INFO L225 Difference]: With dead ends: 4263 [2022-03-01 16:21:48,958 INFO L226 Difference]: Without dead ends: 4131 [2022-03-01 16:21:48,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2009 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=825, Invalid=5981, Unknown=0, NotChecked=0, Total=6806 [2022-03-01 16:21:48,958 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 567 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 2781 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:48,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 2781 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:21:48,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4131 states. [2022-03-01 16:21:48,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4131 to 2583. [2022-03-01 16:21:48,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2583 states, 2582 states have (on average 2.9763749031758326) internal successors, (7685), 2582 states have internal predecessors, (7685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:48,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 7685 transitions. [2022-03-01 16:21:48,996 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 7685 transitions. Word has length 70 [2022-03-01 16:21:48,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:48,996 INFO L470 AbstractCegarLoop]: Abstraction has 2583 states and 7685 transitions. [2022-03-01 16:21:48,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:48,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 7685 transitions. [2022-03-01 16:21:48,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:21:48,999 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:48,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:49,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-01 16:21:49,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:21:49,203 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:49,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:49,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1430331001, now seen corresponding path program 30 times [2022-03-01 16:21:49,204 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:49,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809496828] [2022-03-01 16:21:49,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:49,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:49,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:49,365 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:49,365 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809496828] [2022-03-01 16:21:49,365 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809496828] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:21:49,365 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589128524] [2022-03-01 16:21:49,365 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:21:49,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:21:49,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:21:49,366 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:21:49,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-01 16:21:49,425 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 16:21:49,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:21:49,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:21:49,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:21:49,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:49,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:21:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:50,069 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589128524] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:21:50,069 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:21:50,069 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:21:50,069 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286007638] [2022-03-01 16:21:50,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:21:50,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:21:50,069 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:50,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:21:50,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:21:50,070 INFO L87 Difference]: Start difference. First operand 2583 states and 7685 transitions. Second operand has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:50,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:50,747 INFO L93 Difference]: Finished difference Result 3172 states and 9281 transitions. [2022-03-01 16:21:50,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:21:50,747 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:21:50,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:50,752 INFO L225 Difference]: With dead ends: 3172 [2022-03-01 16:21:50,752 INFO L226 Difference]: Without dead ends: 3031 [2022-03-01 16:21:50,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=418, Invalid=2774, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:21:50,753 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 442 mSDsluCounter, 2682 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 2667 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:50,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 2667 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 16:21:50,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2022-03-01 16:21:50,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 2699. [2022-03-01 16:21:50,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2698 states have (on average 2.968124536693847) internal successors, (8008), 2698 states have internal predecessors, (8008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:50,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 8008 transitions. [2022-03-01 16:21:50,786 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 8008 transitions. Word has length 70 [2022-03-01 16:21:50,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:50,786 INFO L470 AbstractCegarLoop]: Abstraction has 2699 states and 8008 transitions. [2022-03-01 16:21:50,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:50,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 8008 transitions. [2022-03-01 16:21:50,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:21:50,789 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:50,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:50,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-01 16:21:50,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2022-03-01 16:21:50,999 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:50,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:51,000 INFO L85 PathProgramCache]: Analyzing trace with hash -924716199, now seen corresponding path program 31 times [2022-03-01 16:21:51,000 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:51,000 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828071240] [2022-03-01 16:21:51,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:51,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:51,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:51,128 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:51,128 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828071240] [2022-03-01 16:21:51,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828071240] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:21:51,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435643885] [2022-03-01 16:21:51,129 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:21:51,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:21:51,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:21:51,130 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:21:51,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-01 16:21:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:51,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:21:51,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:21:51,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:51,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:21:51,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:51,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435643885] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:21:51,989 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:21:51,989 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:21:51,989 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442236186] [2022-03-01 16:21:51,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:21:51,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:21:51,989 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:51,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:21:51,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:21:51,990 INFO L87 Difference]: Start difference. First operand 2699 states and 8008 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:56,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:21:56,782 INFO L93 Difference]: Finished difference Result 7297 states and 21595 transitions. [2022-03-01 16:21:56,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2022-03-01 16:21:56,782 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:21:56,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:21:56,794 INFO L225 Difference]: With dead ends: 7297 [2022-03-01 16:21:56,794 INFO L226 Difference]: Without dead ends: 7171 [2022-03-01 16:21:56,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11497 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=4313, Invalid=25789, Unknown=0, NotChecked=0, Total=30102 [2022-03-01 16:21:56,795 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 1040 mSDsluCounter, 2857 mSDsCounter, 0 mSdLazyCounter, 1479 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 2882 SdHoareTripleChecker+Invalid, 1645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:21:56,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1040 Valid, 2882 Invalid, 1645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1479 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:21:56,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7171 states. [2022-03-01 16:21:56,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7171 to 2923. [2022-03-01 16:21:56,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2922 states have (on average 2.9791238877481176) internal successors, (8705), 2922 states have internal predecessors, (8705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:56,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 8705 transitions. [2022-03-01 16:21:56,855 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 8705 transitions. Word has length 70 [2022-03-01 16:21:56,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:21:56,855 INFO L470 AbstractCegarLoop]: Abstraction has 2923 states and 8705 transitions. [2022-03-01 16:21:56,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:21:56,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 8705 transitions. [2022-03-01 16:21:56,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:21:56,859 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:21:56,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:21:56,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-03-01 16:21:57,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:21:57,075 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:21:57,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:21:57,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1785280403, now seen corresponding path program 32 times [2022-03-01 16:21:57,076 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:21:57,076 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609384982] [2022-03-01 16:21:57,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:21:57,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:21:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:21:57,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:57,211 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:21:57,212 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609384982] [2022-03-01 16:21:57,212 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609384982] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:21:57,212 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933070982] [2022-03-01 16:21:57,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:21:57,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:21:57,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:21:57,213 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:21:57,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-01 16:21:57,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:21:57,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:21:57,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:21:57,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:21:57,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:57,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:21:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:21:58,052 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933070982] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:21:58,052 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:21:58,052 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:21:58,052 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737582242] [2022-03-01 16:21:58,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:21:58,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:21:58,053 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:21:58,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:21:58,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=983, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:21:58,053 INFO L87 Difference]: Start difference. First operand 2923 states and 8705 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:02,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:02,851 INFO L93 Difference]: Finished difference Result 7159 states and 21275 transitions. [2022-03-01 16:22:02,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2022-03-01 16:22:02,851 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:22:02,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:02,862 INFO L225 Difference]: With dead ends: 7159 [2022-03-01 16:22:02,862 INFO L226 Difference]: Without dead ends: 7019 [2022-03-01 16:22:02,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11450 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=4310, Invalid=25792, Unknown=0, NotChecked=0, Total=30102 [2022-03-01 16:22:02,864 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 1121 mSDsluCounter, 2749 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:02,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 2761 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:22:02,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7019 states. [2022-03-01 16:22:02,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7019 to 2943. [2022-03-01 16:22:02,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2943 states, 2942 states have (on average 2.976206662134602) internal successors, (8756), 2942 states have internal predecessors, (8756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:02,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2943 states to 2943 states and 8756 transitions. [2022-03-01 16:22:02,919 INFO L78 Accepts]: Start accepts. Automaton has 2943 states and 8756 transitions. Word has length 70 [2022-03-01 16:22:02,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:02,919 INFO L470 AbstractCegarLoop]: Abstraction has 2943 states and 8756 transitions. [2022-03-01 16:22:02,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:02,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2943 states and 8756 transitions. [2022-03-01 16:22:02,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:22:02,922 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:02,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:02,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-01 16:22:03,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:22:03,123 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:03,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:03,123 INFO L85 PathProgramCache]: Analyzing trace with hash 498671457, now seen corresponding path program 33 times [2022-03-01 16:22:03,123 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:03,124 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035306757] [2022-03-01 16:22:03,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:03,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:03,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:03,233 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:03,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035306757] [2022-03-01 16:22:03,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035306757] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:22:03,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120614225] [2022-03-01 16:22:03,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:22:03,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:22:03,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:22:03,234 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:22:03,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-01 16:22:03,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 16:22:03,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:22:03,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:22:03,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:22:03,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:03,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:22:04,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:04,062 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120614225] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:22:04,062 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:22:04,062 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:22:04,062 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290421434] [2022-03-01 16:22:04,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:22:04,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:22:04,063 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:04,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:22:04,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:22:04,063 INFO L87 Difference]: Start difference. First operand 2943 states and 8756 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:09,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:09,986 INFO L93 Difference]: Finished difference Result 7372 states and 21849 transitions. [2022-03-01 16:22:09,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2022-03-01 16:22:09,986 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:22:09,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:09,998 INFO L225 Difference]: With dead ends: 7372 [2022-03-01 16:22:09,998 INFO L226 Difference]: Without dead ends: 7240 [2022-03-01 16:22:10,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15559 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=5327, Invalid=33679, Unknown=0, NotChecked=0, Total=39006 [2022-03-01 16:22:10,002 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 1137 mSDsluCounter, 3135 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:10,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 3127 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:22:10,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7240 states. [2022-03-01 16:22:10,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7240 to 2911. [2022-03-01 16:22:10,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2911 states, 2910 states have (on average 2.9786941580756015) internal successors, (8668), 2910 states have internal predecessors, (8668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:10,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2911 states to 2911 states and 8668 transitions. [2022-03-01 16:22:10,078 INFO L78 Accepts]: Start accepts. Automaton has 2911 states and 8668 transitions. Word has length 70 [2022-03-01 16:22:10,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:10,078 INFO L470 AbstractCegarLoop]: Abstraction has 2911 states and 8668 transitions. [2022-03-01 16:22:10,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:10,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2911 states and 8668 transitions. [2022-03-01 16:22:10,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:22:10,082 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:10,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:10,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-01 16:22:10,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-03-01 16:22:10,291 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:10,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:10,292 INFO L85 PathProgramCache]: Analyzing trace with hash -880369499, now seen corresponding path program 34 times [2022-03-01 16:22:10,292 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:10,292 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478976456] [2022-03-01 16:22:10,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:10,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:10,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:10,404 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:10,404 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478976456] [2022-03-01 16:22:10,404 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478976456] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:22:10,404 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240064889] [2022-03-01 16:22:10,404 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:22:10,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:22:10,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:22:10,405 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:22:10,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-01 16:22:10,472 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:22:10,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:22:10,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-01 16:22:10,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:22:10,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:10,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:22:11,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:11,128 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240064889] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:22:11,128 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:22:11,128 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:22:11,128 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841824748] [2022-03-01 16:22:11,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:22:11,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:22:11,128 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:11,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:22:11,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:22:11,129 INFO L87 Difference]: Start difference. First operand 2911 states and 8668 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:13,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:13,748 INFO L93 Difference]: Finished difference Result 6164 states and 18125 transitions. [2022-03-01 16:22:13,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-03-01 16:22:13,748 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:22:13,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:13,757 INFO L225 Difference]: With dead ends: 6164 [2022-03-01 16:22:13,757 INFO L226 Difference]: Without dead ends: 6053 [2022-03-01 16:22:13,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5871 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2442, Invalid=13560, Unknown=0, NotChecked=0, Total=16002 [2022-03-01 16:22:13,758 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 891 mSDsluCounter, 3461 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 3435 SdHoareTripleChecker+Invalid, 1712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:13,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [891 Valid, 3435 Invalid, 1712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1607 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:22:13,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6053 states. [2022-03-01 16:22:13,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6053 to 2947. [2022-03-01 16:22:13,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2947 states, 2946 states have (on average 2.9813306177868295) internal successors, (8783), 2946 states have internal predecessors, (8783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:13,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2947 states to 2947 states and 8783 transitions. [2022-03-01 16:22:13,811 INFO L78 Accepts]: Start accepts. Automaton has 2947 states and 8783 transitions. Word has length 70 [2022-03-01 16:22:13,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:13,812 INFO L470 AbstractCegarLoop]: Abstraction has 2947 states and 8783 transitions. [2022-03-01 16:22:13,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:13,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2947 states and 8783 transitions. [2022-03-01 16:22:13,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:22:13,815 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:13,815 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:13,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-01 16:22:14,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:22:14,016 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:14,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:14,016 INFO L85 PathProgramCache]: Analyzing trace with hash -438219463, now seen corresponding path program 35 times [2022-03-01 16:22:14,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:14,016 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762726795] [2022-03-01 16:22:14,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:14,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:14,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:14,137 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:14,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762726795] [2022-03-01 16:22:14,137 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762726795] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:22:14,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418924486] [2022-03-01 16:22:14,137 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:22:14,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:22:14,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:22:14,138 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:22:14,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-01 16:22:14,200 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:22:14,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:22:14,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:22:14,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:22:14,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:14,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-01 16:22:14,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418924486] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:22:14,474 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-01 16:22:14,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 25 [2022-03-01 16:22:14,474 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450573438] [2022-03-01 16:22:14,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:22:14,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-01 16:22:14,475 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:14,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-01 16:22:14,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2022-03-01 16:22:14,475 INFO L87 Difference]: Start difference. First operand 2947 states and 8783 transitions. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:14,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:14,896 INFO L93 Difference]: Finished difference Result 3382 states and 9952 transitions. [2022-03-01 16:22:14,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 16:22:14,897 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:22:14,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:14,901 INFO L225 Difference]: With dead ends: 3382 [2022-03-01 16:22:14,901 INFO L226 Difference]: Without dead ends: 3315 [2022-03-01 16:22:14,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=336, Invalid=1734, Unknown=0, NotChecked=0, Total=2070 [2022-03-01 16:22:14,902 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 212 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:14,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 1232 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 16:22:14,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3315 states. [2022-03-01 16:22:14,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3315 to 2859. [2022-03-01 16:22:14,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2859 states, 2858 states have (on average 2.9730580825752275) internal successors, (8497), 2858 states have internal predecessors, (8497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:14,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 8497 transitions. [2022-03-01 16:22:14,936 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 8497 transitions. Word has length 70 [2022-03-01 16:22:14,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:14,936 INFO L470 AbstractCegarLoop]: Abstraction has 2859 states and 8497 transitions. [2022-03-01 16:22:14,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:14,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 8497 transitions. [2022-03-01 16:22:14,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:22:14,939 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:14,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:14,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-01 16:22:15,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-03-01 16:22:15,140 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:15,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:15,140 INFO L85 PathProgramCache]: Analyzing trace with hash -2023190157, now seen corresponding path program 36 times [2022-03-01 16:22:15,141 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:15,141 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065393166] [2022-03-01 16:22:15,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:15,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:15,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:15,268 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:15,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065393166] [2022-03-01 16:22:15,268 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065393166] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:22:15,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976288654] [2022-03-01 16:22:15,268 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:22:15,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:22:15,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:22:15,270 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:22:15,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-01 16:22:15,337 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 16:22:15,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:22:15,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:22:15,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:22:15,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:15,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:22:16,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:16,106 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976288654] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:22:16,106 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:22:16,106 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:22:16,106 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828040064] [2022-03-01 16:22:16,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:22:16,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:22:16,106 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:16,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:22:16,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=972, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:22:16,107 INFO L87 Difference]: Start difference. First operand 2859 states and 8497 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:22,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:22,538 INFO L93 Difference]: Finished difference Result 7388 states and 21882 transitions. [2022-03-01 16:22:22,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2022-03-01 16:22:22,539 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:22:22,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:22,550 INFO L225 Difference]: With dead ends: 7388 [2022-03-01 16:22:22,551 INFO L226 Difference]: Without dead ends: 7248 [2022-03-01 16:22:22,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19327 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=7100, Invalid=39772, Unknown=0, NotChecked=0, Total=46872 [2022-03-01 16:22:22,553 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 1263 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:22,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1263 Valid, 2657 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:22:22,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7248 states. [2022-03-01 16:22:22,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7248 to 2899. [2022-03-01 16:22:22,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2899 states, 2898 states have (on average 2.9755003450655626) internal successors, (8623), 2898 states have internal predecessors, (8623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:22,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 8623 transitions. [2022-03-01 16:22:22,619 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 8623 transitions. Word has length 70 [2022-03-01 16:22:22,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:22,619 INFO L470 AbstractCegarLoop]: Abstraction has 2899 states and 8623 transitions. [2022-03-01 16:22:22,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:22,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 8623 transitions. [2022-03-01 16:22:22,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:22:22,622 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:22,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:22,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-01 16:22:22,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:22:22,823 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:22,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:22,823 INFO L85 PathProgramCache]: Analyzing trace with hash 985168193, now seen corresponding path program 37 times [2022-03-01 16:22:22,824 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:22,824 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173431854] [2022-03-01 16:22:22,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:22,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:22,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:22,945 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:22,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173431854] [2022-03-01 16:22:22,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173431854] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:22:22,946 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859666280] [2022-03-01 16:22:22,946 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:22:22,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:22:22,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:22:22,947 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:22:22,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-01 16:22:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:23,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:22:23,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:22:23,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:23,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:22:23,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:23,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859666280] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:22:23,787 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:22:23,787 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:22:23,787 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068245728] [2022-03-01 16:22:23,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:22:23,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:22:23,788 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:23,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:22:23,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:22:23,788 INFO L87 Difference]: Start difference. First operand 2899 states and 8623 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:31,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:31,617 INFO L93 Difference]: Finished difference Result 7844 states and 23020 transitions. [2022-03-01 16:22:31,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-03-01 16:22:31,618 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:22:31,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:31,630 INFO L225 Difference]: With dead ends: 7844 [2022-03-01 16:22:31,630 INFO L226 Difference]: Without dead ends: 7712 [2022-03-01 16:22:31,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25481 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=8557, Invalid=51223, Unknown=0, NotChecked=0, Total=59780 [2022-03-01 16:22:31,633 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 1551 mSDsluCounter, 2787 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 2799 SdHoareTripleChecker+Invalid, 1676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:31,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1551 Valid, 2799 Invalid, 1676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:22:31,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7712 states. [2022-03-01 16:22:31,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7712 to 2875. [2022-03-01 16:22:31,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2874 states have (on average 2.977383437717467) internal successors, (8557), 2874 states have internal predecessors, (8557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:31,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 8557 transitions. [2022-03-01 16:22:31,704 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 8557 transitions. Word has length 70 [2022-03-01 16:22:31,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:31,704 INFO L470 AbstractCegarLoop]: Abstraction has 2875 states and 8557 transitions. [2022-03-01 16:22:31,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:31,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 8557 transitions. [2022-03-01 16:22:31,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:22:31,708 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:31,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:31,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-03-01 16:22:31,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-03-01 16:22:31,908 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:31,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:31,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1261426403, now seen corresponding path program 38 times [2022-03-01 16:22:31,909 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:31,909 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378202703] [2022-03-01 16:22:31,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:31,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:32,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:32,023 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:32,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378202703] [2022-03-01 16:22:32,023 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378202703] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:22:32,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192397091] [2022-03-01 16:22:32,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:22:32,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:22:32,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:22:32,024 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:22:32,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-01 16:22:32,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:22:32,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:22:32,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:22:32,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:22:32,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:32,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:22:32,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:32,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192397091] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:22:32,841 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:22:32,842 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:22:32,842 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453841621] [2022-03-01 16:22:32,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:22:32,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:22:32,842 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:32,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:22:32,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:22:32,842 INFO L87 Difference]: Start difference. First operand 2875 states and 8557 transitions. Second operand has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:34,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:34,259 INFO L93 Difference]: Finished difference Result 3171 states and 9296 transitions. [2022-03-01 16:22:34,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-01 16:22:34,259 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:22:34,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:34,265 INFO L225 Difference]: With dead ends: 3171 [2022-03-01 16:22:34,265 INFO L226 Difference]: Without dead ends: 3108 [2022-03-01 16:22:34,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1955 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1327, Invalid=5645, Unknown=0, NotChecked=0, Total=6972 [2022-03-01 16:22:34,266 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 735 mSDsluCounter, 2679 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:34,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 2684 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:22:34,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2022-03-01 16:22:34,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 2895. [2022-03-01 16:22:34,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2895 states, 2894 states have (on average 2.977194194885971) internal successors, (8616), 2894 states have internal predecessors, (8616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:34,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 8616 transitions. [2022-03-01 16:22:34,299 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 8616 transitions. Word has length 70 [2022-03-01 16:22:34,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:34,299 INFO L470 AbstractCegarLoop]: Abstraction has 2895 states and 8616 transitions. [2022-03-01 16:22:34,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:34,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 8616 transitions. [2022-03-01 16:22:34,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:22:34,303 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:34,303 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:34,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-01 16:22:34,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:22:34,503 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:34,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:34,504 INFO L85 PathProgramCache]: Analyzing trace with hash -450663193, now seen corresponding path program 39 times [2022-03-01 16:22:34,504 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:34,504 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593560499] [2022-03-01 16:22:34,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:34,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:34,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:34,639 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:34,639 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593560499] [2022-03-01 16:22:34,639 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593560499] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:22:34,639 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067815433] [2022-03-01 16:22:34,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:22:34,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:22:34,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:22:34,640 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:22:34,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-01 16:22:34,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 16:22:34,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:22:34,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:22:34,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:22:34,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:34,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:22:35,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:35,463 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067815433] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:22:35,463 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:22:35,463 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:22:35,463 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552152291] [2022-03-01 16:22:35,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:22:35,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:22:35,464 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:35,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:22:35,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:22:35,464 INFO L87 Difference]: Start difference. First operand 2895 states and 8616 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:36,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:36,775 INFO L93 Difference]: Finished difference Result 3164 states and 9233 transitions. [2022-03-01 16:22:36,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-01 16:22:36,776 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:22:36,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:36,781 INFO L225 Difference]: With dead ends: 3164 [2022-03-01 16:22:36,781 INFO L226 Difference]: Without dead ends: 3101 [2022-03-01 16:22:36,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1884 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1297, Invalid=5509, Unknown=0, NotChecked=0, Total=6806 [2022-03-01 16:22:36,782 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 632 mSDsluCounter, 2316 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:36,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [632 Valid, 2338 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:22:36,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3101 states. [2022-03-01 16:22:36,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3101 to 2263. [2022-03-01 16:22:36,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 2.892130857648099) internal successors, (6542), 2262 states have internal predecessors, (6542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:36,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 6542 transitions. [2022-03-01 16:22:36,809 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 6542 transitions. Word has length 70 [2022-03-01 16:22:36,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:36,810 INFO L470 AbstractCegarLoop]: Abstraction has 2263 states and 6542 transitions. [2022-03-01 16:22:36,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:36,810 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 6542 transitions. [2022-03-01 16:22:36,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:22:36,812 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:36,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:36,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-01 16:22:37,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:22:37,013 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:37,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:37,013 INFO L85 PathProgramCache]: Analyzing trace with hash -2035633887, now seen corresponding path program 40 times [2022-03-01 16:22:37,013 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:37,013 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858037495] [2022-03-01 16:22:37,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:37,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:37,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:37,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:37,137 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:37,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858037495] [2022-03-01 16:22:37,137 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858037495] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:22:37,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598978460] [2022-03-01 16:22:37,137 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:22:37,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:22:37,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:22:37,138 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:22:37,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-01 16:22:37,208 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:22:37,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:22:37,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-01 16:22:37,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:22:37,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:37,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:22:37,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:37,832 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598978460] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:22:37,832 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:22:37,832 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:22:37,832 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721351470] [2022-03-01 16:22:37,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:22:37,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:22:37,832 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:37,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:22:37,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:22:37,833 INFO L87 Difference]: Start difference. First operand 2263 states and 6542 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:41,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:41,483 INFO L93 Difference]: Finished difference Result 4510 states and 12932 transitions. [2022-03-01 16:22:41,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-03-01 16:22:41,484 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:22:41,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:41,490 INFO L225 Difference]: With dead ends: 4510 [2022-03-01 16:22:41,491 INFO L226 Difference]: Without dead ends: 4398 [2022-03-01 16:22:41,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10124 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4209, Invalid=22851, Unknown=0, NotChecked=0, Total=27060 [2022-03-01 16:22:41,492 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 1071 mSDsluCounter, 3338 mSDsCounter, 0 mSdLazyCounter, 1787 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 3352 SdHoareTripleChecker+Invalid, 1944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:41,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1071 Valid, 3352 Invalid, 1944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1787 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:22:41,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4398 states. [2022-03-01 16:22:41,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4398 to 2271. [2022-03-01 16:22:41,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2271 states, 2270 states have (on average 2.8969162995594715) internal successors, (6576), 2270 states have internal predecessors, (6576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:41,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 6576 transitions. [2022-03-01 16:22:41,527 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 6576 transitions. Word has length 70 [2022-03-01 16:22:41,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:41,527 INFO L470 AbstractCegarLoop]: Abstraction has 2271 states and 6576 transitions. [2022-03-01 16:22:41,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:41,528 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 6576 transitions. [2022-03-01 16:22:41,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:22:41,530 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:41,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:41,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-01 16:22:41,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2022-03-01 16:22:41,731 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:41,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:41,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1492662985, now seen corresponding path program 41 times [2022-03-01 16:22:41,731 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:41,731 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932649905] [2022-03-01 16:22:41,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:41,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:41,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:41,840 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:41,840 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932649905] [2022-03-01 16:22:41,840 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932649905] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:22:41,840 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543692358] [2022-03-01 16:22:41,840 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:22:41,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:22:41,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:22:41,842 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:22:41,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-01 16:22:41,906 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:22:41,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:22:41,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:22:41,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:22:42,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:42,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:22:42,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:42,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543692358] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:22:42,681 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:22:42,681 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:22:42,681 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028114894] [2022-03-01 16:22:42,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:22:42,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:22:42,681 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:42,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:22:42,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=987, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:22:42,682 INFO L87 Difference]: Start difference. First operand 2271 states and 6576 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:45,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:45,442 INFO L93 Difference]: Finished difference Result 4929 states and 14107 transitions. [2022-03-01 16:22:45,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-03-01 16:22:45,442 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:22:45,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:45,449 INFO L225 Difference]: With dead ends: 4929 [2022-03-01 16:22:45,449 INFO L226 Difference]: Without dead ends: 4797 [2022-03-01 16:22:45,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4832 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1870, Invalid=12172, Unknown=0, NotChecked=0, Total=14042 [2022-03-01 16:22:45,450 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 937 mSDsluCounter, 3019 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 2995 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:45,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [937 Valid, 2995 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:22:45,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4797 states. [2022-03-01 16:22:45,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4797 to 2279. [2022-03-01 16:22:45,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 2278 states have (on average 2.89640035118525) internal successors, (6598), 2278 states have internal predecessors, (6598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:45,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 6598 transitions. [2022-03-01 16:22:45,486 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 6598 transitions. Word has length 70 [2022-03-01 16:22:45,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:45,487 INFO L470 AbstractCegarLoop]: Abstraction has 2279 states and 6598 transitions. [2022-03-01 16:22:45,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:45,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 6598 transitions. [2022-03-01 16:22:45,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:22:45,489 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:45,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:45,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-01 16:22:45,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:22:45,690 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:45,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:45,691 INFO L85 PathProgramCache]: Analyzing trace with hash 54048609, now seen corresponding path program 42 times [2022-03-01 16:22:45,691 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:45,691 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918993062] [2022-03-01 16:22:45,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:45,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:45,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:45,820 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:45,820 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918993062] [2022-03-01 16:22:45,820 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918993062] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:22:45,820 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814361351] [2022-03-01 16:22:45,821 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:22:45,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:22:45,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:22:45,822 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:22:45,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-01 16:22:45,890 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 16:22:45,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:22:45,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:22:45,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:22:46,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:46,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:22:46,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:46,468 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814361351] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:22:46,468 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:22:46,468 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:22:46,468 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555609200] [2022-03-01 16:22:46,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:22:46,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:22:46,468 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:46,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:22:46,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:22:46,469 INFO L87 Difference]: Start difference. First operand 2279 states and 6598 transitions. Second operand has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:47,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:47,482 INFO L93 Difference]: Finished difference Result 2897 states and 8239 transitions. [2022-03-01 16:22:47,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-01 16:22:47,482 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:22:47,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:47,486 INFO L225 Difference]: With dead ends: 2897 [2022-03-01 16:22:47,486 INFO L226 Difference]: Without dead ends: 2756 [2022-03-01 16:22:47,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1558 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=825, Invalid=4725, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 16:22:47,487 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 738 mSDsluCounter, 2816 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 2797 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:47,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 2797 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:22:47,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2022-03-01 16:22:47,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2183. [2022-03-01 16:22:47,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2183 states, 2182 states have (on average 2.8900091659028413) internal successors, (6306), 2182 states have internal predecessors, (6306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:47,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 6306 transitions. [2022-03-01 16:22:47,515 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 6306 transitions. Word has length 70 [2022-03-01 16:22:47,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:47,515 INFO L470 AbstractCegarLoop]: Abstraction has 2183 states and 6306 transitions. [2022-03-01 16:22:47,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:47,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 6306 transitions. [2022-03-01 16:22:47,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:22:47,518 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:47,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:47,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-03-01 16:22:47,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:22:47,733 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:47,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:47,733 INFO L85 PathProgramCache]: Analyzing trace with hash 2133956963, now seen corresponding path program 43 times [2022-03-01 16:22:47,734 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:47,734 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442741961] [2022-03-01 16:22:47,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:47,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:47,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:47,871 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:47,871 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442741961] [2022-03-01 16:22:47,871 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442741961] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:22:47,871 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359438828] [2022-03-01 16:22:47,872 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:22:47,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:22:47,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:22:47,873 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:22:47,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-01 16:22:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:47,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:22:47,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:22:48,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:48,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:22:48,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:48,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359438828] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:22:48,702 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:22:48,702 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:22:48,702 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68259060] [2022-03-01 16:22:48,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:22:48,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:22:48,702 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:48,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:22:48,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:22:48,703 INFO L87 Difference]: Start difference. First operand 2183 states and 6306 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:50,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:50,179 INFO L93 Difference]: Finished difference Result 4598 states and 13080 transitions. [2022-03-01 16:22:50,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-01 16:22:50,179 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:22:50,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:50,185 INFO L225 Difference]: With dead ends: 4598 [2022-03-01 16:22:50,186 INFO L226 Difference]: Without dead ends: 4523 [2022-03-01 16:22:50,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2152 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1064, Invalid=5908, Unknown=0, NotChecked=0, Total=6972 [2022-03-01 16:22:50,186 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 827 mSDsluCounter, 2402 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:50,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 2449 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:22:50,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4523 states. [2022-03-01 16:22:50,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4523 to 2247. [2022-03-01 16:22:50,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 2.885574354407836) internal successors, (6481), 2246 states have internal predecessors, (6481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:50,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 6481 transitions. [2022-03-01 16:22:50,222 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 6481 transitions. Word has length 70 [2022-03-01 16:22:50,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:50,222 INFO L470 AbstractCegarLoop]: Abstraction has 2247 states and 6481 transitions. [2022-03-01 16:22:50,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:50,222 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 6481 transitions. [2022-03-01 16:22:50,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:22:50,225 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:50,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:50,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-03-01 16:22:50,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2022-03-01 16:22:50,426 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:50,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:50,426 INFO L85 PathProgramCache]: Analyzing trace with hash 548986269, now seen corresponding path program 44 times [2022-03-01 16:22:50,426 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:50,426 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972945518] [2022-03-01 16:22:50,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:50,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:50,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:50,545 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:50,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972945518] [2022-03-01 16:22:50,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972945518] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:22:50,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169784349] [2022-03-01 16:22:50,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:22:50,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:22:50,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:22:50,546 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:22:50,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-01 16:22:50,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:22:50,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:22:50,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:22:50,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:22:50,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:50,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:22:51,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:51,415 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169784349] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:22:51,415 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:22:51,415 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:22:51,415 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258893614] [2022-03-01 16:22:51,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:22:51,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:22:51,415 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:51,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:22:51,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:22:51,416 INFO L87 Difference]: Start difference. First operand 2247 states and 6481 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:52,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:52,931 INFO L93 Difference]: Finished difference Result 4388 states and 12581 transitions. [2022-03-01 16:22:52,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-03-01 16:22:52,931 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:22:52,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:52,937 INFO L225 Difference]: With dead ends: 4388 [2022-03-01 16:22:52,937 INFO L226 Difference]: Without dead ends: 4248 [2022-03-01 16:22:52,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2279 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1073, Invalid=6237, Unknown=0, NotChecked=0, Total=7310 [2022-03-01 16:22:52,938 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 568 mSDsluCounter, 2848 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 2849 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:52,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 2849 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:22:52,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4248 states. [2022-03-01 16:22:52,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4248 to 2267. [2022-03-01 16:22:52,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2267 states, 2266 states have (on average 2.88261253309797) internal successors, (6532), 2266 states have internal predecessors, (6532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:52,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2267 states to 2267 states and 6532 transitions. [2022-03-01 16:22:52,970 INFO L78 Accepts]: Start accepts. Automaton has 2267 states and 6532 transitions. Word has length 70 [2022-03-01 16:22:52,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:52,970 INFO L470 AbstractCegarLoop]: Abstraction has 2267 states and 6532 transitions. [2022-03-01 16:22:52,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:52,970 INFO L276 IsEmpty]: Start isEmpty. Operand 2267 states and 6532 transitions. [2022-03-01 16:22:52,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:22:52,973 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:52,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:52,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-03-01 16:22:53,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:22:53,173 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:53,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:53,173 INFO L85 PathProgramCache]: Analyzing trace with hash -737622677, now seen corresponding path program 45 times [2022-03-01 16:22:53,174 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:53,174 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712932909] [2022-03-01 16:22:53,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:53,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:53,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:53,290 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:53,290 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712932909] [2022-03-01 16:22:53,290 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712932909] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:22:53,290 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6592319] [2022-03-01 16:22:53,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:22:53,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:22:53,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:22:53,293 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:22:53,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-01 16:22:53,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 16:22:53,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:22:53,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:22:53,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:22:53,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:53,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:22:54,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:54,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6592319] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:22:54,112 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:22:54,112 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:22:54,112 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385764217] [2022-03-01 16:22:54,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:22:54,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:22:54,112 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:54,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:22:54,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:22:54,113 INFO L87 Difference]: Start difference. First operand 2267 states and 6532 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:56,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:56,361 INFO L93 Difference]: Finished difference Result 4685 states and 13369 transitions. [2022-03-01 16:22:56,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-03-01 16:22:56,361 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:22:56,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:56,368 INFO L225 Difference]: With dead ends: 4685 [2022-03-01 16:22:56,368 INFO L226 Difference]: Without dead ends: 4553 [2022-03-01 16:22:56,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4133 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1639, Invalid=10351, Unknown=0, NotChecked=0, Total=11990 [2022-03-01 16:22:56,369 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 793 mSDsluCounter, 2622 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:56,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 2640 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:22:56,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4553 states. [2022-03-01 16:22:56,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4553 to 2239. [2022-03-01 16:22:56,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2239 states, 2238 states have (on average 2.884271671134942) internal successors, (6455), 2238 states have internal predecessors, (6455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:56,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2239 states to 2239 states and 6455 transitions. [2022-03-01 16:22:56,405 INFO L78 Accepts]: Start accepts. Automaton has 2239 states and 6455 transitions. Word has length 70 [2022-03-01 16:22:56,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:56,405 INFO L470 AbstractCegarLoop]: Abstraction has 2239 states and 6455 transitions. [2022-03-01 16:22:56,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:56,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2239 states and 6455 transitions. [2022-03-01 16:22:56,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:22:56,408 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:56,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:56,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-03-01 16:22:56,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-03-01 16:22:56,609 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:56,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:56,609 INFO L85 PathProgramCache]: Analyzing trace with hash -2116663633, now seen corresponding path program 46 times [2022-03-01 16:22:56,609 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:56,609 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222258070] [2022-03-01 16:22:56,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:56,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:56,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:56,727 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:56,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222258070] [2022-03-01 16:22:56,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222258070] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:22:56,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463044131] [2022-03-01 16:22:56,727 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:22:56,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:22:56,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:22:56,728 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:22:56,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-01 16:22:56,796 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:22:56,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:22:56,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-01 16:22:56,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:22:57,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:57,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:22:57,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:57,427 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463044131] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:22:57,427 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:22:57,427 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:22:57,427 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434115431] [2022-03-01 16:22:57,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:22:57,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:22:57,427 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:57,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:22:57,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:22:57,428 INFO L87 Difference]: Start difference. First operand 2239 states and 6455 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:58,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:58,198 INFO L93 Difference]: Finished difference Result 3694 states and 10488 transitions. [2022-03-01 16:22:58,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:22:58,199 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:22:58,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:58,204 INFO L225 Difference]: With dead ends: 3694 [2022-03-01 16:22:58,204 INFO L226 Difference]: Without dead ends: 3583 [2022-03-01 16:22:58,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=420, Invalid=3002, Unknown=0, NotChecked=0, Total=3422 [2022-03-01 16:22:58,205 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 478 mSDsluCounter, 3274 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 3261 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:58,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 3261 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:22:58,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2022-03-01 16:22:58,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 2261. [2022-03-01 16:22:58,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 2260 states have (on average 2.8809734513274337) internal successors, (6511), 2260 states have internal predecessors, (6511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:58,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 6511 transitions. [2022-03-01 16:22:58,235 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 6511 transitions. Word has length 70 [2022-03-01 16:22:58,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:58,236 INFO L470 AbstractCegarLoop]: Abstraction has 2261 states and 6511 transitions. [2022-03-01 16:22:58,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:58,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 6511 transitions. [2022-03-01 16:22:58,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:22:58,247 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:58,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:22:58,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-03-01 16:22:58,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:22:58,459 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:58,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:58,460 INFO L85 PathProgramCache]: Analyzing trace with hash 739689287, now seen corresponding path program 47 times [2022-03-01 16:22:58,460 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:58,460 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754835286] [2022-03-01 16:22:58,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:58,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:58,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:58,570 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:58,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754835286] [2022-03-01 16:22:58,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754835286] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:22:58,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245924114] [2022-03-01 16:22:58,570 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:22:58,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:22:58,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:22:58,571 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:22:58,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-01 16:22:58,641 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:22:58,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:22:58,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:22:58,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:22:58,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:58,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:22:59,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:59,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245924114] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:22:59,205 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:22:59,205 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:22:59,205 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762113894] [2022-03-01 16:22:59,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:22:59,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:22:59,206 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:59,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:22:59,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:22:59,206 INFO L87 Difference]: Start difference. First operand 2261 states and 6511 transitions. Second operand has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:22:59,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:59,993 INFO L93 Difference]: Finished difference Result 2798 states and 7920 transitions. [2022-03-01 16:22:59,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-01 16:22:59,993 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:22:59,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:59,997 INFO L225 Difference]: With dead ends: 2798 [2022-03-01 16:22:59,997 INFO L226 Difference]: Without dead ends: 2657 [2022-03-01 16:22:59,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=473, Invalid=3187, Unknown=0, NotChecked=0, Total=3660 [2022-03-01 16:22:59,998 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 569 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 2898 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:59,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 2898 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 16:23:00,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2022-03-01 16:23:00,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 2257. [2022-03-01 16:23:00,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 2.870567375886525) internal successors, (6476), 2256 states have internal predecessors, (6476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:00,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 6476 transitions. [2022-03-01 16:23:00,025 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 6476 transitions. Word has length 70 [2022-03-01 16:23:00,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:00,025 INFO L470 AbstractCegarLoop]: Abstraction has 2257 states and 6476 transitions. [2022-03-01 16:23:00,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:00,025 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 6476 transitions. [2022-03-01 16:23:00,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:23:00,027 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:00,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:00,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-03-01 16:23:00,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:00,228 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:00,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:00,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1789143841, now seen corresponding path program 48 times [2022-03-01 16:23:00,228 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:00,228 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050706054] [2022-03-01 16:23:00,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:00,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:00,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:00,338 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:00,338 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050706054] [2022-03-01 16:23:00,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050706054] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:23:00,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146808392] [2022-03-01 16:23:00,339 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:23:00,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:00,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:23:00,340 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:23:00,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-01 16:23:00,410 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 16:23:00,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:23:00,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:23:00,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:23:00,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:00,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:23:01,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:01,153 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146808392] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:23:01,153 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:23:01,153 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:23:01,153 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755580825] [2022-03-01 16:23:01,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:23:01,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:23:01,154 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:01,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:23:01,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:23:01,154 INFO L87 Difference]: Start difference. First operand 2257 states and 6476 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:02,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:02,963 INFO L93 Difference]: Finished difference Result 4626 states and 12971 transitions. [2022-03-01 16:23:02,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-03-01 16:23:02,963 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:23:02,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:02,969 INFO L225 Difference]: With dead ends: 4626 [2022-03-01 16:23:02,969 INFO L226 Difference]: Without dead ends: 4327 [2022-03-01 16:23:02,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2369 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=892, Invalid=6590, Unknown=0, NotChecked=0, Total=7482 [2022-03-01 16:23:02,970 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 1011 mSDsluCounter, 3263 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 3225 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:02,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1011 Valid, 3225 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:23:02,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4327 states. [2022-03-01 16:23:02,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4327 to 2221. [2022-03-01 16:23:02,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2221 states, 2220 states have (on average 2.7882882882882885) internal successors, (6190), 2220 states have internal predecessors, (6190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:02,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 6190 transitions. [2022-03-01 16:23:02,999 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 6190 transitions. Word has length 70 [2022-03-01 16:23:02,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:03,000 INFO L470 AbstractCegarLoop]: Abstraction has 2221 states and 6190 transitions. [2022-03-01 16:23:03,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:03,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 6190 transitions. [2022-03-01 16:23:03,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:23:03,002 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:03,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:03,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-03-01 16:23:03,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:03,207 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:03,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:03,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1345581259, now seen corresponding path program 49 times [2022-03-01 16:23:03,208 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:03,208 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139885999] [2022-03-01 16:23:03,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:03,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:03,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:03,316 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:03,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139885999] [2022-03-01 16:23:03,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139885999] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:23:03,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266601969] [2022-03-01 16:23:03,316 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:23:03,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:03,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:23:03,317 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:23:03,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-01 16:23:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:03,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:23:03,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:23:03,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:03,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:23:04,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:04,164 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266601969] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:23:04,164 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:23:04,164 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:23:04,164 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483848023] [2022-03-01 16:23:04,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:23:04,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:23:04,164 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:04,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:23:04,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:23:04,165 INFO L87 Difference]: Start difference. First operand 2221 states and 6190 transitions. Second operand has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:05,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:05,334 INFO L93 Difference]: Finished difference Result 3277 states and 9055 transitions. [2022-03-01 16:23:05,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-01 16:23:05,335 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:23:05,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:05,340 INFO L225 Difference]: With dead ends: 3277 [2022-03-01 16:23:05,340 INFO L226 Difference]: Without dead ends: 3130 [2022-03-01 16:23:05,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1444 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=753, Invalid=4359, Unknown=0, NotChecked=0, Total=5112 [2022-03-01 16:23:05,341 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 394 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:05,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 2910 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:23:05,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3130 states. [2022-03-01 16:23:05,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3130 to 2269. [2022-03-01 16:23:05,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2269 states, 2268 states have (on average 2.7874779541446206) internal successors, (6322), 2268 states have internal predecessors, (6322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:05,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 6322 transitions. [2022-03-01 16:23:05,368 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 6322 transitions. Word has length 70 [2022-03-01 