/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-44898dd [2022-02-15 12:15:43,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 12:15:43,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 12:15:43,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-15 12:15:43,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-15 12:15:43,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-15 12:15:43,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-15 12:15:43,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-15 12:15:43,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-15 12:15:43,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-15 12:15:43,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-15 12:15:43,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-02-15 12:15:43,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 12:15:43,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 12:15:43,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 12:15:43,639 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 [2022-02-15 12:15:43,669 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 12:15:43,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 12:15:43,670 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-15 12:15:43,670 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-15 12:15:43,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-15 12:15:43,671 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-15 12:15:43,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-15 12:15:43,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-15 12:15:43,672 INFO L138 SettingsManager]: * Use SBE=true [2022-02-15 12:15:43,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 12:15:43,673 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 12:15:43,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 12:15:43,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 12:15:43,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 12:15:43,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 12:15:43,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 12:15:43,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 12:15:43,673 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 12:15:43,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 12:15:43,674 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 12:15:43,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 12:15:43,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 12:15:43,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 12:15:43,674 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 12:15:43,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 12:15:43,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 12:15:43,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 12:15:43,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-15 12:15:43,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-15 12:15:43,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-15 12:15:43,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-15 12:15:43,675 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-15 12:15:43,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 12:15:43,676 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-15 12:15:43,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 12:15:43,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 12:15:43,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 12:15:43,905 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 12:15:43,905 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 12:15:43,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c [2022-02-15 12:15:43,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26120064d/d2f5dea97beb48818dc24ea44578f7f1/FLAG18defb1f8 [2022-02-15 12:15:44,250 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 12:15:44,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c [2022-02-15 12:15:44,256 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26120064d/d2f5dea97beb48818dc24ea44578f7f1/FLAG18defb1f8 [2022-02-15 12:15:44,693 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26120064d/d2f5dea97beb48818dc24ea44578f7f1 [2022-02-15 12:15:44,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 12:15:44,696 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-15 12:15:44,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 12:15:44,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 12:15:44,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 12:15:44,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:15:44" (1/1) ... [2022-02-15 12:15:44,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@460b5ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:15:44, skipping insertion in model container [2022-02-15 12:15:44,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:15:44" (1/1) ... [2022-02-15 12:15:44,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 12:15:44,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 12:15:44,857 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] [2022-02-15 12:15:44,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 12:15:44,881 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 12:15:44,896 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] [2022-02-15 12:15:44,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 12:15:44,907 INFO L208 MainTranslator]: Completed translation [2022-02-15 12:15:44,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:15:44 WrapperNode [2022-02-15 12:15:44,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 12:15:44,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-15 12:15:44,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-15 12:15:44,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-15 12:15:44,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:15:44" (1/1) ... [2022-02-15 12:15:44,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:15:44" (1/1) ... [2022-02-15 12:15:44,941 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-02-15 12:15:44,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-15 12:15:44,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 12:15:44,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 12:15:44,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 12:15:44,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:15:44" (1/1) ... [2022-02-15 12:15:44,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:15:44" (1/1) ... [2022-02-15 12:15:44,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:15:44" (1/1) ... [2022-02-15 12:15:44,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:15:44" (1/1) ... [2022-02-15 12:15:44,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:15:44" (1/1) ... [2022-02-15 12:15:44,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:15:44" (1/1) ... [2022-02-15 12:15:44,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:15:44" (1/1) ... [2022-02-15 12:15:44,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 12:15:44,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 12:15:44,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 12:15:44,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 12:15:44,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:15:44" (1/1) ... [2022-02-15 12:15:44,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 12:15:44,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:15:44,999 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) [2022-02-15 12:15:45,011 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 [2022-02-15 12:15:45,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 12:15:45,043 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-15 12:15:45,043 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-15 12:15:45,043 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-15 12:15:45,044 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-15 12:15:45,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 12:15:45,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-15 12:15:45,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 12:15:45,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-15 12:15:45,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-15 12:15:45,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 12:15:45,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 12:15:45,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 12:15:45,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 12:15:45,046 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-15 12:15:45,130 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 12:15:45,132 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 12:15:45,312 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 12:15:45,318 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 12:15:45,318 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-15 12:15:45,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:15:45 BoogieIcfgContainer [2022-02-15 12:15:45,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 12:15:45,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 12:15:45,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 12:15:45,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 12:15:45,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 12:15:44" (1/3) ... [2022-02-15 12:15:45,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422588e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:15:45, skipping insertion in model container [2022-02-15 12:15:45,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:15:44" (2/3) ... [2022-02-15 12:15:45,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422588e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:15:45, skipping insertion in model container [2022-02-15 12:15:45,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:15:45" (3/3) ... [2022-02-15 12:15:45,335 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2022-02-15 12:15:45,343 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-15 12:15:45,343 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-15 12:15:45,344 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 12:15:45,344 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-15 12:15:45,377 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,377 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,378 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,378 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,378 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,379 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,380 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,380 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,383 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,384 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,384 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,384 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,385 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,385 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,385 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,385 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,385 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,385 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,386 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,386 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,386 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,386 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,386 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,387 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,387 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,387 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,387 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,387 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,388 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,388 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,388 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,388 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,389 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,389 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,389 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,389 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,390 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,390 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,390 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,390 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,390 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,390 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,391 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,391 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,391 