16:23:05,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:05,368 INFO L470 AbstractCegarLoop]: Abstraction has 2269 states and 6322 transitions. [2022-03-01 16:23:05,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:05,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 6322 transitions. [2022-03-01 16:23:05,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:23:05,371 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:05,371 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:05,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-03-01 16:23:05,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:05,587 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:05,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:05,587 INFO L85 PathProgramCache]: Analyzing trace with hash -424984627, now seen corresponding path program 50 times [2022-03-01 16:23:05,587 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:05,587 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523177451] [2022-03-01 16:23:05,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:05,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:05,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:05,700 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:05,700 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523177451] [2022-03-01 16:23:05,700 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523177451] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:23:05,700 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196763580] [2022-03-01 16:23:05,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:23:05,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:05,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:23:05,701 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:23:05,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-01 16:23:05,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:23:05,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:23:05,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:23:05,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:23:06,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:06,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:23:06,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:06,542 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196763580] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:23:06,542 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:23:06,542 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:23:06,542 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174143754] [2022-03-01 16:23:06,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:23:06,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:23:06,543 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:06,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:23:06,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:23:06,543 INFO L87 Difference]: Start difference. First operand 2269 states and 6322 transitions. Second operand has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:07,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:07,717 INFO L93 Difference]: Finished difference Result 3297 states and 9110 transitions. [2022-03-01 16:23:07,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-01 16:23:07,717 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:23:07,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:07,722 INFO L225 Difference]: With dead ends: 3297 [2022-03-01 16:23:07,722 INFO L226 Difference]: Without dead ends: 3222 [2022-03-01 16:23:07,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=802, Invalid=4454, Unknown=0, NotChecked=0, Total=5256 [2022-03-01 16:23:07,723 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 428 mSDsluCounter, 2161 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 2208 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:07,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 2208 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 16:23:07,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2022-03-01 16:23:07,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 2273. [2022-03-01 16:23:07,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 2272 states have (on average 2.787411971830986) internal successors, (6333), 2272 states have internal predecessors, (6333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:07,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 6333 transitions. [2022-03-01 16:23:07,749 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 6333 transitions. Word has length 70 [2022-03-01 16:23:07,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:07,749 INFO L470 AbstractCegarLoop]: Abstraction has 2273 states and 6333 transitions. [2022-03-01 16:23:07,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:07,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 6333 transitions. [2022-03-01 16:23:07,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:23:07,751 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:07,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:07,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-01 16:23:07,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2022-03-01 16:23:07,952 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:07,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:07,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1523233091, now seen corresponding path program 51 times [2022-03-01 16:23:07,952 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:07,952 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856177384] [2022-03-01 16:23:07,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:07,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:08,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:08,065 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:08,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856177384] [2022-03-01 16:23:08,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856177384] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:23:08,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123224433] [2022-03-01 16:23:08,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:23:08,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:08,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:23:08,067 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:23:08,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-01 16:23:08,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 16:23:08,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:23:08,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:23:08,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:23:08,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:08,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:23:08,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:08,907 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123224433] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:23:08,907 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:23:08,907 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:23:08,907 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628059920] [2022-03-01 16:23:08,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:23:08,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:23:08,908 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:08,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:23:08,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=992, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:23:08,908 INFO L87 Difference]: Start difference. First operand 2273 states and 6333 transitions. Second operand has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:11,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:11,429 INFO L93 Difference]: Finished difference Result 3789 states and 10531 transitions. [2022-03-01 16:23:11,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-03-01 16:23:11,429 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:23:11,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:11,435 INFO L225 Difference]: With dead ends: 3789 [2022-03-01 16:23:11,435 INFO L226 Difference]: Without dead ends: 3714 [2022-03-01 16:23:11,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3506 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1972, Invalid=9158, Unknown=0, NotChecked=0, Total=11130 [2022-03-01 16:23:11,436 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 507 mSDsluCounter, 2311 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:11,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [507 Valid, 2348 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:23:11,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2022-03-01 16:23:11,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 2297. [2022-03-01 16:23:11,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2297 states, 2296 states have (on average 2.7905052264808363) internal successors, (6407), 2296 states have internal predecessors, (6407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:11,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2297 states to 2297 states and 6407 transitions. [2022-03-01 16:23:11,465 INFO L78 Accepts]: Start accepts. Automaton has 2297 states and 6407 transitions. Word has length 70 [2022-03-01 16:23:11,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:11,466 INFO L470 AbstractCegarLoop]: Abstraction has 2297 states and 6407 transitions. [2022-03-01 16:23:11,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:11,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2297 states and 6407 transitions. [2022-03-01 16:23:11,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:23:11,468 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:11,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:11,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-03-01 16:23:11,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:11,669 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:11,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:11,669 INFO L85 PathProgramCache]: Analyzing trace with hash 719292939, now seen corresponding path program 52 times [2022-03-01 16:23:11,669 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:11,669 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403669414] [2022-03-01 16:23:11,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:11,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:11,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:11,779 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:11,779 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403669414] [2022-03-01 16:23:11,779 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403669414] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:23:11,779 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802463651] [2022-03-01 16:23:11,779 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:23:11,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:11,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:23:11,780 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:23:11,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-01 16:23:11,871 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:23:11,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:23:11,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-01 16:23:11,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:23:12,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:12,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:23:12,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:12,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802463651] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:23:12,465 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:23:12,466 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 29 [2022-03-01 16:23:12,466 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70066200] [2022-03-01 16:23:12,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:23:12,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-01 16:23:12,466 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:12,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-01 16:23:12,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2022-03-01 16:23:12,466 INFO L87 Difference]: Start difference. First operand 2297 states and 6407 transitions. Second operand has 29 states, 29 states have (on average 3.586206896551724) internal successors, (104), 29 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:13,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:13,689 INFO L93 Difference]: Finished difference Result 3673 states and 9986 transitions. [2022-03-01 16:23:13,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-01 16:23:13,689 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.586206896551724) internal successors, (104), 29 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:23:13,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:13,694 INFO L225 Difference]: With dead ends: 3673 [2022-03-01 16:23:13,694 INFO L226 Difference]: Without dead ends: 3514 [2022-03-01 16:23:13,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=621, Invalid=3411, Unknown=0, NotChecked=0, Total=4032 [2022-03-01 16:23:13,695 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 437 mSDsluCounter, 1870 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:13,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 1924 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 16:23:13,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3514 states. [2022-03-01 16:23:13,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3514 to 2361. [2022-03-01 16:23:13,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2361 states, 2360 states have (on average 2.791101694915254) internal successors, (6587), 2360 states have internal predecessors, (6587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:13,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2361 states to 2361 states and 6587 transitions. [2022-03-01 16:23:13,725 INFO L78 Accepts]: Start accepts. Automaton has 2361 states and 6587 transitions. Word has length 70 [2022-03-01 16:23:13,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:13,725 INFO L470 AbstractCegarLoop]: Abstraction has 2361 states and 6587 transitions. [2022-03-01 16:23:13,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.586206896551724) internal successors, (104), 29 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:13,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2361 states and 6587 transitions. [2022-03-01 16:23:13,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:23:13,728 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:13,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:13,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-03-01 16:23:13,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2022-03-01 16:23:13,928 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:13,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:13,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1639889571, now seen corresponding path program 53 times [2022-03-01 16:23:13,929 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:13,929 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086672936] [2022-03-01 16:23:13,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:13,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:14,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:14,042 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:14,042 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086672936] [2022-03-01 16:23:14,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086672936] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:23:14,042 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651346124] [2022-03-01 16:23:14,042 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:23:14,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:14,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:23:14,043 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:23:14,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-01 16:23:14,113 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:23:14,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:23:14,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:23:14,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:23:14,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:14,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:23:14,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:14,893 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651346124] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:23:14,893 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:23:14,893 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-03-01 16:23:14,893 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29751757] [2022-03-01 16:23:14,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:23:14,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-01 16:23:14,894 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:14,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-01 16:23:14,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1052, Unknown=0, NotChecked=0, Total=1190 [2022-03-01 16:23:14,894 INFO L87 Difference]: Start difference. First operand 2361 states and 6587 transitions. Second operand has 35 states, 35 states have (on average 3.342857142857143) internal successors, (117), 35 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:16,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:16,977 INFO L93 Difference]: Finished difference Result 4433 states and 12291 transitions. [2022-03-01 16:23:16,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-01 16:23:16,977 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.342857142857143) internal successors, (117), 35 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:23:16,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:16,984 INFO L225 Difference]: With dead ends: 4433 [2022-03-01 16:23:16,984 INFO L226 Difference]: Without dead ends: 4295 [2022-03-01 16:23:16,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2662 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1255, Invalid=7675, Unknown=0, NotChecked=0, Total=8930 [2022-03-01 16:23:16,985 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 517 mSDsluCounter, 2847 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:16,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 2877 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:23:16,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4295 states. [2022-03-01 16:23:17,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4295 to 2541. [2022-03-01 16:23:17,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 2540 states have (on average 2.8039370078740156) internal successors, (7122), 2540 states have internal predecessors, (7122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:17,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 7122 transitions. [2022-03-01 16:23:17,020 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 7122 transitions. Word has length 70 [2022-03-01 16:23:17,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:17,020 INFO L470 AbstractCegarLoop]: Abstraction has 2541 states and 7122 transitions. [2022-03-01 16:23:17,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.342857142857143) internal successors, (117), 35 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:17,020 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 7122 transitions. [2022-03-01 16:23:17,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:23:17,023 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:17,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:17,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-03-01 16:23:17,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:17,223 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:17,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:17,223 INFO L85 PathProgramCache]: Analyzing trace with hash 603585821, now seen corresponding path program 54 times [2022-03-01 16:23:17,223 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:17,224 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719132107] [2022-03-01 16:23:17,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:17,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:17,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:17,352 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:17,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719132107] [2022-03-01 16:23:17,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719132107] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:23:17,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092901290] [2022-03-01 16:23:17,352 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:23:17,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:17,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:23:17,354 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:23:17,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-01 16:23:17,432 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 16:23:17,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:23:17,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:23:17,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:23:17,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:17,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:23:18,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:18,175 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092901290] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:23:18,175 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:23:18,175 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-03-01 16:23:18,175 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660596691] [2022-03-01 16:23:18,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:23:18,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-01 16:23:18,175 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:18,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-01 16:23:18,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=801, Unknown=0, NotChecked=0, Total=930 [2022-03-01 16:23:18,176 INFO L87 Difference]: Start difference. First operand 2541 states and 7122 transitions. Second operand has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:22,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:22,125 INFO L93 Difference]: Finished difference Result 5151 states and 14441 transitions. [2022-03-01 16:23:22,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-03-01 16:23:22,126 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:23:22,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:22,133 INFO L225 Difference]: With dead ends: 5151 [2022-03-01 16:23:22,133 INFO L226 Difference]: Without dead ends: 5076 [2022-03-01 16:23:22,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6235 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2496, Invalid=14796, Unknown=0, NotChecked=0, Total=17292 [2022-03-01 16:23:22,135 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 696 mSDsluCounter, 2552 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 2631 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:22,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 2631 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:23:22,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5076 states. [2022-03-01 16:23:22,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5076 to 2677. [2022-03-01 16:23:22,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2677 states, 2676 states have (on average 2.828101644245142) internal successors, (7568), 2676 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:22,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2677 states to 2677 states and 7568 transitions. [2022-03-01 16:23:22,174 INFO L78 Accepts]: Start accepts. Automaton has 2677 states and 7568 transitions. Word has length 70 [2022-03-01 16:23:22,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:22,174 INFO L470 AbstractCegarLoop]: Abstraction has 2677 states and 7568 transitions. [2022-03-01 16:23:22,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:22,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2677 states and 7568 transitions. [2022-03-01 16:23:22,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:23:22,177 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:22,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:22,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-03-01 16:23:22,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:22,378 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:22,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:22,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1601492827, now seen corresponding path program 55 times [2022-03-01 16:23:22,378 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:22,378 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976486516] [2022-03-01 16:23:22,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:22,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:22,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:22,490 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:22,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976486516] [2022-03-01 16:23:22,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976486516] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:23:22,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051674214] [2022-03-01 16:23:22,490 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:23:22,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:22,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:23:22,491 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:23:22,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-01 16:23:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:22,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:23:22,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:23:22,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:22,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:23:23,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:23,274 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051674214] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:23:23,274 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:23:23,274 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-03-01 16:23:23,274 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387830205] [2022-03-01 16:23:23,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:23:23,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-01 16:23:23,274 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:23,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-01 16:23:23,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2022-03-01 16:23:23,275 INFO L87 Difference]: Start difference. First operand 2677 states and 7568 transitions. Second operand has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:26,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:26,104 INFO L93 Difference]: Finished difference Result 5030 states and 14106 transitions. [2022-03-01 16:23:26,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-01 16:23:26,104 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:23:26,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:26,111 INFO L225 Difference]: With dead ends: 5030 [2022-03-01 16:23:26,111 INFO L226 Difference]: Without dead ends: 4941 [2022-03-01 16:23:26,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3617 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1555, Invalid=9575, Unknown=0, NotChecked=0, Total=11130 [2022-03-01 16:23:26,112 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 652 mSDsluCounter, 2478 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:26,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [652 Valid, 2548 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:23:26,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4941 states. [2022-03-01 16:23:26,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4941 to 3061. [2022-03-01 16:23:26,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3061 states, 3060 states have (on average 2.8705882352941177) internal successors, (8784), 3060 states have internal predecessors, (8784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:26,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3061 states to 3061 states and 8784 transitions. [2022-03-01 16:23:26,157 INFO L78 Accepts]: Start accepts. Automaton has 3061 states and 8784 transitions. Word has length 70 [2022-03-01 16:23:26,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:26,158 INFO L470 AbstractCegarLoop]: Abstraction has 3061 states and 8784 transitions. [2022-03-01 16:23:26,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:26,158 INFO L276 IsEmpty]: Start isEmpty. Operand 3061 states and 8784 transitions. [2022-03-01 16:23:26,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:23:26,161 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:26,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:26,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-03-01 16:23:26,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:26,361 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:26,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:26,362 INFO L85 PathProgramCache]: Analyzing trace with hash 541641107, now seen corresponding path program 56 times [2022-03-01 16:23:26,362 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:26,362 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241631221] [2022-03-01 16:23:26,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:26,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:26,471 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:26,472 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241631221] [2022-03-01 16:23:26,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241631221] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:23:26,472 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616627697] [2022-03-01 16:23:26,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:23:26,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:26,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:23:26,473 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:23:26,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-01 16:23:26,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:23:26,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:23:26,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:23:26,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:23:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:26,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:23:27,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:27,283 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616627697] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:23:27,283 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:23:27,284 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-03-01 16:23:27,284 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723574978] [2022-03-01 16:23:27,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:23:27,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-01 16:23:27,284 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:27,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-01 16:23:27,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2022-03-01 16:23:27,284 INFO L87 Difference]: Start difference. First operand 3061 states and 8784 transitions. Second operand has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 31 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:32,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:32,696 INFO L93 Difference]: Finished difference Result 5152 states and 14487 transitions. [2022-03-01 16:23:32,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-03-01 16:23:32,697 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 31 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:23:32,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:32,704 INFO L225 Difference]: With dead ends: 5152 [2022-03-01 16:23:32,704 INFO L226 Difference]: Without dead ends: 5077 [2022-03-01 16:23:32,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8367 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=3445, Invalid=19205, Unknown=0, NotChecked=0, Total=22650 [2022-03-01 16:23:32,706 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 610 mSDsluCounter, 3282 mSDsCounter, 0 mSdLazyCounter, 1844 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 3333 SdHoareTripleChecker+Invalid, 1950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:32,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [610 Valid, 3333 Invalid, 1950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1844 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:23:32,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5077 states. [2022-03-01 16:23:32,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5077 to 3069. [2022-03-01 16:23:32,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3069 states, 3068 states have (on average 2.8715775749674055) internal successors, (8810), 3068 states have internal predecessors, (8810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:32,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3069 states to 3069 states and 8810 transitions. [2022-03-01 16:23:32,752 INFO L78 Accepts]: Start accepts. Automaton has 3069 states and 8810 transitions. Word has length 70 [2022-03-01 16:23:32,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:32,752 INFO L470 AbstractCegarLoop]: Abstraction has 3069 states and 8810 transitions. [2022-03-01 16:23:32,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 31 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:32,752 INFO L276 IsEmpty]: Start isEmpty. Operand 3069 states and 8810 transitions. [2022-03-01 16:23:32,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:23:32,755 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:32,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:32,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-03-01 16:23:32,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:32,956 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:32,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:32,956 INFO L85 PathProgramCache]: Analyzing trace with hash -494662643, now seen corresponding path program 57 times [2022-03-01 16:23:32,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:32,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865222885] [2022-03-01 16:23:32,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:32,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:33,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:33,099 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:33,099 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865222885] [2022-03-01 16:23:33,099 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865222885] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:23:33,099 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384604130] [2022-03-01 16:23:33,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:23:33,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:33,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:23:33,100 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:23:33,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-01 16:23:33,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 16:23:33,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:23:33,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:23:33,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:23:33,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:33,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:23:33,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:33,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384604130] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:23:33,927 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:23:33,928 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-03-01 16:23:33,928 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622574261] [2022-03-01 16:23:33,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:23:33,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-01 16:23:33,928 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:33,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-01 16:23:33,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=813, Unknown=0, NotChecked=0, Total=930 [2022-03-01 16:23:33,928 INFO L87 Difference]: Start difference. First operand 3069 states and 8810 transitions. Second operand has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:40,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:40,354 INFO L93 Difference]: Finished difference Result 5557 states and 15617 transitions. [2022-03-01 16:23:40,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-03-01 16:23:40,354 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:23:40,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:40,361 INFO L225 Difference]: With dead ends: 5557 [2022-03-01 16:23:40,361 INFO L226 Difference]: Without dead ends: 5482 [2022-03-01 16:23:40,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11280 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=4217, Invalid=25195, Unknown=0, NotChecked=0, Total=29412 [2022-03-01 16:23:40,363 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 849 mSDsluCounter, 3059 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:40,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [849 Valid, 3130 Invalid, 1942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1776 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:23:40,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5482 states. [2022-03-01 16:23:40,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5482 to 3109. [2022-03-01 16:23:40,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3109 states, 3108 states have (on average 2.873873873873874) internal successors, (8932), 3108 states have internal predecessors, (8932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:40,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 8932 transitions. [2022-03-01 16:23:40,412 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 8932 transitions. Word has length 70 [2022-03-01 16:23:40,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:40,412 INFO L470 AbstractCegarLoop]: Abstraction has 3109 states and 8932 transitions. [2022-03-01 16:23:40,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:40,412 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 8932 transitions. [2022-03-01 16:23:40,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:23:40,416 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:40,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:40,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-03-01 16:23:40,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-03-01 16:23:40,617 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:40,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:40,617 INFO L85 PathProgramCache]: Analyzing trace with hash 503244363, now seen corresponding path program 58 times [2022-03-01 16:23:40,617 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:40,617 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220610332] [2022-03-01 16:23:40,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:40,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:40,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:40,735 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:40,735 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220610332] [2022-03-01 16:23:40,735 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220610332] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:23:40,736 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036488734] [2022-03-01 16:23:40,736 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:23:40,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:40,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:23:40,737 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:23:40,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-01 16:23:40,810 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:23:40,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:23:40,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-01 16:23:40,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:23:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:41,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:23:41,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:41,426 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036488734] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:23:41,427 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:23:41,427 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 29 [2022-03-01 16:23:41,427 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228835458] [2022-03-01 16:23:41,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:23:41,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-01 16:23:41,427 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:41,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-01 16:23:41,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2022-03-01 16:23:41,427 INFO L87 Difference]: Start difference. First operand 3109 states and 8932 transitions. Second operand has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:44,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:44,753 INFO L93 Difference]: Finished difference Result 6141 states and 17233 transitions. [2022-03-01 16:23:44,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-03-01 16:23:44,754 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:23:44,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:44,764 INFO L225 Difference]: With dead ends: 6141 [2022-03-01 16:23:44,764 INFO L226 Difference]: Without dead ends: 6011 [2022-03-01 16:23:44,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6530 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2733, Invalid=15357, Unknown=0, NotChecked=0, Total=18090 [2022-03-01 16:23:44,766 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 760 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 2750 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:44,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 2750 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:23:44,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2022-03-01 16:23:44,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 3721. [2022-03-01 16:23:44,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3721 states, 3720 states have (on average 2.9115591397849463) internal successors, (10831), 3720 states have internal predecessors, (10831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:44,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3721 states to 3721 states and 10831 transitions. [2022-03-01 16:23:44,840 INFO L78 Accepts]: Start accepts. Automaton has 3721 states and 10831 transitions. Word has length 70 [2022-03-01 16:23:44,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:44,840 INFO L470 AbstractCegarLoop]: Abstraction has 3721 states and 10831 transitions. [2022-03-01 16:23:44,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:44,841 INFO L276 IsEmpty]: Start isEmpty. Operand 3721 states and 10831 transitions. [2022-03-01 16:23:44,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:23:44,845 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:44,845 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:44,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-03-01 16:23:45,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:45,062 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:45,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:45,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1460351023, now seen corresponding path program 59 times [2022-03-01 16:23:45,062 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:45,062 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130316724] [2022-03-01 16:23:45,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:45,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:45,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:45,185 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:45,185 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130316724] [2022-03-01 16:23:45,185 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130316724] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:23:45,185 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420201475] [2022-03-01 16:23:45,185 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:23:45,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:45,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:23:45,187 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:23:45,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-01 16:23:45,260 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:23:45,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:23:45,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:23:45,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:23:45,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:45,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:23:45,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:45,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420201475] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:23:45,836 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:23:45,836 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:23:45,836 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115313798] [2022-03-01 16:23:45,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:23:45,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:23:45,836 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:45,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:23:45,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:23:45,837 INFO L87 Difference]: Start difference. First operand 3721 states and 10831 transitions. Second operand has 33 states, 33 states have (on average 3.242424242424242) internal successors, (107), 33 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:48,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:48,013 INFO L93 Difference]: Finished difference Result 5228 states and 15055 transitions. [2022-03-01 16:23:48,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-03-01 16:23:48,013 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.242424242424242) internal successors, (107), 33 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:23:48,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:48,021 INFO L225 Difference]: With dead ends: 5228 [2022-03-01 16:23:48,022 INFO L226 Difference]: Without dead ends: 5121 [2022-03-01 16:23:48,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6140 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2789, Invalid=15033, Unknown=0, NotChecked=0, Total=17822 [2022-03-01 16:23:48,023 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 756 mSDsluCounter, 2702 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 2779 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:48,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 2779 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:23:48,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5121 states. [2022-03-01 16:23:48,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5121 to 3585. [2022-03-01 16:23:48,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3584 states have (on average 2.914341517857143) internal successors, (10445), 3584 states have internal predecessors, (10445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 10445 transitions. [2022-03-01 16:23:48,086 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 10445 transitions. Word has length 70 [2022-03-01 16:23:48,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:48,087 INFO L470 AbstractCegarLoop]: Abstraction has 3585 states and 10445 transitions. [2022-03-01 16:23:48,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.242424242424242) internal successors, (107), 33 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:48,087 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 10445 transitions. [2022-03-01 16:23:48,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:23:48,092 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:48,092 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:48,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-03-01 16:23:48,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:48,295 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:48,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:48,296 INFO L85 PathProgramCache]: Analyzing trace with hash -462444017, now seen corresponding path program 60 times [2022-03-01 16:23:48,296 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:48,296 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402773709] [2022-03-01 16:23:48,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:48,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:48,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:48,405 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:48,405 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402773709] [2022-03-01 16:23:48,405 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402773709] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:23:48,405 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197181195] [2022-03-01 16:23:48,405 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:23:48,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:48,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:23:48,407 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:23:48,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-01 16:23:48,480 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 16:23:48,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:23:48,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:23:48,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:23:48,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:48,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:23:49,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:49,214 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197181195] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:23:49,214 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:23:49,214 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-03-01 16:23:49,214 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204734118] [2022-03-01 16:23:49,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:23:49,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-01 16:23:49,214 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:49,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-01 16:23:49,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2022-03-01 16:23:49,215 INFO L87 Difference]: Start difference. First operand 3585 states and 10445 transitions. Second operand has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:55,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:55,452 INFO L93 Difference]: Finished difference Result 7128 states and 20475 transitions. [2022-03-01 16:23:55,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-03-01 16:23:55,452 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:23:55,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:55,463 INFO L225 Difference]: With dead ends: 7128 [2022-03-01 16:23:55,463 INFO L226 Difference]: Without dead ends: 7039 [2022-03-01 16:23:55,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11748 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=4597, Invalid=26203, Unknown=0, NotChecked=0, Total=30800 [2022-03-01 16:23:55,465 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 1032 mSDsluCounter, 2211 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 2319 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:55,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1032 Valid, 2319 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:23:55,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7039 states. [2022-03-01 16:23:55,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7039 to 4073. [2022-03-01 16:23:55,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4073 states, 4072 states have (on average 2.951620825147348) internal successors, (12019), 4072 states have internal predecessors, (12019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:55,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4073 states to 4073 states and 12019 transitions. [2022-03-01 16:23:55,539 INFO L78 Accepts]: Start accepts. Automaton has 4073 states and 12019 transitions. Word has length 70 [2022-03-01 16:23:55,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:55,539 INFO L470 AbstractCegarLoop]: Abstraction has 4073 states and 12019 transitions. [2022-03-01 16:23:55,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:23:55,539 INFO L276 IsEmpty]: Start isEmpty. Operand 4073 states and 12019 transitions. [2022-03-01 16:23:55,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:23:55,544 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:55,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:55,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-03-01 16:23:55,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:55,745 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:55,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:55,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1519589779, now seen corresponding path program 61 times [2022-03-01 16:23:55,745 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:55,745 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061814868] [2022-03-01 16:23:55,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:55,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:55,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:55,862 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:55,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061814868] [2022-03-01 16:23:55,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061814868] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:23:55,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790951619] [2022-03-01 16:23:55,863 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:23:55,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:55,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:23:55,864 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:23:55,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-01 16:23:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:55,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:23:55,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:23:56,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:56,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:23:56,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:56,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790951619] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:23:56,725 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:23:56,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-03-01 16:23:56,725 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760858361] [2022-03-01 16:23:56,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:23:56,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-01 16:23:56,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:56,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-01 16:23:56,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2022-03-01 16:23:56,726 INFO L87 Difference]: Start difference. First operand 4073 states and 12019 transitions. Second operand has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:02,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:02,533 INFO L93 Difference]: Finished difference Result 7825 states and 22614 transitions. [2022-03-01 16:24:02,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-03-01 16:24:02,533 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:24:02,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:02,546 INFO L225 Difference]: With dead ends: 7825 [2022-03-01 16:24:02,546 INFO L226 Difference]: Without dead ends: 7649 [2022-03-01 16:24:02,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10620 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=4477, Invalid=22255, Unknown=0, NotChecked=0, Total=26732 [2022-03-01 16:24:02,547 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 1213 mSDsluCounter, 2688 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:02,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1213 Valid, 2744 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:24:02,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7649 states. [2022-03-01 16:24:02,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7649 to 4581. [2022-03-01 16:24:02,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4581 states, 4580 states have (on average 2.992139737991266) internal successors, (13704), 4580 states have internal predecessors, (13704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:02,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4581 states to 4581 states and 13704 transitions. [2022-03-01 16:24:02,634 INFO L78 Accepts]: Start accepts. Automaton has 4581 states and 13704 transitions. Word has length 70 [2022-03-01 16:24:02,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:02,634 INFO L470 AbstractCegarLoop]: Abstraction has 4581 states and 13704 transitions. [2022-03-01 16:24:02,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:02,634 INFO L276 IsEmpty]: Start isEmpty. Operand 4581 states and 13704 transitions. [2022-03-01 16:24:02,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:24:02,639 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:02,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:02,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-03-01 16:24:02,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:02,840 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:02,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:02,840 INFO L85 PathProgramCache]: Analyzing trace with hash -570575051, now seen corresponding path program 62 times [2022-03-01 16:24:02,841 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:02,841 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352594326] [2022-03-01 16:24:02,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:02,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:02,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:02,967 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:02,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352594326] [2022-03-01 16:24:02,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352594326] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:24:02,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373112947] [2022-03-01 16:24:02,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:24:02,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:02,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:24:02,969 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:24:02,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-01 16:24:03,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:24:03,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:24:03,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:24:03,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:24:03,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:03,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:24:03,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:03,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373112947] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:24:03,764 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:24:03,764 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 29 [2022-03-01 16:24:03,764 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323604183] [2022-03-01 16:24:03,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:24:03,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-01 16:24:03,764 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:03,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-01 16:24:03,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=707, Unknown=0, NotChecked=0, Total=812 [2022-03-01 16:24:03,765 INFO L87 Difference]: Start difference. First operand 4581 states and 13704 transitions. Second operand has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:05,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:05,867 INFO L93 Difference]: Finished difference Result 5971 states and 17267 transitions. [2022-03-01 16:24:05,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-01 16:24:05,868 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:24:05,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:05,877 INFO L225 Difference]: With dead ends: 5971 [2022-03-01 16:24:05,877 INFO L226 Difference]: Without dead ends: 5812 [2022-03-01 16:24:05,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2147 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=925, Invalid=6385, Unknown=0, NotChecked=0, Total=7310 [2022-03-01 16:24:05,878 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 681 mSDsluCounter, 2422 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:05,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 2503 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:24:05,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2022-03-01 16:24:05,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 4725. [2022-03-01 16:24:05,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4725 states, 4724 states have (on average 2.988145639288738) internal successors, (14116), 4724 states have internal predecessors, (14116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:05,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4725 states to 4725 states and 14116 transitions. [2022-03-01 16:24:05,952 INFO L78 Accepts]: Start accepts. Automaton has 4725 states and 14116 transitions. Word has length 70 [2022-03-01 16:24:05,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:05,953 INFO L470 AbstractCegarLoop]: Abstraction has 4725 states and 14116 transitions. [2022-03-01 16:24:05,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:05,953 INFO L276 IsEmpty]: Start isEmpty. Operand 4725 states and 14116 transitions. [2022-03-01 16:24:05,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:24:05,959 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:05,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:05,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-03-01 16:24:06,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:06,160 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:06,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:06,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1033019655, now seen corresponding path program 63 times [2022-03-01 16:24:06,160 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:06,161 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114062133] [2022-03-01 16:24:06,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:06,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:06,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:06,275 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:06,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114062133] [2022-03-01 16:24:06,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114062133] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:24:06,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836164187] [2022-03-01 16:24:06,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:24:06,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:06,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:24:06,276 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:24:06,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-01 16:24:06,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 16:24:06,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:24:06,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:24:06,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:24:06,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:06,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:24:07,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:07,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836164187] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:24:07,160 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:24:07,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 30 [2022-03-01 16:24:07,160 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139544200] [2022-03-01 16:24:07,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:24:07,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-01 16:24:07,160 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:07,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-01 16:24:07,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2022-03-01 16:24:07,164 INFO L87 Difference]: Start difference. First operand 4725 states and 14116 transitions. Second operand has 30 states, 30 states have (on average 3.4) internal successors, (102), 30 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:09,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:09,522 INFO L93 Difference]: Finished difference Result 5987 states and 17326 transitions. [2022-03-01 16:24:09,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-03-01 16:24:09,523 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.4) internal successors, (102), 30 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:24:09,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:09,532 INFO L225 Difference]: With dead ends: 5987 [2022-03-01 16:24:09,532 INFO L226 Difference]: Without dead ends: 5789 [2022-03-01 16:24:09,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 121 SyntacticMatches, 5 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2878 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1147, Invalid=7783, Unknown=0, NotChecked=0, Total=8930 [2022-03-01 16:24:09,533 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 578 mSDsluCounter, 2485 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:09,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 2548 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:24:09,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5789 states. [2022-03-01 16:24:09,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5789 to 4749. [2022-03-01 16:24:09,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4749 states, 4748 states have (on average 2.9869418702611625) internal successors, (14182), 4748 states have internal predecessors, (14182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:09,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4749 states to 4749 states and 14182 transitions. [2022-03-01 16:24:09,607 INFO L78 Accepts]: Start accepts. Automaton has 4749 states and 14182 transitions. Word has length 70 [2022-03-01 16:24:09,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:09,607 INFO L470 AbstractCegarLoop]: Abstraction has 4749 states and 14182 transitions. [2022-03-01 16:24:09,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.4) internal successors, (102), 30 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:09,607 INFO L276 IsEmpty]: Start isEmpty. Operand 4749 states and 14182 transitions. [2022-03-01 16:24:09,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:24:09,613 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:09,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:09,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-03-01 16:24:09,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2022-03-01 16:24:09,813 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:09,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:09,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1148726773, now seen corresponding path program 64 times [2022-03-01 16:24:09,814 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:09,814 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020624900] [2022-03-01 16:24:09,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:09,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:09,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:09,926 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:09,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020624900] [2022-03-01 16:24:09,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020624900] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:24:09,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797745881] [2022-03-01 16:24:09,926 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:24:09,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:09,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:24:09,927 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:24:09,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-01 16:24:10,003 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:24:10,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:24:10,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-01 16:24:10,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:24:10,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:10,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:24:10,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:10,616 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797745881] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:24:10,616 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:24:10,616 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 28 [2022-03-01 16:24:10,616 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153706315] [2022-03-01 16:24:10,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:24:10,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-01 16:24:10,616 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:10,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-01 16:24:10,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2022-03-01 16:24:10,617 INFO L87 Difference]: Start difference. First operand 4749 states and 14182 transitions. Second operand has 28 states, 28 states have (on average 3.607142857142857) internal successors, (101), 28 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:11,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:11,612 INFO L93 Difference]: Finished difference Result 5657 states and 16347 transitions. [2022-03-01 16:24:11,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-01 16:24:11,612 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.607142857142857) internal successors, (101), 28 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:24:11,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:11,620 INFO L225 Difference]: With dead ends: 5657 [2022-03-01 16:24:11,620 INFO L226 Difference]: Without dead ends: 5558 [2022-03-01 16:24:11,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 123 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=562, Invalid=2518, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:24:11,621 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 504 mSDsluCounter, 2033 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:11,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 2081 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 16:24:11,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5558 states. [2022-03-01 16:24:11,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5558 to 4749. [2022-03-01 16:24:11,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4749 states, 4748 states have (on average 2.98441449031171) internal successors, (14170), 4748 states have internal predecessors, (14170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:11,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4749 states to 4749 states and 14170 transitions. [2022-03-01 16:24:11,684 INFO L78 Accepts]: Start accepts. Automaton has 4749 states and 14170 transitions. Word has length 70 [2022-03-01 16:24:11,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:11,684 INFO L470 AbstractCegarLoop]: Abstraction has 4749 states and 14170 transitions. [2022-03-01 16:24:11,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.607142857142857) internal successors, (101), 28 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:11,684 INFO L276 IsEmpty]: Start isEmpty. Operand 4749 states and 14170 transitions. [2022-03-01 16:24:11,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:24:11,690 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:11,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:11,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-03-01 16:24:11,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:11,890 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:11,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:11,891 INFO L85 PathProgramCache]: Analyzing trace with hash -150819767, now seen corresponding path program 65 times [2022-03-01 16:24:11,891 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:11,891 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990212164] [2022-03-01 16:24:11,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:11,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:12,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:12,009 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:12,009 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990212164] [2022-03-01 16:24:12,009 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990212164] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:24:12,009 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610318204] [2022-03-01 16:24:12,009 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:24:12,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:12,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:24:12,011 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:24:12,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-01 16:24:12,087 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:24:12,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:24:12,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:24:12,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:24:12,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:12,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-01 16:24:12,416 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610318204] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:24:12,416 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-01 16:24:12,416 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 25 [2022-03-01 16:24:12,416 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743202654] [2022-03-01 16:24:12,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:24:12,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-01 16:24:12,416 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:12,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-01 16:24:12,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2022-03-01 16:24:12,416 INFO L87 Difference]: Start difference. First operand 4749 states and 14170 transitions. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:12,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:12,560 INFO L93 Difference]: Finished difference Result 4859 states and 14422 transitions. [2022-03-01 16:24:12,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-01 16:24:12,561 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:24:12,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:12,569 INFO L225 Difference]: With dead ends: 4859 [2022-03-01 16:24:12,569 INFO L226 Difference]: Without dead ends: 4781 [2022-03-01 16:24:12,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2022-03-01 16:24:12,570 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 126 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:12,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 830 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:24:12,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4781 states. [2022-03-01 16:24:12,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4781 to 4713. [2022-03-01 16:24:12,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4713 states, 4712 states have (on average 2.9887521222410864) internal successors, (14083), 4712 states have internal predecessors, (14083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:12,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4713 states to 4713 states and 14083 transitions. [2022-03-01 16:24:12,670 INFO L78 Accepts]: Start accepts. Automaton has 4713 states and 14083 transitions. Word has length 70 [2022-03-01 16:24:12,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:12,670 INFO L470 AbstractCegarLoop]: Abstraction has 4713 states and 14083 transitions. [2022-03-01 16:24:12,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:12,670 INFO L276 IsEmpty]: Start isEmpty. Operand 4713 states and 14083 transitions. [2022-03-01 16:24:12,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:24:12,676 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:12,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:12,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-03-01 16:24:12,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2022-03-01 16:24:12,895 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:12,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:12,896 INFO L85 PathProgramCache]: Analyzing trace with hash 2046055433, now seen corresponding path program 66 times [2022-03-01 16:24:12,896 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:12,896 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403266390] [2022-03-01 16:24:12,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:12,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:13,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:13,026 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:13,026 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403266390] [2022-03-01 16:24:13,026 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403266390] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:24:13,026 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533825725] [2022-03-01 16:24:13,026 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:24:13,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:13,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:24:13,027 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:24:13,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-01 16:24:13,108 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 16:24:13,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:24:13,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:24:13,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:24:13,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:13,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:24:13,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:13,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533825725] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:24:13,861 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:24:13,861 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2022-03-01 16:24:13,861 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152341168] [2022-03-01 16:24:13,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:24:13,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 16:24:13,861 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:13,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 16:24:13,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2022-03-01 16:24:13,862 INFO L87 Difference]: Start difference. First operand 4713 states and 14083 transitions. Second operand has 32 states, 32 states have (on average 3.21875) internal successors, (103), 32 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:16,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:16,874 INFO L93 Difference]: Finished difference Result 7586 states and 22120 transitions. [2022-03-01 16:24:16,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-03-01 16:24:16,875 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.21875) internal successors, (103), 32 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:24:16,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:16,886 INFO L225 Difference]: With dead ends: 7586 [2022-03-01 16:24:16,887 INFO L226 Difference]: Without dead ends: 7511 [2022-03-01 16:24:16,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3698 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1697, Invalid=9223, Unknown=0, NotChecked=0, Total=10920 [2022-03-01 16:24:16,888 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 553 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:16,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [553 Valid, 2674 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:24:16,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7511 states. [2022-03-01 16:24:16,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7511 to 4793. [2022-03-01 16:24:16,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4793 states, 4792 states have (on average 2.9881051752921537) internal successors, (14319), 4792 states have internal predecessors, (14319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:16,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4793 states to 4793 states and 14319 transitions. [2022-03-01 16:24:16,967 INFO L78 Accepts]: Start accepts. Automaton has 4793 states and 14319 transitions. Word has length 70 [2022-03-01 16:24:16,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:16,967 INFO L470 AbstractCegarLoop]: Abstraction has 4793 states and 14319 transitions. [2022-03-01 16:24:16,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.21875) internal successors, (103), 32 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:16,967 INFO L276 IsEmpty]: Start isEmpty. Operand 4793 states and 14319 transitions. [2022-03-01 16:24:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:24:16,973 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:16,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:16,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-03-01 16:24:17,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2022-03-01 16:24:17,174 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:17,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:17,174 INFO L85 PathProgramCache]: Analyzing trace with hash 461084739, now seen corresponding path program 67 times [2022-03-01 16:24:17,174 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:17,174 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055384268] [2022-03-01 16:24:17,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:17,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:17,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:17,288 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:17,288 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055384268] [2022-03-01 16:24:17,288 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055384268] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:24:17,288 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881737323] [2022-03-01 16:24:17,288 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:24:17,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:17,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:24:17,289 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:24:17,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-03-01 16:24:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:17,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:24:17,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:24:17,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:17,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:24:18,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:18,141 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881737323] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:24:18,141 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:24:18,141 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2022-03-01 16:24:18,141 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040981267] [2022-03-01 16:24:18,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:24:18,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 16:24:18,141 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:18,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 16:24:18,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2022-03-01 16:24:18,142 INFO L87 Difference]: Start difference. First operand 4793 states and 14319 transitions. Second operand has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:21,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:21,242 INFO L93 Difference]: Finished difference Result 7564 states and 22088 transitions. [2022-03-01 16:24:21,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-03-01 16:24:21,242 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:24:21,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:21,257 INFO L225 Difference]: With dead ends: 7564 [2022-03-01 16:24:21,257 INFO L226 Difference]: Without dead ends: 7475 [2022-03-01 16:24:21,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3759 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1701, Invalid=9429, Unknown=0, NotChecked=0, Total=11130 [2022-03-01 16:24:21,259 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 522 mSDsluCounter, 3032 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:21,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 3025 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:24:21,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7475 states. [2022-03-01 16:24:21,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7475 to 4857. [2022-03-01 16:24:21,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4857 states, 4856 states have (on average 2.985790774299835) internal successors, (14499), 4856 states have internal predecessors, (14499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:21,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4857 states to 4857 states and 14499 transitions. [2022-03-01 16:24:21,367 INFO L78 Accepts]: Start accepts. Automaton has 4857 states and 14499 transitions. Word has length 70 [2022-03-01 16:24:21,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:21,368 INFO L470 AbstractCegarLoop]: Abstraction has 4857 states and 14499 transitions. [2022-03-01 16:24:21,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:21,368 INFO L276 IsEmpty]: Start isEmpty. Operand 4857 states and 14499 transitions. [2022-03-01 16:24:21,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:24:21,374 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:21,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:21,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-03-01 16:24:21,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2022-03-01 16:24:21,575 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:21,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:21,576 INFO L85 PathProgramCache]: Analyzing trace with hash -825524207, now seen corresponding path program 68 times [2022-03-01 16:24:21,576 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:21,576 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816408658] [2022-03-01 16:24:21,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:21,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:21,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:21,698 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:21,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816408658] [2022-03-01 16:24:21,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816408658] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:24:21,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479326060] [2022-03-01 16:24:21,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:24:21,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:21,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:24:21,700 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:24:21,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-03-01 16:24:21,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:24:21,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:24:21,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:24:21,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:24:22,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:22,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:24:22,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:22,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479326060] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:24:22,521 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:24:22,521 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2022-03-01 16:24:22,521 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648789010] [2022-03-01 16:24:22,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:24:22,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 16:24:22,521 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:22,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 16:24:22,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2022-03-01 16:24:22,522 INFO L87 Difference]: Start difference. First operand 4857 states and 14499 transitions. Second operand has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:26,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:26,564 INFO L93 Difference]: Finished difference Result 8098 states and 23481 transitions. [2022-03-01 16:24:26,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-03-01 16:24:26,564 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:24:26,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:26,577 INFO L225 Difference]: With dead ends: 8098 [2022-03-01 16:24:26,577 INFO L226 Difference]: Without dead ends: 7875 [2022-03-01 16:24:26,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6149 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2252, Invalid=14778, Unknown=0, NotChecked=0, Total=17030 [2022-03-01 16:24:26,579 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 710 mSDsluCounter, 3266 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 3275 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:26,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 3275 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:24:26,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7875 states. [2022-03-01 16:24:26,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7875 to 4957. [2022-03-01 16:24:26,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4957 states, 4956 states have (on average 2.986682808716707) internal successors, (14802), 4956 states have internal predecessors, (14802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:26,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4957 states to 4957 states and 14802 transitions. [2022-03-01 16:24:26,660 INFO L78 Accepts]: Start accepts. Automaton has 4957 states and 14802 transitions. Word has length 70 [2022-03-01 16:24:26,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:26,660 INFO L470 AbstractCegarLoop]: Abstraction has 4957 states and 14802 transitions. [2022-03-01 16:24:26,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:26,660 INFO L276 IsEmpty]: Start isEmpty. Operand 4957 states and 14802 transitions. [2022-03-01 16:24:26,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:24:26,666 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:26,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:26,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-03-01 16:24:26,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2022-03-01 16:24:26,866 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:26,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:26,867 INFO L85 PathProgramCache]: Analyzing trace with hash 2090402133, now seen corresponding path program 69 times [2022-03-01 16:24:26,867 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:26,867 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525576236] [2022-03-01 16:24:26,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:26,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:27,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:27,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:27,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525576236] [2022-03-01 16:24:27,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525576236] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:24:27,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930739387] [2022-03-01 16:24:27,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:24:27,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:27,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:24:27,003 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:24:27,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-03-01 16:24:27,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 16:24:27,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:24:27,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:24:27,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:24:27,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:27,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:24:27,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:27,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930739387] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:24:27,851 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:24:27,851 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-03-01 16:24:27,851 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146804881] [2022-03-01 16:24:27,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:24:27,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-01 16:24:27,852 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:27,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-01 16:24:27,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1060, Unknown=0, NotChecked=0, Total=1190 [2022-03-01 16:24:27,852 INFO L87 Difference]: Start difference. First operand 4957 states and 14802 transitions. Second operand has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:30,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:30,057 INFO L93 Difference]: Finished difference Result 7085 states and 20759 transitions. [2022-03-01 16:24:30,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-03-01 16:24:30,058 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:24:30,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:30,068 INFO L225 Difference]: With dead ends: 7085 [2022-03-01 16:24:30,068 INFO L226 Difference]: Without dead ends: 6906 [2022-03-01 16:24:30,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2716 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1168, Invalid=7762, Unknown=0, NotChecked=0, Total=8930 [2022-03-01 16:24:30,069 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 500 mSDsluCounter, 2854 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:30,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 2877 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:24:30,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6906 states. [2022-03-01 16:24:30,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6906 to 5181. [2022-03-01 16:24:30,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5181 states, 5180 states have (on average 2.9818532818532817) internal successors, (15446), 5180 states have internal predecessors, (15446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:30,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5181 states to 5181 states and 15446 transitions. [2022-03-01 16:24:30,145 INFO L78 Accepts]: Start accepts. Automaton has 5181 states and 15446 transitions. Word has length 70 [2022-03-01 16:24:30,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:30,145 INFO L470 AbstractCegarLoop]: Abstraction has 5181 states and 15446 transitions. [2022-03-01 16:24:30,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:30,145 INFO L276 IsEmpty]: Start isEmpty. Operand 5181 states and 15446 transitions. [2022-03-01 16:24:30,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:24:30,151 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:30,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:30,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-03-01 16:24:30,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:30,352 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:30,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:30,352 INFO L85 PathProgramCache]: Analyzing trace with hash 947581475, now seen corresponding path program 70 times [2022-03-01 16:24:30,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:30,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134387381] [2022-03-01 16:24:30,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:30,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:30,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:30,464 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:30,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134387381] [2022-03-01 16:24:30,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134387381] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:24:30,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588344602] [2022-03-01 16:24:30,464 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:24:30,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:30,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:24:30,465 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:24:30,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-03-01 16:24:30,544 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:24:30,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:24:30,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-01 16:24:30,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:24:30,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:30,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:24:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:31,175 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588344602] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:24:31,175 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:24:31,175 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:24:31,175 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961453265] [2022-03-01 16:24:31,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:24:31,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:24:31,176 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:31,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:24:31,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:24:31,176 INFO L87 Difference]: Start difference. First operand 5181 states and 15446 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:33,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:33,476 INFO L93 Difference]: Finished difference Result 7732 states and 22695 transitions. [2022-03-01 16:24:33,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-03-01 16:24:33,476 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:24:33,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:33,489 INFO L225 Difference]: With dead ends: 7732 [2022-03-01 16:24:33,489 INFO L226 Difference]: Without dead ends: 7605 [2022-03-01 16:24:33,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4169 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1641, Invalid=10569, Unknown=0, NotChecked=0, Total=12210 [2022-03-01 16:24:33,490 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 681 mSDsluCounter, 2349 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:33,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 2423 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1437 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:24:33,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7605 states. [2022-03-01 16:24:33,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7605 to 5229. [2022-03-01 16:24:33,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5229 states, 5228 states have (on average 2.9820198928844683) internal successors, (15590), 5228 states have internal predecessors, (15590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:33,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5229 states to 5229 states and 15590 transitions. [2022-03-01 16:24:33,597 INFO L78 Accepts]: Start accepts. Automaton has 5229 states and 15590 transitions. Word has length 70 [2022-03-01 16:24:33,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:33,597 INFO L470 AbstractCegarLoop]: Abstraction has 5229 states and 15590 transitions. [2022-03-01 16:24:33,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:33,598 INFO L276 IsEmpty]: Start isEmpty. Operand 5229 states and 15590 transitions. [2022-03-01 16:24:33,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:24:33,603 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:33,604 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:33,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-03-01 16:24:33,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-03-01 16:24:33,806 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:33,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:33,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1340787411, now seen corresponding path program 71 times [2022-03-01 16:24:33,806 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:33,806 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840950010] [2022-03-01 16:24:33,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:33,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:33,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:33,921 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:33,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840950010] [2022-03-01 16:24:33,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840950010] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:24:33,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691354445] [2022-03-01 16:24:33,921 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:24:33,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:33,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:24:33,923 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:24:33,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-03-01 16:24:34,003 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 16:24:34,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:24:34,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:24:34,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:24:34,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:34,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:24:34,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:34,622 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691354445] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:24:34,622 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:24:34,622 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:24:34,622 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954030082] [2022-03-01 16:24:34,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:24:34,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:24:34,623 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:34,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:24:34,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:24:34,623 INFO L87 Difference]: Start difference. First operand 5229 states and 15590 transitions. Second operand has 33 states, 33 states have (on average 3.212121212121212) internal successors, (106), 33 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:35,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:35,399 INFO L93 Difference]: Finished difference Result 7120 states and 21026 transitions. [2022-03-01 16:24:35,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 16:24:35,399 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.212121212121212) internal successors, (106), 33 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:24:35,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:35,411 INFO L225 Difference]: With dead ends: 7120 [2022-03-01 16:24:35,411 INFO L226 Difference]: Without dead ends: 7057 [2022-03-01 16:24:35,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1043 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=582, Invalid=3324, Unknown=0, NotChecked=0, Total=3906 [2022-03-01 16:24:35,412 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 430 mSDsluCounter, 2021 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 2082 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:35,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 2082 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 16:24:35,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7057 states. [2022-03-01 16:24:35,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7057 to 5293. [2022-03-01 16:24:35,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5293 states, 5292 states have (on average 2.9814814814814814) internal successors, (15778), 5292 states have internal predecessors, (15778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:35,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5293 states to 5293 states and 15778 transitions. [2022-03-01 16:24:35,510 INFO L78 Accepts]: Start accepts. Automaton has 5293 states and 15778 transitions. Word has length 70 [2022-03-01 16:24:35,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:35,510 INFO L470 AbstractCegarLoop]: Abstraction has 5293 states and 15778 transitions. [2022-03-01 16:24:35,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.212121212121212) internal successors, (106), 33 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:35,510 INFO L276 IsEmpty]: Start isEmpty. Operand 5293 states and 15778 transitions. [2022-03-01 16:24:35,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:24:35,517 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:35,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:35,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-03-01 16:24:35,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-03-01 16:24:35,717 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:35,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:35,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1369209191, now seen corresponding path program 72 times [2022-03-01 16:24:35,718 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:35,718 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634375276] [2022-03-01 16:24:35,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:35,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:35,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:35,834 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:35,834 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634375276] [2022-03-01 16:24:35,834 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634375276] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:24:35,834 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897846790] [2022-03-01 16:24:35,834 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:24:35,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:35,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:24:35,835 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:24:35,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-03-01 16:24:35,919 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 16:24:35,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:24:35,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:24:35,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:24:36,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:36,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:24:36,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:36,680 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897846790] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:24:36,680 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:24:36,680 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-01 16:24:36,681 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5050799] [2022-03-01 16:24:36,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:24:36,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:24:36,681 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:36,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:24:36,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=917, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:24:36,681 INFO L87 Difference]: Start difference. First operand 5293 states and 15778 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:39,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:39,173 INFO L93 Difference]: Finished difference Result 8261 states and 24206 transitions. [2022-03-01 16:24:39,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-01 16:24:39,174 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:24:39,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:39,187 INFO L225 Difference]: With dead ends: 8261 [2022-03-01 16:24:39,187 INFO L226 Difference]: Without dead ends: 8172 [2022-03-01 16:24:39,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2641 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1226, Invalid=7146, Unknown=0, NotChecked=0, Total=8372 [2022-03-01 16:24:39,188 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 436 mSDsluCounter, 2991 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 2985 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:39,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 2985 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:24:39,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8172 states. [2022-03-01 16:24:39,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8172 to 5485. [2022-03-01 16:24:39,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5485 states, 5484 states have (on average 2.977753464624362) internal successors, (16330), 5484 states have internal predecessors, (16330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:39,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5485 states to 5485 states and 16330 transitions. [2022-03-01 16:24:39,273 INFO L78 Accepts]: Start accepts. Automaton has 5485 states and 16330 transitions. Word has length 70 [2022-03-01 16:24:39,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:39,273 INFO L470 AbstractCegarLoop]: Abstraction has 5485 states and 16330 transitions. [2022-03-01 16:24:39,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:39,273 INFO L276 IsEmpty]: Start isEmpty. Operand 5485 states and 16330 transitions. [2022-03-01 16:24:39,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:24:39,280 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:39,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:39,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-03-01 16:24:39,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2022-03-01 16:24:39,491 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:39,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:39,492 INFO L85 PathProgramCache]: Analyzing trace with hash 82600245, now seen corresponding path program 73 times [2022-03-01 16:24:39,492 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:39,492 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509001196] [2022-03-01 16:24:39,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:39,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:39,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:39,617 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:39,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509001196] [2022-03-01 16:24:39,617 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509001196] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:24:39,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555604501] [2022-03-01 16:24:39,617 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:24:39,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:39,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:24:39,619 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:24:39,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-03-01 16:24:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:39,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:24:39,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:24:39,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:39,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:24:40,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:40,460 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555604501] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:24:40,460 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:24:40,460 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-01 16:24:40,460 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966027546] [2022-03-01 16:24:40,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:24:40,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:24:40,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:40,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:24:40,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=922, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:24:40,461 INFO L87 Difference]: Start difference. First operand 5485 states and 16330 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:43,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:43,576 INFO L93 Difference]: Finished difference Result 8548 states and 24902 transitions. [2022-03-01 16:24:43,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-03-01 16:24:43,577 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:24:43,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:43,589 INFO L225 Difference]: With dead ends: 8548 [2022-03-01 16:24:43,590 INFO L226 Difference]: Without dead ends: 8347 [2022-03-01 16:24:43,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3949 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1577, Invalid=10195, Unknown=0, NotChecked=0, Total=11772 [2022-03-01 16:24:43,590 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 543 mSDsluCounter, 3181 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 3176 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:43,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [543 Valid, 3176 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:24:43,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8347 states. [2022-03-01 16:24:43,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8347 to 5393. [2022-03-01 16:24:43,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5393 states, 5392 states have (on average 2.9808976261127595) internal successors, (16073), 5392 states have internal predecessors, (16073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:43,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5393 states to 5393 states and 16073 transitions. [2022-03-01 16:24:43,674 INFO L78 Accepts]: Start accepts. Automaton has 5393 states and 16073 transitions. Word has length 70 [2022-03-01 16:24:43,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:43,674 INFO L470 AbstractCegarLoop]: Abstraction has 5393 states and 16073 transitions. [2022-03-01 16:24:43,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:43,674 INFO L276 IsEmpty]: Start isEmpty. Operand 5393 states and 16073 transitions. [2022-03-01 16:24:43,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:24:43,681 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:43,681 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:43,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-03-01 16:24:43,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:43,881 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:43,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:43,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1855705927, now seen corresponding path program 74 times [2022-03-01 16:24:43,882 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:43,882 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100213295] [2022-03-01 16:24:43,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:43,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:44,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:44,011 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:44,011 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100213295] [2022-03-01 16:24:44,011 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100213295] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:24:44,011 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854428646] [2022-03-01 16:24:44,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:24:44,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:44,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:24:44,012 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:24:44,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-03-01 16:24:44,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:24:44,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:24:44,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:24:44,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:24:44,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:44,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:24:44,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:44,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854428646] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:24:44,819 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:24:44,819 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-01 16:24:44,819 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134641813] [2022-03-01 16:24:44,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:24:44,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:24:44,819 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:44,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:24:44,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:24:44,819 INFO L87 Difference]: Start difference. First operand 5393 states and 16073 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:48,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:48,292 INFO L93 Difference]: Finished difference Result 9391 states and 27767 transitions. [2022-03-01 16:24:48,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-03-01 16:24:48,292 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:24:48,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:48,306 INFO L225 Difference]: With dead ends: 9391 [2022-03-01 16:24:48,306 INFO L226 Difference]: Without dead ends: 9321 [2022-03-01 16:24:48,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4948 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2244, Invalid=11798, Unknown=0, NotChecked=0, Total=14042 [2022-03-01 16:24:48,307 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 579 mSDsluCounter, 2837 mSDsCounter, 0 mSdLazyCounter, 1520 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:48,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 2834 Invalid, 1626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1520 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:24:48,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9321 states. [2022-03-01 16:24:48,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9321 to 5713. [2022-03-01 16:24:48,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5713 states, 5712 states have (on average 2.9903711484593836) internal successors, (17081), 5712 states have internal predecessors, (17081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:48,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5713 states to 5713 states and 17081 transitions. [2022-03-01 16:24:48,394 INFO L78 Accepts]: Start accepts. Automaton has 5713 states and 17081 transitions. Word has length 70 [2022-03-01 16:24:48,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:48,394 INFO L470 AbstractCegarLoop]: Abstraction has 5713 states and 17081 transitions. [2022-03-01 16:24:48,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:48,394 INFO L276 IsEmpty]: Start isEmpty. Operand 5713 states and 17081 transitions. [2022-03-01 16:24:48,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:24:48,402 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:48,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:48,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-03-01 16:24:48,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:48,607 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:48,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:48,608 INFO L85 PathProgramCache]: Analyzing trace with hash 569096981, now seen corresponding path program 75 times [2022-03-01 16:24:48,608 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:48,608 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779535225] [2022-03-01 16:24:48,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:48,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:48,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:48,718 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:48,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779535225] [2022-03-01 16:24:48,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779535225] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:24:48,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507288145] [2022-03-01 16:24:48,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:24:48,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:48,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:24:48,720 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:24:48,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-03-01 16:24:48,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 16:24:48,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:24:48,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:24:48,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:24:49,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:49,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:24:49,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:49,532 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507288145] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:24:49,532 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:24:49,533 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-03-01 16:24:49,533 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624895038] [2022-03-01 16:24:49,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:24:49,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-01 16:24:49,533 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:49,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-01 16:24:49,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1047, Unknown=0, NotChecked=0, Total=1190 [2022-03-01 16:24:49,533 INFO L87 Difference]: Start difference. First operand 5713 states and 17081 transitions. Second operand has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:54,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:54,453 INFO L93 Difference]: Finished difference Result 10418 states and 30896 transitions. [2022-03-01 16:24:54,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-03-01 16:24:54,454 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:24:54,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:54,471 INFO L225 Difference]: With dead ends: 10418 [2022-03-01 16:24:54,471 INFO L226 Difference]: Without dead ends: 10211 [2022-03-01 16:24:54,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10590 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4077, Invalid=23979, Unknown=0, NotChecked=0, Total=28056 [2022-03-01 16:24:54,473 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 791 mSDsluCounter, 3531 mSDsCounter, 0 mSdLazyCounter, 1879 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 3545 SdHoareTripleChecker+Invalid, 2032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:54,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [791 Valid, 3545 Invalid, 2032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1879 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:24:54,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10211 states. [2022-03-01 16:24:54,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10211 to 6809. [2022-03-01 16:24:54,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6809 states, 6808 states have (on average 3.008078730904818) internal successors, (20479), 6808 states have internal predecessors, (20479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:54,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6809 states to 6809 states and 20479 transitions. [2022-03-01 16:24:54,594 INFO L78 Accepts]: Start accepts. Automaton has 6809 states and 20479 transitions. Word has length 70 [2022-03-01 16:24:54,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:54,594 INFO L470 AbstractCegarLoop]: Abstraction has 6809 states and 20479 transitions. [2022-03-01 16:24:54,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:54,594 INFO L276 IsEmpty]: Start isEmpty. Operand 6809 states and 20479 transitions. [2022-03-01 16:24:54,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:24:54,603 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:54,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:54,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-03-01 16:24:54,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2022-03-01 16:24:54,803 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:54,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:54,804 INFO L85 PathProgramCache]: Analyzing trace with hash -845833117, now seen corresponding path program 76 times [2022-03-01 16:24:54,804 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:54,804 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668567841] [2022-03-01 16:24:54,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:54,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:54,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:54,920 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:54,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668567841] [2022-03-01 16:24:54,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668567841] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:24:54,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590322680] [2022-03-01 16:24:54,921 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:24:54,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:54,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:24:54,922 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:24:54,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-03-01 16:24:55,004 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:24:55,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:24:55,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-01 16:24:55,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:24:55,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:55,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:24:55,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:55,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590322680] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:24:55,685 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:24:55,685 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:24:55,685 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824291104] [2022-03-01 16:24:55,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:24:55,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:24:55,686 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:55,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:24:55,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:24:55,686 INFO L87 Difference]: Start difference. First operand 6809 states and 20479 transitions. Second operand has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:56,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:56,475 INFO L93 Difference]: Finished difference Result 8250 states and 24519 transitions. [2022-03-01 16:24:56,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-01 16:24:56,475 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:24:56,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:56,489 INFO L225 Difference]: With dead ends: 8250 [2022-03-01 16:24:56,490 INFO L226 Difference]: Without dead ends: 8187 [2022-03-01 16:24:56,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=496, Invalid=2810, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:24:56,490 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 393 mSDsluCounter, 2386 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:56,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 2449 Invalid, 1192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:24:56,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8187 states. [2022-03-01 16:24:56,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8187 to 6813. [2022-03-01 16:24:56,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6813 states, 6812 states have (on average 3.0079271873165) internal successors, (20490), 6812 states have internal predecessors, (20490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:56,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6813 states to 6813 states and 20490 transitions. [2022-03-01 16:24:56,590 INFO L78 Accepts]: Start accepts. Automaton has 6813 states and 20490 transitions. Word has length 70 [2022-03-01 16:24:56,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:56,591 INFO L470 AbstractCegarLoop]: Abstraction has 6813 states and 20490 transitions. [2022-03-01 16:24:56,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:56,591 INFO L276 IsEmpty]: Start isEmpty. Operand 6813 states and 20490 transitions. [2022-03-01 16:24:56,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:24:56,600 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:56,600 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:56,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-03-01 16:24:56,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:56,801 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:56,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:56,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1864163485, now seen corresponding path program 77 times [2022-03-01 16:24:56,801 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:56,801 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967749985] [2022-03-01 16:24:56,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:56,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:56,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:56,965 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:56,965 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967749985] [2022-03-01 16:24:56,965 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967749985] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:24:56,965 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579181681] [2022-03-01 16:24:56,966 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:24:56,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:56,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:24:56,967 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:24:56,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-03-01 16:24:57,058 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 16:24:57,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:24:57,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:24:57,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:24:57,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:57,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:24:57,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:57,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579181681] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:24:57,725 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:24:57,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:24:57,725 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924353566] [2022-03-01 16:24:57,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:24:57,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:24:57,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:57,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:24:57,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:24:57,726 INFO L87 Difference]: Start difference. First operand 6813 states and 20490 transitions. Second operand has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:58,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:58,542 INFO L93 Difference]: Finished difference Result 8670 states and 25800 transitions. [2022-03-01 16:24:58,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 16:24:58,542 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:24:58,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:58,557 INFO L225 Difference]: With dead ends: 8670 [2022-03-01 16:24:58,557 INFO L226 Difference]: Without dead ends: 8592 [2022-03-01 16:24:58,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=629, Invalid=3531, Unknown=0, NotChecked=0, Total=4160 [2022-03-01 16:24:58,558 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 324 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:58,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 1935 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 16:24:58,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8592 states. [2022-03-01 16:24:58,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8592 to 7069. [2022-03-01 16:24:58,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7069 states, 7068 states have (on average 2.999151103565365) internal successors, (21198), 7068 states have internal predecessors, (21198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:58,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7069 states to 7069 states and 21198 transitions. [2022-03-01 16:24:58,669 INFO L78 Accepts]: Start accepts. Automaton has 7069 states and 21198 transitions. Word has length 70 [2022-03-01 16:24:58,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:58,669 INFO L470 AbstractCegarLoop]: Abstraction has 7069 states and 21198 transitions. [2022-03-01 16:24:58,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:58,669 INFO L276 IsEmpty]: Start isEmpty. Operand 7069 states and 21198 transitions. [2022-03-01 16:24:58,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:24:58,678 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:58,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:58,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-03-01 16:24:58,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:58,883 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:58,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:58,883 INFO L85 PathProgramCache]: Analyzing trace with hash -801486417, now seen corresponding path program 78 times [2022-03-01 16:24:58,884 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:58,884 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418896081] [2022-03-01 16:24:58,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:58,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:59,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:59,004 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:59,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418896081] [2022-03-01 16:24:59,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418896081] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:24:59,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447677049] [2022-03-01 16:24:59,004 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:24:59,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:59,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:24:59,005 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:24:59,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-03-01 16:24:59,095 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 16:24:59,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:24:59,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:24:59,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:24:59,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:59,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:24:59,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:24:59,903 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447677049] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:24:59,903 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:24:59,903 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-01 16:24:59,903 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847559424] [2022-03-01 16:24:59,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:24:59,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:24:59,903 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:59,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:24:59,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:24:59,904 INFO L87 Difference]: Start difference. First operand 7069 states and 21198 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:02,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:02,593 INFO L93 Difference]: Finished difference Result 9783 states and 28923 transitions. [2022-03-01 16:25:02,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-01 16:25:02,593 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:25:02,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:02,609 INFO L225 Difference]: With dead ends: 9783 [2022-03-01 16:25:02,609 INFO L226 Difference]: Without dead ends: 9557 [2022-03-01 16:25:02,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3056 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1259, Invalid=8641, Unknown=0, NotChecked=0, Total=9900 [2022-03-01 16:25:02,610 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 540 mSDsluCounter, 2793 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 2823 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:02,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [540 Valid, 2823 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:25:02,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9557 states. [2022-03-01 16:25:02,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9557 to 7145. [2022-03-01 16:25:02,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7145 states, 7144 states have (on average 2.9959406494960805) internal successors, (21403), 7144 states have internal predecessors, (21403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:02,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7145 states to 7145 states and 21403 transitions. [2022-03-01 16:25:02,723 INFO L78 Accepts]: Start accepts. Automaton has 7145 states and 21403 transitions. Word has length 70 [2022-03-01 16:25:02,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:02,723 INFO L470 AbstractCegarLoop]: Abstraction has 7145 states and 21403 transitions. [2022-03-01 16:25:02,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:02,723 INFO L276 IsEmpty]: Start isEmpty. Operand 7145 states and 21403 transitions. [2022-03-01 16:25:02,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:25:02,732 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:02,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:02,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-03-01 16:25:02,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:25:02,933 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:02,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:02,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1944307075, now seen corresponding path program 79 times [2022-03-01 16:25:02,933 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:02,933 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132656482] [2022-03-01 16:25:02,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:02,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:03,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:03,062 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:03,062 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132656482] [2022-03-01 16:25:03,062 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132656482] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:25:03,062 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201429922] [2022-03-01 16:25:03,062 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:25:03,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:25:03,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:25:03,063 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:25:03,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-03-01 16:25:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:03,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:25:03,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:25:03,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:03,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:25:03,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:03,888 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201429922] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:25:03,888 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:25:03,888 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-01 16:25:03,888 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640592089] [2022-03-01 16:25:03,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:25:03,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:25:03,888 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:03,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:25:03,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:25:03,889 INFO L87 Difference]: Start difference. First operand 7145 states and 21403 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:07,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:07,852 INFO L93 Difference]: Finished difference Result 12364 states and 36685 transitions. [2022-03-01 16:25:07,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-03-01 16:25:07,852 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:25:07,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:07,875 INFO L225 Difference]: With dead ends: 12364 [2022-03-01 16:25:07,876 INFO L226 Difference]: Without dead ends: 12286 [2022-03-01 16:25:07,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6266 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2687, Invalid=14869, Unknown=0, NotChecked=0, Total=17556 [2022-03-01 16:25:07,877 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 618 mSDsluCounter, 2753 mSDsCounter, 0 mSdLazyCounter, 1620 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 2806 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:07,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 2806 Invalid, 1729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1620 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:25:07,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12286 states. [2022-03-01 16:25:07,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12286 to 7585. [2022-03-01 16:25:08,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7585 states, 7584 states have (on average 3.0038238396624473) internal successors, (22781), 7584 states have internal predecessors, (22781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:08,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7585 states to 7585 states and 22781 transitions. [2022-03-01 16:25:08,020 INFO L78 Accepts]: Start accepts. Automaton has 7585 states and 22781 transitions. Word has length 70 [2022-03-01 16:25:08,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:08,020 INFO L470 AbstractCegarLoop]: Abstraction has 7585 states and 22781 transitions. [2022-03-01 16:25:08,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:08,020 INFO L276 IsEmpty]: Start isEmpty. Operand 7585 states and 22781 transitions. [2022-03-01 16:25:08,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:25:08,030 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:08,030 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:08,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-03-01 16:25:08,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-03-01 16:25:08,231 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:08,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:08,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1064051275, now seen corresponding path program 80 times [2022-03-01 16:25:08,231 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:08,231 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83650949] [2022-03-01 16:25:08,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:08,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:08,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:08,339 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:08,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83650949] [2022-03-01 16:25:08,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83650949] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:25:08,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803066303] [2022-03-01 16:25:08,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:25:08,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:25:08,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:25:08,341 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:25:08,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-03-01 16:25:08,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:25:08,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:25:08,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:25:08,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:25:08,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:08,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:25:09,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:09,222 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803066303] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:25:09,222 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:25:09,222 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-01 16:25:09,222 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121422999] [2022-03-01 16:25:09,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:25:09,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:25:09,222 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:09,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:25:09,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=922, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:25:09,223 INFO L87 Difference]: Start difference. First operand 7585 states and 22781 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:14,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:14,058 INFO L93 Difference]: Finished difference Result 13169 states and 38887 transitions. [2022-03-01 16:25:14,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-03-01 16:25:14,058 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:25:14,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:14,083 INFO L225 Difference]: With dead ends: 13169 [2022-03-01 16:25:14,083 INFO L226 Difference]: Without dead ends: 12961 [2022-03-01 16:25:14,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9122 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3474, Invalid=20706, Unknown=0, NotChecked=0, Total=24180 [2022-03-01 16:25:14,086 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 873 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 2994 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:14,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 2994 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1685 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:25:14,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12961 states. [2022-03-01 16:25:14,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12961 to 8545. [2022-03-01 16:25:14,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8545 states, 8544 states have (on average 3.0038623595505616) internal successors, (25665), 8544 states have internal predecessors, (25665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:14,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8545 states to 8545 states and 25665 transitions. [2022-03-01 16:25:14,261 INFO L78 Accepts]: Start accepts. Automaton has 8545 states and 25665 transitions. Word has length 70 [2022-03-01 16:25:14,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:14,261 INFO L470 AbstractCegarLoop]: Abstraction has 8545 states and 25665 transitions. [2022-03-01 16:25:14,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:14,261 INFO L276 IsEmpty]: Start isEmpty. Operand 8545 states and 25665 transitions. [2022-03-01 16:25:14,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:25:14,272 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:14,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:14,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-03-01 16:25:14,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-03-01 16:25:14,473 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:14,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:14,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1956750805, now seen corresponding path program 81 times [2022-03-01 16:25:14,473 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:14,474 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255144101] [2022-03-01 16:25:14,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:14,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:14,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:14,586 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:14,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255144101] [2022-03-01 16:25:14,586 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255144101] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:25:14,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898451947] [2022-03-01 16:25:14,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:25:14,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:25:14,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:25:14,587 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:25:14,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-03-01 16:25:14,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 16:25:14,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:25:14,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:25:14,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:25:14,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:14,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:25:15,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:15,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898451947] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:25:15,439 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:25:15,439 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-01 16:25:15,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669669003] [2022-03-01 16:25:15,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:25:15,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:25:15,440 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:15,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:25:15,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:25:15,440 INFO L87 Difference]: Start difference. First operand 8545 states and 25665 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:21,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:21,158 INFO L93 Difference]: Finished difference Result 15093 states and 44939 transitions. [2022-03-01 16:25:21,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2022-03-01 16:25:21,159 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:25:21,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:21,190 INFO L225 Difference]: With dead ends: 15093 [2022-03-01 16:25:21,190 INFO L226 Difference]: Without dead ends: 15004 [2022-03-01 16:25:21,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12633 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=4476, Invalid=28466, Unknown=0, NotChecked=0, Total=32942 [2022-03-01 16:25:21,192 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 786 mSDsluCounter, 3009 mSDsCounter, 0 mSdLazyCounter, 1758 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 3099 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:21,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [786 Valid, 3099 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1758 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:25:21,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15004 states. [2022-03-01 16:25:21,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15004 to 8781. [2022-03-01 16:25:21,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8781 states, 8780 states have (on average 3.0093394077448745) internal successors, (26422), 8780 states have internal predecessors, (26422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:21,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8781 states to 8781 states and 26422 transitions. [2022-03-01 16:25:21,402 INFO L78 Accepts]: Start accepts. Automaton has 8781 states and 26422 transitions. Word has length 70 [2022-03-01 16:25:21,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:21,402 INFO L470 AbstractCegarLoop]: Abstraction has 8781 states and 26422 transitions. [2022-03-01 16:25:21,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:21,402 INFO L276 IsEmpty]: Start isEmpty. Operand 8781 states and 26422 transitions. [2022-03-01 16:25:21,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:25:21,414 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:21,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:21,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-03-01 16:25:21,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2022-03-01 16:25:21,615 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:21,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:21,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1791018719, now seen corresponding path program 82 times [2022-03-01 16:25:21,615 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:21,616 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444160009] [2022-03-01 16:25:21,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:21,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:21,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:21,733 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:21,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444160009] [2022-03-01 16:25:21,734 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444160009] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:25:21,734 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198493759] [2022-03-01 16:25:21,734 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:25:21,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:25:21,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:25:21,735 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:25:21,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-03-01 16:25:21,820 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:25:21,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:25:21,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-01 16:25:21,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:25:22,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:22,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:25:22,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:22,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198493759] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:25:22,451 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:25:22,451 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:25:22,451 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179120570] [2022-03-01 16:25:22,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:25:22,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:25:22,452 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:22,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:25:22,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:25:22,452 INFO L87 Difference]: Start difference. First operand 8781 states and 26422 transitions. Second operand has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:23,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:23,959 INFO L93 Difference]: Finished difference Result 11574 states and 34306 transitions. [2022-03-01 16:25:23,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-01 16:25:23,960 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:25:23,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:23,978 INFO L225 Difference]: With dead ends: 11574 [2022-03-01 16:25:23,979 INFO L226 Difference]: Without dead ends: 11499 [2022-03-01 16:25:23,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2256 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1028, Invalid=6112, Unknown=0, NotChecked=0, Total=7140 [2022-03-01 16:25:23,979 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 574 mSDsluCounter, 2627 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 2680 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:23,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 2680 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1437 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:25:23,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11499 states. [2022-03-01 16:25:24,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11499 to 8805. [2022-03-01 16:25:24,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8805 states, 8804 states have (on average 3.008632439800091) internal successors, (26488), 8804 states have internal predecessors, (26488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:24,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8805 states to 8805 states and 26488 transitions. [2022-03-01 16:25:24,125 INFO L78 Accepts]: Start accepts. Automaton has 8805 states and 26488 transitions. Word has length 70 [2022-03-01 16:25:24,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:24,125 INFO L470 AbstractCegarLoop]: Abstraction has 8805 states and 26488 transitions. [2022-03-01 16:25:24,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:24,126 INFO L276 IsEmpty]: Start isEmpty. Operand 8805 states and 26488 transitions. [2022-03-01 16:25:24,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:25:24,137 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:24,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:24,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-03-01 16:25:24,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2022-03-01 16:25:24,338 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:24,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:24,338 INFO L85 PathProgramCache]: Analyzing trace with hash 206048025, now seen corresponding path program 83 times [2022-03-01 16:25:24,338 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:24,338 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915202268] [2022-03-01 16:25:24,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:24,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:24,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:24,533 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:24,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915202268] [2022-03-01 16:25:24,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915202268] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:25:24,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853412417] [2022-03-01 16:25:24,533 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:25:24,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:25:24,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:25:24,534 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:25:24,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-03-01 16:25:24,618 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 16:25:24,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:25:24,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:25:24,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:25:24,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:24,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:25:25,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:25,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853412417] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:25:25,287 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:25:25,287 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:25:25,287 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718844103] [2022-03-01 16:25:25,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:25:25,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:25:25,287 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:25,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:25:25,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:25:25,287 INFO L87 Difference]: Start difference. First operand 8805 states and 26488 transitions. Second operand has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:26,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:26,489 INFO L93 Difference]: Finished difference Result 11718 states and 35118 transitions. [2022-03-01 16:25:26,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-03-01 16:25:26,489 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:25:26,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:26,508 INFO L225 Difference]: With dead ends: 11718 [2022-03-01 16:25:26,508 INFO L226 Difference]: Without dead ends: 11640 [2022-03-01 16:25:26,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2026 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1075, Invalid=5405, Unknown=0, NotChecked=0, Total=6480 [2022-03-01 16:25:26,509 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 386 mSDsluCounter, 1913 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:26,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 1985 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:25:26,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11640 states. [2022-03-01 16:25:26,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11640 to 8957. [2022-03-01 16:25:26,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8957 states, 8956 states have (on average 3.014068780705672) internal successors, (26994), 8956 states have internal predecessors, (26994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:26,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8957 states to 8957 states and 26994 transitions. [2022-03-01 16:25:26,718 INFO L78 Accepts]: Start accepts. Automaton has 8957 states and 26994 transitions. Word has length 70 [2022-03-01 16:25:26,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:26,718 INFO L470 AbstractCegarLoop]: Abstraction has 8957 states and 26994 transitions. [2022-03-01 16:25:26,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:26,718 INFO L276 IsEmpty]: Start isEmpty. Operand 8957 states and 26994 transitions. [2022-03-01 16:25:26,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:25:26,730 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:26,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:26,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-03-01 16:25:26,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:25:26,931 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:26,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:26,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1835365419, now seen corresponding path program 84 times [2022-03-01 16:25:26,931 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:26,931 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612255566] [2022-03-01 16:25:26,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:26,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:27,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:27,041 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:27,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612255566] [2022-03-01 16:25:27,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612255566] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:25:27,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276318498] [2022-03-01 16:25:27,041 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:25:27,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:25:27,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:25:27,042 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:25:27,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-03-01 16:25:27,131 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 16:25:27,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:25:27,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:25:27,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:25:27,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:27,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:25:27,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:27,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276318498] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:25:27,884 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:25:27,884 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-01 16:25:27,884 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116445988] [2022-03-01 16:25:27,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:25:27,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:25:27,884 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:27,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:25:27,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:25:27,885 INFO L87 Difference]: Start difference. First operand 8957 states and 26994 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:31,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:31,923 INFO L93 Difference]: Finished difference Result 12589 states and 37341 transitions. [2022-03-01 16:25:31,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-03-01 16:25:31,923 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:25:31,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:31,972 INFO L225 Difference]: With dead ends: 12589 [2022-03-01 16:25:31,972 INFO L226 Difference]: Without dead ends: 12363 [2022-03-01 16:25:31,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6416 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2449, Invalid=15373, Unknown=0, NotChecked=0, Total=17822 [2022-03-01 16:25:31,973 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 755 mSDsluCounter, 2784 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 2810 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:31,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 2810 Invalid, 1618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:25:31,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12363 states. [2022-03-01 16:25:32,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12363 to 9093. [2022-03-01 16:25:32,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9093 states, 9092 states have (on average 3.0153981522217332) internal successors, (27416), 9092 states have internal predecessors, (27416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:32,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9093 states to 9093 states and 27416 transitions. [2022-03-01 16:25:32,141 INFO L78 Accepts]: Start accepts. Automaton has 9093 states and 27416 transitions. Word has length 70 [2022-03-01 16:25:32,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:32,141 INFO L470 AbstractCegarLoop]: Abstraction has 9093 states and 27416 transitions. [2022-03-01 16:25:32,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:32,141 INFO L276 IsEmpty]: Start isEmpty. Operand 9093 states and 27416 transitions. [2022-03-01 16:25:32,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:25:32,154 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:32,154 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:32,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-03-01 16:25:32,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:25:32,354 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:32,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:32,355 INFO L85 PathProgramCache]: Analyzing trace with hash 692544761, now seen corresponding path program 85 times [2022-03-01 16:25:32,355 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:32,355 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445276010] [2022-03-01 16:25:32,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:32,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:32,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:32,465 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:32,465 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445276010] [2022-03-01 16:25:32,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445276010] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:25:32,465 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484185782] [2022-03-01 16:25:32,465 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:25:32,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:25:32,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:25:32,467 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:25:32,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-03-01 16:25:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:32,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:25:32,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:25:32,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:32,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:25:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:33,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484185782] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:25:33,296 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:25:33,296 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-01 16:25:33,296 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911536653] [2022-03-01 16:25:33,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:25:33,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:25:33,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:33,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:25:33,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=898, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:25:33,297 INFO L87 Difference]: Start difference. First operand 9093 states and 27416 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:37,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:37,008 INFO L93 Difference]: Finished difference Result 13905 states and 41521 transitions. [2022-03-01 16:25:37,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-03-01 16:25:37,009 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:25:37,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:37,036 INFO L225 Difference]: With dead ends: 13905 [2022-03-01 16:25:37,036 INFO L226 Difference]: Without dead ends: 13819 [2022-03-01 16:25:37,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6479 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3010, Invalid=14546, Unknown=0, NotChecked=0, Total=17556 [2022-03-01 16:25:37,037 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 748 mSDsluCounter, 2459 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 2531 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:37,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [748 Valid, 2531 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:25:37,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13819 states. [2022-03-01 16:25:37,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13819 to 9969. [2022-03-01 16:25:37,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9969 states, 9968 states have (on average 3.0217696629213484) internal successors, (30121), 9968 states have internal predecessors, (30121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:37,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9969 states to 9969 states and 30121 transitions. [2022-03-01 16:25:37,239 INFO L78 Accepts]: Start accepts. Automaton has 9969 states and 30121 transitions. Word has length 70 [2022-03-01 16:25:37,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:37,239 INFO L470 AbstractCegarLoop]: Abstraction has 9969 states and 30121 transitions. [2022-03-01 16:25:37,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:37,239 INFO L276 IsEmpty]: Start isEmpty. Operand 9969 states and 30121 transitions. [2022-03-01 16:25:37,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:25:37,252 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:37,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:37,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-03-01 16:25:37,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2022-03-01 16:25:37,453 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:37,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:37,453 INFO L85 PathProgramCache]: Analyzing trace with hash 680101031, now seen corresponding path program 86 times [2022-03-01 16:25:37,453 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:37,453 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444398090] [2022-03-01 16:25:37,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:37,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:37,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:37,573 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:37,573 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444398090] [2022-03-01 16:25:37,573 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444398090] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:25:37,573 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028188824] [2022-03-01 16:25:37,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:25:37,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:25:37,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:25:37,574 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:25:37,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-03-01 16:25:37,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:25:37,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:25:37,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:25:37,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:25:37,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:37,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:25:38,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:38,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028188824] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:25:38,447 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:25:38,447 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-01 16:25:38,447 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855009114] [2022-03-01 16:25:38,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:25:38,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:25:38,447 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:38,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:25:38,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:25:38,448 INFO L87 Difference]: Start difference. First operand 9969 states and 30121 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:42,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:42,497 INFO L93 Difference]: Finished difference Result 16134 states and 48531 transitions. [2022-03-01 16:25:42,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-03-01 16:25:42,497 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:25:42,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:42,531 INFO L225 Difference]: With dead ends: 16134 [2022-03-01 16:25:42,531 INFO L226 Difference]: Without dead ends: 16045 [2022-03-01 16:25:42,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6718 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3044, Invalid=15316, Unknown=0, NotChecked=0, Total=18360 [2022-03-01 16:25:42,532 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 862 mSDsluCounter, 2967 mSDsCounter, 0 mSdLazyCounter, 1649 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 3033 SdHoareTripleChecker+Invalid, 1810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:42,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [862 Valid, 3033 Invalid, 1810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1649 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:25:42,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16045 states. [2022-03-01 16:25:42,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16045 to 10725. [2022-03-01 16:25:42,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10725 states, 10724 states have (on average 3.0365535248041775) internal successors, (32564), 10724 states have internal predecessors, (32564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:42,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10725 states to 10725 states and 32564 transitions. [2022-03-01 16:25:42,789 INFO L78 Accepts]: Start accepts. Automaton has 10725 states and 32564 transitions. Word has length 70 [2022-03-01 16:25:42,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:42,789 INFO L470 AbstractCegarLoop]: Abstraction has 10725 states and 32564 transitions. [2022-03-01 16:25:42,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:42,789 INFO L276 IsEmpty]: Start isEmpty. Operand 10725 states and 32564 transitions. [2022-03-01 16:25:42,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:25:42,805 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:42,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:42,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-03-01 16:25:43,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:25:43,005 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:43,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:43,006 INFO L85 PathProgramCache]: Analyzing trace with hash -86569393, now seen corresponding path program 87 times [2022-03-01 16:25:43,006 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:43,006 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247088287] [2022-03-01 16:25:43,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:43,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:43,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:43,115 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:43,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247088287] [2022-03-01 16:25:43,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247088287] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:25:43,116 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000063767] [2022-03-01 16:25:43,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:25:43,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:25:43,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:25:43,117 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:25:43,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-03-01 16:25:43,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 16:25:43,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:25:43,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:25:43,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:25:43,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:43,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:25:43,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:43,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000063767] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:25:43,958 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:25:43,958 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-03-01 16:25:43,959 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815781775] [2022-03-01 16:25:43,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:25:43,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-01 16:25:43,959 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:43,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-01 16:25:43,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1055, Unknown=0, NotChecked=0, Total=1190 [2022-03-01 16:25:43,959 INFO L87 Difference]: Start difference. First operand 10725 states and 32564 transitions. Second operand has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:45,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:45,585 INFO L93 Difference]: Finished difference Result 12758 states and 38181 transitions. [2022-03-01 16:25:45,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-01 16:25:45,586 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:25:45,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:45,612 INFO L225 Difference]: With dead ends: 12758 [2022-03-01 16:25:45,612 INFO L226 Difference]: Without dead ends: 12583 [2022-03-01 16:25:45,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1787 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=765, Invalid=5397, Unknown=0, NotChecked=0, Total=6162 [2022-03-01 16:25:45,613 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 483 mSDsluCounter, 2403 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:45,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [483 Valid, 2435 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:25:45,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12583 states. [2022-03-01 16:25:45,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12583 to 11021. [2022-03-01 16:25:45,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11021 states, 11020 states have (on average 3.0339382940108894) internal successors, (33434), 11020 states have internal predecessors, (33434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:45,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11021 states to 11021 states and 33434 transitions. [2022-03-01 16:25:45,809 INFO L78 Accepts]: Start accepts. Automaton has 11021 states and 33434 transitions. Word has length 70 [2022-03-01 16:25:45,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:45,810 INFO L470 AbstractCegarLoop]: Abstraction has 11021 states and 33434 transitions. [2022-03-01 16:25:45,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:45,810 INFO L276 IsEmpty]: Start isEmpty. Operand 11021 states and 33434 transitions. [2022-03-01 16:25:45,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:25:45,825 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:45,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:45,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-03-01 16:25:46,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:25:46,026 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:46,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:46,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1525183769, now seen corresponding path program 88 times [2022-03-01 16:25:46,026 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:46,026 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918605584] [2022-03-01 16:25:46,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:46,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:46,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:46,131 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:46,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918605584] [2022-03-01 16:25:46,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918605584] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:25:46,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118724187] [2022-03-01 16:25:46,131 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:25:46,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:25:46,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:25:46,132 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:25:46,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-03-01 16:25:46,220 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:25:46,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:25:46,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-01 16:25:46,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:25:46,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:46,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:25:46,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:46,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118724187] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:25:46,878 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:25:46,879 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:25:46,879 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590908654] [2022-03-01 16:25:46,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:25:46,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:25:46,879 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:46,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:25:46,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:25:46,879 INFO L87 Difference]: Start difference. First operand 11021 states and 33434 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:47,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:47,777 INFO L93 Difference]: Finished difference Result 12477 states and 37314 transitions. [2022-03-01 16:25:47,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:25:47,777 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:25:47,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:47,800 INFO L225 Difference]: With dead ends: 12477 [2022-03-01 16:25:47,801 INFO L226 Difference]: Without dead ends: 12281 [2022-03-01 16:25:47,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=406, Invalid=3254, Unknown=0, NotChecked=0, Total=3660 [2022-03-01 16:25:47,801 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 529 mSDsluCounter, 2234 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:47,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 2264 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 16:25:47,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12281 states. [2022-03-01 16:25:47,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12281 to 11017. [2022-03-01 16:25:47,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11017 states, 11016 states have (on average 3.034041394335512) internal successors, (33423), 11016 states have internal predecessors, (33423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:47,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11017 states to 11017 states and 33423 transitions. [2022-03-01 16:25:47,993 INFO L78 Accepts]: Start accepts. Automaton has 11017 states and 33423 transitions. Word has length 70 [2022-03-01 16:25:47,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:47,994 INFO L470 AbstractCegarLoop]: Abstraction has 11017 states and 33423 transitions. [2022-03-01 16:25:47,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:47,994 INFO L276 IsEmpty]: Start isEmpty. Operand 11017 states and 33423 transitions. [2022-03-01 16:25:48,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:25:48,008 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:48,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:48,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-03-01 16:25:48,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:25:48,209 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:48,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:48,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1281105169, now seen corresponding path program 89 times [2022-03-01 16:25:48,209 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:48,209 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812259361] [2022-03-01 16:25:48,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:48,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:48,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:48,317 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:48,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812259361] [2022-03-01 16:25:48,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812259361] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:25:48,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278441920] [2022-03-01 16:25:48,318 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:25:48,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:25:48,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:25:48,319 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:25:48,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-03-01 