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,391 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,391 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,392 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,394 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,394 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,395 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,395 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,397 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,397 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,397 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,397 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:15:45,402 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-15 12:15:45,439 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 12:15:45,445 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 [2022-02-15 12:15:45,445 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-15 12:15:45,454 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 88 places, 87 transitions, 190 flow [2022-02-15 12:15:45,520 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) [2022-02-15 12:15:45,525 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) [2022-02-15 12:15:45,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 12:15:45,543 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:45,544 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] [2022-02-15 12:15:45,545 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:45,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:45,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1367960911, now seen corresponding path program 1 times [2022-02-15 12:15:45,558 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:45,559 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246256216] [2022-02-15 12:15:45,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:45,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:45,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:45,785 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:45,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246256216] [2022-02-15 12:15:45,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246256216] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:45,786 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:45,786 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-15 12:15:45,787 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386972395] [2022-02-15 12:15:45,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:45,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-15 12:15:45,792 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:45,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-15 12:15:45,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-15 12:15:45,821 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) [2022-02-15 12:15:45,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:45,884 INFO L93 Difference]: Finished difference Result 530 states and 1320 transitions. [2022-02-15 12:15:45,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-15 12:15:45,887 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 [2022-02-15 12:15:45,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:45,907 INFO L225 Difference]: With dead ends: 530 [2022-02-15 12:15:45,907 INFO L226 Difference]: Without dead ends: 528 [2022-02-15 12:15:45,910 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 [2022-02-15 12:15:45,914 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 [2022-02-15 12:15:45,916 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] [2022-02-15 12:15:45,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-02-15 12:15:45,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2022-02-15 12:15:45,999 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) [2022-02-15 12:15:46,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1318 transitions. [2022-02-15 12:15:46,003 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1318 transitions. Word has length 62 [2022-02-15 12:15:46,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:46,004 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 1318 transitions. [2022-02-15 12:15:46,005 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) [2022-02-15 12:15:46,005 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1318 transitions. [2022-02-15 12:15:46,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 12:15:46,014 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:46,014 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] [2022-02-15 12:15:46,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 12:15:46,015 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:46,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:46,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1425985199, now seen corresponding path program 1 times [2022-02-15 12:15:46,018 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:46,018 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565773468] [2022-02-15 12:15:46,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:46,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:46,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:46,505 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:46,505 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565773468] [2022-02-15 12:15:46,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565773468] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:46,506 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:46,506 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 12:15:46,506 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056400569] [2022-02-15 12:15:46,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:46,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 12:15:46,507 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:46,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 12:15:46,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-02-15 12:15:46,508 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) [2022-02-15 12:15:46,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:46,770 INFO L93 Difference]: Finished difference Result 830 states and 2079 transitions. [2022-02-15 12:15:46,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 12:15:46,771 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 [2022-02-15 12:15:46,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:46,776 INFO L225 Difference]: With dead ends: 830 [2022-02-15 12:15:46,776 INFO L226 Difference]: Without dead ends: 764 [2022-02-15 12:15:46,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-02-15 12:15:46,778 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, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:46,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 908 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:15:46,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-02-15 12:15:46,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 619. [2022-02-15 12:15:46,796 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) [2022-02-15 12:15:46,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1535 transitions. [2022-02-15 12:15:46,799 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1535 transitions. Word has length 62 [2022-02-15 12:15:46,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:46,799 INFO L470 AbstractCegarLoop]: Abstraction has 619 states and 1535 transitions. [2022-02-15 12:15:46,799 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) [2022-02-15 12:15:46,800 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1535 transitions. [2022-02-15 12:15:46,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 12:15:46,801 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:46,801 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] [2022-02-15 12:15:46,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 12:15:46,802 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:46,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:46,803 INFO L85 PathProgramCache]: Analyzing trace with hash 2050221647, now seen corresponding path program 2 times [2022-02-15 12:15:46,803 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:46,803 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146413152] [2022-02-15 12:15:46,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:46,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:47,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:47,025 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:47,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146413152] [2022-02-15 12:15:47,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146413152] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:47,025 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:47,025 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 12:15:47,025 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305863898] [2022-02-15 12:15:47,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:47,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 12:15:47,026 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:47,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 12:15:47,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-02-15 12:15:47,027 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) [2022-02-15 12:15:47,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:47,355 INFO L93 Difference]: Finished difference Result 738 states and 1846 transitions. [2022-02-15 12:15:47,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 12:15:47,356 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 [2022-02-15 12:15:47,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:47,363 INFO L225 Difference]: With dead ends: 738 [2022-02-15 12:15:47,363 INFO L226 Difference]: Without dead ends: 675 [2022-02-15 12:15:47,364 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 [2022-02-15 12:15:47,368 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 123 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:47,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 868 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:15:47,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2022-02-15 12:15:47,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 627. [2022-02-15 12:15:47,388 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) [2022-02-15 12:15:47,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 1557 transitions. [2022-02-15 12:15:47,390 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 1557 transitions. Word has length 62 [2022-02-15 12:15:47,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:47,392 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 1557 transitions. [2022-02-15 12:15:47,392 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) [2022-02-15 12:15:47,392 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 1557 transitions. [2022-02-15 12:15:47,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 12:15:47,394 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:47,395 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] [2022-02-15 12:15:47,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 12:15:47,395 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:47,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:47,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1996637171, now seen corresponding path program 3 times [2022-02-15 12:15:47,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:47,397 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482192513] [2022-02-15 12:15:47,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:47,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:47,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:47,626 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:47,626 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482192513] [2022-02-15 12:15:47,626 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482192513] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:47,627 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:47,627 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 12:15:47,627 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783924420] [2022-02-15 12:15:47,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:47,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 12:15:47,628 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:47,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 12:15:47,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-02-15 12:15:47,629 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) [2022-02-15 12:15:47,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:47,924 INFO L93 Difference]: Finished difference Result 741 states and 1848 transitions. [2022-02