16:25:48,407 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:25:48,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:25:48,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:25:48,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:25:48,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:48,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:25:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:49,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278441920] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:25:49,105 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:25:49,105 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:25:49,105 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628247368] [2022-03-01 16:25:49,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:25:49,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:25:49,105 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:49,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:25:49,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:25:49,105 INFO L87 Difference]: Start difference. First operand 11017 states and 33423 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:50,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:50,698 INFO L93 Difference]: Finished difference Result 17317 states and 52070 transitions. [2022-03-01 16:25:50,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-01 16:25:50,698 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:25:50,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:50,730 INFO L225 Difference]: With dead ends: 17317 [2022-03-01 16:25:50,731 INFO L226 Difference]: Without dead ends: 17131 [2022-03-01 16:25:50,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2053 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=827, Invalid=5653, Unknown=0, NotChecked=0, Total=6480 [2022-03-01 16:25:50,732 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 460 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:50,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 2436 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:25:50,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17131 states. [2022-03-01 16:25:50,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17131 to 11697. [2022-03-01 16:25:50,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11697 states, 11696 states have (on average 3.031207250341997) internal successors, (35453), 11696 states have internal predecessors, (35453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:50,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11697 states to 11697 states and 35453 transitions. [2022-03-01 16:25:50,971 INFO L78 Accepts]: Start accepts. Automaton has 11697 states and 35453 transitions. Word has length 70 [2022-03-01 16:25:50,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:50,971 INFO L470 AbstractCegarLoop]: Abstraction has 11697 states and 35453 transitions. [2022-03-01 16:25:50,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:50,971 INFO L276 IsEmpty]: Start isEmpty. Operand 11697 states and 35453 transitions. [2022-03-01 16:25:50,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:25:50,987 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:50,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:51,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-03-01 16:25:51,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable121 [2022-03-01 16:25:51,188 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:51,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:51,188 INFO L85 PathProgramCache]: Analyzing trace with hash -360508537, now seen corresponding path program 90 times [2022-03-01 16:25:51,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:51,188 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962733734] [2022-03-01 16:25:51,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:51,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:51,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:51,299 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:51,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962733734] [2022-03-01 16:25:51,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962733734] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:25:51,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946348635] [2022-03-01 16:25:51,299 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:25:51,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:25:51,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:25:51,300 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:25:51,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-03-01 16:25:51,391 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 16:25:51,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:25:51,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:25:51,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:25:51,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:51,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:25:52,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:52,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946348635] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:25:52,105 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:25:52,106 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-03-01 16:25:52,106 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478933738] [2022-03-01 16:25:52,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:25:52,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-01 16:25:52,106 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:52,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-01 16:25:52,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1055, Unknown=0, NotChecked=0, Total=1190 [2022-03-01 16:25:52,106 INFO L87 Difference]: Start difference. First operand 11697 states and 35453 transitions. Second operand has 35 states, 35 states have (on average 2.942857142857143) internal successors, (103), 35 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:54,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:54,510 INFO L93 Difference]: Finished difference Result 15500 states and 46196 transitions. [2022-03-01 16:25:54,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-01 16:25:54,511 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.942857142857143) internal successors, (103), 35 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:25:54,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:54,540 INFO L225 Difference]: With dead ends: 15500 [2022-03-01 16:25:54,540 INFO L226 Difference]: Without dead ends: 15425 [2022-03-01 16:25:54,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2712 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1270, Invalid=7850, Unknown=0, NotChecked=0, Total=9120 [2022-03-01 16:25:54,541 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 514 mSDsluCounter, 3072 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:54,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [514 Valid, 3155 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1681 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:25:54,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15425 states. [2022-03-01 16:25:54,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15425 to 12397. [2022-03-01 16:25:54,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12397 states, 12396 states have (on average 3.0450145208131656) internal successors, (37746), 12396 states have internal predecessors, (37746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:54,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12397 states to 12397 states and 37746 transitions. [2022-03-01 16:25:54,797 INFO L78 Accepts]: Start accepts. Automaton has 12397 states and 37746 transitions. Word has length 70 [2022-03-01 16:25:54,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:54,797 INFO L470 AbstractCegarLoop]: Abstraction has 12397 states and 37746 transitions. [2022-03-01 16:25:54,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.942857142857143) internal successors, (103), 35 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:54,798 INFO L276 IsEmpty]: Start isEmpty. Operand 12397 states and 37746 transitions. [2022-03-01 16:25:54,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:25:54,817 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:54,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:54,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-03-01 16:25:55,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-03-01 16:25:55,034 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:55,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:55,035 INFO L85 PathProgramCache]: Analyzing trace with hash -398905281, now seen corresponding path program 91 times [2022-03-01 16:25:55,035 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:55,035 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3679556] [2022-03-01 16:25:55,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:55,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:55,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:55,148 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:55,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3679556] [2022-03-01 16:25:55,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3679556] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:25:55,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898679145] [2022-03-01 16:25:55,149 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:25:55,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:25:55,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:25:55,150 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:25:55,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-03-01 16:25:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:55,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:25:55,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:25:55,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:55,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:25:55,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:55,901 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898679145] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:25:55,901 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:25:55,901 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:25:55,901 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228279614] [2022-03-01 16:25:55,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:25:55,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:25:55,901 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:55,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:25:55,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:25:55,902 INFO L87 Difference]: Start difference. First operand 12397 states and 37746 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:57,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:25:57,520 INFO L93 Difference]: Finished difference Result 18209 states and 54741 transitions. [2022-03-01 16:25:57,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-01 16:25:57,521 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:25:57,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:25:57,559 INFO L225 Difference]: With dead ends: 18209 [2022-03-01 16:25:57,559 INFO L226 Difference]: Without dead ends: 18069 [2022-03-01 16:25:57,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1844 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=867, Invalid=5139, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 16:25:57,560 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 475 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 2408 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:25:57,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 2408 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:25:57,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18069 states. [2022-03-01 16:25:57,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18069 to 12569. [2022-03-01 16:25:57,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12569 states, 12568 states have (on average 3.044796308084023) internal successors, (38267), 12568 states have internal predecessors, (38267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:57,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12569 states to 12569 states and 38267 transitions. [2022-03-01 16:25:57,824 INFO L78 Accepts]: Start accepts. Automaton has 12569 states and 38267 transitions. Word has length 70 [2022-03-01 16:25:57,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:25:57,824 INFO L470 AbstractCegarLoop]: Abstraction has 12569 states and 38267 transitions. [2022-03-01 16:25:57,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:25:57,824 INFO L276 IsEmpty]: Start isEmpty. Operand 12569 states and 38267 transitions. [2022-03-01 16:25:57,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:25:57,843 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:25:57,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:25:57,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-03-01 16:25:58,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-03-01 16:25:58,044 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:25:58,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:25:58,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1458757001, now seen corresponding path program 92 times [2022-03-01 16:25:58,045 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:25:58,045 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689849717] [2022-03-01 16:25:58,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:25:58,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:25:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:25:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:58,153 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:25:58,153 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689849717] [2022-03-01 16:25:58,153 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689849717] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:25:58,153 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761707668] [2022-03-01 16:25:58,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:25:58,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:25:58,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:25:58,155 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:25:58,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-03-01 16:25:58,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:25:58,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:25:58,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:25:58,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:25:58,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:58,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:25:59,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:25:59,003 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761707668] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:25:59,003 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:25:59,003 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:25:59,003 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453917870] [2022-03-01 16:25:59,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:25:59,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:25:59,003 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:25:59,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:25:59,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:25:59,004 INFO L87 Difference]: Start difference. First operand 12569 states and 38267 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:01,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:01,827 INFO L93 Difference]: Finished difference Result 19261 states and 57956 transitions. [2022-03-01 16:26:01,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-03-01 16:26:01,827 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:26:01,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:01,857 INFO L225 Difference]: With dead ends: 19261 [2022-03-01 16:26:01,858 INFO L226 Difference]: Without dead ends: 19135 [2022-03-01 16:26:01,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4541 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1898, Invalid=10984, Unknown=0, NotChecked=0, Total=12882 [2022-03-01 16:26:01,858 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 639 mSDsluCounter, 2105 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:01,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 2158 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:26:01,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19135 states. [2022-03-01 16:26:02,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19135 to 12745. [2022-03-01 16:26:02,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12745 states, 12744 states have (on average 3.045433145009416) internal successors, (38811), 12744 states have internal predecessors, (38811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:02,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12745 states to 12745 states and 38811 transitions. [2022-03-01 16:26:02,074 INFO L78 Accepts]: Start accepts. Automaton has 12745 states and 38811 transitions. Word has length 70 [2022-03-01 16:26:02,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:02,075 INFO L470 AbstractCegarLoop]: Abstraction has 12745 states and 38811 transitions. [2022-03-01 16:26:02,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:02,075 INFO L276 IsEmpty]: Start isEmpty. Operand 12745 states and 38811 transitions. [2022-03-01 16:26:02,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:26:02,094 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:02,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:02,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-03-01 16:26:02,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:26:02,294 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:02,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:02,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1497153745, now seen corresponding path program 93 times [2022-03-01 16:26:02,295 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:02,295 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54112254] [2022-03-01 16:26:02,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:02,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:02,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:02,408 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:02,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54112254] [2022-03-01 16:26:02,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54112254] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:26:02,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687616853] [2022-03-01 16:26:02,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:26:02,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:26:02,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:26:02,409 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:26:02,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-03-01 16:26:02,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 16:26:02,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:26:02,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:26:02,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:26:02,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:02,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:26:03,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:03,183 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687616853] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:26:03,183 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:26:03,183 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:26:03,183 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622565064] [2022-03-01 16:26:03,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:26:03,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:26:03,184 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:03,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:26:03,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:26:03,184 INFO L87 Difference]: Start difference. First operand 12745 states and 38811 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:05,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:05,984 INFO L93 Difference]: Finished difference Result 19613 states and 58886 transitions. [2022-03-01 16:26:05,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-03-01 16:26:05,984 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:26:05,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:06,022 INFO L225 Difference]: With dead ends: 19613 [2022-03-01 16:26:06,022 INFO L226 Difference]: Without dead ends: 19473 [2022-03-01 16:26:06,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4382 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1988, Invalid=10668, Unknown=0, NotChecked=0, Total=12656 [2022-03-01 16:26:06,024 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 586 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:06,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 2694 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:26:06,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19473 states. [2022-03-01 16:26:06,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19473 to 12769. [2022-03-01 16:26:06,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12769 states, 12768 states have (on average 3.045817669172932) internal successors, (38889), 12768 states have internal predecessors, (38889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:06,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12769 states to 12769 states and 38889 transitions. [2022-03-01 16:26:06,318 INFO L78 Accepts]: Start accepts. Automaton has 12769 states and 38889 transitions. Word has length 70 [2022-03-01 16:26:06,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:06,318 INFO L470 AbstractCegarLoop]: Abstraction has 12769 states and 38889 transitions. [2022-03-01 16:26:06,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:06,319 INFO L276 IsEmpty]: Start isEmpty. Operand 12769 states and 38889 transitions. [2022-03-01 16:26:06,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:26:06,338 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:06,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:06,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-03-01 16:26:06,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-03-01 16:26:06,538 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:06,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:06,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1832125171, now seen corresponding path program 94 times [2022-03-01 16:26:06,539 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:06,539 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983694384] [2022-03-01 16:26:06,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:06,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:06,648 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:06,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983694384] [2022-03-01 16:26:06,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983694384] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:26:06,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173297752] [2022-03-01 16:26:06,649 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:26:06,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:26:06,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:26:06,650 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:26:06,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-03-01 16:26:06,755 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:26:06,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:26:06,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-01 16:26:06,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:26:07,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:07,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:26:07,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:07,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173297752] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:26:07,319 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:26:07,319 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:26:07,319 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652682048] [2022-03-01 16:26:07,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:26:07,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:26:07,319 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:07,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:26:07,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:26:07,320 INFO L87 Difference]: Start difference. First operand 12769 states and 38889 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:09,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:09,163 INFO L93 Difference]: Finished difference Result 17008 states and 51265 transitions. [2022-03-01 16:26:09,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-01 16:26:09,163 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:26:09,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:09,208 INFO L225 Difference]: With dead ends: 17008 [2022-03-01 16:26:09,208 INFO L226 Difference]: Without dead ends: 16868 [2022-03-01 16:26:09,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2880 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1488, Invalid=7824, Unknown=0, NotChecked=0, Total=9312 [2022-03-01 16:26:09,209 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 496 mSDsluCounter, 2804 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 2863 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:09,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 2863 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:26:09,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16868 states. [2022-03-01 16:26:09,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16868 to 13465. [2022-03-01 16:26:09,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13465 states, 13464 states have (on average 3.05102495543672) internal successors, (41079), 13464 states have internal predecessors, (41079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:09,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13465 states to 13465 states and 41079 transitions. [2022-03-01 16:26:09,521 INFO L78 Accepts]: Start accepts. Automaton has 13465 states and 41079 transitions. Word has length 70 [2022-03-01 16:26:09,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:09,522 INFO L470 AbstractCegarLoop]: Abstraction has 13465 states and 41079 transitions. [2022-03-01 16:26:09,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:09,522 INFO L276 IsEmpty]: Start isEmpty. Operand 13465 states and 41079 transitions. [2022-03-01 16:26:09,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:26:09,544 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:09,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:09,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-03-01 16:26:09,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2022-03-01 16:26:09,746 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:09,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:09,746 INFO L85 PathProgramCache]: Analyzing trace with hash -480808329, now seen corresponding path program 95 times [2022-03-01 16:26:09,746 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:09,746 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421672890] [2022-03-01 16:26:09,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:09,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:09,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:09,856 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:09,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421672890] [2022-03-01 16:26:09,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421672890] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:26:09,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999905636] [2022-03-01 16:26:09,856 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:26:09,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:26:09,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:26:09,857 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:26:09,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-03-01 16:26:09,951 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 16:26:09,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:26:09,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:26:09,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:26:10,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:10,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:26:10,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:10,587 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999905636] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:26:10,587 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:26:10,587 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:26:10,587 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187115949] [2022-03-01 16:26:10,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:26:10,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:26:10,588 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:10,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:26:10,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=916, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:26:10,588 INFO L87 Difference]: Start difference. First operand 13465 states and 41079 transitions. Second operand has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:11,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:11,581 INFO L93 Difference]: Finished difference Result 16291 states and 49496 transitions. [2022-03-01 16:26:11,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-01 16:26:11,581 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:26:11,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:11,611 INFO L225 Difference]: With dead ends: 16291 [2022-03-01 16:26:11,611 INFO L226 Difference]: Without dead ends: 16187 [2022-03-01 16:26:11,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1299 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=979, Invalid=3991, Unknown=0, NotChecked=0, Total=4970 [2022-03-01 16:26:11,612 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 491 mSDsluCounter, 2157 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:11,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 2226 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:26:11,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16187 states. [2022-03-01 16:26:11,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16187 to 11569. [2022-03-01 16:26:11,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11569 states, 11568 states have (on average 3.0426175656984786) internal successors, (35197), 11568 states have internal predecessors, (35197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:11,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11569 states to 11569 states and 35197 transitions. [2022-03-01 16:26:11,818 INFO L78 Accepts]: Start accepts. Automaton has 11569 states and 35197 transitions. Word has length 70 [2022-03-01 16:26:11,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:11,818 INFO L470 AbstractCegarLoop]: Abstraction has 11569 states and 35197 transitions. [2022-03-01 16:26:11,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:11,818 INFO L276 IsEmpty]: Start isEmpty. Operand 11569 states and 35197 transitions. [2022-03-01 16:26:11,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:26:11,833 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:11,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:11,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-03-01 16:26:12,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2022-03-01 16:26:12,035 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:12,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:12,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1145842415, now seen corresponding path program 96 times [2022-03-01 16:26:12,036 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:12,036 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951633233] [2022-03-01 16:26:12,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:12,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:12,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:12,147 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:12,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951633233] [2022-03-01 16:26:12,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951633233] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:26:12,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479841559] [2022-03-01 16:26:12,148 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:26:12,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:26:12,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:26:12,149 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:26:12,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-03-01 16:26:12,241 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 16:26:12,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:26:12,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:26:12,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:26:12,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:12,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:26:12,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:12,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479841559] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:26:12,939 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:26:12,939 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:26:12,939 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421106053] [2022-03-01 16:26:12,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:26:12,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:26:12,940 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:12,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:26:12,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:26:12,940 INFO L87 Difference]: Start difference. First operand 11569 states and 35197 transitions. Second operand has 34 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 34 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:15,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:15,136 INFO L93 Difference]: Finished difference Result 17131 states and 51397 transitions. [2022-03-01 16:26:15,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-01 16:26:15,136 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 34 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:26:15,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:15,173 INFO L225 Difference]: With dead ends: 17131 [2022-03-01 16:26:15,173 INFO L226 Difference]: Without dead ends: 17005 [2022-03-01 16:26:15,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3029 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1312, Invalid=7808, Unknown=0, NotChecked=0, Total=9120 [2022-03-01 16:26:15,174 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 604 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:15,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 1933 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:26:15,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17005 states. [2022-03-01 16:26:15,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17005 to 11629. [2022-03-01 16:26:15,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11629 states, 11628 states have (on average 3.042139662882697) internal successors, (35374), 11628 states have internal predecessors, (35374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:15,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11629 states to 11629 states and 35374 transitions. [2022-03-01 16:26:15,502 INFO L78 Accepts]: Start accepts. Automaton has 11629 states and 35374 transitions. Word has length 70 [2022-03-01 16:26:15,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:15,502 INFO L470 AbstractCegarLoop]: Abstraction has 11629 states and 35374 transitions. [2022-03-01 16:26:15,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 34 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:15,502 INFO L276 IsEmpty]: Start isEmpty. Operand 11629 states and 35374 transitions. [2022-03-01 16:26:15,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:26:15,518 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:15,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:15,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2022-03-01 16:26:15,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2022-03-01 16:26:15,719 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:15,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:15,720 INFO L85 PathProgramCache]: Analyzing trace with hash -566247181, now seen corresponding path program 97 times [2022-03-01 16:26:15,720 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:15,720 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246691856] [2022-03-01 16:26:15,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:15,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:15,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:15,837 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:15,837 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246691856] [2022-03-01 16:26:15,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246691856] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:26:15,837 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091850381] [2022-03-01 16:26:15,837 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:26:15,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:26:15,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:26:15,838 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:26:15,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-03-01 16:26:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:15,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:26:15,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:26:16,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:16,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:26:16,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:16,606 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091850381] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:26:16,606 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:26:16,606 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:26:16,606 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861733660] [2022-03-01 16:26:16,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:26:16,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:26:16,606 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:16,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:26:16,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=976, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:26:16,607 INFO L87 Difference]: Start difference. First operand 11629 states and 35374 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:18,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:18,095 INFO L93 Difference]: Finished difference Result 16449 states and 49459 transitions. [2022-03-01 16:26:18,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-01 16:26:18,095 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:26:18,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:18,129 INFO L225 Difference]: With dead ends: 16449 [2022-03-01 16:26:18,129 INFO L226 Difference]: Without dead ends: 16315 [2022-03-01 16:26:18,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1841 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=864, Invalid=5142, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 16:26:18,130 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 458 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:18,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [458 Valid, 2049 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:26:18,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16315 states. [2022-03-01 16:26:18,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16315 to 11629. [2022-03-01 16:26:18,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11629 states, 11628 states have (on average 3.042483660130719) internal successors, (35378), 11628 states have internal predecessors, (35378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:18,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11629 states to 11629 states and 35378 transitions. [2022-03-01 16:26:18,409 INFO L78 Accepts]: Start accepts. Automaton has 11629 states and 35378 transitions. Word has length 70 [2022-03-01 16:26:18,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:18,409 INFO L470 AbstractCegarLoop]: Abstraction has 11629 states and 35378 transitions. [2022-03-01 16:26:18,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:18,409 INFO L276 IsEmpty]: Start isEmpty. Operand 11629 states and 35378 transitions. [2022-03-01 16:26:18,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:26:18,426 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:18,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:18,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-03-01 16:26:18,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:26:18,626 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:18,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:18,627 INFO L85 PathProgramCache]: Analyzing trace with hash 45657325, now seen corresponding path program 98 times [2022-03-01 16:26:18,627 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:18,627 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381917477] [2022-03-01 16:26:18,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:18,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:18,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:18,742 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:18,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381917477] [2022-03-01 16:26:18,742 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381917477] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:26:18,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201654889] [2022-03-01 16:26:18,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:26:18,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:26:18,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:26:18,743 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:26:18,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-03-01 16:26:18,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:26:18,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:26:18,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:26:18,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:26:19,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:19,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:26:19,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:19,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201654889] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:26:19,537 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:26:19,537 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:26:19,537 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165396390] [2022-03-01 16:26:19,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:26:19,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:26:19,538 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:19,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:26:19,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:26:19,538 INFO L87 Difference]: Start difference. First operand 11629 states and 35378 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:21,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:21,649 INFO L93 Difference]: Finished difference Result 17464 states and 52615 transitions. [2022-03-01 16:26:21,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-01 16:26:21,649 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:26:21,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:21,681 INFO L225 Difference]: With dead ends: 17464 [2022-03-01 16:26:21,681 INFO L226 Difference]: Without dead ends: 17338 [2022-03-01 16:26:21,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2726 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1223, Invalid=7707, Unknown=0, NotChecked=0, Total=8930 [2022-03-01 16:26:21,682 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 415 mSDsluCounter, 3019 mSDsCounter, 0 mSdLazyCounter, 1561 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 3045 SdHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:21,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 3045 Invalid, 1636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1561 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:26:21,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17338 states. [2022-03-01 16:26:21,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17338 to 11665. [2022-03-01 16:26:21,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11665 states, 11664 states have (on average 3.042266803840878) internal successors, (35485), 11664 states have internal predecessors, (35485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:21,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11665 states to 11665 states and 35485 transitions. [2022-03-01 16:26:21,903 INFO L78 Accepts]: Start accepts. Automaton has 11665 states and 35485 transitions. Word has length 70 [2022-03-01 16:26:21,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:21,903 INFO L470 AbstractCegarLoop]: Abstraction has 11665 states and 35485 transitions. [2022-03-01 16:26:21,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:21,903 INFO L276 IsEmpty]: Start isEmpty. Operand 11665 states and 35485 transitions. [2022-03-01 16:26:21,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:26:21,919 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:21,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:21,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-03-01 16:26:22,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:26:22,120 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:22,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:22,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1539313369, now seen corresponding path program 99 times [2022-03-01 16:26:22,120 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:22,120 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753198904] [2022-03-01 16:26:22,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:22,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:22,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:22,233 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:22,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753198904] [2022-03-01 16:26:22,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753198904] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:26:22,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87428373] [2022-03-01 16:26:22,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:26:22,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:26:22,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:26:22,234 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:26:22,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-03-01 16:26:22,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 16:26:22,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:26:22,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:26:22,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:26:22,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:22,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:26:23,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:23,002 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87428373] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:26:23,002 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:26:23,003 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:26:23,003 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093571114] [2022-03-01 16:26:23,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:26:23,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:26:23,003 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:23,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:26:23,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:26:23,003 INFO L87 Difference]: Start difference. First operand 11665 states and 35485 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:24,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:24,904 INFO L93 Difference]: Finished difference Result 17251 states and 52120 transitions. [2022-03-01 16:26:24,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-01 16:26:24,904 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:26:24,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:24,938 INFO L225 Difference]: With dead ends: 17251 [2022-03-01 16:26:24,938 INFO L226 Difference]: Without dead ends: 17095 [2022-03-01 16:26:24,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2571 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1214, Invalid=7342, Unknown=0, NotChecked=0, Total=8556 [2022-03-01 16:26:24,940 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 462 mSDsluCounter, 2171 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 2231 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:24,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 2231 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:26:24,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17095 states. [2022-03-01 16:26:25,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17095 to 11649. [2022-03-01 16:26:25,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11649 states, 11648 states have (on average 3.0423248626373627) internal successors, (35437), 11648 states have internal predecessors, (35437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:25,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11649 states to 11649 states and 35437 transitions. [2022-03-01 16:26:25,171 INFO L78 Accepts]: Start accepts. Automaton has 11649 states and 35437 transitions. Word has length 70 [2022-03-01 16:26:25,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:25,171 INFO L470 AbstractCegarLoop]: Abstraction has 11649 states and 35437 transitions. [2022-03-01 16:26:25,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:25,171 INFO L276 IsEmpty]: Start isEmpty. Operand 11649 states and 35437 transitions. [2022-03-01 16:26:25,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:26:25,187 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:25,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:25,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2022-03-01 16:26:25,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:26:25,388 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:25,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:25,388 INFO L85 PathProgramCache]: Analyzing trace with hash 90004025, now seen corresponding path program 100 times [2022-03-01 16:26:25,388 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:25,388 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177929696] [2022-03-01 16:26:25,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:25,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:25,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:25,497 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:25,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177929696] [2022-03-01 16:26:25,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177929696] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:26:25,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459964337] [2022-03-01 16:26:25,497 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:26:25,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:26:25,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:26:25,498 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:26:25,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-03-01 16:26:25,593 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:26:25,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:26:25,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-01 16:26:25,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:26:25,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:25,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:26:26,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:26,196 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459964337] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:26:26,196 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:26:26,196 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2022-03-01 16:26:26,196 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429451661] [2022-03-01 16:26:26,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:26:26,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 16:26:26,196 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:26,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 16:26:26,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2022-03-01 16:26:26,197 INFO L87 Difference]: Start difference. First operand 11649 states and 35437 transitions. Second operand has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:27,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:27,045 INFO L93 Difference]: Finished difference Result 13738 states and 41509 transitions. [2022-03-01 16:26:27,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-01 16:26:27,045 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:26:27,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:27,073 INFO L225 Difference]: With dead ends: 13738 [2022-03-01 16:26:27,073 INFO L226 Difference]: Without dead ends: 13574 [2022-03-01 16:26:27,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=581, Invalid=3579, Unknown=0, NotChecked=0, Total=4160 [2022-03-01 16:26:27,074 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 343 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2057 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:27,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2057 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 16:26:27,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13574 states. [2022-03-01 16:26:27,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13574 to 11701. [2022-03-01 16:26:27,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11701 states, 11700 states have (on average 3.0413675213675213) internal successors, (35584), 11700 states have internal predecessors, (35584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:27,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11701 states to 11701 states and 35584 transitions. [2022-03-01 16:26:27,272 INFO L78 Accepts]: Start accepts. Automaton has 11701 states and 35584 transitions. Word has length 70 [2022-03-01 16:26:27,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:27,272 INFO L470 AbstractCegarLoop]: Abstraction has 11701 states and 35584 transitions. [2022-03-01 16:26:27,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:27,272 INFO L276 IsEmpty]: Start isEmpty. Operand 11701 states and 35584 transitions. [2022-03-01 16:26:27,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:26:27,288 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:27,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:27,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-03-01 16:26:27,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:26:27,491 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:27,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:27,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1052816633, now seen corresponding path program 101 times [2022-03-01 16:26:27,492 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:27,492 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371714562] [2022-03-01 16:26:27,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:27,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:27,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:27,616 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:27,616 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371714562] [2022-03-01 16:26:27,616 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371714562] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:26:27,616 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072764710] [2022-03-01 16:26:27,616 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:26:27,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:26:27,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:26:27,618 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:26:27,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-03-01 16:26:27,712 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 16:26:27,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:26:27,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:26:27,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:26:27,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:27,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:26:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:28,327 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072764710] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:26:28,327 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:26:28,327 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:26:28,327 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709845129] [2022-03-01 16:26:28,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:26:28,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:26:28,328 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:28,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:26:28,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:26:28,328 INFO L87 Difference]: Start difference. First operand 11701 states and 35584 transitions. Second operand has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:29,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:29,912 INFO L93 Difference]: Finished difference Result 16211 states and 49160 transitions. [2022-03-01 16:26:29,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-01 16:26:29,912 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:26:29,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:29,943 INFO L225 Difference]: With dead ends: 16211 [2022-03-01 16:26:29,944 INFO L226 Difference]: Without dead ends: 16125 [2022-03-01 16:26:29,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2396 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1475, Invalid=6715, Unknown=0, NotChecked=0, Total=8190 [2022-03-01 16:26:29,945 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 402 mSDsluCounter, 2976 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:29,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 3019 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1434 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:26:29,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16125 states. [2022-03-01 16:26:30,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16125 to 12377. [2022-03-01 16:26:30,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12377 states, 12376 states have (on average 3.055187459599224) internal successors, (37811), 12376 states have internal predecessors, (37811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:30,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12377 states to 12377 states and 37811 transitions. [2022-03-01 16:26:30,176 INFO L78 Accepts]: Start accepts. Automaton has 12377 states and 37811 transitions. Word has length 70 [2022-03-01 16:26:30,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:30,176 INFO L470 AbstractCegarLoop]: Abstraction has 12377 states and 37811 transitions. [2022-03-01 16:26:30,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:30,176 INFO L276 IsEmpty]: Start isEmpty. Operand 12377 states and 37811 transitions. [2022-03-01 16:26:30,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:26:30,194 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:30,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:30,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2022-03-01 16:26:30,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2022-03-01 16:26:30,395 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:30,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:30,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1065260363, now seen corresponding path program 102 times [2022-03-01 16:26:30,395 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:30,395 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063132836] [2022-03-01 16:26:30,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:30,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:30,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:30,505 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:30,505 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063132836] [2022-03-01 16:26:30,506 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063132836] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:26:30,506 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66029641] [2022-03-01 16:26:30,506 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:26:30,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:26:30,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:26:30,507 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:26:30,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-03-01 16:26:30,602 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 16:26:30,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:26:30,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:26:30,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:26:30,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:30,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:26:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:31,303 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66029641] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:26:31,303 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:26:31,303 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:26:31,303 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783662659] [2022-03-01 16:26:31,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:26:31,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:26:31,308 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:31,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:26:31,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=972, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:26:31,309 INFO L87 Difference]: Start difference. First operand 12377 states and 37811 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:33,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:33,959 INFO L93 Difference]: Finished difference Result 21245 states and 64502 transitions. [2022-03-01 16:26:33,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-03-01 16:26:33,960 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:26:33,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:33,999 INFO L225 Difference]: With dead ends: 21245 [2022-03-01 16:26:33,999 INFO L226 Difference]: Without dead ends: 21105 [2022-03-01 16:26:34,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4045 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1827, Invalid=9945, Unknown=0, NotChecked=0, Total=11772 [2022-03-01 16:26:34,001 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 599 mSDsluCounter, 2649 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:34,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [599 Valid, 2702 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:26:34,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21105 states. [2022-03-01 16:26:34,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21105 to 12685. [2022-03-01 16:26:34,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12685 states, 12684 states have (on average 3.054714601072217) internal successors, (38746), 12684 states have internal predecessors, (38746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:34,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12685 states to 12685 states and 38746 transitions. [2022-03-01 16:26:34,278 INFO L78 Accepts]: Start accepts. Automaton has 12685 states and 38746 transitions. Word has length 70 [2022-03-01 16:26:34,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:34,278 INFO L470 AbstractCegarLoop]: Abstraction has 12685 states and 38746 transitions. [2022-03-01 16:26:34,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:34,278 INFO L276 IsEmpty]: Start isEmpty. Operand 12685 states and 38746 transitions. [2022-03-01 16:26:34,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:26:34,296 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:34,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:34,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2022-03-01 16:26:34,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-03-01 16:26:34,503 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:34,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:34,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1448736071, now seen corresponding path program 103 times [2022-03-01 16:26:34,504 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:34,504 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691958538] [2022-03-01 16:26:34,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:34,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:34,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:34,621 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:34,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691958538] [2022-03-01 16:26:34,621 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691958538] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:26:34,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170232652] [2022-03-01 16:26:34,621 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:26:34,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:26:34,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:26:34,622 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:26:34,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-03-01 16:26:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:34,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:26:34,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:26:35,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:35,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:26:35,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:35,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170232652] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:26:35,413 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:26:35,414 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:26:35,414 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398932915] [2022-03-01 16:26:35,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:26:35,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:26:35,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:35,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:26:35,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=994, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:26:35,414 INFO L87 Difference]: Start difference. First operand 12685 states and 38746 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:37,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:37,576 INFO L93 Difference]: Finished difference Result 18355 states and 55702 transitions. [2022-03-01 16:26:37,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-01 16:26:37,576 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:26:37,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:37,612 INFO L225 Difference]: With dead ends: 18355 [2022-03-01 16:26:37,612 INFO L226 Difference]: Without dead ends: 18193 [2022-03-01 16:26:37,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2962 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1311, Invalid=8391, Unknown=0, NotChecked=0, Total=9702 [2022-03-01 16:26:37,613 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 374 mSDsluCounter, 3162 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 3203 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:37,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 3203 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1573 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:26:37,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18193 states. [2022-03-01 16:26:37,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18193 to 12725. [2022-03-01 16:26:37,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12725 states, 12724 states have (on average 3.054699779943414) internal successors, (38868), 12724 states have internal predecessors, (38868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:37,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12725 states to 12725 states and 38868 transitions. [2022-03-01 16:26:37,857 INFO L78 Accepts]: Start accepts. Automaton has 12725 states and 38868 transitions. Word has length 70 [2022-03-01 16:26:37,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:37,858 INFO L470 AbstractCegarLoop]: Abstraction has 12725 states and 38868 transitions. [2022-03-01 16:26:37,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:37,858 INFO L276 IsEmpty]: Start isEmpty. Operand 12725 states and 38868 transitions. [2022-03-01 16:26:37,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:26:37,877 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:37,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:37,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-03-01 16:26:38,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2022-03-01 16:26:38,078 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:38,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:38,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1493082771, now seen corresponding path program 104 times [2022-03-01 16:26:38,078 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:38,078 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557776329] [2022-03-01 16:26:38,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:38,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:38,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:38,227 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:38,227 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557776329] [2022-03-01 16:26:38,227 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557776329] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:26:38,227 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266814539] [2022-03-01 16:26:38,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:26:38,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:26:38,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:26:38,228 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:26:38,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-03-01 16:26:38,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:26:38,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:26:38,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:26:38,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:26:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:38,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:26:39,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:39,056 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266814539] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:26:39,056 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:26:39,056 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:26:39,056 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804558610] [2022-03-01 16:26:39,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:26:39,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:26:39,056 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:39,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:26:39,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:26:39,057 INFO L87 Difference]: Start difference. First operand 12725 states and 38868 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:41,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:41,001 INFO L93 Difference]: Finished difference Result 18145 states and 55212 transitions. [2022-03-01 16:26:41,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-01 16:26:41,001 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:26:41,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:41,039 INFO L225 Difference]: With dead ends: 18145 [2022-03-01 16:26:41,039 INFO L226 Difference]: Without dead ends: 17966 [2022-03-01 16:26:41,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2450 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1205, Invalid=7167, Unknown=0, NotChecked=0, Total=8372 [2022-03-01 16:26:41,040 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 417 mSDsluCounter, 2738 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 2774 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:41,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 2774 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:26:41,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17966 states. [2022-03-01 16:26:41,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17966 to 12709. [2022-03-01 16:26:41,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12709 states, 12708 states have (on average 3.054453887315077) internal successors, (38816), 12708 states have internal predecessors, (38816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:41,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12709 states to 12709 states and 38816 transitions. [2022-03-01 16:26:41,345 INFO L78 Accepts]: Start accepts. Automaton has 12709 states and 38816 transitions. Word has length 70 [2022-03-01 16:26:41,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:41,345 INFO L470 AbstractCegarLoop]: Abstraction has 12709 states and 38816 transitions. [2022-03-01 16:26:41,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:41,345 INFO L276 IsEmpty]: Start isEmpty. Operand 12709 states and 38816 transitions. [2022-03-01 16:26:41,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:26:41,365 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:41,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:41,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-03-01 16:26:41,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-03-01 16:26:41,567 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:41,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:41,567 INFO L85 PathProgramCache]: Analyzing trace with hash 350262113, now seen corresponding path program 105 times [2022-03-01 16:26:41,567 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:41,567 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105263293] [2022-03-01 16:26:41,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:41,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:41,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:41,682 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:41,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105263293] [2022-03-01 16:26:41,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105263293] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:26:41,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000653455] [2022-03-01 16:26:41,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:26:41,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:26:41,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:26:41,683 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:26:41,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-03-01 16:26:41,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 16:26:41,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:26:41,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:26:41,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:26:42,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:42,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:26:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:42,456 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000653455] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:26:42,456 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:26:42,456 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:26:42,456 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812393056] [2022-03-01 16:26:42,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:26:42,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:26:42,456 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:42,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:26:42,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:26:42,457 INFO L87 Difference]: Start difference. First operand 12709 states and 38816 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:45,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:45,836 INFO L93 Difference]: Finished difference Result 19869 states and 60294 transitions. [2022-03-01 16:26:45,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-03-01 16:26:45,837 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:26:45,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:45,873 INFO L225 Difference]: With dead ends: 19869 [2022-03-01 16:26:45,873 INFO L226 Difference]: Without dead ends: 19713 [2022-03-01 16:26:45,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6585 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3046, Invalid=15044, Unknown=0, NotChecked=0, Total=18090 [2022-03-01 16:26:45,875 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 690 mSDsluCounter, 2231 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 2308 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:45,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 2308 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:26:45,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19713 states. [2022-03-01 16:26:46,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19713 to 12725. [2022-03-01 16:26:46,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12725 states, 12724 states have (on average 3.054699779943414) internal successors, (38868), 12724 states have internal predecessors, (38868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:46,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12725 states to 12725 states and 38868 transitions. [2022-03-01 16:26:46,258 INFO L78 Accepts]: Start accepts. Automaton has 12725 states and 38868 transitions. Word has length 70 [2022-03-01 16:26:46,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:46,258 INFO L470 AbstractCegarLoop]: Abstraction has 12725 states and 38868 transitions. [2022-03-01 16:26:46,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:46,258 INFO L276 IsEmpty]: Start isEmpty. Operand 12725 states and 38868 transitions. [2022-03-01 16:26:46,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:26:46,284 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:46,284 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:46,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2022-03-01 16:26:46,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2022-03-01 16:26:46,484 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:46,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:46,485 INFO L85 PathProgramCache]: Analyzing trace with hash 337818383, now seen corresponding path program 106 times [2022-03-01 16:26:46,485 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:46,485 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921736370] [2022-03-01 16:26:46,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:46,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:46,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:46,596 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:46,596 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921736370] [2022-03-01 16:26:46,596 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921736370] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:26:46,597 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116980001] [2022-03-01 16:26:46,597 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:26:46,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:26:46,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:26:46,598 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:26:46,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-03-01 16:26:46,697 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:26:46,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:26:46,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-01 16:26:46,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:26:46,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:46,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:26:47,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:47,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116980001] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:26:47,273 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:26:47,273 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2022-03-01 16:26:47,273 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038460820] [2022-03-01 16:26:47,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:26:47,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 16:26:47,273 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:47,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 16:26:47,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2022-03-01 16:26:47,274 INFO L87 Difference]: Start difference. First operand 12725 states and 38868 transitions. Second operand has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:49,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:49,207 INFO L93 Difference]: Finished difference Result 17204 states and 51997 transitions. [2022-03-01 16:26:49,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-01 16:26:49,207 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:26:49,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:49,239 INFO L225 Difference]: With dead ends: 17204 [2022-03-01 16:26:49,239 INFO L226 Difference]: Without dead ends: 17088 [2022-03-01 16:26:49,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3051 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1531, Invalid=8171, Unknown=0, NotChecked=0, Total=9702 [2022-03-01 16:26:49,241 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 476 mSDsluCounter, 2877 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 1766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:49,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 2978 Invalid, 1766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1681 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:26:49,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17088 states. [2022-03-01 16:26:49,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17088 to 13025. [2022-03-01 16:26:49,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13025 states, 13024 states have (on average 3.0553593366093366) internal successors, (39793), 13024 states have internal predecessors, (39793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:49,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13025 states to 13025 states and 39793 transitions. [2022-03-01 16:26:49,477 INFO L78 Accepts]: Start accepts. Automaton has 13025 states and 39793 transitions. Word has length 70 [2022-03-01 16:26:49,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:49,478 INFO L470 AbstractCegarLoop]: Abstraction has 13025 states and 39793 transitions. [2022-03-01 16:26:49,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:49,478 INFO L276 IsEmpty]: Start isEmpty. Operand 13025 states and 39793 transitions. [2022-03-01 16:26:49,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:26:49,496 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:49,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:49,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2022-03-01 16:26:49,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2022-03-01 16:26:49,697 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:49,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:49,697 INFO L85 PathProgramCache]: Analyzing trace with hash -209379389, now seen corresponding path program 107 times [2022-03-01 16:26:49,697 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:49,697 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183001158] [2022-03-01 16:26:49,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:49,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:49,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:49,817 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:49,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183001158] [2022-03-01 16:26:49,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183001158] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:26:49,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232137112] [2022-03-01 16:26:49,818 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:26:49,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:26:49,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:26:49,819 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:26:49,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-03-01 16:26:49,915 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 16:26:49,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:26:49,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:26:49,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:26:50,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:50,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:26:50,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:50,577 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232137112] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:26:50,577 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:26:50,577 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:26:50,577 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835510957] [2022-03-01 16:26:50,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:26:50,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:26:50,577 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:50,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:26:50,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=924, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:26:50,578 INFO L87 Difference]: Start difference. First operand 13025 states and 39793 transitions. Second operand has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:51,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:51,832 INFO L93 Difference]: Finished difference Result 16384 states and 49590 transitions. [2022-03-01 16:26:51,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-01 16:26:51,832 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:26:51,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:51,862 INFO L225 Difference]: With dead ends: 16384 [2022-03-01 16:26:51,862 INFO L226 Difference]: Without dead ends: 16301 [2022-03-01 16:26:51,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1495 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=971, Invalid=4579, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 16:26:51,863 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 347 mSDsluCounter, 2368 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 2432 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:51,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 2432 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:26:51,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16301 states. [2022-03-01 16:26:52,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16301 to 12957. [2022-03-01 16:26:52,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12957 states, 12956 states have (on average 3.0548008644643407) internal successors, (39578), 12956 states have internal predecessors, (39578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:52,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12957 states to 12957 states and 39578 transitions. [2022-03-01 16:26:52,094 INFO L78 Accepts]: Start accepts. Automaton has 12957 states and 39578 transitions. Word has length 70 [2022-03-01 16:26:52,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:52,094 INFO L470 AbstractCegarLoop]: Abstraction has 12957 states and 39578 transitions. [2022-03-01 16:26:52,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:52,094 INFO L276 IsEmpty]: Start isEmpty. Operand 12957 states and 39578 transitions. [2022-03-01 16:26:52,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:26:52,113 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:52,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:52,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-03-01 16:26:52,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:26:52,314 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:52,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:52,314 INFO L85 PathProgramCache]: Analyzing trace with hash -165032689, now seen corresponding path program 108 times [2022-03-01 16:26:52,314 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:52,315 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472999754] [2022-03-01 16:26:52,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:52,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:52,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:52,423 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:52,424 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472999754] [2022-03-01 16:26:52,424 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472999754] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:26:52,424 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105869205] [2022-03-01 16:26:52,424 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:26:52,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:26:52,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:26:52,425 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:26:52,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-03-01 16:26:52,524 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 16:26:52,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:26:52,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:26:52,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:26:52,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:52,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:26:53,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:53,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105869205] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:26:53,131 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:26:53,131 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:26:53,131 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525778881] [2022-03-01 16:26:53,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:26:53,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:26:53,131 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:53,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:26:53,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:26:53,131 INFO L87 Difference]: Start difference. First operand 12957 states and 39578 transitions. Second operand has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:54,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:54,343 INFO L93 Difference]: Finished difference Result 16263 states and 49223 transitions. [2022-03-01 16:26:54,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-01 16:26:54,343 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:26:54,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:54,370 INFO L225 Difference]: With dead ends: 16263 [2022-03-01 16:26:54,370 INFO L226 Difference]: Without dead ends: 16144 [2022-03-01 16:26:54,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1351 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=914, Invalid=4198, Unknown=0, NotChecked=0, Total=5112 [2022-03-01 16:26:54,370 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 358 mSDsluCounter, 2483 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 2510 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:54,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 2510 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:26:54,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16144 states. [2022-03-01 16:26:54,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16144 to 12821. [2022-03-01 16:26:54,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12821 states, 12820 states have (on average 3.0533541341653665) internal successors, (39144), 12820 states have internal predecessors, (39144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:54,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12821 states to 12821 states and 39144 transitions. [2022-03-01 16:26:54,583 INFO L78 Accepts]: Start accepts. Automaton has 12821 states and 39144 transitions. Word has length 70 [2022-03-01 16:26:54,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:54,583 INFO L470 AbstractCegarLoop]: Abstraction has 12821 states and 39144 transitions. [2022-03-01 16:26:54,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:54,584 INFO L276 IsEmpty]: Start isEmpty. Operand 12821 states and 39144 transitions. [2022-03-01 16:26:54,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:26:54,603 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:54,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:26:54,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-03-01 16:26:54,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:26:54,803 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:26:54,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:26:54,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1320297077, now seen corresponding path program 109 times [2022-03-01 16:26:54,804 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:26:54,804 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612450882] [2022-03-01 16:26:54,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:26:54,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:26:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:54,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:54,916 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:26:54,916 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612450882] [2022-03-01 16:26:54,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612450882] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:26:54,916 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030074042] [2022-03-01 16:26:54,916 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:26:54,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:26:54,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:26:54,917 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:26:54,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-03-01 16:26:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:26:55,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:26:55,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:26:55,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:55,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:26:55,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:26:55,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030074042] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:26:55,676 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:26:55,677 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:26:55,677 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438416520] [2022-03-01 16:26:55,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:26:55,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:26:55,677 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:26:55,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:26:55,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:26:55,677 INFO L87 Difference]: Start difference. First operand 12821 states and 39144 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:59,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:26:59,645 INFO L93 Difference]: Finished difference Result 22213 states and 67364 transitions. [2022-03-01 16:26:59,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-03-01 16:26:59,645 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:26:59,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:26:59,686 INFO L225 Difference]: With dead ends: 22213 [2022-03-01 16:26:59,686 INFO L226 Difference]: Without dead ends: 22073 [2022-03-01 16:26:59,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7399 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3723, Invalid=15737, Unknown=0, NotChecked=0, Total=19460 [2022-03-01 16:26:59,688 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 755 mSDsluCounter, 2270 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:26:59,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 2352 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:26:59,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22073 states. [2022-03-01 16:26:59,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22073 to 13585. [2022-03-01 16:26:59,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13585 states, 13584 states have (on average 3.0480712603062425) internal successors, (41405), 13584 states have internal predecessors, (41405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:59,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13585 states to 13585 states and 41405 transitions. [2022-03-01 16:26:59,967 INFO L78 Accepts]: Start accepts. Automaton has 13585 states and 41405 transitions. Word has length 70 [2022-03-01 16:26:59,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:26:59,967 INFO L470 AbstractCegarLoop]: Abstraction has 13585 states and 41405 transitions. [2022-03-01 16:26:59,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:26:59,968 INFO L276 IsEmpty]: Start isEmpty. Operand 13585 states and 41405 transitions. [2022-03-01 16:26:59,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:26:59,989 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:26:59,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:00,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-03-01 16:27:00,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:00,190 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:00,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:00,190 INFO L85 PathProgramCache]: Analyzing trace with hash -2086967501, now seen corresponding path program 110 times [2022-03-01 16:27:00,190 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:00,190 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830692233] [2022-03-01 16:27:00,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:00,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:00,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:00,298 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:00,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830692233] [2022-03-01 16:27:00,298 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830692233] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:27:00,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293283815] [2022-03-01 16:27:00,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:27:00,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:00,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:27:00,299 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:27:00,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-03-01 16:27:00,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:27:00,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:27:00,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:27:00,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:27:00,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:00,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:27:01,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:01,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293283815] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:27:01,068 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:27:01,068 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:27:01,068 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456779492] [2022-03-01 16:27:01,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:27:01,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:27:01,068 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:01,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:27:01,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:27:01,069 INFO L87 Difference]: Start difference. First operand 13585 states and 41405 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:02,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:02,265 INFO L93 Difference]: Finished difference Result 18264 states and 55207 transitions. [2022-03-01 16:27:02,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-01 16:27:02,265 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:27:02,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:02,357 INFO L225 Difference]: With dead ends: 18264 [2022-03-01 16:27:02,357 INFO L226 Difference]: Without dead ends: 18036 [2022-03-01 16:27:02,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1373 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=781, Invalid=4189, Unknown=0, NotChecked=0, Total=4970 [2022-03-01 16:27:02,357 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 408 mSDsluCounter, 2435 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:02,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 2469 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 16:27:02,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18036 states. [2022-03-01 16:27:02,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18036 to 13497. [2022-03-01 16:27:02,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13497 states, 13496 states have (on average 3.04794013040901) internal successors, (41135), 13496 states have internal predecessors, (41135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:02,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13497 states to 13497 states and 41135 transitions. [2022-03-01 16:27:02,569 INFO L78 Accepts]: Start accepts. Automaton has 13497 states and 41135 transitions. Word has length 70 [2022-03-01 16:27:02,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:02,569 INFO L470 AbstractCegarLoop]: Abstraction has 13497 states and 41135 transitions. [2022-03-01 16:27:02,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:02,569 INFO L276 IsEmpty]: Start isEmpty. Operand 13497 states and 41135 transitions. [2022-03-01 16:27:02,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:27:02,588 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:02,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:02,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-03-01 16:27:02,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:02,788 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:02,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:02,789 INFO L85 PathProgramCache]: Analyzing trace with hash 769385419, now seen corresponding path program 111 times [2022-03-01 16:27:02,789 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:02,789 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443782083] [2022-03-01 16:27:02,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:02,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:02,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:02,895 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:02,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443782083] [2022-03-01 16:27:02,895 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443782083] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:27:02,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564284431] [2022-03-01 16:27:02,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:27:02,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:02,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:27:02,896 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:27:02,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-03-01 16:27:02,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 16:27:02,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:27:02,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:27:02,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:27:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:03,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:27:03,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:03,653 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564284431] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:27:03,653 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:27:03,654 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:27:03,654 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435218974] [2022-03-01 16:27:03,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:27:03,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:27:03,654 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:03,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:27:03,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:27:03,654 INFO L87 Difference]: Start difference. First operand 13497 states and 41135 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:04,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:04,789 INFO L93 Difference]: Finished difference Result 18174 states and 54923 transitions. [2022-03-01 16:27:04,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-01 16:27:04,790 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:27:04,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:04,823 INFO L225 Difference]: With dead ends: 18174 [2022-03-01 16:27:04,823 INFO L226 Difference]: Without dead ends: 17901 [2022-03-01 16:27:04,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1391 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=727, Invalid=4103, Unknown=0, NotChecked=0, Total=4830 [2022-03-01 16:27:04,824 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 434 mSDsluCounter, 2678 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:04,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 2684 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 16:27:04,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17901 states. [2022-03-01 16:27:05,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17901 to 13481. [2022-03-01 16:27:05,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13481 states, 13480 states have (on average 3.047106824925816) internal successors, (41075), 13480 states have internal predecessors, (41075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:05,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13481 states to 13481 states and 41075 transitions. [2022-03-01 16:27:05,144 INFO L78 Accepts]: Start accepts. Automaton has 13481 states and 41075 transitions. Word has length 70 [2022-03-01 16:27:05,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:05,144 INFO L470 AbstractCegarLoop]: Abstraction has 13481 states and 41075 transitions. [2022-03-01 16:27:05,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:05,144 INFO L276 IsEmpty]: Start isEmpty. Operand 13481 states and 41075 transitions. [2022-03-01 16:27:05,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:27:05,163 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:05,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:05,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-03-01 16:27:05,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:05,364 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:05,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:05,364 INFO L85 PathProgramCache]: Analyzing trace with hash -144331505, now seen corresponding path program 112 times [2022-03-01 16:27:05,364 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:05,364 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538289279] [2022-03-01 16:27:05,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:05,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:05,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:05,473 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:05,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538289279] [2022-03-01 16:27:05,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538289279] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:27:05,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318071122] [2022-03-01 16:27:05,473 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:27:05,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:05,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:27:05,474 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:27:05,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-03-01 16:27:05,577 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:27:05,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:27:05,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-01 16:27:05,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:27:05,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:05,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:27:06,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:06,145 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318071122] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:27:06,145 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:27:06,145 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:27:06,145 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124209646] [2022-03-01 16:27:06,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:27:06,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:27:06,145 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:06,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:27:06,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=948, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:27:06,146 INFO L87 Difference]: Start difference. First operand 13481 states and 41075 transitions. Second operand has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:06,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:06,987 INFO L93 Difference]: Finished difference Result 15223 states and 45902 transitions. [2022-03-01 16:27:06,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-01 16:27:06,987 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:27:06,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:07,013 INFO L225 Difference]: With dead ends: 15223 [2022-03-01 16:27:07,013 INFO L226 Difference]: Without dead ends: 15100 [2022-03-01 16:27:07,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=396, Invalid=2796, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:27:07,014 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 359 mSDsluCounter, 2752 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:07,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 2761 Invalid, 1422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1393 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:27:07,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15100 states. [2022-03-01 16:27:07,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15100 to 13613. [2022-03-01 16:27:07,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13613 states, 13612 states have (on average 3.0462826917425803) internal successors, (41466), 13612 states have internal predecessors, (41466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:07,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13613 states to 13613 states and 41466 transitions. [2022-03-01 16:27:07,222 INFO L78 Accepts]: Start accepts. Automaton has 13613 states and 41466 transitions. Word has length 70 [2022-03-01 16:27:07,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:07,222 INFO L470 AbstractCegarLoop]: Abstraction has 13613 states and 41466 transitions. [2022-03-01 16:27:07,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:07,222 INFO L276 IsEmpty]: Start isEmpty. Operand 13613 states and 41466 transitions. [2022-03-01 16:27:07,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:27:07,241 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:07,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:07,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2022-03-01 16:27:07,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2022-03-01 16:27:07,443 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:07,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:07,444 INFO L85 PathProgramCache]: Analyzing trace with hash 776265127, now seen corresponding path program 113 times [2022-03-01 16:27:07,444 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:07,444 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778340040] [2022-03-01 16:27:07,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:07,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:07,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:07,557 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:07,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778340040] [2022-03-01 16:27:07,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778340040] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:27:07,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382883509] [2022-03-01 16:27:07,557 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:27:07,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:07,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:27:07,558 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:27:07,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-03-01 16:27:07,658 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:27:07,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:27:07,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:27:07,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:27:07,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:07,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:27:08,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:08,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382883509] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:27:08,368 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:27:08,368 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:27:08,368 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676366959] [2022-03-01 16:27:08,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:27:08,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:27:08,369 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:08,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:27:08,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:27:08,369 INFO L87 Difference]: Start difference. First operand 13613 states and 41466 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:10,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:10,198 INFO L93 Difference]: Finished difference Result 19314 states and 58208 transitions. [2022-03-01 16:27:10,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-01 16:27:10,198 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:27:10,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:10,239 INFO L225 Difference]: With dead ends: 19314 [2022-03-01 16:27:10,239 INFO L226 Difference]: Without dead ends: 19188 [2022-03-01 16:27:10,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=825, Invalid=5981, Unknown=0, NotChecked=0, Total=6806 [2022-03-01 16:27:10,240 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 402 mSDsluCounter, 2632 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 2664 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:10,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 2664 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:27:10,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19188 states. [2022-03-01 16:27:10,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19188 to 13641. [2022-03-01 16:27:10,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13641 states, 13640 states have (on average 3.045967741935484) internal successors, (41547), 13640 states have internal predecessors, (41547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:10,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13641 states to 13641 states and 41547 transitions. [2022-03-01 16:27:10,519 INFO L78 Accepts]: Start accepts. Automaton has 13641 states and 41547 transitions. Word has length 70 [2022-03-01 16:27:10,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:10,519 INFO L470 AbstractCegarLoop]: Abstraction has 13641 states and 41547 transitions. [2022-03-01 16:27:10,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:10,519 INFO L276 IsEmpty]: Start isEmpty. Operand 13641 states and 41547 transitions. [2022-03-01 16:27:10,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:27:10,540 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:10,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:10,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2022-03-01 16:27:10,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:10,743 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:10,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:10,744 INFO L85 PathProgramCache]: Analyzing trace with hash 737868383, now seen corresponding path program 114 times [2022-03-01 16:27:10,744 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:10,744 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382627735] [2022-03-01 16:27:10,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:10,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:10,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:10,859 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:10,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382627735] [2022-03-01 16:27:10,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382627735] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:27:10,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463989353] [2022-03-01 16:27:10,859 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:27:10,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:10,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:27:10,860 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:27:10,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-03-01 16:27:10,963 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 16:27:10,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:27:10,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:27:10,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:27:11,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:11,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:27:11,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:11,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463989353] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:27:11,632 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:27:11,632 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:27:11,632 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646671368] [2022-03-01 16:27:11,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:27:11,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:27:11,633 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:11,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:27:11,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:27:11,633 INFO L87 Difference]: Start difference. First operand 13641 states and 41547 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:13,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:13,395 INFO L93 Difference]: Finished difference Result 19962 states and 60120 transitions. [2022-03-01 16:27:13,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-01 16:27:13,395 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:27:13,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:13,433 INFO L225 Difference]: With dead ends: 19962 [2022-03-01 16:27:13,433 INFO L226 Difference]: Without dead ends: 19822 [2022-03-01 16:27:13,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1846 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=799, Invalid=5363, Unknown=0, NotChecked=0, Total=6162 [2022-03-01 16:27:13,434 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 444 mSDsluCounter, 2464 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 2497 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:13,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 2497 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:27:13,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19822 states. [2022-03-01 16:27:13,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19822 to 13653. [2022-03-01 16:27:13,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13653 states, 13652 states have (on average 3.0465865807207737) internal successors, (41592), 13652 states have internal predecessors, (41592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:13,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13653 states to 13653 states and 41592 transitions. [2022-03-01 16:27:13,707 INFO L78 Accepts]: Start accepts. Automaton has 13653 states and 41592 transitions. Word has length 70 [2022-03-01 16:27:13,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:13,707 INFO L470 AbstractCegarLoop]: Abstraction has 13653 states and 41592 transitions. [2022-03-01 16:27:13,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:13,707 INFO L276 IsEmpty]: Start isEmpty. Operand 13653 states and 41592 transitions. [2022-03-01 16:27:13,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:27:13,728 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:13,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:13,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2022-03-01 16:27:13,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2022-03-01 16:27:13,928 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:13,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:13,929 INFO L85 PathProgramCache]: Analyzing trace with hash -321983337, now seen corresponding path program 115 times [2022-03-01 16:27:13,929 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:13,929 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878316021] [2022-03-01 16:27:13,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:13,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:14,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:14,040 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:14,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878316021] [2022-03-01 16:27:14,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878316021] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:27:14,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795307346] [2022-03-01 16:27:14,041 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:27:14,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:14,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:27:14,042 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:27:14,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-03-01 16:27:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:14,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:27:14,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:27:14,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:14,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:27:14,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:14,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795307346] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:27:14,829 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:27:14,829 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:27:14,829 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775741974] [2022-03-01 16:27:14,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:27:14,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:27:14,829 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:14,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:27:14,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:27:14,830 INFO L87 Difference]: Start difference. First operand 13653 states and 41592 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:17,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:17,774 INFO L93 Difference]: Finished difference Result 20542 states and 61961 transitions. [2022-03-01 16:27:17,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-03-01 16:27:17,774 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:27:17,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:17,812 INFO L225 Difference]: With dead ends: 20542 [2022-03-01 16:27:17,812 INFO L226 Difference]: Without dead ends: 20416 [2022-03-01 16:27:17,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4450 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1732, Invalid=11150, Unknown=0, NotChecked=0, Total=12882 [2022-03-01 16:27:17,813 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 594 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:17,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 2081 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:27:17,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20416 states. [2022-03-01 16:27:18,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20416 to 13721. [2022-03-01 16:27:18,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13721 states, 13720 states have (on average 3.0462827988338192) internal successors, (41795), 13720 states have internal predecessors, (41795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:18,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13721 states to 13721 states and 41795 transitions. [2022-03-01 16:27:18,078 INFO L78 Accepts]: Start accepts. Automaton has 13721 states and 41795 transitions. Word has length 70 [2022-03-01 16:27:18,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:18,078 INFO L470 AbstractCegarLoop]: Abstraction has 13721 states and 41795 transitions. [2022-03-01 16:27:18,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:18,078 INFO L276 IsEmpty]: Start isEmpty. Operand 13721 states and 41795 transitions. [2022-03-01 16:27:18,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:27:18,099 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:18,099 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:18,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2022-03-01 16:27:18,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2022-03-01 16:27:18,299 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:18,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:18,300 INFO L85 PathProgramCache]: Analyzing trace with hash -360380081, now seen corresponding path program 116 times [2022-03-01 16:27:18,300 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:18,300 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142986872] [2022-03-01 16:27:18,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:18,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:18,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:18,413 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:18,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142986872] [2022-03-01 16:27:18,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142986872] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:27:18,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737396686] [2022-03-01 16:27:18,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:27:18,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:18,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:27:18,415 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:27:18,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-03-01 16:27:18,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:27:18,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:27:18,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:27:18,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:27:18,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:18,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:27:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:19,193 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737396686] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:27:19,194 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:27:19,194 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:27:19,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046037722] [2022-03-01 16:27:19,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:27:19,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:27:19,194 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:19,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:27:19,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:27:19,194 INFO L87 Difference]: Start difference. First operand 13721 states and 41795 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:22,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:22,243 INFO L93 Difference]: Finished difference Result 21226 states and 63940 transitions. [2022-03-01 16:27:22,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-03-01 16:27:22,243 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:27:22,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:22,287 INFO L225 Difference]: With dead ends: 21226 [2022-03-01 16:27:22,287 INFO L226 Difference]: Without dead ends: 21086 [2022-03-01 16:27:22,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4333 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1756, Invalid=10900, Unknown=0, NotChecked=0, Total=12656 [2022-03-01 16:27:22,288 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 609 mSDsluCounter, 2565 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:22,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 2613 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:27:22,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21086 states. [2022-03-01 16:27:22,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21086 to 13689. [2022-03-01 16:27:22,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13689 states, 13688 states have (on average 3.0466832261835184) internal successors, (41703), 13688 states have internal predecessors, (41703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:22,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13689 states to 13689 states and 41703 transitions. [2022-03-01 16:27:22,575 INFO L78 Accepts]: Start accepts. Automaton has 13689 states and 41703 transitions. Word has length 70 [2022-03-01 16:27:22,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:22,575 INFO L470 AbstractCegarLoop]: Abstraction has 13689 states and 41703 transitions. [2022-03-01 16:27:22,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:22,576 INFO L276 IsEmpty]: Start isEmpty. Operand 13689 states and 41703 transitions. [2022-03-01 16:27:22,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:27:22,597 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:22,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:22,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2022-03-01 16:27:22,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:22,798 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:22,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:22,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1326068461, now seen corresponding path program 117 times [2022-03-01 16:27:22,798 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:22,798 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292686086] [2022-03-01 16:27:22,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:22,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:22,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:22,911 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:22,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292686086] [2022-03-01 16:27:22,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292686086] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:27:22,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801753810] [2022-03-01 16:27:22,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:27:22,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:22,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:27:22,913 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:27:22,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-03-01 16:27:23,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 16:27:23,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:27:23,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:27:23,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:27:23,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:23,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:27:23,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:23,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801753810] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:27:23,692 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:27:23,692 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:27:23,693 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301316537] [2022-03-01 16:27:23,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:27:23,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:27:23,693 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:23,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:27:23,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=976, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:27:23,693 INFO L87 Difference]: Start difference. First operand 13689 states and 41703 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:27,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:27,436 INFO L93 Difference]: Finished difference Result 23633 states and 71229 transitions. [2022-03-01 16:27:27,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-03-01 16:27:27,436 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:27:27,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:27,482 INFO L225 Difference]: With dead ends: 23633 [2022-03-01 16:27:27,482 INFO L226 Difference]: Without dead ends: 23493 [2022-03-01 16:27:27,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6496 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2719, Invalid=14573, Unknown=0, NotChecked=0, Total=17292 [2022-03-01 16:27:27,483 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 749 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:27,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 2538 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:27:27,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23493 states. [2022-03-01 16:27:27,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23493 to 13777. [2022-03-01 16:27:27,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13777 states, 13776 states have (on average 3.060177119628339) internal successors, (42157), 13776 states have internal predecessors, (42157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:27,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13777 states to 13777 states and 42157 transitions. [2022-03-01 16:27:27,795 INFO L78 Accepts]: Start accepts. Automaton has 13777 states and 42157 transitions. Word has length 70 [2022-03-01 16:27:27,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:27,795 INFO L470 AbstractCegarLoop]: Abstraction has 13777 states and 42157 transitions. [2022-03-01 16:27:27,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:27,795 INFO L276 IsEmpty]: Start isEmpty. Operand 13777 states and 42157 transitions. [2022-03-01 16:27:27,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:27:27,816 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:27,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:27,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2022-03-01 16:27:28,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:28,017 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:28,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:28,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1942574281, now seen corresponding path program 118 times [2022-03-01 16:27:28,017 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:28,018 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058629718] [2022-03-01 16:27:28,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:28,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:28,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:28,131 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:28,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058629718] [2022-03-01 16:27:28,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058629718] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:27:28,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970276830] [2022-03-01 16:27:28,131 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:27:28,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:28,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:27:28,132 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:27:28,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-03-01 16:27:28,235 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:27:28,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:27:28,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-01 16:27:28,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:27:28,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:28,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:27:28,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:28,814 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970276830] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:27:28,814 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:27:28,814 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:27:28,814 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164476842] [2022-03-01 16:27:28,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:27:28,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:27:28,814 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:28,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:27:28,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:27:28,815 INFO L87 Difference]: Start difference. First operand 13777 states and 42157 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:32,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:32,056 INFO L93 Difference]: Finished difference Result 18748 states and 56815 transitions. [2022-03-01 16:27:32,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-03-01 16:27:32,057 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:27:32,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:32,092 INFO L225 Difference]: With dead ends: 18748 [2022-03-01 16:27:32,092 INFO L226 Difference]: Without dead ends: 18670 [2022-03-01 16:27:32,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8162 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2949, Invalid=20307, Unknown=0, NotChecked=0, Total=23256 [2022-03-01 16:27:32,094 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 655 mSDsluCounter, 3332 mSDsCounter, 0 mSdLazyCounter, 2045 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 3367 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:32,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 3367 Invalid, 2156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2045 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:27:32,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18670 states. [2022-03-01 16:27:32,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18670 to 14421. [2022-03-01 16:27:32,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14421 states, 14420 states have (on average 3.0624133148404993) internal successors, (44160), 14420 states have internal predecessors, (44160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:32,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14421 states to 14421 states and 44160 transitions. [2022-03-01 16:27:32,361 INFO L78 Accepts]: Start accepts. Automaton has 14421 states and 44160 transitions. Word has length 70 [2022-03-01 16:27:32,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:32,361 INFO L470 AbstractCegarLoop]: Abstraction has 14421 states and 44160 transitions. [2022-03-01 16:27:32,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:32,361 INFO L276 IsEmpty]: Start isEmpty. Operand 14421 states and 44160 transitions. [2022-03-01 16:27:32,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:27:32,382 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:32,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:32,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2022-03-01 16:27:32,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable150 [2022-03-01 16:27:32,583 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:32,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:32,583 INFO L85 PathProgramCache]: Analyzing trace with hash -2012351217, now seen corresponding path program 119 times [2022-03-01 16:27:32,583 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:32,583 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66836193] [2022-03-01 16:27:32,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:32,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:32,698 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:32,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66836193] [2022-03-01 16:27:32,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66836193] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:27:32,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118884681] [2022-03-01 16:27:32,698 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:27:32,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:32,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:27:32,699 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:27:32,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-03-01 16:27:32,803 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:27:32,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:27:32,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:27:32,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:27:33,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:33,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:27:33,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:33,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118884681] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:27:33,376 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:27:33,376 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:27:33,376 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424070632] [2022-03-01 16:27:33,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:27:33,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:27:33,376 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:33,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:27:33,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:27:33,376 INFO L87 Difference]: Start difference. First operand 14421 states and 44160 transitions. Second operand has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:34,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:34,440 INFO L93 Difference]: Finished difference Result 15479 states and 47015 transitions. [2022-03-01 16:27:34,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:27:34,441 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:27:34,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:34,473 INFO L225 Difference]: With dead ends: 15479 [2022-03-01 16:27:34,473 INFO L226 Difference]: Without dead ends: 15416 [2022-03-01 16:27:34,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=607, Invalid=3683, Unknown=0, NotChecked=0, Total=4290 [2022-03-01 16:27:34,474 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 391 mSDsluCounter, 2395 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:34,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 2456 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 16:27:34,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15416 states. [2022-03-01 16:27:34,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15416 to 14377. [2022-03-01 16:27:34,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14377 states, 14376 states have (on average 3.062813021702838) internal successors, (44031), 14376 states have internal predecessors, (44031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:34,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14377 states to 14377 states and 44031 transitions. [2022-03-01 16:27:34,729 INFO L78 Accepts]: Start accepts. Automaton has 14377 states and 44031 transitions. Word has length 70 [2022-03-01 16:27:34,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:34,729 INFO L470 AbstractCegarLoop]: Abstraction has 14377 states and 44031 transitions. [2022-03-01 16:27:34,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:34,729 INFO L276 IsEmpty]: Start isEmpty. Operand 14377 states and 44031 transitions. [2022-03-01 16:27:34,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:27:34,751 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:34,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:34,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2022-03-01 16:27:34,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:34,952 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:34,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:34,952 INFO L85 PathProgramCache]: Analyzing trace with hash 570526483, now seen corresponding path program 120 times [2022-03-01 16:27:34,952 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:34,952 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081388105] [2022-03-01 16:27:34,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:34,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:35,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:35,066 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:35,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081388105] [2022-03-01 16:27:35,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081388105] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:27:35,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966946232] [2022-03-01 16:27:35,066 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:27:35,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:35,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:27:35,067 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:27:35,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-03-01 16:27:35,172 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 16:27:35,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:27:35,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:27:35,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:27:35,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:35,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:27:35,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:35,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966946232] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:27:35,859 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:27:35,859 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:27:35,859 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993423603] [2022-03-01 16:27:35,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:27:35,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:27:35,860 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:35,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:27:35,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:27:35,860 INFO L87 Difference]: Start difference. First operand 14377 states and 44031 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:37,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:37,660 INFO L93 Difference]: Finished difference Result 20394 states and 61586 transitions. [2022-03-01 16:27:37,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-01 16:27:37,660 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:27:37,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:37,702 INFO L225 Difference]: With dead ends: 20394 [2022-03-01 16:27:37,702 INFO L226 Difference]: Without dead ends: 20260 [2022-03-01 16:27:37,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=828, Invalid=5492, Unknown=0, NotChecked=0, Total=6320 [2022-03-01 16:27:37,703 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 389 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 2742 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:37,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 2742 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:27:37,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20260 states. [2022-03-01 16:27:37,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20260 to 14373. [2022-03-01 16:27:38,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14373 states, 14372 states have (on average 3.0631784024492066) internal successors, (44024), 14372 states have internal predecessors, (44024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:38,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14373 states to 14373 states and 44024 transitions. [2022-03-01 16:27:38,033 INFO L78 Accepts]: Start accepts. Automaton has 14373 states and 44024 transitions. Word has length 70 [2022-03-01 16:27:38,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:38,033 INFO L470 AbstractCegarLoop]: Abstraction has 14373 states and 44024 transitions. [2022-03-01 16:27:38,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:38,034 INFO L276 IsEmpty]: Start isEmpty. Operand 14373 states and 44024 transitions. [2022-03-01 16:27:38,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:27:38,055 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:38,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:38,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-03-01 16:27:38,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:38,256 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:38,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:38,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1182430989, now seen corresponding path program 121 times [2022-03-01 16:27:38,256 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:38,256 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193555766] [2022-03-01 16:27:38,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:38,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:38,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:38,372 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:38,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193555766] [2022-03-01 16:27:38,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193555766] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:27:38,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030574437] [2022-03-01 16:27:38,372 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:27:38,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:38,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:27:38,373 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:27:38,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-03-01 16:27:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:38,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:27:38,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:27:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:38,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:27:39,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:39,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030574437] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:27:39,168 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:27:39,168 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:27:39,168 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667096355] [2022-03-01 16:27:39,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:27:39,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:27:39,168 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:39,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:27:39,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:27:39,169 INFO L87 Difference]: Start difference. First operand 14373 states and 44024 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:41,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:41,031 INFO L93 Difference]: Finished difference Result 20356 states and 61496 transitions. [2022-03-01 16:27:41,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-01 16:27:41,032 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:27:41,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:41,074 INFO L225 Difference]: With dead ends: 20356 [2022-03-01 16:27:41,074 INFO L226 Difference]: Without dead ends: 20206 [2022-03-01 16:27:41,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=924, Invalid=6048, Unknown=0, NotChecked=0, Total=6972 [2022-03-01 16:27:41,075 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 450 mSDsluCounter, 2831 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 2857 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:41,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 2857 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:27:41,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20206 states. [2022-03-01 16:27:41,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20206 to 14345. [2022-03-01 16:27:41,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14345 states, 14344 states have (on average 3.0632320133853876) internal successors, (43939), 14344 states have internal predecessors, (43939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:41,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14345 states to 14345 states and 43939 transitions. [2022-03-01 16:27:41,409 INFO L78 Accepts]: Start accepts. Automaton has 14345 states and 43939 transitions. Word has length 70 [2022-03-01 16:27:41,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:41,409 INFO L470 AbstractCegarLoop]: Abstraction has 14345 states and 43939 transitions. [2022-03-01 16:27:41,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:41,410 INFO L276 IsEmpty]: Start isEmpty. Operand 14345 states and 43939 transitions. [2022-03-01 16:27:41,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:27:41,431 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:41,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:41,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2022-03-01 16:27:41,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:41,632 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:41,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:41,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1226777689, now seen corresponding path program 122 times [2022-03-01 16:27:41,633 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:41,633 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706787656] [2022-03-01 16:27:41,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:41,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:41,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:41,743 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:41,743 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706787656] [2022-03-01 16:27:41,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706787656] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:27:41,743 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011880854] [2022-03-01 16:27:41,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:27:41,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:41,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:27:41,744 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:27:41,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-03-01 16:27:41,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:27:41,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:27:41,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:27:41,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:27:42,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:42,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:27:42,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:42,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011880854] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:27:42,534 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:27:42,535 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:27:42,535 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540999777] [2022-03-01 16:27:42,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:27:42,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:27:42,535 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:42,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:27:42,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=995, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:27:42,535 INFO L87 Difference]: Start difference. First operand 14345 states and 43939 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:44,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:44,035 INFO L93 Difference]: Finished difference Result 19962 states and 60523 transitions. [2022-03-01 16:27:44,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-01 16:27:44,036 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:27:44,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:44,079 INFO L225 Difference]: With dead ends: 19962 [2022-03-01 16:27:44,079 INFO L226 Difference]: Without dead ends: 19783 [2022-03-01 16:27:44,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1506 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=766, Invalid=4636, Unknown=0, NotChecked=0, Total=5402 [2022-03-01 16:27:44,080 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 475 mSDsluCounter, 2523 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:44,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 2538 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:27:44,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19783 states. [2022-03-01 16:27:44,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19783 to 14317. [2022-03-01 16:27:44,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14317 states, 14316 states have (on average 3.062727018720313) internal successors, (43846), 14316 states have internal predecessors, (43846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:44,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14317 states to 14317 states and 43846 transitions. [2022-03-01 16:27:44,360 INFO L78 Accepts]: Start accepts. Automaton has 14317 states and 43846 transitions. Word has length 70 [2022-03-01 16:27:44,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:44,360 INFO L470 AbstractCegarLoop]: Abstraction has 14317 states and 43846 transitions. [2022-03-01 16:27:44,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:44,361 INFO L276 IsEmpty]: Start isEmpty. Operand 14317 states and 43846 transitions. [2022-03-01 16:27:44,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:27:44,381 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:44,381 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:44,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2022-03-01 16:27:44,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:44,582 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:44,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:44,582 INFO L85 PathProgramCache]: Analyzing trace with hash 2058340145, now seen corresponding path program 123 times [2022-03-01 16:27:44,582 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:44,582 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961225720] [2022-03-01 16:27:44,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:44,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:44,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:44,775 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:44,775 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961225720] [2022-03-01 16:27:44,775 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961225720] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:27:44,775 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747036040] [2022-03-01 16:27:44,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:27:44,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:44,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:27:44,776 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:27:44,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-03-01 16:27:44,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 16:27:44,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:27:44,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:27:44,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:27:45,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:45,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:27:45,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:45,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747036040] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:27:45,459 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:27:45,459 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:27:45,459 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693009658] [2022-03-01 16:27:45,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:27:45,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:27:45,459 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:45,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:27:45,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:27:45,460 INFO L87 Difference]: Start difference. First operand 14317 states and 43846 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:46,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:46,482 INFO L93 Difference]: Finished difference Result 17980 states and 54647 transitions. [2022-03-01 16:27:46,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-01 16:27:46,482 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:27:46,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:46,517 INFO L225 Difference]: With dead ends: 17980 [2022-03-01 16:27:46,517 INFO L226 Difference]: Without dead ends: 17797 [2022-03-01 16:27:46,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1570 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=825, Invalid=4725, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 16:27:46,518 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 478 mSDsluCounter, 2400 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 2438 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:46,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 2438 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 16:27:46,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17797 states. [2022-03-01 16:27:46,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17797 to 14341. [2022-03-01 16:27:46,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14341 states, 14340 states have (on average 3.059135285913529) internal successors, (43868), 14340 states have internal predecessors, (43868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:46,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14341 states to 14341 states and 43868 transitions. [2022-03-01 16:27:46,780 INFO L78 Accepts]: Start accepts. Automaton has 14341 states and 43868 transitions. Word has length 70 [2022-03-01 16:27:46,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:46,780 INFO L470 AbstractCegarLoop]: Abstraction has 14341 states and 43868 transitions. [2022-03-01 16:27:46,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:46,780 INFO L276 IsEmpty]: Start isEmpty. Operand 14341 states and 43868 transitions. [2022-03-01 16:27:46,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:27:46,802 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:46,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:46,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2022-03-01 16:27:47,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2022-03-01 16:27:47,003 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:47,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:47,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1316030519, now seen corresponding path program 124 times [2022-03-01 16:27:47,003 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:47,003 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369146295] [2022-03-01 16:27:47,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:47,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:47,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:47,120 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:47,120 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369146295] [2022-03-01 16:27:47,120 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369146295] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:27:47,120 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240361081] [2022-03-01 16:27:47,120 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:27:47,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:47,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:27:47,121 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:27:47,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-03-01 16:27:47,233 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:27:47,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:27:47,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-01 16:27:47,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:27:47,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:47,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:27:47,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:47,840 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240361081] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:27:47,840 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:27:47,840 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:27:47,841 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789767356] [2022-03-01 16:27:47,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:27:47,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:27:47,841 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:47,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:27:47,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:27:47,841 INFO L87 Difference]: Start difference. First operand 14341 states and 43868 transitions. Second operand has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:49,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:49,296 INFO L93 Difference]: Finished difference Result 23806 states and 72311 transitions. [2022-03-01 16:27:49,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-01 16:27:49,297 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:27:49,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:49,356 INFO L225 Difference]: With dead ends: 23806 [2022-03-01 16:27:49,356 INFO L226 Difference]: Without dead ends: 23707 [2022-03-01 16:27:49,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2157 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=920, Invalid=5886, Unknown=0, NotChecked=0, Total=6806 [2022-03-01 16:27:49,357 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 513 mSDsluCounter, 2443 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:49,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 2486 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:27:49,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23707 states. [2022-03-01 16:27:49,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23707 to 14569. [2022-03-01 16:27:49,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14569 states, 14568 states have (on average 3.061161449752883) internal successors, (44595), 14568 states have internal predecessors, (44595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:49,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14569 states to 14569 states and 44595 transitions. [2022-03-01 16:27:49,709 INFO L78 Accepts]: Start accepts. Automaton has 14569 states and 44595 transitions. Word has length 70 [2022-03-01 16:27:49,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:49,709 INFO L470 AbstractCegarLoop]: Abstraction has 14569 states and 44595 transitions. [2022-03-01 16:27:49,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:49,709 INFO L276 IsEmpty]: Start isEmpty. Operand 14569 states and 44595 transitions. [2022-03-01 16:27:49,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:27:49,730 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:49,731 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:49,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2022-03-01 16:27:49,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2022-03-01 16:27:49,931 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:49,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:49,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1354427263, now seen corresponding path program 125 times [2022-03-01 16:27:49,932 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:49,932 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449012911] [2022-03-01 16:27:49,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:49,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:50,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:50,058 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:50,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449012911] [2022-03-01 16:27:50,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449012911] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:27:50,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368805172] [2022-03-01 16:27:50,058 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:27:50,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:50,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:27:50,060 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:27:50,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-03-01 16:27:50,175 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:27:50,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:27:50,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:27:50,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:27:50,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:50,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:27:50,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:50,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368805172] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:27:50,839 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:27:50,839 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:27:50,839 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160425365] [2022-03-01 16:27:50,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:27:50,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:27:50,839 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:50,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:27:50,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:27:50,840 INFO L87 Difference]: Start difference. First operand 14569 states and 44595 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:53,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:53,600 INFO L93 Difference]: Finished difference Result 27149 states and 82633 transitions. [2022-03-01 16:27:53,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-03-01 16:27:53,600 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:27:53,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:53,652 INFO L225 Difference]: With dead ends: 27149 [2022-03-01 16:27:53,652 INFO L226 Difference]: Without dead ends: 27009 [2022-03-01 16:27:53,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4430 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1891, Invalid=10765, Unknown=0, NotChecked=0, Total=12656 [2022-03-01 16:27:53,653 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 683 mSDsluCounter, 2765 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:53,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [683 Valid, 2792 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:27:53,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27009 states. [2022-03-01 16:27:53,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27009 to 14625. [2022-03-01 16:27:53,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14625 states, 14624 states have (on average 3.061337527352298) internal successors, (44769), 14624 states have internal predecessors, (44769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:53,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14625 states to 14625 states and 44769 transitions. [2022-03-01 16:27:53,999 INFO L78 Accepts]: Start accepts. Automaton has 14625 states and 44769 transitions. Word has length 70 [2022-03-01 16:27:53,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:27:53,999 INFO L470 AbstractCegarLoop]: Abstraction has 14625 states and 44769 transitions. [2022-03-01 16:27:53,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:53,999 INFO L276 IsEmpty]: Start isEmpty. Operand 14625 states and 44769 transitions. [2022-03-01 16:27:54,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:27:54,021 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:27:54,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:27:54,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2022-03-01 16:27:54,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2022-03-01 16:27:54,222 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:27:54,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:27:54,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1880688313, now seen corresponding path program 126 times [2022-03-01 16:27:54,222 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:27:54,222 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628549758] [2022-03-01 16:27:54,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:27:54,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:27:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:27:54,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:54,332 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:27:54,332 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628549758] [2022-03-01 16:27:54,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628549758] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:27:54,332 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723200970] [2022-03-01 16:27:54,332 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:27:54,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:27:54,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:27:54,333 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:27:54,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-03-01 16:27:54,444 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 16:27:54,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:27:54,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:27:54,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:27:54,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:54,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:27:55,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:27:55,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723200970] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:27:55,127 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:27:55,127 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:27:55,127 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987537868] [2022-03-01 16:27:55,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:27:55,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:27:55,128 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:27:55,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:27:55,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:27:55,128 INFO L87 Difference]: Start difference. First operand 14625 states and 44769 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:27:59,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:27:59,775 INFO L93 Difference]: Finished difference Result 27837 states and 84927 transitions. [2022-03-01 16:27:59,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-03-01 16:27:59,775 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:27:59,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:27:59,837 INFO L225 Difference]: With dead ends: 27837 [2022-03-01 16:27:59,837 INFO L226 Difference]: Without dead ends: 27711 [2022-03-01 16:27:59,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10675 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=3694, Invalid=23366, Unknown=0, NotChecked=0, Total=27060 [2022-03-01 16:27:59,840 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 797 mSDsluCounter, 2918 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 2942 SdHoareTripleChecker+Invalid, 1624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:27:59,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [797 Valid, 2942 Invalid, 1624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:27:59,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27711 states. [2022-03-01 16:28:00,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27711 to 14513. [2022-03-01 16:28:00,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14513 states, 14512 states have (on average 3.0601571113561192) internal successors, (44409), 14512 states have internal predecessors, (44409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:00,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14513 states to 14513 states and 44409 transitions. [2022-03-01 16:28:00,210 INFO L78 Accepts]: Start accepts. Automaton has 14513 states and 44409 transitions. Word has length 70 [2022-03-01 16:28:00,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:00,210 INFO L470 AbstractCegarLoop]: Abstraction has 14513 states and 44409 transitions. [2022-03-01 16:28:00,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:00,210 INFO L276 IsEmpty]: Start isEmpty. Operand 14513 states and 44409 transitions. [2022-03-01 16:28:00,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:28:00,232 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:00,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:00,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2022-03-01 16:28:00,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2022-03-01 16:28:00,433 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:00,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:00,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1842291569, now seen corresponding path program 127 times [2022-03-01 16:28:00,433 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:00,433 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514001814] [2022-03-01 16:28:00,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:00,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:00,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:00,585 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:00,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514001814] [2022-03-01 16:28:00,586 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514001814] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:28:00,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77530665] [2022-03-01 16:28:00,586 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:28:00,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:28:00,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:28:00,587 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:28:00,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-03-01 16:28:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:00,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:28:00,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:28:00,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:00,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:28:01,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:01,373 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77530665] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:28:01,373 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:28:01,373 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:28:01,373 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647410567] [2022-03-01 16:28:01,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:28:01,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:28:01,374 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:01,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:28:01,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:28:01,374 INFO L87 Difference]: Start difference. First operand 14513 states and 44409 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:06,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:06,267 INFO L93 Difference]: Finished difference Result 28353 states and 86292 transitions. [2022-03-01 16:28:06,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-03-01 16:28:06,267 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:28:06,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:06,392 INFO L225 Difference]: With dead ends: 28353 [2022-03-01 16:28:06,393 INFO L226 Difference]: Without dead ends: 28213 [2022-03-01 16:28:06,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11311 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4137, Invalid=24593, Unknown=0, NotChecked=0, Total=28730 [2022-03-01 16:28:06,394 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 750 mSDsluCounter, 3080 mSDsCounter, 0 mSdLazyCounter, 1618 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 3123 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:06,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 3123 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1618 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:28:06,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28213 states. [2022-03-01 16:28:06,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28213 to 14497. [2022-03-01 16:28:06,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14497 states, 14496 states have (on average 3.0599475717439293) internal successors, (44357), 14496 states have internal predecessors, (44357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:06,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14497 states to 14497 states and 44357 transitions. [2022-03-01 16:28:06,756 INFO L78 Accepts]: Start accepts. Automaton has 14497 states and 44357 transitions. Word has length 70 [2022-03-01 16:28:06,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:06,757 INFO L470 AbstractCegarLoop]: Abstraction has 14497 states and 44357 transitions. [2022-03-01 16:28:06,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:06,757 INFO L276 IsEmpty]: Start isEmpty. Operand 14497 states and 44357 transitions. [2022-03-01 16:28:06,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:28:06,780 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:06,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:06,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2022-03-01 16:28:06,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:28:06,980 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:06,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:06,981 INFO L85 PathProgramCache]: Analyzing trace with hash 876603189, now seen corresponding path program 128 times [2022-03-01 16:28:06,981 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:06,981 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288815793] [2022-03-01 16:28:06,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:06,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:07,091 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:07,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288815793] [2022-03-01 16:28:07,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288815793] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:28:07,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208341473] [2022-03-01 16:28:07,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:28:07,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:28:07,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:28:07,093 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:28:07,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-03-01 16:28:07,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:28:07,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:28:07,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:28:07,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:28:07,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:07,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:28:07,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:07,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208341473] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:28:07,863 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:28:07,863 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:28:07,863 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137720476] [2022-03-01 16:28:07,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:28:07,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:28:07,863 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:07,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:28:07,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=971, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:28:07,864 INFO L87 Difference]: Start difference. First operand 14497 states and 44357 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:14,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:14,376 INFO L93 Difference]: Finished difference Result 29139 states and 88557 transitions. [2022-03-01 16:28:14,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-03-01 16:28:14,376 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:28:14,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:14,440 INFO L225 Difference]: With dead ends: 29139 [2022-03-01 16:28:14,440 INFO L226 Difference]: Without dead ends: 28999 [2022-03-01 16:28:14,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18841 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=6774, Invalid=37536, Unknown=0, NotChecked=0, Total=44310 [2022-03-01 16:28:14,445 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 1043 mSDsluCounter, 3009 mSDsCounter, 0 mSdLazyCounter, 1767 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:14,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1043 Valid, 3048 Invalid, 1941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1767 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:28:14,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28999 states. [2022-03-01 16:28:14,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28999 to 14293. [2022-03-01 16:28:14,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14293 states, 14292 states have (on average 3.0542961097117267) internal successors, (43652), 14292 states have internal predecessors, (43652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:14,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14293 states to 14293 states and 43652 transitions. [2022-03-01 16:28:14,850 INFO L78 Accepts]: Start accepts. Automaton has 14293 states and 43652 transitions. Word has length 70 [2022-03-01 16:28:14,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:14,850 INFO L470 AbstractCegarLoop]: Abstraction has 14293 states and 43652 transitions. [2022-03-01 16:28:14,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:14,850 INFO L276 IsEmpty]: Start isEmpty. Operand 14293 states and 43652 transitions. [2022-03-01 16:28:14,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:28:14,871 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:14,871 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:14,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2022-03-01 16:28:15,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable160 [2022-03-01 16:28:15,072 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:15,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:15,072 INFO L85 PathProgramCache]: Analyzing trace with hash -149721365, now seen corresponding path program 129 times [2022-03-01 16:28:15,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:15,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251296477] [2022-03-01 16:28:15,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:15,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:15,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:15,190 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:15,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251296477] [2022-03-01 16:28:15,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251296477] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:28:15,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418417944] [2022-03-01 16:28:15,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:28:15,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:28:15,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:28:15,191 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:28:15,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-03-01 16:28:15,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 16:28:15,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:28:15,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:28:15,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:28:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:15,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:28:15,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:15,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418417944] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:28:15,956 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:28:15,956 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:28:15,956 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307631014] [2022-03-01 16:28:15,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:28:15,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:28:15,957 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:15,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:28:15,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:28:15,957 INFO L87 Difference]: Start difference. First operand 14293 states and 43652 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:17,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:17,317 INFO L93 Difference]: Finished difference Result 15416 states and 46706 transitions. [2022-03-01 16:28:17,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-01 16:28:17,318 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:28:17,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:17,345 INFO L225 Difference]: With dead ends: 15416 [2022-03-01 16:28:17,345 INFO L226 Difference]: Without dead ends: 15338 [2022-03-01 16:28:17,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1881 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1297, Invalid=5509, Unknown=0, NotChecked=0, Total=6806 [2022-03-01 16:28:17,346 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 500 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:17,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 2606 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:28:17,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15338 states. [2022-03-01 16:28:17,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15338 to 12497. [2022-03-01 16:28:17,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12497 states, 12496 states have (on average 3.036571702944942) internal successors, (37945), 12496 states have internal predecessors, (37945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:17,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12497 states to 12497 states and 37945 transitions. [2022-03-01 16:28:17,556 INFO L78 Accepts]: Start accepts. Automaton has 12497 states and 37945 transitions. Word has length 70 [2022-03-01 16:28:17,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:17,556 INFO L470 AbstractCegarLoop]: Abstraction has 12497 states and 37945 transitions. [2022-03-01 16:28:17,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:17,556 INFO L276 IsEmpty]: Start isEmpty. Operand 12497 states and 37945 transitions. [2022-03-01 16:28:17,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:28:17,574 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:17,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:17,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Forceful destruction successful, exit code 0 [2022-03-01 16:28:17,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2022-03-01 16:28:17,774 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:17,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:17,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1521769163, now seen corresponding path program 130 times [2022-03-01 16:28:17,775 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:17,775 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389052464] [2022-03-01 16:28:17,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:17,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:17,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:17,899 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:17,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389052464] [2022-03-01 16:28:17,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389052464] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:28:17,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311617559] [2022-03-01 16:28:17,899 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:28:17,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:28:17,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:28:17,900 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:28:17,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-03-01 16:28:18,010 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:28:18,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:28:18,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-01 16:28:18,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:28:18,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:18,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:28:18,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:18,599 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311617559] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:28:18,599 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:28:18,600 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:28:18,600 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80333868] [2022-03-01 16:28:18,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:28:18,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:28:18,600 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:18,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:28:18,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:28:18,600 INFO L87 Difference]: Start difference. First operand 12497 states and 37945 transitions. Second operand has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:19,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:19,981 INFO L93 Difference]: Finished difference Result 20350 states and 61283 transitions. [2022-03-01 16:28:19,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-01 16:28:19,982 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:28:19,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:20,022 INFO L225 Difference]: With dead ends: 20350 [2022-03-01 16:28:20,022 INFO L226 Difference]: Without dead ends: 20219 [2022-03-01 16:28:20,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2056 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=965, Invalid=5515, Unknown=0, NotChecked=0, Total=6480 [2022-03-01 16:28:20,023 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 457 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 2384 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:20,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 2384 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:28:20,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20219 states. [2022-03-01 16:28:20,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20219 to 12461. [2022-03-01 16:28:20,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12461 states, 12460 states have (on average 3.0380417335473515) internal successors, (37854), 12460 states have internal predecessors, (37854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:20,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12461 states to 12461 states and 37854 transitions. [2022-03-01 16:28:20,297 INFO L78 Accepts]: Start accepts. Automaton has 12461 states and 37854 transitions. Word has length 70 [2022-03-01 16:28:20,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:20,298 INFO L470 AbstractCegarLoop]: Abstraction has 12461 states and 37854 transitions. [2022-03-01 16:28:20,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:20,298 INFO L276 IsEmpty]: Start isEmpty. Operand 12461 states and 37854 transitions. [2022-03-01 16:28:20,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:28:20,317 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:20,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:20,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2022-03-01 16:28:20,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:28:20,518 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:20,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:20,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1312213585, now seen corresponding path program 131 times [2022-03-01 16:28:20,518 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:20,518 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704014716] [2022-03-01 16:28:20,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:20,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:20,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:20,629 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:20,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704014716] [2022-03-01 16:28:20,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704014716] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:28:20,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840229807] [2022-03-01 16:28:20,629 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:28:20,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:28:20,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:28:20,630 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:28:20,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-03-01 16:28:20,741 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:28:20,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:28:20,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:28:20,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:28:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:20,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-01 16:28:20,988 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840229807] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:28:20,988 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-01 16:28:20,988 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 25 [2022-03-01 16:28:20,989 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511916532] [2022-03-01 16:28:20,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:28:20,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-01 16:28:20,989 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:20,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-01 16:28:20,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2022-03-01 16:28:20,989 INFO L87 Difference]: Start difference. First operand 12461 states and 37854 transitions. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:21,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:21,179 INFO L93 Difference]: Finished difference Result 12624 states and 38234 transitions. [2022-03-01 16:28:21,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-01 16:28:21,179 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:28:21,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:21,203 INFO L225 Difference]: With dead ends: 12624 [2022-03-01 16:28:21,204 INFO L226 Difference]: Without dead ends: 12337 [2022-03-01 16:28:21,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2022-03-01 16:28:21,204 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 124 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:21,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 1197 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:28:21,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12337 states. [2022-03-01 16:28:21,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12337 to 12177. [2022-03-01 16:28:21,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12177 states, 12176 states have (on average 3.019464520367937) internal successors, (36765), 12176 states have internal predecessors, (36765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:21,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12177 states to 12177 states and 36765 transitions. [2022-03-01 16:28:21,436 INFO L78 Accepts]: Start accepts. Automaton has 12177 states and 36765 transitions. Word has length 70 [2022-03-01 16:28:21,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:21,437 INFO L470 AbstractCegarLoop]: Abstraction has 12177 states and 36765 transitions. [2022-03-01 16:28:21,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:21,437 INFO L276 IsEmpty]: Start isEmpty. Operand 12177 states and 36765 transitions. [2022-03-01 16:28:21,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:28:21,452 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:21,453 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:21,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Forceful destruction successful, exit code 0 [2022-03-01 16:28:21,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:28:21,653 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:21,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:21,654 INFO L85 PathProgramCache]: Analyzing trace with hash 961642929, now seen corresponding path program 132 times [2022-03-01 16:28:21,654 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:21,654 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867362970] [2022-03-01 16:28:21,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:21,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:21,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:21,764 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:21,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867362970] [2022-03-01 16:28:21,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867362970] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:28:21,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110064298] [2022-03-01 16:28:21,764 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:28:21,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:28:21,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:28:21,765 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:28:21,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-03-01 16:28:21,878 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 16:28:21,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:28:21,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:28:21,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:28:22,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:22,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:28:22,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:22,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110064298] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:28:22,550 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:28:22,550 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:28:22,550 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368868421] [2022-03-01 16:28:22,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:28:22,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:28:22,550 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:22,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:28:22,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=983, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:28:22,551 INFO L87 Difference]: Start difference. First operand 12177 states and 36765 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:24,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:24,223 INFO L93 Difference]: Finished difference Result 21497 states and 64789 transitions. [2022-03-01 16:28:24,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-03-01 16:28:24,223 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:28:24,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:24,266 INFO L225 Difference]: With dead ends: 21497 [2022-03-01 16:28:24,266 INFO L226 Difference]: Without dead ends: 21227 [2022-03-01 16:28:24,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2570 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=915, Invalid=6741, Unknown=0, NotChecked=0, Total=7656 [2022-03-01 16:28:24,267 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 574 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 2660 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:24,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 2660 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:28:24,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21227 states. [2022-03-01 16:28:24,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21227 to 12001. [2022-03-01 16:28:24,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12001 states, 12000 states have (on average 3.0064166666666665) internal successors, (36077), 12000 states have internal predecessors, (36077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:24,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12001 states to 12001 states and 36077 transitions. [2022-03-01 16:28:24,539 INFO L78 Accepts]: Start accepts. Automaton has 12001 states and 36077 transitions. Word has length 70 [2022-03-01 16:28:24,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:24,539 INFO L470 AbstractCegarLoop]: Abstraction has 12001 states and 36077 transitions. [2022-03-01 16:28:24,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:24,539 INFO L276 IsEmpty]: Start isEmpty. Operand 12001 states and 36077 transitions. [2022-03-01 16:28:24,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:28:24,556 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:24,556 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:24,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Forceful destruction successful, exit code 0 [2022-03-01 16:28:24,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable164 [2022-03-01 16:28:24,756 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:24,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:24,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1882239561, now seen corresponding path program 133 times [2022-03-01 16:28:24,757 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:24,757 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838655173] [2022-03-01 16:28:24,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:24,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:24,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:24,872 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:24,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838655173] [2022-03-01 16:28:24,873 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838655173] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:28:24,873 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661875420] [2022-03-01 16:28:24,873 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:28:24,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:28:24,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:28:24,874 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:28:24,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-03-01 16:28:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:24,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:28:24,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:28:25,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:25,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:28:25,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:25,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661875420] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:28:25,697 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:28:25,697 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:28:25,697 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050250525] [2022-03-01 16:28:25,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:28:25,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:28:25,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:25,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:28:25,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:28:25,698 INFO L87 Difference]: Start difference. First operand 12001 states and 36077 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:27,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:27,264 INFO L93 Difference]: Finished difference Result 21117 states and 63584 transitions. [2022-03-01 16:28:27,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-03-01 16:28:27,264 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:28:27,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:27,307 INFO L225 Difference]: With dead ends: 21117 [2022-03-01 16:28:27,307 INFO L226 Difference]: Without dead ends: 20843 [2022-03-01 16:28:27,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2494 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=976, Invalid=6680, Unknown=0, NotChecked=0, Total=7656 [2022-03-01 16:28:27,308 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 535 mSDsluCounter, 2064 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 2120 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:27,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 2120 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 16:28:27,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20843 states. [2022-03-01 16:28:27,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20843 to 11889. [2022-03-01 16:28:27,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11889 states, 11888 states have (on average 2.947257738896366) internal successors, (35037), 11888 states have internal predecessors, (35037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:27,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11889 states to 11889 states and 35037 transitions. [2022-03-01 16:28:27,573 INFO L78 Accepts]: Start accepts. Automaton has 11889 states and 35037 transitions. Word has length 70 [2022-03-01 16:28:27,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:27,573 INFO L470 AbstractCegarLoop]: Abstraction has 11889 states and 35037 transitions. [2022-03-01 16:28:27,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:27,573 INFO L276 IsEmpty]: Start isEmpty. Operand 11889 states and 35037 transitions. [2022-03-01 16:28:27,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:28:27,589 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:27,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:27,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2022-03-01 16:28:27,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:28:27,789 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:27,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:27,790 INFO L85 PathProgramCache]: Analyzing trace with hash -866153785, now seen corresponding path program 134 times [2022-03-01 16:28:27,790 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:27,790 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23770195] [2022-03-01 16:28:27,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:27,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:27,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:27,908 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:27,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23770195] [2022-03-01 16:28:27,908 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23770195] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:28:27,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007233977] [2022-03-01 16:28:27,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:28:27,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:28:27,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:28:27,909 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:28:27,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-03-01 16:28:28,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:28:28,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:28:28,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:28:28,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:28:28,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:28,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:28:28,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:28,689 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007233977] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:28:28,689 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:28:28,689 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-01 16:28:28,689 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586280399] [2022-03-01 16:28:28,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:28:28,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 16:28:28,690 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:28,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 16:28:28,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 16:28:28,690 INFO L87 Difference]: Start difference. First operand 11889 states and 35037 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:30,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:30,254 INFO L93 Difference]: Finished difference Result 21857 states and 64947 transitions. [2022-03-01 16:28:30,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-01 16:28:30,254 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:28:30,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:30,301 INFO L225 Difference]: With dead ends: 21857 [2022-03-01 16:28:30,301 INFO L226 Difference]: Without dead ends: 21691 [2022-03-01 16:28:30,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2293 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1037, Invalid=6103, Unknown=0, NotChecked=0, Total=7140 [2022-03-01 16:28:30,302 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 490 mSDsluCounter, 2415 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 2450 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:30,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [490 Valid, 2450 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:28:30,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21691 states. [2022-03-01 16:28:30,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21691 to 11861. [2022-03-01 16:28:30,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11861 states, 11860 states have (on average 2.948735244519393) internal successors, (34972), 11860 states have internal predecessors, (34972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:30,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11861 states to 11861 states and 34972 transitions. [2022-03-01 16:28:30,590 INFO L78 Accepts]: Start accepts. Automaton has 11861 states and 34972 transitions. Word has length 70 [2022-03-01 16:28:30,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:30,590 INFO L470 AbstractCegarLoop]: Abstraction has 11861 states and 34972 transitions. [2022-03-01 16:28:30,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:30,590 INFO L276 IsEmpty]: Start isEmpty. Operand 11861 states and 34972 transitions. [2022-03-01 16:28:30,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:28:30,606 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:30,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:30,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Forceful destruction successful, exit code 0 [2022-03-01 16:28:30,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2022-03-01 16:28:30,807 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:30,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:30,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1964973657, now seen corresponding path program 135 times [2022-03-01 16:28:30,807 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:30,807 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496269779] [2022-03-01 16:28:30,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:30,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:30,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:30,954 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:30,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496269779] [2022-03-01 16:28:30,955 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496269779] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:28:30,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464273902] [2022-03-01 16:28:30,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:28:30,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:28:30,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:28:30,956 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:28:30,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-03-01 16:28:31,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 16:28:31,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:28:31,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:28:31,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:28:31,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:31,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:28:31,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:31,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464273902] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:28:31,748 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:28:31,748 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-03-01 16:28:31,748 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811322812] [2022-03-01 16:28:31,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:28:31,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-01 16:28:31,748 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:31,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-01 16:28:31,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1043, Unknown=0, NotChecked=0, Total=1190 [2022-03-01 16:28:31,749 INFO L87 Difference]: Start difference. First operand 11861 states and 34972 transitions. Second operand has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:33,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:33,306 INFO L93 Difference]: Finished difference Result 14438 states and 41939 transitions. [2022-03-01 16:28:33,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-01 16:28:33,306 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:28:33,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:33,334 INFO L225 Difference]: With dead ends: 14438 [2022-03-01 16:28:33,334 INFO L226 Difference]: Without dead ends: 14321 [2022-03-01 16:28:33,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1911 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=812, Invalid=5508, Unknown=0, NotChecked=0, Total=6320 [2022-03-01 16:28:33,335 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 463 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 1403 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 2719 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:33,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 2719 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1403 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:28:33,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14321 states. [2022-03-01 16:28:33,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14321 to 11965. [2022-03-01 16:28:33,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11965 states, 11964 states have (on average 2.9486793714476764) internal successors, (35278), 11964 states have internal predecessors, (35278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:33,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11965 states to 11965 states and 35278 transitions. [2022-03-01 16:28:33,574 INFO L78 Accepts]: Start accepts. Automaton has 11965 states and 35278 transitions. Word has length 70 [2022-03-01 16:28:33,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:33,574 INFO L470 AbstractCegarLoop]: Abstraction has 11965 states and 35278 transitions. [2022-03-01 16:28:33,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:33,574 INFO L276 IsEmpty]: Start isEmpty. Operand 11965 states and 35278 transitions. [2022-03-01 16:28:33,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:28:33,591 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:33,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:33,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Ended with exit code 0 [2022-03-01 16:28:33,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167,136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:28:33,799 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:33,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:33,800 INFO L85 PathProgramCache]: Analyzing trace with hash 866725193, now seen corresponding path program 136 times [2022-03-01 16:28:33,800 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:33,800 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651065516] [2022-03-01 16:28:33,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:33,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:33,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:33,913 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:33,913 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651065516] [2022-03-01 16:28:33,913 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651065516] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:28:33,913 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853396257] [2022-03-01 16:28:33,913 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:28:33,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:28:33,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:28:33,914 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:28:33,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-03-01 16:28:34,027 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:28:34,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:28:34,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-01 16:28:34,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:28:34,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:34,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:28:34,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:34,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853396257] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:28:34,593 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:28:34,593 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:28:34,593 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599693347] [2022-03-01 16:28:34,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:28:34,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:28:34,593 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:34,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:28:34,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:28:34,594 INFO L87 Difference]: Start difference. First operand 11965 states and 35278 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:36,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:36,078 INFO L93 Difference]: Finished difference Result 14444 states and 42080 transitions. [2022-03-01 16:28:36,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-01 16:28:36,079 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:28:36,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:36,106 INFO L225 Difference]: With dead ends: 14444 [2022-03-01 16:28:36,106 INFO L226 Difference]: Without dead ends: 14354 [2022-03-01 16:28:36,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2297 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1034, Invalid=6106, Unknown=0, NotChecked=0, Total=7140 [2022-03-01 16:28:36,107 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 444 mSDsluCounter, 2569 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 2588 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:36,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 2588 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:28:36,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14354 states. [2022-03-01 16:28:36,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14354 to 11997. [2022-03-01 16:28:36,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11997 states, 11996 states have (on average 2.948816272090697) internal successors, (35374), 11996 states have internal predecessors, (35374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:36,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11997 states to 11997 states and 35374 transitions. [2022-03-01 16:28:36,308 INFO L78 Accepts]: Start accepts. Automaton has 11997 states and 35374 transitions. Word has length 70 [2022-03-01 16:28:36,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:36,308 INFO L470 AbstractCegarLoop]: Abstraction has 11997 states and 35374 transitions. [2022-03-01 16:28:36,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:36,309 INFO L276 IsEmpty]: Start isEmpty. Operand 11997 states and 35374 transitions. [2022-03-01 16:28:36,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:28:36,324 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:36,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:36,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Forceful destruction successful, exit code 0 [2022-03-01 16:28:36,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2022-03-01 16:28:36,525 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:36,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:36,525 INFO L85 PathProgramCache]: Analyzing trace with hash -98963187, now seen corresponding path program 137 times [2022-03-01 16:28:36,525 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:36,526 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88568030] [2022-03-01 16:28:36,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:36,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:36,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:36,636 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:36,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88568030] [2022-03-01 16:28:36,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88568030] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:28:36,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338844168] [2022-03-01 16:28:36,637 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:28:36,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:28:36,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:28:36,638 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:28:36,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-03-01 16:28:36,751 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 16:28:36,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:28:36,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:28:36,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:28:37,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:37,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:28:37,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:37,390 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338844168] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:28:37,390 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:28:37,390 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-01 16:28:37,390 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050440255] [2022-03-01 16:28:37,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:28:37,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:28:37,391 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:37,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:28:37,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=900, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:28:37,391 INFO L87 Difference]: Start difference. First operand 11997 states and 35374 transitions. Second operand has 33 states, 33 states have (on average 2.909090909090909) internal successors, (96), 33 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:38,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:38,879 INFO L93 Difference]: Finished difference Result 16331 states and 48156 transitions. [2022-03-01 16:28:38,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-01 16:28:38,879 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.909090909090909) internal successors, (96), 33 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:28:38,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:38,910 INFO L225 Difference]: With dead ends: 16331 [2022-03-01 16:28:38,910 INFO L226 Difference]: Without dead ends: 16245 [2022-03-01 16:28:38,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2524 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1375, Invalid=6107, Unknown=0, NotChecked=0, Total=7482 [2022-03-01 16:28:38,911 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 478 mSDsluCounter, 2288 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 2339 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:38,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 2339 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:28:38,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16245 states. [2022-03-01 16:28:39,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16245 to 12441. [2022-03-01 16:28:39,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12441 states, 12440 states have (on average 2.9558681672025724) internal successors, (36771), 12440 states have internal predecessors, (36771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:39,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12441 states to 12441 states and 36771 transitions. [2022-03-01 16:28:39,147 INFO L78 Accepts]: Start accepts. Automaton has 12441 states and 36771 transitions. Word has length 70 [2022-03-01 16:28:39,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:39,147 INFO L470 AbstractCegarLoop]: Abstraction has 12441 states and 36771 transitions. [2022-03-01 16:28:39,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.909090909090909) internal successors, (96), 33 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:39,147 INFO L276 IsEmpty]: Start isEmpty. Operand 12441 states and 36771 transitions. [2022-03-01 16:28:39,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:28:39,165 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:39,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:39,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Forceful destruction successful, exit code 0 [2022-03-01 16:28:39,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2022-03-01 16:28:39,366 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:39,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:39,366 INFO L85 PathProgramCache]: Analyzing trace with hash 133632917, now seen corresponding path program 138 times [2022-03-01 16:28:39,366 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:39,366 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678874286] [2022-03-01 16:28:39,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:39,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:39,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:39,478 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:39,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678874286] [2022-03-01 16:28:39,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678874286] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:28:39,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128318540] [2022-03-01 16:28:39,478 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:28:39,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:28:39,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:28:39,479 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:28:39,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-03-01 16:28:39,596 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 16:28:39,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:28:39,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:28:39,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:28:39,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:39,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:28:40,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:40,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128318540] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:28:40,306 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:28:40,306 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-01 16:28:40,307 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908364108] [2022-03-01 16:28:40,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:28:40,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:28:40,307 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:40,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:28:40,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:28:40,308 INFO L87 Difference]: Start difference. First operand 12441 states and 36771 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:43,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:43,095 INFO L93 Difference]: Finished difference Result 15186 states and 44456 transitions. [2022-03-01 16:28:43,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-01 16:28:43,096 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:28:43,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:43,126 INFO L225 Difference]: With dead ends: 15186 [2022-03-01 16:28:43,126 INFO L226 Difference]: Without dead ends: 14980 [2022-03-01 16:28:43,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3073 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1259, Invalid=8641, Unknown=0, NotChecked=0, Total=9900 [2022-03-01 16:28:43,127 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 422 mSDsluCounter, 2750 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 2816 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:43,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 2816 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:28:43,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14980 states. [2022-03-01 16:28:43,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14980 to 12509. [2022-03-01 16:28:43,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12509 states, 12508 states have (on average 2.9550687559961624) internal successors, (36962), 12508 states have internal predecessors, (36962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:43,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12509 states to 12509 states and 36962 transitions. [2022-03-01 16:28:43,352 INFO L78 Accepts]: Start accepts. Automaton has 12509 states and 36962 transitions. Word has length 70 [2022-03-01 16:28:43,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:43,352 INFO L470 AbstractCegarLoop]: Abstraction has 12509 states and 36962 transitions. [2022-03-01 16:28:43,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:43,352 INFO L276 IsEmpty]: Start isEmpty. Operand 12509 states and 36962 transitions. [2022-03-01 16:28:43,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:28:43,371 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:43,371 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:43,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Forceful destruction successful, exit code 0 [2022-03-01 16:28:43,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2022-03-01 16:28:43,571 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:43,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:43,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1883448011, now seen corresponding path program 139 times [2022-03-01 16:28:43,572 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:43,572 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536460235] [2022-03-01 16:28:43,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:43,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:43,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:43,681 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:43,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536460235] [2022-03-01 16:28:43,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536460235] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:28:43,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307805157] [2022-03-01 16:28:43,681 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:28:43,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:28:43,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:28:43,682 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:28:43,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-03-01 16:28:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:43,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:28:43,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:28:44,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:44,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:28:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:44,475 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307805157] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:28:44,475 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:28:44,475 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-01 16:28:44,476 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515899199] [2022-03-01 16:28:44,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:28:44,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:28:44,476 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:44,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:28:44,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=938, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:28:44,476 INFO L87 Difference]: Start difference. First operand 12509 states and 36962 transitions. Second operand has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:47,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:47,648 INFO L93 Difference]: Finished difference Result 16083 states and 47002 transitions. [2022-03-01 16:28:47,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-01 16:28:47,648 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:28:47,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:47,678 INFO L225 Difference]: With dead ends: 16083 [2022-03-01 16:28:47,678 INFO L226 Difference]: Without dead ends: 15900 [2022-03-01 16:28:47,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3750 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1507, Invalid=10049, Unknown=0, NotChecked=0, Total=11556 [2022-03-01 16:28:47,679 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 444 mSDsluCounter, 2966 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 2992 SdHoareTripleChecker+Invalid, 1575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:47,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 2992 Invalid, 1575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:28:47,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15900 states. [2022-03-01 16:28:47,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15900 to 12681. [2022-03-01 16:28:47,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12681 states, 12680 states have (on average 2.9535488958990537) internal successors, (37451), 12680 states have internal predecessors, (37451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:47,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12681 states to 12681 states and 37451 transitions. [2022-03-01 16:28:47,910 INFO L78 Accepts]: Start accepts. Automaton has 12681 states and 37451 transitions. Word has length 70 [2022-03-01 16:28:47,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:47,910 INFO L470 AbstractCegarLoop]: Abstraction has 12681 states and 37451 transitions. [2022-03-01 16:28:47,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:47,910 INFO L276 IsEmpty]: Start isEmpty. Operand 12681 states and 37451 transitions. [2022-03-01 16:28:47,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:28:47,929 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:47,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:47,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Forceful destruction successful, exit code 0 [2022-03-01 16:28:48,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable171 [2022-03-01 16:28:48,129 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:48,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:48,129 INFO L85 PathProgramCache]: Analyzing trace with hash 728183623, now seen corresponding path program 140 times [2022-03-01 16:28:48,130 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:48,130 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297568915] [2022-03-01 16:28:48,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:48,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:48,243 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:48,243 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297568915] [2022-03-01 16:28:48,243 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297568915] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:28:48,243 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2846693] [2022-03-01 16:28:48,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:28:48,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:28:48,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:28:48,244 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:28:48,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-03-01 16:28:48,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:28:48,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:28:48,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:28:48,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:28:48,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:48,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:28:49,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:49,024 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2846693] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:28:49,024 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:28:49,025 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-01 16:28:49,025 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173345631] [2022-03-01 16:28:49,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:28:49,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:28:49,025 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:49,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:28:49,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:28:49,025 INFO L87 Difference]: Start difference. First operand 12681 states and 37451 transitions. Second operand has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:53,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:53,224 INFO L93 Difference]: Finished difference Result 17930 states and 52560 transitions. [2022-03-01 16:28:53,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-03-01 16:28:53,225 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:28:53,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:53,258 INFO L225 Difference]: With dead ends: 17930 [2022-03-01 16:28:53,258 INFO L226 Difference]: Without dead ends: 17844 [2022-03-01 16:28:53,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6380 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2695, Invalid=15395, Unknown=0, NotChecked=0, Total=18090 [2022-03-01 16:28:53,260 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 590 mSDsluCounter, 2708 mSDsCounter, 0 mSdLazyCounter, 1722 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:53,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [590 Valid, 2770 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1722 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:28:53,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17844 states. [2022-03-01 16:28:53,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17844 to 12541. [2022-03-01 16:28:53,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12541 states, 12540 states have (on average 2.952950558213716) internal successors, (37030), 12540 states have internal predecessors, (37030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:53,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12541 states to 12541 states and 37030 transitions. [2022-03-01 16:28:53,507 INFO L78 Accepts]: Start accepts. Automaton has 12541 states and 37030 transitions. Word has length 70 [2022-03-01 16:28:53,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:53,507 INFO L470 AbstractCegarLoop]: Abstraction has 12541 states and 37030 transitions. [2022-03-01 16:28:53,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:53,507 INFO L276 IsEmpty]: Start isEmpty. Operand 12541 states and 37030 transitions. [2022-03-01 16:28:53,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-01 16:28:53,526 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:53,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:53,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2022-03-01 16:28:53,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:28:53,726 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:53,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:53,727 INFO L85 PathProgramCache]: Analyzing trace with hash 225332551, now seen corresponding path program 141 times [2022-03-01 16:28:53,727 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:53,727 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967996333] [2022-03-01 16:28:53,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:53,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:53,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:53,835 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:53,835 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967996333] [2022-03-01 16:28:53,835 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967996333] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:28:53,835 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755962919] [2022-03-01 16:28:53,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:28:53,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:28:53,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:28:53,836 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:28:53,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2022-03-01 16:28:53,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 16:28:53,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:28:53,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:28:53,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:28:54,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:54,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:28:54,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:54,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755962919] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:28:54,620 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:28:54,620 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-01 16:28:54,620 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200353274] [2022-03-01 16:28:54,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:28:54,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 16:28:54,620 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:54,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 16:28:54,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:28:54,621 INFO L87 Difference]: Start difference. First operand 12541 states and 37030 transitions. Second operand has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:58,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:58,592 INFO L93 Difference]: Finished difference Result 16321 states and 47667 transitions. [2022-03-01 16:28:58,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-03-01 16:28:58,592 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-01 16:28:58,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:58,623 INFO L225 Difference]: With dead ends: 16321 [2022-03-01 16:28:58,623 INFO L226 Difference]: Without dead ends: 16138 [2022-03-01 16:28:58,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5234 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2371, Invalid=12881, Unknown=0, NotChecked=0, Total=15252 [2022-03-01 16:28:58,625 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 559 mSDsluCounter, 2713 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 1653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:58,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [559 Valid, 2763 Invalid, 1653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:28:58,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16138 states. [2022-03-01 16:28:58,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16138 to 12657. [2022-03-01 16:28:58,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12657 states, 12656 states have (on average 2.9520385587863465) internal successors, (37361), 12656 states have internal predecessors, (37361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:58,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12657 states to 12657 states and 37361 transitions. [2022-03-01 16:28:58,855 INFO L78 Accepts]: Start accepts. Automaton has 12657 states and 37361 transitions. Word has length 70 [2022-03-01 16:28:58,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:28:58,855 INFO L470 AbstractCegarLoop]: Abstraction has 12657 states and 37361 transitions. [2022-03-01 16:28:58,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:58,855 INFO L276 IsEmpty]: Start isEmpty. Operand 12657 states and 37361 transitions. [2022-03-01 16:28:58,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-01 16:28:58,874 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:28:58,874 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:28:58,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Forceful destruction successful, exit code 0 [2022-03-01 16:28:59,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:28:59,075 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:28:59,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:28:59,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1700585577, now seen corresponding path program 142 times [2022-03-01 16:28:59,075 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:28:59,075 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887086802] [2022-03-01 16:28:59,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:28:59,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:28:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:28:59,127 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:59,127 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:28:59,127 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887086802] [2022-03-01 16:28:59,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887086802] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:28:59,128 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029333999] [2022-03-01 16:28:59,128 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:28:59,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:28:59,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:28:59,129 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:28:59,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2022-03-01 16:28:59,246 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:28:59,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:28:59,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 16:28:59,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:28:59,323 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:59,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:28:59,445 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:28:59,445 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029333999] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:28:59,446 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:28:59,446 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-01 16:28:59,446 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203482322] [2022-03-01 16:28:59,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:28:59,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-01 16:28:59,446 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:28:59,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-01 16:28:59,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-03-01 16:28:59,446 INFO L87 Difference]: Start difference. First operand 12657 states and 37361 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:28:59,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:28:59,760 INFO L93 Difference]: Finished difference Result 14135 states and 41295 transitions. [2022-03-01 16:28:59,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 16:28:59,761 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-01 16:28:59,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:28:59,787 INFO L225 Difference]: With dead ends: 14135 [2022-03-01 16:28:59,787 INFO L226 Difference]: Without dead ends: 14135 [2022-03-01 16:28:59,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2022-03-01 16:28:59,787 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 304 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:28:59,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 823 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:28:59,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14135 states. [2022-03-01 16:28:59,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14135 to 12801. [2022-03-01 16:29:00,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12801 states, 12800 states have (on average 2.951640625) internal successors, (37781), 12800 states have internal predecessors, (37781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:00,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12801 states to 12801 states and 37781 transitions. [2022-03-01 16:29:00,030 INFO L78 Accepts]: Start accepts. Automaton has 12801 states and 37781 transitions. Word has length 74 [2022-03-01 16:29:00,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:00,031 INFO L470 AbstractCegarLoop]: Abstraction has 12801 states and 37781 transitions. [2022-03-01 16:29:00,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:00,031 INFO L276 IsEmpty]: Start isEmpty. Operand 12801 states and 37781 transitions. [2022-03-01 16:29:00,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-01 16:29:00,049 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:00,050 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:00,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Forceful destruction successful, exit code 0 [2022-03-01 16:29:00,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:00,250 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:00,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:00,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1759323673, now seen corresponding path program 143 times [2022-03-01 16:29:00,251 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:00,251 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77955455] [2022-03-01 16:29:00,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:00,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:00,285 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:00,285 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77955455] [2022-03-01 16:29:00,285 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77955455] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:29:00,285 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929647250] [2022-03-01 16:29:00,285 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:29:00,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:00,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:29:00,286 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:29:00,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-03-01 16:29:00,404 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-01 16:29:00,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:29:00,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 16:29:00,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:29:00,481 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:00,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:29:00,602 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:00,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929647250] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:29:00,602 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:29:00,602 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-01 16:29:00,602 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192661872] [2022-03-01 16:29:00,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:29:00,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-01 16:29:00,602 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:00,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-01 16:29:00,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-01 16:29:00,603 INFO L87 Difference]: Start difference. First operand 12801 states and 37781 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:01,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:01,081 INFO L93 Difference]: Finished difference Result 14181 states and 41374 transitions. [2022-03-01 16:29:01,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:29:01,081 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-01 16:29:01,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:01,108 INFO L225 Difference]: With dead ends: 14181 [2022-03-01 16:29:01,108 INFO L226 Difference]: Without dead ends: 14181 [2022-03-01 16:29:01,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=595, Invalid=1475, Unknown=0, NotChecked=0, Total=2070 [2022-03-01 16:29:01,108 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 409 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:01,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 1122 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 16:29:01,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14181 states. [2022-03-01 16:29:01,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14181 to 12857. [2022-03-01 16:29:01,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12857 states, 12856 states have (on average 2.9513845675171124) internal successors, (37943), 12856 states have internal predecessors, (37943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:01,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12857 states to 12857 states and 37943 transitions. [2022-03-01 16:29:01,325 INFO L78 Accepts]: Start accepts. Automaton has 12857 states and 37943 transitions. Word has length 74 [2022-03-01 16:29:01,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:01,325 INFO L470 AbstractCegarLoop]: Abstraction has 12857 states and 37943 transitions. [2022-03-01 16:29:01,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:01,325 INFO L276 IsEmpty]: Start isEmpty. Operand 12857 states and 37943 transitions. [2022-03-01 16:29:01,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-01 16:29:01,343 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:01,344 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:01,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Forceful destruction successful, exit code 0 [2022-03-01 16:29:01,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:01,544 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:01,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:01,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1130358979, now seen corresponding path program 144 times [2022-03-01 16:29:01,544 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:01,545 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453757842] [2022-03-01 16:29:01,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:01,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:01,580 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:01,580 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:01,580 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453757842] [2022-03-01 16:29:01,580 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453757842] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:29:01,580 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316863096] [2022-03-01 16:29:01,580 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:29:01,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:01,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:29:01,581 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:29:01,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2022-03-01 16:29:01,701 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 16:29:01,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:29:01,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 16:29:01,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:29:01,779 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:01,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:29:01,891 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:01,892 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316863096] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:29:01,892 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:29:01,892 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-03-01 16:29:01,892 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728552849] [2022-03-01 16:29:01,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:29:01,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-01 16:29:01,892 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:01,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-01 16:29:01,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-03-01 16:29:01,892 INFO L87 Difference]: Start difference. First operand 12857 states and 37943 transitions. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:02,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:02,161 INFO L93 Difference]: Finished difference Result 14088 states and 41318 transitions. [2022-03-01 16:29:02,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 16:29:02,161 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-01 16:29:02,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:02,187 INFO L225 Difference]: With dead ends: 14088 [2022-03-01 16:29:02,187 INFO L226 Difference]: Without dead ends: 14088 [2022-03-01 16:29:02,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=249, Invalid=507, Unknown=0, NotChecked=0, Total=756 [2022-03-01 16:29:02,187 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 285 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:02,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 989 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:29:02,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14088 states. [2022-03-01 16:29:02,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14088 to 12465. [2022-03-01 16:29:02,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12465 states, 12464 states have (on average 2.9574775353016687) internal successors, (36862), 12464 states have internal predecessors, (36862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:02,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12465 states to 12465 states and 36862 transitions. [2022-03-01 16:29:02,441 INFO L78 Accepts]: Start accepts. Automaton has 12465 states and 36862 transitions. Word has length 74 [2022-03-01 16:29:02,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:02,441 INFO L470 AbstractCegarLoop]: Abstraction has 12465 states and 36862 transitions. [2022-03-01 16:29:02,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:02,442 INFO L276 IsEmpty]: Start isEmpty. Operand 12465 states and 36862 transitions. [2022-03-01 16:29:02,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-01 16:29:02,460 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:02,460 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:02,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Forceful destruction successful, exit code 0 [2022-03-01 16:29:02,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable176 [2022-03-01 16:29:02,661 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:02,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:02,661 INFO L85 PathProgramCache]: Analyzing trace with hash -525314691, now seen corresponding path program 145 times [2022-03-01 16:29:02,661 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:02,661 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501486434] [2022-03-01 16:29:02,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:02,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:02,696 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:02,696 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501486434] [2022-03-01 16:29:02,696 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501486434] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:29:02,696 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543427141] [2022-03-01 16:29:02,696 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:29:02,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:02,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:29:02,697 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:29:02,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-03-01 16:29:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:02,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 16:29:02,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:29:02,898 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:02,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:29:03,023 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:03,023 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543427141] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:29:03,024 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:29:03,024 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-01 16:29:03,024 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723498095] [2022-03-01 16:29:03,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:29:03,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-01 16:29:03,024 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:03,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-01 16:29:03,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-03-01 16:29:03,024 INFO L87 Difference]: Start difference. First operand 12465 states and 36862 transitions. Second operand has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:03,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:03,316 INFO L93 Difference]: Finished difference Result 13302 states and 38964 transitions. [2022-03-01 16:29:03,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 16:29:03,316 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-01 16:29:03,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:03,340 INFO L225 Difference]: With dead ends: 13302 [2022-03-01 16:29:03,340 INFO L226 Difference]: Without dead ends: 13266 [2022-03-01 16:29:03,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=241, Invalid=571, Unknown=0, NotChecked=0, Total=812 [2022-03-01 16:29:03,341 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 163 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:03,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 1006 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:29:03,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13266 states. [2022-03-01 16:29:03,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13266 to 12133. [2022-03-01 16:29:03,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12133 states, 12132 states have (on average 2.956890867128256) internal successors, (35873), 12132 states have internal predecessors, (35873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:03,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12133 states to 12133 states and 35873 transitions. [2022-03-01 16:29:03,539 INFO L78 Accepts]: Start accepts. Automaton has 12133 states and 35873 transitions. Word has length 74 [2022-03-01 16:29:03,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:03,539 INFO L470 AbstractCegarLoop]: Abstraction has 12133 states and 35873 transitions. [2022-03-01 16:29:03,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:03,539 INFO L276 IsEmpty]: Start isEmpty. Operand 12133 states and 35873 transitions. [2022-03-01 16:29:03,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-01 16:29:03,555 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:03,555 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:03,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Forceful destruction successful, exit code 0 [2022-03-01 16:29:03,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:03,756 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:03,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:03,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1963115701, now seen corresponding path program 146 times [2022-03-01 16:29:03,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:03,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049760880] [2022-03-01 16:29:03,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:03,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:03,793 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:03,793 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:03,793 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049760880] [2022-03-01 16:29:03,793 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049760880] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:29:03,793 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284865118] [2022-03-01 16:29:03,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:29:03,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:03,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:29:03,794 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:29:03,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-03-01 16:29:03,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:29:03,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:29:03,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 16:29:03,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:29:03,991 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:03,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:29:04,112 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:04,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284865118] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:29:04,112 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:29:04,113 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-01 16:29:04,113 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975447448] [2022-03-01 16:29:04,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:29:04,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-01 16:29:04,113 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:04,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-01 16:29:04,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-03-01 16:29:04,113 INFO L87 Difference]: Start difference. First operand 12133 states and 35873 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:04,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:04,489 INFO L93 Difference]: Finished difference Result 13672 states and 39905 transitions. [2022-03-01 16:29:04,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-01 16:29:04,489 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-01 16:29:04,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:04,515 INFO L225 Difference]: With dead ends: 13672 [2022-03-01 16:29:04,515 INFO L226 Difference]: Without dead ends: 13672 [2022-03-01 16:29:04,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=282, Invalid=978, Unknown=0, NotChecked=0, Total=1260 [2022-03-01 16:29:04,515 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 310 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:04,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 850 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 16:29:04,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13672 states. [2022-03-01 16:29:04,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13672 to 11773. [2022-03-01 16:29:04,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11773 states, 11772 states have (on average 2.953024125042474) internal successors, (34763), 11772 states have internal predecessors, (34763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:04,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11773 states to 11773 states and 34763 transitions. [2022-03-01 16:29:04,709 INFO L78 Accepts]: Start accepts. Automaton has 11773 states and 34763 transitions. Word has length 74 [2022-03-01 16:29:04,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:04,709 INFO L470 AbstractCegarLoop]: Abstraction has 11773 states and 34763 transitions. [2022-03-01 16:29:04,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:04,710 INFO L276 IsEmpty]: Start isEmpty. Operand 11773 states and 34763 transitions. [2022-03-01 16:29:04,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-01 16:29:04,725 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:04,725 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:04,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Forceful destruction successful, exit code 0 [2022-03-01 16:29:04,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2022-03-01 16:29:04,926 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:04,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:04,926 INFO L85 PathProgramCache]: Analyzing trace with hash -433839251, now seen corresponding path program 147 times [2022-03-01 16:29:04,926 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:04,926 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756606914] [2022-03-01 16:29:04,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:04,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:04,961 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:04,962 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:04,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756606914] [2022-03-01 16:29:04,962 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756606914] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:29:04,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753060397] [2022-03-01 16:29:04,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:29:04,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:04,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:29:04,963 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:29:04,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2022-03-01 16:29:05,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 16:29:05,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:29:05,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 16:29:05,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:29:05,160 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:05,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:29:05,269 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:05,270 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753060397] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:29:05,270 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:29:05,270 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-01 16:29:05,270 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461236613] [2022-03-01 16:29:05,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:29:05,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-01 16:29:05,270 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:05,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-01 16:29:05,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-03-01 16:29:05,270 INFO L87 Difference]: Start difference. First operand 11773 states and 34763 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:05,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:05,684 INFO L93 Difference]: Finished difference Result 12670 states and 37013 transitions. [2022-03-01 16:29:05,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-01 16:29:05,685 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-01 16:29:05,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:05,706 INFO L225 Difference]: With dead ends: 12670 [2022-03-01 16:29:05,707 INFO L226 Difference]: Without dead ends: 12634 [2022-03-01 16:29:05,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=282, Invalid=978, Unknown=0, NotChecked=0, Total=1260 [2022-03-01 16:29:05,707 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 205 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:05,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 1158 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 16:29:05,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12634 states. [2022-03-01 16:29:05,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12634 to 11469. [2022-03-01 16:29:05,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11469 states, 11468 states have (on average 2.9510812696198117) internal successors, (33843), 11468 states have internal predecessors, (33843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:05,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11469 states to 11469 states and 33843 transitions. [2022-03-01 16:29:05,895 INFO L78 Accepts]: Start accepts. Automaton has 11469 states and 33843 transitions. Word has length 74 [2022-03-01 16:29:05,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:05,896 INFO L470 AbstractCegarLoop]: Abstraction has 11469 states and 33843 transitions. [2022-03-01 16:29:05,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:05,896 INFO L276 IsEmpty]: Start isEmpty. Operand 11469 states and 33843 transitions. [2022-03-01 16:29:05,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-01 16:29:05,911 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:05,911 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:05,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Ended with exit code 0 [2022-03-01 16:29:06,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2022-03-01 16:29:06,112 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:06,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:06,112 INFO L85 PathProgramCache]: Analyzing trace with hash -2118918771, now seen corresponding path program 148 times [2022-03-01 16:29:06,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:06,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473136540] [2022-03-01 16:29:06,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:06,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:06,148 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:06,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473136540] [2022-03-01 16:29:06,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473136540] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:29:06,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737594030] [2022-03-01 16:29:06,149 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:29:06,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:06,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:29:06,150 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:29:06,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2022-03-01 16:29:06,270 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:29:06,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:29:06,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 16:29:06,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:29:06,346 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:06,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:29:06,455 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:06,455 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737594030] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:29:06,456 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:29:06,456 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-01 16:29:06,456 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27098242] [2022-03-01 16:29:06,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:29:06,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-01 16:29:06,456 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:06,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-01 16:29:06,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-03-01 16:29:06,456 INFO L87 Difference]: Start difference. First operand 11469 states and 33843 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:06,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:06,800 INFO L93 Difference]: Finished difference Result 12266 states and 35915 transitions. [2022-03-01 16:29:06,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 16:29:06,800 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-01 16:29:06,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:06,823 INFO L225 Difference]: With dead ends: 12266 [2022-03-01 16:29:06,823 INFO L226 Difference]: Without dead ends: 12230 [2022-03-01 16:29:06,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2022-03-01 16:29:06,824 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 219 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:06,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 991 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 16:29:06,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12230 states. [2022-03-01 16:29:06,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12230 to 11513. [2022-03-01 16:29:06,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11513 states, 11512 states have (on average 2.95135510771369) internal successors, (33976), 11512 states have internal predecessors, (33976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:07,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11513 states to 11513 states and 33976 transitions. [2022-03-01 16:29:07,021 INFO L78 Accepts]: Start accepts. Automaton has 11513 states and 33976 transitions. Word has length 74 [2022-03-01 16:29:07,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:07,021 INFO L470 AbstractCegarLoop]: Abstraction has 11513 states and 33976 transitions. [2022-03-01 16:29:07,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:07,021 INFO L276 IsEmpty]: Start isEmpty. Operand 11513 states and 33976 transitions. [2022-03-01 16:29:07,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-01 16:29:07,037 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:07,037 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:07,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Forceful destruction successful, exit code 0 [2022-03-01 16:29:07,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:07,237 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:07,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:07,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1069541713, now seen corresponding path program 149 times [2022-03-01 16:29:07,237 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:07,238 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731040496] [2022-03-01 16:29:07,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:07,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:07,272 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:07,272 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:07,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731040496] [2022-03-01 16:29:07,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731040496] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:29:07,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418080488] [2022-03-01 16:29:07,272 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:29:07,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:07,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:29:07,274 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:29:07,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2022-03-01 16:29:07,395 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 16:29:07,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:29:07,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 16:29:07,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:29:07,472 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:07,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:29:07,581 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:07,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418080488] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:29:07,581 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:29:07,581 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-01 16:29:07,581 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077793701] [2022-03-01 16:29:07,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:29:07,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-01 16:29:07,583 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:07,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-01 16:29:07,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-01 16:29:07,584 INFO L87 Difference]: Start difference. First operand 11513 states and 33976 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:08,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:08,042 INFO L93 Difference]: Finished difference Result 12402 states and 36248 transitions. [2022-03-01 16:29:08,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 16:29:08,043 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-01 16:29:08,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:08,066 INFO L225 Difference]: With dead ends: 12402 [2022-03-01 16:29:08,066 INFO L226 Difference]: Without dead ends: 12366 [2022-03-01 16:29:08,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 145 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=595, Invalid=1475, Unknown=0, NotChecked=0, Total=2070 [2022-03-01 16:29:08,066 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 337 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:08,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 1014 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 16:29:08,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12366 states. [2022-03-01 16:29:08,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12366 to 11481. [2022-03-01 16:29:08,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11481 states, 11480 states have (on average 2.9505226480836235) internal successors, (33872), 11480 states have internal predecessors, (33872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:08,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11481 states to 11481 states and 33872 transitions. [2022-03-01 16:29:08,297 INFO L78 Accepts]: Start accepts. Automaton has 11481 states and 33872 transitions. Word has length 74 [2022-03-01 16:29:08,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:08,297 INFO L470 AbstractCegarLoop]: Abstraction has 11481 states and 33872 transitions. [2022-03-01 16:29:08,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:08,298 INFO L276 IsEmpty]: Start isEmpty. Operand 11481 states and 33872 transitions. [2022-03-01 16:29:08,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-01 16:29:08,313 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:08,313 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:08,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Forceful destruction successful, exit code 0 [2022-03-01 16:29:08,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable181 [2022-03-01 16:29:08,513 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:08,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:08,514 INFO L85 PathProgramCache]: Analyzing trace with hash -374564563, now seen corresponding path program 150 times [2022-03-01 16:29:08,514 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:08,514 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658519443] [2022-03-01 16:29:08,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:08,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:08,548 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:08,548 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:08,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658519443] [2022-03-01 16:29:08,548 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658519443] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:29:08,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238779043] [2022-03-01 16:29:08,548 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:29:08,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:08,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:29:08,549 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:29:08,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2022-03-01 16:29:08,672 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 16:29:08,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:29:08,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 16:29:08,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:29:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:08,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:29:08,844 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:08,844 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238779043] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:29:08,844 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:29:08,845 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-03-01 16:29:08,845 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669264518] [2022-03-01 16:29:08,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:29:08,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-01 16:29:08,845 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:08,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-01 16:29:08,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-03-01 16:29:08,845 INFO L87 Difference]: Start difference. First operand 11481 states and 33872 transitions. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:09,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:09,101 INFO L93 Difference]: Finished difference Result 12346 states and 36137 transitions. [2022-03-01 16:29:09,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 16:29:09,101 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-01 16:29:09,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:09,125 INFO L225 Difference]: With dead ends: 12346 [2022-03-01 16:29:09,125 INFO L226 Difference]: Without dead ends: 12298 [2022-03-01 16:29:09,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 147 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=249, Invalid=507, Unknown=0, NotChecked=0, Total=756 [2022-03-01 16:29:09,125 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 270 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:09,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 824 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:29:09,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12298 states. [2022-03-01 16:29:09,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12298 to 10885. [2022-03-01 16:29:09,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10885 states, 10884 states have (on average 2.9546122748989343) internal successors, (32158), 10884 states have internal predecessors, (32158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:09,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10885 states to 10885 states and 32158 transitions. [2022-03-01 16:29:09,299 INFO L78 Accepts]: Start accepts. Automaton has 10885 states and 32158 transitions. Word has length 74 [2022-03-01 16:29:09,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:09,299 INFO L470 AbstractCegarLoop]: Abstraction has 10885 states and 32158 transitions. [2022-03-01 16:29:09,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:09,299 INFO L276 IsEmpty]: Start isEmpty. Operand 10885 states and 32158 transitions. [2022-03-01 16:29:09,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-01 16:29:09,313 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:09,314 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:09,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Forceful destruction successful, exit code 0 [2022-03-01 16:29:09,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:09,514 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:09,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:09,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1326088179, now seen corresponding path program 151 times [2022-03-01 16:29:09,514 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:09,514 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986999896] [2022-03-01 16:29:09,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:09,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:09,549 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:09,549 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:09,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986999896] [2022-03-01 16:29:09,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986999896] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:29:09,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051642261] [2022-03-01 16:29:09,549 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:29:09,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:09,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:29:09,551 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:29:09,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2022-03-01 16:29:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:09,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 16:29:09,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:29:09,745 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:09,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:29:09,852 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:09,852 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051642261] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:29:09,852 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:29:09,852 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-01 16:29:09,852 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230364241] [2022-03-01 16:29:09,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:29:09,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-01 16:29:09,852 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:09,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-01 16:29:09,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-03-01 16:29:09,853 INFO L87 Difference]: Start difference. First operand 10885 states and 32158 transitions. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:10,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:10,142 INFO L93 Difference]: Finished difference Result 12036 states and 35091 transitions. [2022-03-01 16:29:10,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 16:29:10,142 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-01 16:29:10,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:10,163 INFO L225 Difference]: With dead ends: 12036 [2022-03-01 16:29:10,163 INFO L226 Difference]: Without dead ends: 12036 [2022-03-01 16:29:10,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=241, Invalid=571, Unknown=0, NotChecked=0, Total=812 [2022-03-01 16:29:10,163 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 314 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:10,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 807 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:29:10,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12036 states. [2022-03-01 16:29:10,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12036 to 10669. [2022-03-01 16:29:10,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 2.9501312335958003) internal successors, (31472), 10668 states have internal predecessors, (31472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:10,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 31472 transitions. [2022-03-01 16:29:10,335 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 31472 transitions. Word has length 74 [2022-03-01 16:29:10,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:10,335 INFO L470 AbstractCegarLoop]: Abstraction has 10669 states and 31472 transitions. [2022-03-01 16:29:10,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:10,335 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 31472 transitions. [2022-03-01 16:29:10,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:29:10,350 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:10,350 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:10,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Ended with exit code 0 [2022-03-01 16:29:10,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable183 [2022-03-01 16:29:10,550 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:10,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:10,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1482324071, now seen corresponding path program 152 times [2022-03-01 16:29:10,551 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:10,551 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391985054] [2022-03-01 16:29:10,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:10,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:10,709 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:10,709 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:10,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391985054] [2022-03-01 16:29:10,710 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391985054] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:29:10,710 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083188680] [2022-03-01 16:29:10,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:29:10,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:10,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:29:10,711 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:29:10,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2022-03-01 16:29:10,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:29:10,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:29:10,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-01 16:29:10,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:29:11,157 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:11,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:29:11,832 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:11,832 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083188680] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:29:11,832 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:29:11,833 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-01 16:29:11,833 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362616967] [2022-03-01 16:29:11,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:29:11,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-01 16:29:11,833 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:11,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-01 16:29:11,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1531, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:29:11,833 INFO L87 Difference]: Start difference. First operand 10669 states and 31472 transitions. Second operand has 42 states, 42 states have (on average 2.9761904761904763) internal successors, (125), 42 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:13,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:13,479 INFO L93 Difference]: Finished difference Result 12099 states and 35409 transitions. [2022-03-01 16:29:13,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-01 16:29:13,479 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.9761904761904763) internal successors, (125), 42 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:29:13,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:13,500 INFO L225 Difference]: With dead ends: 12099 [2022-03-01 16:29:13,500 INFO L226 Difference]: Without dead ends: 11964 [2022-03-01 16:29:13,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2442 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1221, Invalid=7151, Unknown=0, NotChecked=0, Total=8372 [2022-03-01 16:29:13,502 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 527 mSDsluCounter, 3061 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 3125 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:13,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [527 Valid, 3125 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:29:13,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11964 states. [2022-03-01 16:29:13,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11964 to 10721. [2022-03-01 16:29:13,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10721 states, 10720 states have (on average 2.9484141791044776) internal successors, (31607), 10720 states have internal predecessors, (31607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:13,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10721 states to 10721 states and 31607 transitions. [2022-03-01 16:29:13,668 INFO L78 Accepts]: Start accepts. Automaton has 10721 states and 31607 transitions. Word has length 78 [2022-03-01 16:29:13,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:13,668 INFO L470 AbstractCegarLoop]: Abstraction has 10721 states and 31607 transitions. [2022-03-01 16:29:13,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.9761904761904763) internal successors, (125), 42 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:13,668 INFO L276 IsEmpty]: Start isEmpty. Operand 10721 states and 31607 transitions. [2022-03-01 16:29:13,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:29:13,682 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:13,682 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:13,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Ended with exit code 0 [2022-03-01 16:29:13,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,153 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:13,882 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:13,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:13,883 INFO L85 PathProgramCache]: Analyzing trace with hash 2093402461, now seen corresponding path program 153 times [2022-03-01 16:29:13,883 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:13,883 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068121742] [2022-03-01 16:29:13,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:13,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:14,035 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:14,035 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:14,035 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068121742] [2022-03-01 16:29:14,035 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068121742] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:29:14,035 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119186685] [2022-03-01 16:29:14,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:29:14,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:14,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:29:14,036 INFO L229 MonitoredProcess]: Starting monitored process 154 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:29:14,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2022-03-01 16:29:14,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-01 16:29:14,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:29:14,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:29:14,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:29:14,439 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:29:14,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:29:14,770 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:29:14,770 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119186685] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:29:14,770 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:29:14,770 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-01 16:29:14,770 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186279818] [2022-03-01 16:29:14,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:29:14,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-01 16:29:14,770 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:14,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-01 16:29:14,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1202, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 16:29:14,771 INFO L87 Difference]: Start difference. First operand 10721 states and 31607 transitions. Second operand has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:17,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:17,205 INFO L93 Difference]: Finished difference Result 11808 states and 34568 transitions. [2022-03-01 16:29:17,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-03-01 16:29:17,205 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:29:17,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:17,226 INFO L225 Difference]: With dead ends: 11808 [2022-03-01 16:29:17,227 INFO L226 Difference]: Without dead ends: 11569 [2022-03-01 16:29:17,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4614 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1862, Invalid=13144, Unknown=0, NotChecked=0, Total=15006 [2022-03-01 16:29:17,228 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 546 mSDsluCounter, 3951 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 4042 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:17,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [546 Valid, 4042 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1853 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:29:17,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11569 states. [2022-03-01 16:29:17,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11569 to 10285. [2022-03-01 16:29:17,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10285 states, 10284 states have (on average 2.899649941656943) internal successors, (29820), 10284 states have internal predecessors, (29820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:17,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10285 states to 10285 states and 29820 transitions. [2022-03-01 16:29:17,381 INFO L78 Accepts]: Start accepts. Automaton has 10285 states and 29820 transitions. Word has length 78 [2022-03-01 16:29:17,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:17,381 INFO L470 AbstractCegarLoop]: Abstraction has 10285 states and 29820 transitions. [2022-03-01 16:29:17,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:17,381 INFO L276 IsEmpty]: Start isEmpty. Operand 10285 states and 29820 transitions. [2022-03-01 16:29:17,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:29:17,394 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:17,394 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:17,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Forceful destruction successful, exit code 0 [2022-03-01 16:29:17,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,154 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:17,594 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:17,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:17,595 INFO L85 PathProgramCache]: Analyzing trace with hash -926819967, now seen corresponding path program 154 times [2022-03-01 16:29:17,595 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:17,595 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725153656] [2022-03-01 16:29:17,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:17,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:17,770 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:17,770 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:17,770 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725153656] [2022-03-01 16:29:17,770 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725153656] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:29:17,770 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426014711] [2022-03-01 16:29:17,770 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:29:17,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:17,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:29:17,771 INFO L229 MonitoredProcess]: Starting monitored process 155 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:29:17,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2022-03-01 16:29:17,896 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:29:17,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:29:17,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 16:29:17,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:29:18,297 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:18,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:29:18,812 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:18,813 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426014711] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:29:18,813 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:29:18,813 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2022-03-01 16:29:18,813 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442339659] [2022-03-01 16:29:18,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:29:18,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-01 16:29:18,813 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:18,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-01 16:29:18,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1801, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 16:29:18,814 INFO L87 Difference]: Start difference. First operand 10285 states and 29820 transitions. Second operand has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:21,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:21,224 INFO L93 Difference]: Finished difference Result 12424 states and 35711 transitions. [2022-03-01 16:29:21,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-01 16:29:21,225 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:29:21,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:21,244 INFO L225 Difference]: With dead ends: 12424 [2022-03-01 16:29:21,244 INFO L226 Difference]: Without dead ends: 12322 [2022-03-01 16:29:21,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4013 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1765, Invalid=11807, Unknown=0, NotChecked=0, Total=13572 [2022-03-01 16:29:21,245 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 776 mSDsluCounter, 3439 mSDsCounter, 0 mSdLazyCounter, 1771 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 3494 SdHoareTripleChecker+Invalid, 1928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:21,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [776 Valid, 3494 Invalid, 1928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1771 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:29:21,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12322 states. [2022-03-01 16:29:21,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12322 to 10357. [2022-03-01 16:29:21,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10357 states, 10356 states have (on average 2.898609501738123) internal successors, (30018), 10356 states have internal predecessors, (30018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:21,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10357 states to 10357 states and 30018 transitions. [2022-03-01 16:29:21,400 INFO L78 Accepts]: Start accepts. Automaton has 10357 states and 30018 transitions. Word has length 78 [2022-03-01 16:29:21,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:21,400 INFO L470 AbstractCegarLoop]: Abstraction has 10357 states and 30018 transitions. [2022-03-01 16:29:21,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:21,401 INFO L276 IsEmpty]: Start isEmpty. Operand 10357 states and 30018 transitions. [2022-03-01 16:29:21,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:29:21,414 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:21,414 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:21,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Ended with exit code 0 [2022-03-01 16:29:21,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:21,615 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:21,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:21,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1986671687, now seen corresponding path program 155 times [2022-03-01 16:29:21,615 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:21,615 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893415949] [2022-03-01 16:29:21,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:21,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:21,767 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:21,767 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:21,767 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893415949] [2022-03-01 16:29:21,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893415949] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:29:21,767 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202561073] [2022-03-01 16:29:21,767 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:29:21,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:21,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:29:21,769 INFO L229 MonitoredProcess]: Starting monitored process 156 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:29:21,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2022-03-01 16:29:21,892 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-01 16:29:21,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:29:21,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:29:21,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:29:22,172 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:29:22,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:29:22,519 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:29:22,519 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202561073] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:29:22,519 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:29:22,519 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-01 16:29:22,519 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023744118] [2022-03-01 16:29:22,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:29:22,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-01 16:29:22,519 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:22,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-01 16:29:22,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1191, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 16:29:22,520 INFO L87 Difference]: Start difference. First operand 10357 states and 30018 transitions. Second operand has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:24,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:24,723 INFO L93 Difference]: Finished difference Result 11180 states and 32193 transitions. [2022-03-01 16:29:24,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-03-01 16:29:24,723 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:29:24,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:24,742 INFO L225 Difference]: With dead ends: 11180 [2022-03-01 16:29:24,742 INFO L226 Difference]: Without dead ends: 11077 [2022-03-01 16:29:24,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4372 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2057, Invalid=11985, Unknown=0, NotChecked=0, Total=14042 [2022-03-01 16:29:24,744 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 728 mSDsluCounter, 3273 mSDsCounter, 0 mSdLazyCounter, 1612 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 3356 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:24,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 3356 Invalid, 1764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1612 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:29:24,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11077 states. [2022-03-01 16:29:24,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11077 to 9941. [2022-03-01 16:29:24,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9941 states, 9940 states have (on average 2.8867203219315893) internal successors, (28694), 9940 states have internal predecessors, (28694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:24,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9941 states to 9941 states and 28694 transitions. [2022-03-01 16:29:24,907 INFO L78 Accepts]: Start accepts. Automaton has 9941 states and 28694 transitions. Word has length 78 [2022-03-01 16:29:24,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:24,907 INFO L470 AbstractCegarLoop]: Abstraction has 9941 states and 28694 transitions. [2022-03-01 16:29:24,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:24,907 INFO L276 IsEmpty]: Start isEmpty. Operand 9941 states and 28694 transitions. [2022-03-01 16:29:24,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:29:24,919 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:24,919 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:24,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Ended with exit code 0 [2022-03-01 16:29:25,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,156 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:25,119 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:25,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:25,120 INFO L85 PathProgramCache]: Analyzing trace with hash -2025068431, now seen corresponding path program 156 times [2022-03-01 16:29:25,120 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:25,120 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841048501] [2022-03-01 16:29:25,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:25,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:25,307 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:25,307 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:25,307 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841048501] [2022-03-01 16:29:25,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841048501] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:29:25,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576838536] [2022-03-01 16:29:25,308 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:29:25,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:25,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:29:25,309 INFO L229 MonitoredProcess]: Starting monitored process 157 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:29:25,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2022-03-01 16:29:25,435 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 16:29:25,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:29:25,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-01 16:29:25,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:29:25,763 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:25,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:29:26,401 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:26,401 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576838536] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:29:26,401 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:29:26,401 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-01 16:29:26,401 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409605758] [2022-03-01 16:29:26,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:29:26,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-01 16:29:26,402 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:26,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-01 16:29:26,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1521, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:29:26,402 INFO L87 Difference]: Start difference. First operand 9941 states and 28694 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:28,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:28,845 INFO L93 Difference]: Finished difference Result 12896 states and 36946 transitions. [2022-03-01 16:29:28,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-03-01 16:29:28,845 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:29:28,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:28,868 INFO L225 Difference]: With dead ends: 12896 [2022-03-01 16:29:28,868 INFO L226 Difference]: Without dead ends: 12810 [2022-03-01 16:29:28,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3448 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1600, Invalid=9956, Unknown=0, NotChecked=0, Total=11556 [2022-03-01 16:29:28,870 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 594 mSDsluCounter, 3408 mSDsCounter, 0 mSdLazyCounter, 1908 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 3484 SdHoareTripleChecker+Invalid, 2018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:28,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 3484 Invalid, 2018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1908 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:29:28,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12810 states. [2022-03-01 16:29:29,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12810 to 10041. [2022-03-01 16:29:29,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10041 states, 10040 states have (on average 2.885358565737052) internal successors, (28969), 10040 states have internal predecessors, (28969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:29,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10041 states to 10041 states and 28969 transitions. [2022-03-01 16:29:29,040 INFO L78 Accepts]: Start accepts. Automaton has 10041 states and 28969 transitions. Word has length 78 [2022-03-01 16:29:29,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:29,040 INFO L470 AbstractCegarLoop]: Abstraction has 10041 states and 28969 transitions. [2022-03-01 16:29:29,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:29,041 INFO L276 IsEmpty]: Start isEmpty. Operand 10041 states and 28969 transitions. [2022-03-01 16:29:29,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:29:29,053 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:29,053 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:29,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Ended with exit code 0 [2022-03-01 16:29:29,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2022-03-01 16:29:29,254 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:29,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:29,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1304210485, now seen corresponding path program 157 times [2022-03-01 16:29:29,254 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:29,254 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521590555] [2022-03-01 16:29:29,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:29,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:29,412 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:29,413 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:29,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521590555] [2022-03-01 16:29:29,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521590555] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:29:29,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566696444] [2022-03-01 16:29:29,413 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:29:29,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:29,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:29:29,414 INFO L229 MonitoredProcess]: Starting monitored process 158 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:29:29,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2022-03-01 16:29:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:29,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-01 16:29:29,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:29:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:29,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:29:30,514 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:30,515 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566696444] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:29:30,515 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:29:30,515 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-01 16:29:30,515 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745815111] [2022-03-01 16:29:30,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:29:30,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-01 16:29:30,515 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:30,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-01 16:29:30,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1519, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:29:30,516 INFO L87 Difference]: Start difference. First operand 10041 states and 28969 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:33,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:33,177 INFO L93 Difference]: Finished difference Result 13244 states and 38083 transitions. [2022-03-01 16:29:33,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-03-01 16:29:33,177 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:29:33,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:33,200 INFO L225 Difference]: With dead ends: 13244 [2022-03-01 16:29:33,201 INFO L226 Difference]: Without dead ends: 13158 [2022-03-01 16:29:33,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3981 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1819, Invalid=10837, Unknown=0, NotChecked=0, Total=12656 [2022-03-01 16:29:33,202 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 721 mSDsluCounter, 3554 mSDsCounter, 0 mSdLazyCounter, 2049 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:33,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [721 Valid, 3647 Invalid, 2176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2049 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:29:33,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13158 states. [2022-03-01 16:29:33,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13158 to 9961. [2022-03-01 16:29:33,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9961 states, 9960 states have (on average 2.88644578313253) internal successors, (28749), 9960 states have internal predecessors, (28749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:33,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9961 states to 9961 states and 28749 transitions. [2022-03-01 16:29:33,364 INFO L78 Accepts]: Start accepts. Automaton has 9961 states and 28749 transitions. Word has length 78 [2022-03-01 16:29:33,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:33,364 INFO L470 AbstractCegarLoop]: Abstraction has 9961 states and 28749 transitions. [2022-03-01 16:29:33,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:33,364 INFO L276 IsEmpty]: Start isEmpty. Operand 9961 states and 28749 transitions. [2022-03-01 16:29:33,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:29:33,376 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:33,376 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:33,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Ended with exit code 0 [2022-03-01 16:29:33,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2022-03-01 16:29:33,577 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:33,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:33,577 INFO L85 PathProgramCache]: Analyzing trace with hash 460003775, now seen corresponding path program 158 times [2022-03-01 16:29:33,577 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:33,577 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187022635] [2022-03-01 16:29:33,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:33,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:33,752 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:33,752 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:33,752 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187022635] [2022-03-01 16:29:33,752 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187022635] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:29:33,752 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466282453] [2022-03-01 16:29:33,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:29:33,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:33,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:29:33,753 INFO L229 MonitoredProcess]: Starting monitored process 159 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:29:33,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2022-03-01 16:29:33,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:29:33,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:29:33,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-01 16:29:33,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:29:34,219 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:34,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:29:34,905 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:34,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466282453] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:29:34,905 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:29:34,905 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-01 16:29:34,905 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199463012] [2022-03-01 16:29:34,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:29:34,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-01 16:29:34,906 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:34,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-01 16:29:34,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1534, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:29:34,906 INFO L87 Difference]: Start difference. First operand 9961 states and 28749 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:36,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:36,839 INFO L93 Difference]: Finished difference Result 11948 states and 34086 transitions. [2022-03-01 16:29:36,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-01 16:29:36,839 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:29:36,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:36,860 INFO L225 Difference]: With dead ends: 11948 [2022-03-01 16:29:36,860 INFO L226 Difference]: Without dead ends: 11862 [2022-03-01 16:29:36,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2365 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1115, Invalid=7257, Unknown=0, NotChecked=0, Total=8372 [2022-03-01 16:29:36,861 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 476 mSDsluCounter, 4063 mSDsCounter, 0 mSdLazyCounter, 2067 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 4111 SdHoareTripleChecker+Invalid, 2147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:36,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 4111 Invalid, 2147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2067 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:29:36,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11862 states. [2022-03-01 16:29:36,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11862 to 10057. [2022-03-01 16:29:37,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10057 states, 10056 states have (on average 2.885938743038982) internal successors, (29021), 10056 states have internal predecessors, (29021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:37,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10057 states to 10057 states and 29021 transitions. [2022-03-01 16:29:37,027 INFO L78 Accepts]: Start accepts. Automaton has 10057 states and 29021 transitions. Word has length 78 [2022-03-01 16:29:37,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:37,027 INFO L470 AbstractCegarLoop]: Abstraction has 10057 states and 29021 transitions. [2022-03-01 16:29:37,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:37,027 INFO L276 IsEmpty]: Start isEmpty. Operand 10057 states and 29021 transitions. [2022-03-01 16:29:37,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:29:37,040 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:37,040 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:37,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Forceful destruction successful, exit code 0 [2022-03-01 16:29:37,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,159 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:37,244 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:37,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:37,244 INFO L85 PathProgramCache]: Analyzing trace with hash -638244689, now seen corresponding path program 159 times [2022-03-01 16:29:37,245 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:37,245 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469307745] [2022-03-01 16:29:37,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:37,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:37,414 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:37,414 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:37,414 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469307745] [2022-03-01 16:29:37,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469307745] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:29:37,414 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125744529] [2022-03-01 16:29:37,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:29:37,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:37,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:29:37,415 INFO L229 MonitoredProcess]: Starting monitored process 160 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:29:37,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2022-03-01 16:29:37,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 16:29:37,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:29:37,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:29:37,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:29:37,840 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:29:37,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:29:38,183 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:29:38,183 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125744529] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:29:38,183 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:29:38,183 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-01 16:29:38,183 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732037447] [2022-03-01 16:29:38,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:29:38,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-01 16:29:38,184 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:38,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-01 16:29:38,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1185, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 16:29:38,184 INFO L87 Difference]: Start difference. First operand 10057 states and 29021 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:40,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:40,517 INFO L93 Difference]: Finished difference Result 10939 states and 31356 transitions. [2022-03-01 16:29:40,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-03-01 16:29:40,518 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:29:40,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:40,536 INFO L225 Difference]: With dead ends: 10939 [2022-03-01 16:29:40,536 INFO L226 Difference]: Without dead ends: 10853 [2022-03-01 16:29:40,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4774 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2099, Invalid=13153, Unknown=0, NotChecked=0, Total=15252 [2022-03-01 16:29:40,537 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 700 mSDsluCounter, 3631 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 3724 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:40,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 3724 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:29:40,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10853 states. [2022-03-01 16:29:40,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10853 to 9813. [2022-03-01 16:29:40,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9813 states, 9812 states have (on average 2.881165919282511) internal successors, (28270), 9812 states have internal predecessors, (28270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:40,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9813 states to 9813 states and 28270 transitions. [2022-03-01 16:29:40,690 INFO L78 Accepts]: Start accepts. Automaton has 9813 states and 28270 transitions. Word has length 78 [2022-03-01 16:29:40,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:40,691 INFO L470 AbstractCegarLoop]: Abstraction has 9813 states and 28270 transitions. [2022-03-01 16:29:40,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:40,691 INFO L276 IsEmpty]: Start isEmpty. Operand 9813 states and 28270 transitions. [2022-03-01 16:29:40,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:29:40,704 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:40,704 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:40,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Forceful destruction successful, exit code 0 [2022-03-01 16:29:40,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,160 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:40,905 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:40,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:40,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1603933069, now seen corresponding path program 160 times [2022-03-01 16:29:40,905 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:40,905 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629730070] [2022-03-01 16:29:40,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:40,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:41,065 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:41,065 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:41,065 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629730070] [2022-03-01 16:29:41,065 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629730070] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:29:41,065 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88027380] [2022-03-01 16:29:41,065 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:29:41,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:41,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:29:41,066 INFO L229 MonitoredProcess]: Starting monitored process 161 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:29:41,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2022-03-01 16:29:41,194 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:29:41,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:29:41,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 16:29:41,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:29:41,577 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:41,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:29:42,112 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:42,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88027380] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:29:42,112 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:29:42,112 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2022-03-01 16:29:42,112 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15428953] [2022-03-01 16:29:42,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:29:42,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-01 16:29:42,113 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:42,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-01 16:29:42,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1810, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 16:29:42,113 INFO L87 Difference]: Start difference. First operand 9813 states and 28270 transitions. Second operand has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:45,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:45,563 INFO L93 Difference]: Finished difference Result 12362 states and 35437 transitions. [2022-03-01 16:29:45,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-03-01 16:29:45,564 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:29:45,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:45,583 INFO L225 Difference]: With dead ends: 12362 [2022-03-01 16:29:45,584 INFO L226 Difference]: Without dead ends: 12276 [2022-03-01 16:29:45,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7188 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2692, Invalid=19360, Unknown=0, NotChecked=0, Total=22052 [2022-03-01 16:29:45,585 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 1182 mSDsluCounter, 4254 mSDsCounter, 0 mSdLazyCounter, 2150 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 4279 SdHoareTripleChecker+Invalid, 2382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 2150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:45,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1182 Valid, 4279 Invalid, 2382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 2150 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:29:45,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12276 states. [2022-03-01 16:29:45,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12276 to 10205. [2022-03-01 16:29:45,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10205 states, 10204 states have (on average 2.8808310466483733) internal successors, (29396), 10204 states have internal predecessors, (29396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:45,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10205 states to 10205 states and 29396 transitions. [2022-03-01 16:29:45,757 INFO L78 Accepts]: Start accepts. Automaton has 10205 states and 29396 transitions. Word has length 78 [2022-03-01 16:29:45,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:45,757 INFO L470 AbstractCegarLoop]: Abstraction has 10205 states and 29396 transitions. [2022-03-01 16:29:45,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:45,757 INFO L276 IsEmpty]: Start isEmpty. Operand 10205 states and 29396 transitions. [2022-03-01 16:29:45,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:29:45,770 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:45,770 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:45,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Forceful destruction successful, exit code 0 [2022-03-01 16:29:45,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,161 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:45,971 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:45,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:45,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1563789765, now seen corresponding path program 161 times [2022-03-01 16:29:45,971 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:45,971 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3719771] [2022-03-01 16:29:45,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:45,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:46,131 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:46,132 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:46,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3719771] [2022-03-01 16:29:46,132 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3719771] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:29:46,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404499480] [2022-03-01 16:29:46,132 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:29:46,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:46,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:29:46,133 INFO L229 MonitoredProcess]: Starting monitored process 162 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:29:46,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Waiting until timeout for monitored process [2022-03-01 16:29:46,263 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-01 16:29:46,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:29:46,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:29:46,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:29:46,559 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:29:46,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:29:46,932 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:29:46,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404499480] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:29:46,932 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:29:46,933 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-01 16:29:46,933 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074974840] [2022-03-01 16:29:46,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:29:46,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-01 16:29:46,933 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:46,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-01 16:29:46,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1199, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 16:29:46,933 INFO L87 Difference]: Start difference. First operand 10205 states and 29396 transitions. Second operand has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:48,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:48,803 INFO L93 Difference]: Finished difference Result 11576 states and 33122 transitions. [2022-03-01 16:29:48,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-03-01 16:29:48,804 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:29:48,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:48,822 INFO L225 Difference]: With dead ends: 11576 [2022-03-01 16:29:48,822 INFO L226 Difference]: Without dead ends: 11469 [2022-03-01 16:29:48,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3105 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1345, Invalid=9367, Unknown=0, NotChecked=0, Total=10712 [2022-03-01 16:29:48,823 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 443 mSDsluCounter, 3562 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 3649 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:48,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 3649 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1560 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:29:48,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11469 states. [2022-03-01 16:29:48,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11469 to 10457. [2022-03-01 16:29:48,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10457 states, 10456 states have (on average 2.861610558530987) internal successors, (29921), 10456 states have internal predecessors, (29921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:49,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10457 states to 10457 states and 29921 transitions. [2022-03-01 16:29:49,011 INFO L78 Accepts]: Start accepts. Automaton has 10457 states and 29921 transitions. Word has length 78 [2022-03-01 16:29:49,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:49,011 INFO L470 AbstractCegarLoop]: Abstraction has 10457 states and 29921 transitions. [2022-03-01 16:29:49,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:49,012 INFO L276 IsEmpty]: Start isEmpty. Operand 10457 states and 29921 transitions. [2022-03-01 16:29:49,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:29:49,024 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:49,024 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:49,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Forceful destruction successful, exit code 0 [2022-03-01 16:29:49,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,162 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:49,228 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:49,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:49,229 INFO L85 PathProgramCache]: Analyzing trace with hash 948913081, now seen corresponding path program 162 times [2022-03-01 16:29:49,229 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:49,229 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092190405] [2022-03-01 16:29:49,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:49,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:49,382 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:49,382 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:49,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092190405] [2022-03-01 16:29:49,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092190405] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:29:49,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545279637] [2022-03-01 16:29:49,382 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:29:49,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:49,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:29:49,383 INFO L229 MonitoredProcess]: Starting monitored process 163 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:29:49,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2022-03-01 16:29:49,515 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 16:29:49,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:29:49,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-01 16:29:49,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:29:49,829 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:49,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:29:50,497 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:50,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545279637] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:29:50,497 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:29:50,497 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-01 16:29:50,497 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468557354] [2022-03-01 16:29:50,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:29:50,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-01 16:29:50,497 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:50,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-01 16:29:50,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1554, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:29:50,498 INFO L87 Difference]: Start difference. First operand 10457 states and 29921 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:52,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:52,311 INFO L93 Difference]: Finished difference Result 12144 states and 34460 transitions. [2022-03-01 16:29:52,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-01 16:29:52,311 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:29:52,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:52,333 INFO L225 Difference]: With dead ends: 12144 [2022-03-01 16:29:52,333 INFO L226 Difference]: Without dead ends: 12078 [2022-03-01 16:29:52,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2398 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=995, Invalid=7377, Unknown=0, NotChecked=0, Total=8372 [2022-03-01 16:29:52,334 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 461 mSDsluCounter, 3993 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 4027 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:52,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 4027 Invalid, 1943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1851 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:29:52,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12078 states. [2022-03-01 16:29:52,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12078 to 10461. [2022-03-01 16:29:52,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10461 states, 10460 states have (on average 2.861567877629063) internal successors, (29932), 10460 states have internal predecessors, (29932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:52,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10461 states to 10461 states and 29932 transitions. [2022-03-01 16:29:52,508 INFO L78 Accepts]: Start accepts. Automaton has 10461 states and 29932 transitions. Word has length 78 [2022-03-01 16:29:52,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:52,508 INFO L470 AbstractCegarLoop]: Abstraction has 10461 states and 29932 transitions. [2022-03-01 16:29:52,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:52,508 INFO L276 IsEmpty]: Start isEmpty. Operand 10461 states and 29932 transitions. [2022-03-01 16:29:52,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:29:52,521 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:52,521 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:52,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Forceful destruction successful, exit code 0 [2022-03-01 16:29:52,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2022-03-01 16:29:52,722 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:52,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:52,722 INFO L85 PathProgramCache]: Analyzing trace with hash -206351307, now seen corresponding path program 163 times [2022-03-01 16:29:52,722 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:52,722 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466122614] [2022-03-01 16:29:52,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:52,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:52,881 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:52,881 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:52,881 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466122614] [2022-03-01 16:29:52,881 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466122614] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:29:52,882 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873220454] [2022-03-01 16:29:52,882 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:29:52,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:52,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:29:52,883 INFO L229 MonitoredProcess]: Starting monitored process 164 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:29:52,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Waiting until timeout for monitored process [2022-03-01 16:29:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:53,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-01 16:29:53,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:29:53,374 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:53,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:29:54,025 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:54,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873220454] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:29:54,025 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:29:54,025 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-01 16:29:54,025 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708588657] [2022-03-01 16:29:54,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:29:54,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-01 16:29:54,026 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:54,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-01 16:29:54,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1535, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:29:54,026 INFO L87 Difference]: Start difference. First operand 10461 states and 29932 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:56,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:56,618 INFO L93 Difference]: Finished difference Result 13518 states and 38297 transitions. [2022-03-01 16:29:56,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-03-01 16:29:56,618 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:29:56,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:56,641 INFO L225 Difference]: With dead ends: 13518 [2022-03-01 16:29:56,641 INFO L226 Difference]: Without dead ends: 13440 [2022-03-01 16:29:56,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3711 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1553, Invalid=10657, Unknown=0, NotChecked=0, Total=12210 [2022-03-01 16:29:56,643 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 523 mSDsluCounter, 3874 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 3907 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:56,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 3907 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2118 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:29:56,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13440 states. [2022-03-01 16:29:56,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13440 to 10609. [2022-03-01 16:29:56,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10609 states, 10608 states have (on average 2.8611425339366514) internal successors, (30351), 10608 states have internal predecessors, (30351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:56,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10609 states to 10609 states and 30351 transitions. [2022-03-01 16:29:56,829 INFO L78 Accepts]: Start accepts. Automaton has 10609 states and 30351 transitions. Word has length 78 [2022-03-01 16:29:56,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:56,829 INFO L470 AbstractCegarLoop]: Abstraction has 10609 states and 30351 transitions. [2022-03-01 16:29:56,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:56,829 INFO L276 IsEmpty]: Start isEmpty. Operand 10609 states and 30351 transitions. [2022-03-01 16:29:56,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:29:56,842 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:56,843 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:56,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Ended with exit code 0 [2022-03-01 16:29:57,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,164 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:57,043 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:57,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:57,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1628909515, now seen corresponding path program 164 times [2022-03-01 16:29:57,044 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:57,044 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084539152] [2022-03-01 16:29:57,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:57,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:57,202 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:57,202 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:57,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084539152] [2022-03-01 16:29:57,203 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084539152] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:29:57,203 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090250992] [2022-03-01 16:29:57,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:29:57,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:57,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:29:57,204 INFO L229 MonitoredProcess]: Starting monitored process 165 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:29:57,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Waiting until timeout for monitored process [2022-03-01 16:29:57,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:29:57,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:29:57,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-01 16:29:57,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:29:57,661 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:57,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:29:58,368 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:29:58,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090250992] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:29:58,368 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:29:58,368 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-01 16:29:58,368 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979980784] [2022-03-01 16:29:58,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:29:58,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-01 16:29:58,368 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:58,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-01 16:29:58,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1562, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:29:58,369 INFO L87 Difference]: Start difference. First operand 10609 states and 30351 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:00,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:00,956 INFO L93 Difference]: Finished difference Result 12814 states and 36301 transitions. [2022-03-01 16:30:00,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-03-01 16:30:00,956 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:30:00,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:00,979 INFO L225 Difference]: With dead ends: 12814 [2022-03-01 16:30:00,980 INFO L226 Difference]: Without dead ends: 12748 [2022-03-01 16:30:00,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4148 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1593, Invalid=12213, Unknown=0, NotChecked=0, Total=13806 [2022-03-01 16:30:00,982 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 661 mSDsluCounter, 4318 mSDsCounter, 0 mSdLazyCounter, 2176 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 4335 SdHoareTripleChecker+Invalid, 2337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:00,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 4335 Invalid, 2337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 2176 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:30:00,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12748 states. [2022-03-01 16:30:01,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12748 to 10709. [2022-03-01 16:30:01,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10709 states, 10708 states have (on average 2.860104594695555) internal successors, (30626), 10708 states have internal predecessors, (30626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:01,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10709 states to 10709 states and 30626 transitions. [2022-03-01 16:30:01,178 INFO L78 Accepts]: Start accepts. Automaton has 10709 states and 30626 transitions. Word has length 78 [2022-03-01 16:30:01,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:01,178 INFO L470 AbstractCegarLoop]: Abstraction has 10709 states and 30626 transitions. [2022-03-01 16:30:01,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:01,178 INFO L276 IsEmpty]: Start isEmpty. Operand 10709 states and 30626 transitions. [2022-03-01 16:30:01,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:30:01,192 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:01,192 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:01,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Ended with exit code 0 [2022-03-01 16:30:01,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,165 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:30:01,393 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:01,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:01,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1510793393, now seen corresponding path program 165 times [2022-03-01 16:30:01,393 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:01,393 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119763008] [2022-03-01 16:30:01,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:01,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:01,556 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:01,557 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:01,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119763008] [2022-03-01 16:30:01,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119763008] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:30:01,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116531573] [2022-03-01 16:30:01,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:30:01,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:30:01,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:30:01,558 INFO L229 MonitoredProcess]: Starting monitored process 166 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:30:01,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Waiting until timeout for monitored process [2022-03-01 16:30:01,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 16:30:01,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:30:01,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:30:01,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:30:01,992 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:30:01,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:30:02,354 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:30:02,354 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116531573] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:30:02,354 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:30:02,354 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-01 16:30:02,355 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880038360] [2022-03-01 16:30:02,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:30:02,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-01 16:30:02,355 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:02,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-01 16:30:02,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1183, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 16:30:02,355 INFO L87 Difference]: Start difference. First operand 10709 states and 30626 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:05,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:05,067 INFO L93 Difference]: Finished difference Result 14463 states and 41355 transitions. [2022-03-01 16:30:05,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-03-01 16:30:05,067 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:30:05,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:05,093 INFO L225 Difference]: With dead ends: 14463 [2022-03-01 16:30:05,093 INFO L226 Difference]: Without dead ends: 14385 [2022-03-01 16:30:05,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4950 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1977, Invalid=13773, Unknown=0, NotChecked=0, Total=15750 [2022-03-01 16:30:05,095 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 581 mSDsluCounter, 5165 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 5216 SdHoareTripleChecker+Invalid, 2541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:05,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 5216 Invalid, 2541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:30:05,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14385 states. [2022-03-01 16:30:05,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14385 to 11217. [2022-03-01 16:30:05,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11217 states, 11216 states have (on average 2.8690263908701854) internal successors, (32179), 11216 states have internal predecessors, (32179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:05,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11217 states to 11217 states and 32179 transitions. [2022-03-01 16:30:05,301 INFO L78 Accepts]: Start accepts. Automaton has 11217 states and 32179 transitions. Word has length 78 [2022-03-01 16:30:05,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:05,301 INFO L470 AbstractCegarLoop]: Abstraction has 11217 states and 32179 transitions. [2022-03-01 16:30:05,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:05,301 INFO L276 IsEmpty]: Start isEmpty. Operand 11217 states and 32179 transitions. [2022-03-01 16:30:05,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:30:05,315 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:05,316 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:05,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Forceful destruction successful, exit code 0 [2022-03-01 16:30:05,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,166 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:30:05,516 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:05,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:05,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1726214867, now seen corresponding path program 166 times [2022-03-01 16:30:05,516 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:05,516 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839875541] [2022-03-01 16:30:05,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:05,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:05,678 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:05,678 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:05,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839875541] [2022-03-01 16:30:05,678 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839875541] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:30:05,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272036042] [2022-03-01 16:30:05,678 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:30:05,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:30:05,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:30:05,679 INFO L229 MonitoredProcess]: Starting monitored process 167 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:30:05,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Waiting until timeout for monitored process [2022-03-01 16:30:05,811 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:30:05,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:30:05,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-01 16:30:05,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:30:06,121 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:06,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:30:06,692 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:06,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272036042] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:30:06,692 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:30:06,692 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 40 [2022-03-01 16:30:06,692 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277149088] [2022-03-01 16:30:06,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:30:06,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-01 16:30:06,692 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:06,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-01 16:30:06,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-03-01 16:30:06,693 INFO L87 Difference]: Start difference. First operand 11217 states and 32179 transitions. Second operand has 40 states, 40 states have (on average 3.025) internal successors, (121), 40 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:11,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:11,552 INFO L93 Difference]: Finished difference Result 15620 states and 44125 transitions. [2022-03-01 16:30:11,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-03-01 16:30:11,552 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.025) internal successors, (121), 40 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:30:11,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:11,580 INFO L225 Difference]: With dead ends: 15620 [2022-03-01 16:30:11,580 INFO L226 Difference]: Without dead ends: 15395 [2022-03-01 16:30:11,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 132 SyntacticMatches, 4 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9696 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=3125, Invalid=23935, Unknown=0, NotChecked=0, Total=27060 [2022-03-01 16:30:11,583 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 976 mSDsluCounter, 5097 mSDsCounter, 0 mSdLazyCounter, 2845 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 5058 SdHoareTripleChecker+Invalid, 3052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 2845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:11,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 5058 Invalid, 3052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 2845 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 16:30:11,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15395 states. [2022-03-01 16:30:11,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15395 to 11897. [2022-03-01 16:30:11,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11897 states, 11896 states have (on average 2.8639038332212507) internal successors, (34069), 11896 states have internal predecessors, (34069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:11,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11897 states to 11897 states and 34069 transitions. [2022-03-01 16:30:11,798 INFO L78 Accepts]: Start accepts. Automaton has 11897 states and 34069 transitions. Word has length 78 [2022-03-01 16:30:11,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:11,799 INFO L470 AbstractCegarLoop]: Abstraction has 11897 states and 34069 transitions. [2022-03-01 16:30:11,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.025) internal successors, (121), 40 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:11,799 INFO L276 IsEmpty]: Start isEmpty. Operand 11897 states and 34069 transitions. [2022-03-01 16:30:11,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:30:11,814 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:11,814 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:11,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Ended with exit code 0 [2022-03-01 16:30:12,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,167 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:30:12,014 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:12,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:12,015 INFO L85 PathProgramCache]: Analyzing trace with hash 143966545, now seen corresponding path program 167 times [2022-03-01 16:30:12,015 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:12,015 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101016368] [2022-03-01 16:30:12,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:12,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:12,171 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:12,172 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:12,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101016368] [2022-03-01 16:30:12,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101016368] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:30:12,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994782617] [2022-03-01 16:30:12,172 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:30:12,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:30:12,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:30:12,173 INFO L229 MonitoredProcess]: Starting monitored process 168 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:30:12,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Waiting until timeout for monitored process [2022-03-01 16:30:12,305 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-01 16:30:12,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:30:12,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-01 16:30:12,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:30:12,659 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:12,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:30:13,318 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:13,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994782617] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:30:13,318 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:30:13,318 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-01 16:30:13,318 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518125681] [2022-03-01 16:30:13,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:30:13,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-01 16:30:13,318 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:13,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-01 16:30:13,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:30:13,319 INFO L87 Difference]: Start difference. First operand 11897 states and 34069 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:16,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:16,216 INFO L93 Difference]: Finished difference Result 13940 states and 39519 transitions. [2022-03-01 16:30:16,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-03-01 16:30:16,217 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:30:16,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:16,242 INFO L225 Difference]: With dead ends: 13940 [2022-03-01 16:30:16,242 INFO L226 Difference]: Without dead ends: 13859 [2022-03-01 16:30:16,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4911 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1745, Invalid=13507, Unknown=0, NotChecked=0, Total=15252 [2022-03-01 16:30:16,244 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 741 mSDsluCounter, 5411 mSDsCounter, 0 mSdLazyCounter, 2639 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 5375 SdHoareTripleChecker+Invalid, 2771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:16,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 5375 Invalid, 2771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2639 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 16:30:16,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13859 states. [2022-03-01 16:30:16,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13859 to 12025. [2022-03-01 16:30:16,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12025 states, 12024 states have (on average 2.8660179640718564) internal successors, (34461), 12024 states have internal predecessors, (34461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:16,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12025 states to 12025 states and 34461 transitions. [2022-03-01 16:30:16,438 INFO L78 Accepts]: Start accepts. Automaton has 12025 states and 34461 transitions. Word has length 78 [2022-03-01 16:30:16,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:16,438 INFO L470 AbstractCegarLoop]: Abstraction has 12025 states and 34461 transitions. [2022-03-01 16:30:16,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:16,438 INFO L276 IsEmpty]: Start isEmpty. Operand 12025 states and 34461 transitions. [2022-03-01 16:30:16,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:30:16,453 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:16,454 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:16,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Ended with exit code 0 [2022-03-01 16:30:16,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 168 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2022-03-01 16:30:16,655 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:16,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:16,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1172360911, now seen corresponding path program 168 times [2022-03-01 16:30:16,655 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:16,655 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108449500] [2022-03-01 16:30:16,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:16,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:16,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:16,820 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:16,820 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:16,820 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108449500] [2022-03-01 16:30:16,820 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108449500] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:30:16,820 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484612205] [2022-03-01 16:30:16,820 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:30:16,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:30:16,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:30:16,821 INFO L229 MonitoredProcess]: Starting monitored process 169 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:30:16,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Waiting until timeout for monitored process [2022-03-01 16:30:16,957 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 16:30:16,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:30:16,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:30:16,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:30:17,286 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:30:17,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:30:17,635 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:30:17,635 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484612205] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:30:17,635 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:30:17,635 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-01 16:30:17,635 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597787899] [2022-03-01 16:30:17,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:30:17,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-01 16:30:17,636 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:17,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-01 16:30:17,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 16:30:17,636 INFO L87 Difference]: Start difference. First operand 12025 states and 34461 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:20,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:20,586 INFO L93 Difference]: Finished difference Result 16073 states and 45915 transitions. [2022-03-01 16:30:20,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-03-01 16:30:20,586 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:30:20,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:20,615 INFO L225 Difference]: With dead ends: 16073 [2022-03-01 16:30:20,615 INFO L226 Difference]: Without dead ends: 15949 [2022-03-01 16:30:20,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8543 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3534, Invalid=21588, Unknown=0, NotChecked=0, Total=25122 [2022-03-01 16:30:20,619 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 1001 mSDsluCounter, 3089 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 3174 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:20,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1001 Valid, 3174 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:30:20,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15949 states. [2022-03-01 16:30:20,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15949 to 5553. [2022-03-01 16:30:20,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5553 states, 5552 states have (on average 2.8405979827089336) internal successors, (15771), 5552 states have internal predecessors, (15771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:20,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5553 states to 5553 states and 15771 transitions. [2022-03-01 16:30:20,767 INFO L78 Accepts]: Start accepts. Automaton has 5553 states and 15771 transitions. Word has length 78 [2022-03-01 16:30:20,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:20,767 INFO L470 AbstractCegarLoop]: Abstraction has 5553 states and 15771 transitions. [2022-03-01 16:30:20,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:20,767 INFO L276 IsEmpty]: Start isEmpty. Operand 5553 states and 15771 transitions. [2022-03-01 16:30:20,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:30:20,773 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:20,773 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:20,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Forceful destruction successful, exit code 0 [2022-03-01 16:30:20,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200,169 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:30:20,974 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:20,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:20,974 INFO L85 PathProgramCache]: Analyzing trace with hash 315095993, now seen corresponding path program 169 times [2022-03-01 16:30:20,974 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:20,974 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731915288] [2022-03-01 16:30:20,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:20,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:21,130 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:21,130 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:21,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731915288] [2022-03-01 16:30:21,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731915288] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:30:21,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728923349] [2022-03-01 16:30:21,130 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:30:21,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:30:21,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:30:21,131 INFO L229 MonitoredProcess]: Starting monitored process 170 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:30:21,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Waiting until timeout for monitored process [2022-03-01 16:30:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:21,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-01 16:30:21,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:30:21,563 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:21,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:30:22,284 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:22,285 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728923349] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:30:22,285 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:30:22,285 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2022-03-01 16:30:22,285 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676402841] [2022-03-01 16:30:22,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:30:22,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-01 16:30:22,285 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:22,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-01 16:30:22,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1489, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 16:30:22,286 INFO L87 Difference]: Start difference. First operand 5553 states and 15771 transitions. Second operand has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:27,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:27,937 INFO L93 Difference]: Finished difference Result 8553 states and 23935 transitions. [2022-03-01 16:30:27,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2022-03-01 16:30:27,937 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:30:27,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:27,951 INFO L225 Difference]: With dead ends: 8553 [2022-03-01 16:30:27,951 INFO L226 Difference]: Without dead ends: 8472 [2022-03-01 16:30:27,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 131 SyntacticMatches, 4 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13300 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3909, Invalid=33147, Unknown=0, NotChecked=0, Total=37056 [2022-03-01 16:30:27,955 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 786 mSDsluCounter, 4993 mSDsCounter, 0 mSdLazyCounter, 2292 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 4988 SdHoareTripleChecker+Invalid, 2468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:27,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [786 Valid, 4988 Invalid, 2468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 2292 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:30:27,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8472 states. [2022-03-01 16:30:28,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8472 to 5817. [2022-03-01 16:30:28,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5817 states, 5816 states have (on average 2.8371733149931226) internal successors, (16501), 5816 states have internal predecessors, (16501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:28,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5817 states to 5817 states and 16501 transitions. [2022-03-01 16:30:28,081 INFO L78 Accepts]: Start accepts. Automaton has 5817 states and 16501 transitions. Word has length 78 [2022-03-01 16:30:28,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:28,082 INFO L470 AbstractCegarLoop]: Abstraction has 5817 states and 16501 transitions. [2022-03-01 16:30:28,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:28,082 INFO L276 IsEmpty]: Start isEmpty. Operand 5817 states and 16501 transitions. [2022-03-01 16:30:28,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:30:28,088 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:28,088 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:28,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Ended with exit code 0 [2022-03-01 16:30:28,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 170 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2022-03-01 16:30:28,289 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:28,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:28,289 INFO L85 PathProgramCache]: Analyzing trace with hash 2087972053, now seen corresponding path program 170 times [2022-03-01 16:30:28,289 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:28,289 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849588716] [2022-03-01 16:30:28,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:28,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:28,445 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:28,445 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:28,445 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849588716] [2022-03-01 16:30:28,445 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849588716] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:30:28,445 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976773160] [2022-03-01 16:30:28,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:30:28,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:30:28,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:30:28,446 INFO L229 MonitoredProcess]: Starting monitored process 171 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:30:28,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Waiting until timeout for monitored process [2022-03-01 16:30:28,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:30:28,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:30:28,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-01 16:30:28,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:30:28,880 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:28,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:30:29,548 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:29,548 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976773160] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:30:29,548 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:30:29,548 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2022-03-01 16:30:29,548 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362931219] [2022-03-01 16:30:29,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:30:29,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-01 16:30:29,549 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:29,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-01 16:30:29,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1483, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 16:30:29,549 INFO L87 Difference]: Start difference. First operand 5817 states and 16501 transitions. Second operand has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:33,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:33,733 INFO L93 Difference]: Finished difference Result 8475 states and 23655 transitions. [2022-03-01 16:30:33,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-03-01 16:30:33,734 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:30:33,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:33,747 INFO L225 Difference]: With dead ends: 8475 [2022-03-01 16:30:33,747 INFO L226 Difference]: Without dead ends: 8394 [2022-03-01 16:30:33,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 131 SyntacticMatches, 4 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7756 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2589, Invalid=20363, Unknown=0, NotChecked=0, Total=22952 [2022-03-01 16:30:33,750 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 865 mSDsluCounter, 5557 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 5479 SdHoareTripleChecker+Invalid, 2696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:33,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 5479 Invalid, 2696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2528 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:30:33,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8394 states. [2022-03-01 16:30:33,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8394 to 6105. [2022-03-01 16:30:33,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6105 states, 6104 states have (on average 2.838302752293578) internal successors, (17325), 6104 states have internal predecessors, (17325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:33,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6105 states to 6105 states and 17325 transitions. [2022-03-01 16:30:33,858 INFO L78 Accepts]: Start accepts. Automaton has 6105 states and 17325 transitions. Word has length 78 [2022-03-01 16:30:33,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:33,858 INFO L470 AbstractCegarLoop]: Abstraction has 6105 states and 17325 transitions. [2022-03-01 16:30:33,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:33,858 INFO L276 IsEmpty]: Start isEmpty. Operand 6105 states and 17325 transitions. [2022-03-01 16:30:33,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:30:33,865 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:33,865 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:33,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Forceful destruction successful, exit code 0 [2022-03-01 16:30:34,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2022-03-01 16:30:34,066 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:34,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:34,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1315963339, now seen corresponding path program 171 times [2022-03-01 16:30:34,067 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:34,067 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095197874] [2022-03-01 16:30:34,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:34,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:34,212 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:30:34,212 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:34,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095197874] [2022-03-01 16:30:34,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095197874] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:30:34,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071734029] [2022-03-01 16:30:34,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:30:34,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:30:34,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:30:34,214 INFO L229 MonitoredProcess]: Starting monitored process 172 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:30:34,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Waiting until timeout for monitored process [2022-03-01 16:30:34,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 16:30:34,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:30:34,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:30:34,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:30:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:30:34,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:30:34,982 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:30:34,982 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071734029] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:30:34,982 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:30:34,982 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 15] total 36 [2022-03-01 16:30:34,982 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755257690] [2022-03-01 16:30:34,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:30:34,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-01 16:30:34,983 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:34,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-01 16:30:34,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1135, Unknown=0, NotChecked=0, Total=1260 [2022-03-01 16:30:34,983 INFO L87 Difference]: Start difference. First operand 6105 states and 17325 transitions. Second operand has 36 states, 36 states have (on average 3.3055555555555554) internal successors, (119), 36 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:37,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:37,875 INFO L93 Difference]: Finished difference Result 7797 states and 21911 transitions. [2022-03-01 16:30:37,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-03-01 16:30:37,876 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3055555555555554) internal successors, (119), 36 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:30:37,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:37,888 INFO L225 Difference]: With dead ends: 7797 [2022-03-01 16:30:37,889 INFO L226 Difference]: Without dead ends: 7731 [2022-03-01 16:30:37,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 136 SyntacticMatches, 4 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8673 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3430, Invalid=21692, Unknown=0, NotChecked=0, Total=25122 [2022-03-01 16:30:37,892 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 748 mSDsluCounter, 3608 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 3629 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:37,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [748 Valid, 3629 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1636 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:30:37,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7731 states. [2022-03-01 16:30:37,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7731 to 5501. [2022-03-01 16:30:37,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5501 states, 5500 states have (on average 2.829818181818182) internal successors, (15564), 5500 states have internal predecessors, (15564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:37,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5501 states to 5501 states and 15564 transitions. [2022-03-01 16:30:37,975 INFO L78 Accepts]: Start accepts. Automaton has 5501 states and 15564 transitions. Word has length 78 [2022-03-01 16:30:37,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:37,975 INFO L470 AbstractCegarLoop]: Abstraction has 5501 states and 15564 transitions. [2022-03-01 16:30:37,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.3055555555555554) internal successors, (119), 36 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:37,975 INFO L276 IsEmpty]: Start isEmpty. Operand 5501 states and 15564 transitions. [2022-03-01 16:30:37,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:30:37,982 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:37,982 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:37,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Forceful destruction successful, exit code 0 [2022-03-01 16:30:38,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 172 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable203 [2022-03-01 16:30:38,182 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:38,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:38,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1749447751, now seen corresponding path program 172 times [2022-03-01 16:30:38,183 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:38,183 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88491471] [2022-03-01 16:30:38,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:38,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:38,351 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:38,351 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:38,351 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88491471] [2022-03-01 16:30:38,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88491471] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:30:38,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723244927] [2022-03-01 16:30:38,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:30:38,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:30:38,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:30:38,353 INFO L229 MonitoredProcess]: Starting monitored process 173 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:30:38,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Waiting until timeout for monitored process [2022-03-01 16:30:38,486 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:30:38,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:30:38,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-01 16:30:38,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:30:38,739 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:38,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:30:39,338 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:39,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723244927] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:30:39,339 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:30:39,339 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 36 [2022-03-01 16:30:39,339 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246938076] [2022-03-01 16:30:39,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:30:39,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-01 16:30:39,339 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:39,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-01 16:30:39,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1138, Unknown=0, NotChecked=0, Total=1260 [2022-03-01 16:30:39,340 INFO L87 Difference]: Start difference. First operand 5501 states and 15564 transitions. Second operand has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:44,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:44,548 INFO L93 Difference]: Finished difference Result 10735 states and 30047 transitions. [2022-03-01 16:30:44,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-03-01 16:30:44,548 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:30:44,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:44,566 INFO L225 Difference]: With dead ends: 10735 [2022-03-01 16:30:44,566 INFO L226 Difference]: Without dead ends: 10567 [2022-03-01 16:30:44,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 136 SyntacticMatches, 4 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12559 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=4629, Invalid=28313, Unknown=0, NotChecked=0, Total=32942 [2022-03-01 16:30:44,570 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 1101 mSDsluCounter, 3745 mSDsCounter, 0 mSdLazyCounter, 1985 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 3749 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:44,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1101 Valid, 3749 Invalid, 2221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1985 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:30:44,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10567 states. [2022-03-01 16:30:44,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10567 to 7401. [2022-03-01 16:30:44,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7401 states, 7400 states have (on average 2.877972972972973) internal successors, (21297), 7400 states have internal predecessors, (21297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:44,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7401 states to 7401 states and 21297 transitions. [2022-03-01 16:30:44,719 INFO L78 Accepts]: Start accepts. Automaton has 7401 states and 21297 transitions. Word has length 78 [2022-03-01 16:30:44,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:44,719 INFO L470 AbstractCegarLoop]: Abstraction has 7401 states and 21297 transitions. [2022-03-01 16:30:44,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:44,719 INFO L276 IsEmpty]: Start isEmpty. Operand 7401 states and 21297 transitions. [2022-03-01 16:30:44,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:30:44,728 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:44,728 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:44,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Ended with exit code 0 [2022-03-01 16:30:44,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204,173 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:30:44,929 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:44,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:44,929 INFO L85 PathProgramCache]: Analyzing trace with hash 623584733, now seen corresponding path program 173 times [2022-03-01 16:30:44,930 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:44,930 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009870325] [2022-03-01 16:30:44,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:44,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:45,074 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:45,074 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:45,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009870325] [2022-03-01 16:30:45,075 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009870325] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:30:45,075 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256557971] [2022-03-01 16:30:45,075 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:30:45,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:30:45,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:30:45,076 INFO L229 MonitoredProcess]: Starting monitored process 174 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:30:45,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Waiting until timeout for monitored process [2022-03-01 16:30:45,209 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 16:30:45,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:30:45,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-01 16:30:45,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:30:45,604 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:45,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:30:46,276 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:46,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256557971] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:30:46,276 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:30:46,276 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 20] total 46 [2022-03-01 16:30:46,276 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397875850] [2022-03-01 16:30:46,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:30:46,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-01 16:30:46,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:46,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-01 16:30:46,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1891, Unknown=0, NotChecked=0, Total=2070 [2022-03-01 16:30:46,277 INFO L87 Difference]: Start difference. First operand 7401 states and 21297 transitions. Second operand has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:59,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:59,575 INFO L93 Difference]: Finished difference Result 19985 states and 56953 transitions. [2022-03-01 16:30:59,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 312 states. [2022-03-01 16:30:59,575 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:30:59,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:59,614 INFO L225 Difference]: With dead ends: 19985 [2022-03-01 16:30:59,614 INFO L226 Difference]: Without dead ends: 19759 [2022-03-01 16:30:59,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 126 SyntacticMatches, 4 SemanticMatches, 346 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49321 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=13607, Invalid=107149, Unknown=0, NotChecked=0, Total=120756 [2022-03-01 16:30:59,622 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 2095 mSDsluCounter, 7381 mSDsCounter, 0 mSdLazyCounter, 4201 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2095 SdHoareTripleChecker+Valid, 7343 SdHoareTripleChecker+Invalid, 4670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 4201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:59,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2095 Valid, 7343 Invalid, 4670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 4201 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-01 16:30:59,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19759 states. [2022-03-01 16:30:59,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19759 to 11256. [2022-03-01 16:30:59,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11256 states, 11255 states have (on average 2.9018214127054645) internal successors, (32660), 11255 states have internal predecessors, (32660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:59,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11256 states to 11256 states and 32660 transitions. [2022-03-01 16:30:59,847 INFO L78 Accepts]: Start accepts. Automaton has 11256 states and 32660 transitions. Word has length 78 [2022-03-01 16:30:59,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:59,847 INFO L470 AbstractCegarLoop]: Abstraction has 11256 states and 32660 transitions. [2022-03-01 16:30:59,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:30:59,848 INFO L276 IsEmpty]: Start isEmpty. Operand 11256 states and 32660 transitions. [2022-03-01 16:30:59,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:30:59,863 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:59,863 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:59,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Forceful destruction successful, exit code 0 [2022-03-01 16:31:00,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205,174 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:31:00,064 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:00,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:00,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1716786247, now seen corresponding path program 174 times [2022-03-01 16:31:00,064 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:00,064 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71074153] [2022-03-01 16:31:00,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:00,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:00,225 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:00,225 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:00,225 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71074153] [2022-03-01 16:31:00,225 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71074153] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:31:00,225 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003454940] [2022-03-01 16:31:00,225 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:31:00,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:31:00,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:31:00,226 INFO L229 MonitoredProcess]: Starting monitored process 175 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:31:00,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Waiting until timeout for monitored process [2022-03-01 16:31:00,368 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 16:31:00,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:31:00,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-01 16:31:00,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:31:00,759 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:00,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:31:01,469 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:01,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003454940] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:31:01,469 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:31:01,469 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 20] total 46 [2022-03-01 16:31:01,469 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77071896] [2022-03-01 16:31:01,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:31:01,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-01 16:31:01,469 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:01,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-01 16:31:01,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1901, Unknown=0, NotChecked=0, Total=2070 [2022-03-01 16:31:01,470 INFO L87 Difference]: Start difference. First operand 11256 states and 32660 transitions. Second operand has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:13,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:13,108 INFO L93 Difference]: Finished difference Result 19167 states and 54528 transitions. [2022-03-01 16:31:13,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 280 states. [2022-03-01 16:31:13,109 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:31:13,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:13,140 INFO L225 Difference]: With dead ends: 19167 [2022-03-01 16:31:13,140 INFO L226 Difference]: Without dead ends: 18556 [2022-03-01 16:31:13,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 126 SyntacticMatches, 4 SemanticMatches, 314 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39536 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=11399, Invalid=88141, Unknown=0, NotChecked=0, Total=99540 [2022-03-01 16:31:13,144 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 2008 mSDsluCounter, 6652 mSDsCounter, 0 mSdLazyCounter, 3456 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2008 SdHoareTripleChecker+Valid, 6649 SdHoareTripleChecker+Invalid, 3900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 3456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:13,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2008 Valid, 6649 Invalid, 3900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 3456 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 16:31:13,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18556 states. [2022-03-01 16:31:13,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18556 to 11624. [2022-03-01 16:31:13,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11624 states, 11623 states have (on average 2.8925406521552093) internal successors, (33620), 11623 states have internal predecessors, (33620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:13,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11624 states to 11624 states and 33620 transitions. [2022-03-01 16:31:13,362 INFO L78 Accepts]: Start accepts. Automaton has 11624 states and 33620 transitions. Word has length 78 [2022-03-01 16:31:13,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:13,362 INFO L470 AbstractCegarLoop]: Abstraction has 11624 states and 33620 transitions. [2022-03-01 16:31:13,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:13,362 INFO L276 IsEmpty]: Start isEmpty. Operand 11624 states and 33620 transitions. [2022-03-01 16:31:13,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:31:13,377 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:13,377 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:13,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Ended with exit code 0 [2022-03-01 16:31:13,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2022-03-01 16:31:13,578 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:13,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:13,578 INFO L85 PathProgramCache]: Analyzing trace with hash -115417865, now seen corresponding path program 175 times [2022-03-01 16:31:13,578 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:13,578 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726397965] [2022-03-01 16:31:13,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:13,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:13,731 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:13,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726397965] [2022-03-01 16:31:13,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726397965] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:31:13,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75547794] [2022-03-01 16:31:13,731 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:31:13,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:31:13,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:31:13,732 INFO L229 MonitoredProcess]: Starting monitored process 176 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:31:13,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Waiting until timeout for monitored process [2022-03-01 16:31:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:13,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-01 16:31:13,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:31:14,166 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:14,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:31:14,823 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:14,824 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75547794] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:31:14,824 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:31:14,824 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2022-03-01 16:31:14,824 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321334461] [2022-03-01 16:31:14,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:31:14,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-01 16:31:14,824 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:14,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-01 16:31:14,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1477, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 16:31:14,825 INFO L87 Difference]: Start difference. First operand 11624 states and 33620 transitions. Second operand has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:23,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:23,054 INFO L93 Difference]: Finished difference Result 23195 states and 66287 transitions. [2022-03-01 16:31:23,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2022-03-01 16:31:23,055 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:31:23,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:23,089 INFO L225 Difference]: With dead ends: 23195 [2022-03-01 16:31:23,089 INFO L226 Difference]: Without dead ends: 22407 [2022-03-01 16:31:23,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 131 SyntacticMatches, 4 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21092 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=7444, Invalid=46612, Unknown=0, NotChecked=0, Total=54056 [2022-03-01 16:31:23,092 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 1334 mSDsluCounter, 5159 mSDsCounter, 0 mSdLazyCounter, 2906 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 5180 SdHoareTripleChecker+Invalid, 3124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 2906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:23,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1334 Valid, 5180 Invalid, 3124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 2906 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 16:31:23,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22407 states. [2022-03-01 16:31:23,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22407 to 13840. [2022-03-01 16:31:23,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13840 states, 13839 states have (on average 2.907001951008021) internal successors, (40230), 13839 states have internal predecessors, (40230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:23,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13840 states to 13840 states and 40230 transitions. [2022-03-01 16:31:23,362 INFO L78 Accepts]: Start accepts. Automaton has 13840 states and 40230 transitions. Word has length 78 [2022-03-01 16:31:23,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:23,362 INFO L470 AbstractCegarLoop]: Abstraction has 13840 states and 40230 transitions. [2022-03-01 16:31:23,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:23,362 INFO L276 IsEmpty]: Start isEmpty. Operand 13840 states and 40230 transitions. [2022-03-01 16:31:23,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:31:23,381 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:23,381 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:23,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Forceful destruction successful, exit code 0 [2022-03-01 16:31:23,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,176 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:31:23,582 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:23,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:23,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1870701639, now seen corresponding path program 176 times [2022-03-01 16:31:23,582 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:23,582 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453541512] [2022-03-01 16:31:23,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:23,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:23,752 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:23,752 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453541512] [2022-03-01 16:31:23,752 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453541512] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:31:23,752 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945866164] [2022-03-01 16:31:23,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:31:23,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:31:23,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:31:23,753 INFO L229 MonitoredProcess]: Starting monitored process 177 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:31:23,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Waiting until timeout for monitored process [2022-03-01 16:31:23,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:31:23,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:31:23,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-01 16:31:23,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:31:24,207 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:24,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:31:24,880 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:24,880 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945866164] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:31:24,880 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:31:24,880 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-01 16:31:24,880 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479662077] [2022-03-01 16:31:24,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:31:24,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-01 16:31:24,880 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:24,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-01 16:31:24,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1557, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:31:24,881 INFO L87 Difference]: Start difference. First operand 13840 states and 40230 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:27,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:27,623 INFO L93 Difference]: Finished difference Result 18287 states and 52330 transitions. [2022-03-01 16:31:27,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-03-01 16:31:27,623 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:31:27,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:27,660 INFO L225 Difference]: With dead ends: 18287 [2022-03-01 16:31:27,661 INFO L226 Difference]: Without dead ends: 18221 [2022-03-01 16:31:27,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3545 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1658, Invalid=10774, Unknown=0, NotChecked=0, Total=12432 [2022-03-01 16:31:27,662 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 575 mSDsluCounter, 4155 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 4196 SdHoareTripleChecker+Invalid, 2428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:27,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 4196 Invalid, 2428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:31:27,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18221 states. [2022-03-01 16:31:27,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18221 to 14184. [2022-03-01 16:31:27,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14184 states, 14183 states have (on average 2.9110907424381303) internal successors, (41288), 14183 states have internal predecessors, (41288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:27,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14184 states to 14184 states and 41288 transitions. [2022-03-01 16:31:27,927 INFO L78 Accepts]: Start accepts. Automaton has 14184 states and 41288 transitions. Word has length 78 [2022-03-01 16:31:27,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:27,927 INFO L470 AbstractCegarLoop]: Abstraction has 14184 states and 41288 transitions. [2022-03-01 16:31:27,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:27,927 INFO L276 IsEmpty]: Start isEmpty. Operand 14184 states and 41288 transitions. [2022-03-01 16:31:27,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:31:27,947 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:27,947 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:27,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Ended with exit code 0 [2022-03-01 16:31:28,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,177 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:31:28,147 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:28,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:28,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1302268113, now seen corresponding path program 177 times [2022-03-01 16:31:28,148 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:28,148 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501846971] [2022-03-01 16:31:28,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:28,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:28,320 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:28,320 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:28,320 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501846971] [2022-03-01 16:31:28,320 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501846971] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:31:28,320 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819454977] [2022-03-01 16:31:28,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:31:28,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:31:28,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:31:28,322 INFO L229 MonitoredProcess]: Starting monitored process 178 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:31:28,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Waiting until timeout for monitored process [2022-03-01 16:31:28,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 16:31:28,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:31:28,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 16:31:28,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:31:28,722 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:31:28,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:31:29,038 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:31:29,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819454977] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:31:29,038 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:31:29,038 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 36 [2022-03-01 16:31:29,038 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808890765] [2022-03-01 16:31:29,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:31:29,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-01 16:31:29,039 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:29,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-01 16:31:29,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1137, Unknown=0, NotChecked=0, Total=1260 [2022-03-01 16:31:29,039 INFO L87 Difference]: Start difference. First operand 14184 states and 41288 transitions. Second operand has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:31,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:31,677 INFO L93 Difference]: Finished difference Result 21124 states and 61585 transitions. [2022-03-01 16:31:31,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-03-01 16:31:31,677 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:31:31,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:31,715 INFO L225 Difference]: With dead ends: 21124 [2022-03-01 16:31:31,715 INFO L226 Difference]: Without dead ends: 20256 [2022-03-01 16:31:31,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 135 SyntacticMatches, 5 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3859 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2127, Invalid=11445, Unknown=0, NotChecked=0, Total=13572 [2022-03-01 16:31:31,716 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 743 mSDsluCounter, 3484 mSDsCounter, 0 mSdLazyCounter, 1655 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 3564 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:31,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [743 Valid, 3564 Invalid, 1750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1655 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 16:31:31,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20256 states. [2022-03-01 16:31:31,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20256 to 9570. [2022-03-01 16:31:31,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9570 states, 9569 states have (on average 2.8057268262096353) internal successors, (26848), 9569 states have internal predecessors, (26848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:31,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9570 states to 9570 states and 26848 transitions. [2022-03-01 16:31:31,940 INFO L78 Accepts]: Start accepts. Automaton has 9570 states and 26848 transitions. Word has length 78 [2022-03-01 16:31:31,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:31,940 INFO L470 AbstractCegarLoop]: Abstraction has 9570 states and 26848 transitions. [2022-03-01 16:31:31,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:31,941 INFO L276 IsEmpty]: Start isEmpty. Operand 9570 states and 26848 transitions. [2022-03-01 16:31:31,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:31:31,952 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:31,953 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:31,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Forceful destruction successful, exit code 0 [2022-03-01 16:31:32,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,178 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:31:32,153 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:32,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:32,153 INFO L85 PathProgramCache]: Analyzing trace with hash -453015661, now seen corresponding path program 178 times [2022-03-01 16:31:32,153 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:32,154 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709222594] [2022-03-01 16:31:32,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:32,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:32,331 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:32,332 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:32,332 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709222594] [2022-03-01 16:31:32,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709222594] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:31:32,332 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451752404] [2022-03-01 16:31:32,332 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:31:32,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:31:32,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:31:32,333 INFO L229 MonitoredProcess]: Starting monitored process 179 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:31:32,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Waiting until timeout for monitored process [2022-03-01 16:31:32,469 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:31:32,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:31:32,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 16:31:32,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:31:32,861 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:32,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:31:33,400 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:33,400 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451752404] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:31:33,400 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:31:33,400 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2022-03-01 16:31:33,400 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546344996] [2022-03-01 16:31:33,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:31:33,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-01 16:31:33,401 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:33,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-01 16:31:33,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1820, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 16:31:33,401 INFO L87 Difference]: Start difference. First operand 9570 states and 26848 transitions. Second operand has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:38,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:38,622 INFO L93 Difference]: Finished difference Result 13860 states and 38419 transitions. [2022-03-01 16:31:38,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2022-03-01 16:31:38,622 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:31:38,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:38,644 INFO L225 Difference]: With dead ends: 13860 [2022-03-01 16:31:38,644 INFO L226 Difference]: Without dead ends: 13630 [2022-03-01 16:31:38,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13761 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=3787, Invalid=34433, Unknown=0, NotChecked=0, Total=38220 [2022-03-01 16:31:38,648 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 1011 mSDsluCounter, 5688 mSDsCounter, 0 mSdLazyCounter, 3038 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 5698 SdHoareTripleChecker+Invalid, 3214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 3038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:38,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1011 Valid, 5698 Invalid, 3214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 3038 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 16:31:38,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13630 states. [2022-03-01 16:31:38,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13630 to 9910. [2022-03-01 16:31:38,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9910 states, 9909 states have (on average 2.807447774750227) internal successors, (27819), 9909 states have internal predecessors, (27819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:38,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9910 states to 9910 states and 27819 transitions. [2022-03-01 16:31:38,819 INFO L78 Accepts]: Start accepts. Automaton has 9910 states and 27819 transitions. Word has length 78 [2022-03-01 16:31:38,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:38,819 INFO L470 AbstractCegarLoop]: Abstraction has 9910 states and 27819 transitions. [2022-03-01 16:31:38,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:38,819 INFO L276 IsEmpty]: Start isEmpty. Operand 9910 states and 27819 transitions. [2022-03-01 16:31:38,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:31:38,831 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:38,831 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:38,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Ended with exit code 0 [2022-03-01 16:31:39,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 179 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2022-03-01 16:31:39,031 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:39,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:39,032 INFO L85 PathProgramCache]: Analyzing trace with hash -425959533, now seen corresponding path program 179 times [2022-03-01 16:31:39,032 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:39,032 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523222184] [2022-03-01 16:31:39,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:39,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:39,186 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:39,186 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:39,186 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523222184] [2022-03-01 16:31:39,186 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523222184] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:31:39,186 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993935973] [2022-03-01 16:31:39,186 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:31:39,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:31:39,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:31:39,187 INFO L229 MonitoredProcess]: Starting monitored process 180 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:31:39,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Waiting until timeout for monitored process [2022-03-01 16:31:39,324 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 16:31:39,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:31:39,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-01 16:31:39,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:31:39,639 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:39,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:31:40,323 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:40,323 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993935973] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:31:40,323 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:31:40,323 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-01 16:31:40,324 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415761150] [2022-03-01 16:31:40,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:31:40,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-01 16:31:40,324 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:40,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-01 16:31:40,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1543, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:31:40,324 INFO L87 Difference]: Start difference. First operand 9910 states and 27819 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:44,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:44,749 INFO L93 Difference]: Finished difference Result 13650 states and 37880 transitions. [2022-03-01 16:31:44,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-03-01 16:31:44,750 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:31:44,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:44,773 INFO L225 Difference]: With dead ends: 13650 [2022-03-01 16:31:44,773 INFO L226 Difference]: Without dead ends: 13486 [2022-03-01 16:31:44,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8753 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3695, Invalid=22387, Unknown=0, NotChecked=0, Total=26082 [2022-03-01 16:31:44,776 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 755 mSDsluCounter, 4900 mSDsCounter, 0 mSdLazyCounter, 2623 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 4921 SdHoareTripleChecker+Invalid, 2755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:44,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 4921 Invalid, 2755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2623 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:31:44,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13486 states. [2022-03-01 16:31:44,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13486 to 9974. [2022-03-01 16:31:44,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9974 states, 9973 states have (on average 2.807079113606738) internal successors, (27995), 9973 states have internal predecessors, (27995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:44,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9974 states to 9974 states and 27995 transitions. [2022-03-01 16:31:44,945 INFO L78 Accepts]: Start accepts. Automaton has 9974 states and 27995 transitions. Word has length 78 [2022-03-01 16:31:44,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:44,945 INFO L470 AbstractCegarLoop]: Abstraction has 9974 states and 27995 transitions. [2022-03-01 16:31:44,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:44,946 INFO L276 IsEmpty]: Start isEmpty. Operand 9974 states and 27995 transitions. [2022-03-01 16:31:44,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:31:44,985 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:44,985 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:45,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Ended with exit code 0 [2022-03-01 16:31:45,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 180 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable211 [2022-03-01 16:31:45,185 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:45,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:45,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1803434457, now seen corresponding path program 180 times [2022-03-01 16:31:45,186 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:45,186 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682823897] [2022-03-01 16:31:45,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:45,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:45,340 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:45,340 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:45,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682823897] [2022-03-01 16:31:45,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682823897] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:31:45,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255693813] [2022-03-01 16:31:45,340 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:31:45,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:31:45,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:31:45,341 INFO L229 MonitoredProcess]: Starting monitored process 181 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:31:45,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Waiting until timeout for monitored process [2022-03-01 16:31:45,481 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 16:31:45,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:31:45,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-01 16:31:45,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:31:45,816 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:45,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:31:46,485 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:46,485 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255693813] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:31:46,485 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:31:46,485 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-03-01 16:31:46,485 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942930959] [2022-03-01 16:31:46,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:31:46,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-01 16:31:46,485 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:46,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-01 16:31:46,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1631, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 16:31:46,486 INFO L87 Difference]: Start difference. First operand 9974 states and 27995 transitions. Second operand has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:49,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:49,533 INFO L93 Difference]: Finished difference Result 14610 states and 40664 transitions. [2022-03-01 16:31:49,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-01 16:31:49,533 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:31:49,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:49,560 INFO L225 Difference]: With dead ends: 14610 [2022-03-01 16:31:49,560 INFO L226 Difference]: Without dead ends: 14495 [2022-03-01 16:31:49,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4579 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2313, Invalid=13187, Unknown=0, NotChecked=0, Total=15500 [2022-03-01 16:31:49,562 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 787 mSDsluCounter, 3685 mSDsCounter, 0 mSdLazyCounter, 1917 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 3745 SdHoareTripleChecker+Invalid, 2051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:49,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 3745 Invalid, 2051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1917 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 16:31:49,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14495 states. [2022-03-01 16:31:49,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14495 to 10198. [2022-03-01 16:31:49,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10198 states, 10197 states have (on average 2.8136706874570954) internal successors, (28691), 10197 states have internal predecessors, (28691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:49,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10198 states to 10198 states and 28691 transitions. [2022-03-01 16:31:49,803 INFO L78 Accepts]: Start accepts. Automaton has 10198 states and 28691 transitions. Word has length 78 [2022-03-01 16:31:49,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:49,803 INFO L470 AbstractCegarLoop]: Abstraction has 10198 states and 28691 transitions. [2022-03-01 16:31:49,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:49,803 INFO L276 IsEmpty]: Start isEmpty. Operand 10198 states and 28691 transitions. [2022-03-01 16:31:49,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:31:49,814 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:49,814 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:49,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Ended with exit code 0 [2022-03-01 16:31:50,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 181 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2022-03-01 16:31:50,015 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:50,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:50,015 INFO L85 PathProgramCache]: Analyzing trace with hash -547194229, now seen corresponding path program 181 times [2022-03-01 16:31:50,015 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:50,015 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484746089] [2022-03-01 16:31:50,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:50,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:50,165 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:50,166 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:50,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484746089] [2022-03-01 16:31:50,166 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484746089] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:31:50,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470577258] [2022-03-01 16:31:50,166 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:31:50,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:31:50,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:31:50,167 INFO L229 MonitoredProcess]: Starting monitored process 182 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:31:50,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Waiting until timeout for monitored process [2022-03-01 16:31:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:50,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-01 16:31:50,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:31:50,629 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:50,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:31:51,269 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:51,269 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470577258] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:31:51,269 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:31:51,269 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-03-01 16:31:51,269 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622295668] [2022-03-01 16:31:51,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:31:51,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-01 16:31:51,269 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:51,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-01 16:31:51,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1617, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 16:31:51,270 INFO L87 Difference]: Start difference. First operand 10198 states and 28691 transitions. Second operand has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:54,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:54,658 INFO L93 Difference]: Finished difference Result 14982 states and 41643 transitions. [2022-03-01 16:31:54,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-03-01 16:31:54,659 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:31:54,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:54,685 INFO L225 Difference]: With dead ends: 14982 [2022-03-01 16:31:54,685 INFO L226 Difference]: Without dead ends: 14867 [2022-03-01 16:31:54,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6419 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2708, Invalid=17032, Unknown=0, NotChecked=0, Total=19740 [2022-03-01 16:31:54,688 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 699 mSDsluCounter, 4138 mSDsCounter, 0 mSdLazyCounter, 2206 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 4172 SdHoareTripleChecker+Invalid, 2308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:54,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [699 Valid, 4172 Invalid, 2308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2206 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:31:54,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14867 states. [2022-03-01 16:31:54,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14867 to 10246. [2022-03-01 16:31:54,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10246 states, 10245 states have (on average 2.814543679843826) internal successors, (28835), 10245 states have internal predecessors, (28835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:54,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10246 states to 10246 states and 28835 transitions. [2022-03-01 16:31:54,901 INFO L78 Accepts]: Start accepts. Automaton has 10246 states and 28835 transitions. Word has length 78 [2022-03-01 16:31:54,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:31:54,901 INFO L470 AbstractCegarLoop]: Abstraction has 10246 states and 28835 transitions. [2022-03-01 16:31:54,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:31:54,902 INFO L276 IsEmpty]: Start isEmpty. Operand 10246 states and 28835 transitions. [2022-03-01 16:31:54,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:31:54,914 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:31:54,914 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:31:54,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Ended with exit code 0 [2022-03-01 16:31:55,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 182 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2022-03-01 16:31:55,115 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:31:55,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:31:55,116 INFO L85 PathProgramCache]: Analyzing trace with hash 709400439, now seen corresponding path program 182 times [2022-03-01 16:31:55,116 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:31:55,116 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037850365] [2022-03-01 16:31:55,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:31:55,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:31:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:31:55,275 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:55,275 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:31:55,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037850365] [2022-03-01 16:31:55,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037850365] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:31:55,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133975845] [2022-03-01 16:31:55,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:31:55,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:31:55,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:31:55,277 INFO L229 MonitoredProcess]: Starting monitored process 183 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:31:55,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Waiting until timeout for monitored process [2022-03-01 16:31:55,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:31:55,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:31:55,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-01 16:31:55,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:31:55,722 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:55,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:31:56,395 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:31:56,395 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133975845] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:31:56,395 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:31:56,396 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2022-03-01 16:31:56,396 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592336409] [2022-03-01 16:31:56,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:31:56,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-01 16:31:56,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:31:56,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-01 16:31:56,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1468, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 16:31:56,397 INFO L87 Difference]: Start difference. First operand 10246 states and 28835 transitions. Second operand has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:04,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:32:04,185 INFO L93 Difference]: Finished difference Result 21688 states and 60175 transitions. [2022-03-01 16:32:04,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-03-01 16:32:04,185 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:32:04,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:32:04,226 INFO L225 Difference]: With dead ends: 21688 [2022-03-01 16:32:04,226 INFO L226 Difference]: Without dead ends: 21508 [2022-03-01 16:32:04,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 131 SyntacticMatches, 4 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19465 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=7477, Invalid=42923, Unknown=0, NotChecked=0, Total=50400 [2022-03-01 16:32:04,230 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 1024 mSDsluCounter, 4304 mSDsCounter, 0 mSdLazyCounter, 2602 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 4391 SdHoareTripleChecker+Invalid, 2790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 2602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:32:04,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1024 Valid, 4391 Invalid, 2790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 2602 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 16:32:04,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21508 states. [2022-03-01 16:32:04,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21508 to 11138. [2022-03-01 16:32:04,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11138 states, 11137 states have (on average 2.8219448684564963) internal successors, (31428), 11137 states have internal predecessors, (31428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:04,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11138 states to 11138 states and 31428 transitions. [2022-03-01 16:32:04,566 INFO L78 Accepts]: Start accepts. Automaton has 11138 states and 31428 transitions. Word has length 78 [2022-03-01 16:32:04,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:32:04,566 INFO L470 AbstractCegarLoop]: Abstraction has 11138 states and 31428 transitions. [2022-03-01 16:32:04,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:04,566 INFO L276 IsEmpty]: Start isEmpty. Operand 11138 states and 31428 transitions. [2022-03-01 16:32:04,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:32:04,578 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:32:04,578 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:32:04,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Ended with exit code 0 [2022-03-01 16:32:04,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214,183 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:32:04,778 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:32:04,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:32:04,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1813081975, now seen corresponding path program 183 times [2022-03-01 16:32:04,779 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:32:04,779 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223469867] [2022-03-01 16:32:04,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:32:04,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:32:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:32:04,940 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:04,940 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:32:04,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223469867] [2022-03-01 16:32:04,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223469867] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:32:04,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958278145] [2022-03-01 16:32:04,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:32:04,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:32:04,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:32:04,941 INFO L229 MonitoredProcess]: Starting monitored process 184 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:32:04,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Waiting until timeout for monitored process [2022-03-01 16:32:05,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 16:32:05,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:32:05,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-01 16:32:05,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:32:05,387 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:05,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:32:06,041 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:06,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958278145] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:32:06,041 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:32:06,041 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2022-03-01 16:32:06,041 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367557557] [2022-03-01 16:32:06,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:32:06,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-01 16:32:06,042 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:32:06,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-01 16:32:06,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1474, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 16:32:06,042 INFO L87 Difference]: Start difference. First operand 11138 states and 31428 transitions. Second operand has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:13,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:32:13,545 INFO L93 Difference]: Finished difference Result 23070 states and 64218 transitions. [2022-03-01 16:32:13,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2022-03-01 16:32:13,545 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-01 16:32:13,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:32:13,587 INFO L225 Difference]: With dead ends: 23070 [2022-03-01 16:32:13,588 INFO L226 Difference]: Without dead ends: 22984 [2022-03-01 16:32:13,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 131 SyntacticMatches, 4 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20858 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=8016, Invalid=46040, Unknown=0, NotChecked=0, Total=54056 [2022-03-01 16:32:13,592 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 885 mSDsluCounter, 5059 mSDsCounter, 0 mSdLazyCounter, 3034 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 5137 SdHoareTripleChecker+Invalid, 3234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 3034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:32:13,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 5137 Invalid, 3234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 3034 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 16:32:13,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22984 states. [2022-03-01 16:32:13,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22984 to 11466. [2022-03-01 16:32:13,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11466 states, 11465 states have (on average 2.8240732664631487) internal successors, (32378), 11465 states have internal predecessors, (32378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:13,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11466 states to 11466 states and 32378 transitions. [2022-03-01 16:32:13,865 INFO L78 Accepts]: Start accepts. Automaton has 11466 states and 32378 transitions. Word has length 78 [2022-03-01 16:32:13,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:32:13,866 INFO L470 AbstractCegarLoop]: Abstraction has 11466 states and 32378 transitions. [2022-03-01 16:32:13,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:32:13,866 INFO L276 IsEmpty]: Start isEmpty. Operand 11466 states and 32378 transitions. [2022-03-01 16:32:13,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-01 16:32:13,879 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:32:13,879 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:32:13,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Ended with exit code 0 [2022-03-01 16:32:14,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215,184 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:32:14,081 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:32:14,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:32:14,081 INFO L85 PathProgramCache]: Analyzing trace with hash 182463013, now seen corresponding path program 184 times [2022-03-01 16:32:14,081 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:32:14,081 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965327191] [2022-03-01 16:32:14,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:32:14,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:32:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:32:14,228 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:32:14,228 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:32:14,228 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965327191] [2022-03-01 16:32:14,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965327191] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:32:14,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131725501] [2022-03-01 16:32:14,229 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:32:14,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:32:14,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:32:14,230 INFO L229 MonitoredProcess]: Starting monitored process 185 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:32:14,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Waiting until timeout for monitored process [2022-03-01 16:32:14,369 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:32:14,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:32:14,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-01 16:32:14,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2022-03-01 16:32:14,543 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-01 16:32:14,570 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-01 16:32:14,581 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-01 16:32:14,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Ended with exit code 0 [2022-03-01 16:32:14,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable216 [2022-03-01 16:32:14,744 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 79 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 24 known predicates. [2022-03-01 16:32:14,745 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-01 16:32:14,745 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-01 16:32:14,747 INFO L732 BasicCegarLoop]: Path program histogram: [184, 20, 6, 6, 1] [2022-03-01 16:32:14,749 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-01 16:32:14,749 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-01 16:32:14,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.03 04:32:14 BasicIcfg [2022-03-01 16:32:14,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-01 16:32:14,750 INFO L158 Benchmark]: Toolchain (without parser) took 743065.71ms. Allocated memory was 186.6MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 130.3MB in the beginning and 303.7MB in the end (delta: -173.4MB). Peak memory consumption was 908.2MB. Max. memory is 8.0GB. [2022-03-01 16:32:14,750 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 186.6MB. Free memory is still 146.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 16:32:14,750 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.62ms. Allocated memory was 186.6MB in the beginning and 244.3MB in the end (delta: 57.7MB). Free memory was 130.2MB in the beginning and 215.6MB in the end (delta: -85.5MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. [2022-03-01 16:32:14,750 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.57ms. Allocated memory is still 244.3MB. Free memory was 215.6MB in the beginning and 214.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-01 16:32:14,751 INFO L158 Benchmark]: Boogie Preprocessor took 28.28ms. Allocated memory is still 244.3MB. Free memory was 214.1MB in the beginning and 212.8MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 16:32:14,751 INFO L158 Benchmark]: RCFGBuilder took 236.67ms. Allocated memory is still 244.3MB. Free memory was 212.8MB in the beginning and 200.4MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-01 16:32:14,751 INFO L158 Benchmark]: TraceAbstraction took 742526.60ms. Allocated memory was 244.3MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 199.9MB in the beginning and 303.7MB in the end (delta: -103.8MB). Peak memory consumption was 920.7MB. Max. memory is 8.0GB. [2022-03-01 16:32:14,751 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 186.6MB. Free memory is still 146.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 214.62ms. Allocated memory was 186.6MB in the beginning and 244.3MB in the end (delta: 57.7MB). Free memory was 130.2MB in the beginning and 215.6MB in the end (delta: -85.5MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.57ms. Allocated memory is still 244.3MB. Free memory was 215.6MB in the beginning and 214.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.28ms. Allocated memory is still 244.3MB. Free memory was 214.1MB in the beginning and 212.8MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 236.67ms. Allocated memory is still 244.3MB. Free memory was 212.8MB in the beginning and 200.4MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 742526.60ms. Allocated memory was 244.3MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 199.9MB in the beginning and 303.7MB in the end (delta: -103.8MB). Peak memory consumption was 920.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 79 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 24 known predicates. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 79 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 24 known predicates. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 79 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 24 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 104 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 742.4s, OverallIterations: 217, TraceHistogramMax: 2, PathProgramHistogramMax: 184, EmptinessCheckTime: 2.1s, AutomataDifference: 500.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 121976 SdHoareTripleChecker+Valid, 93.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 121976 mSDsluCounter, 545475 SdHoareTripleChecker+Invalid, 78.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 535961 mSDsCounter, 18904 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 267828 IncrementalHoareTripleChecker+Invalid, 286732 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18904 mSolverCounterUnsat, 32481 mSDtfsCounter, 267828 mSolverCounterSat, 1.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43188 GetRequests, 22259 SyntacticMatches, 707 SemanticMatches, 20222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924356 ImplicationChecksByTransitivity, 445.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14625occurred in iteration=158, InterpolantAutomatonStates: 16669, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 28.4s AutomataMinimizationTime, 216 MinimizatonAttempts, 625983 StatesRemovedByMinimization, 215 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 154.2s InterpolantComputationTime, 28306 NumberOfCodeBlocks, 28291 NumberOfCodeBlocksAsserted, 610 NumberOfCheckSat, 40623 ConstructedInterpolants, 0 QuantifiedInterpolants, 243015 SizeOfPredicates, 1890 NumberOfNonLiveVariables, 28968 ConjunctsInSsa, 3684 ConjunctsInUnsatCore, 579 InterpolantComputations, 36 PerfectInterpolantSequences, 244/2214 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown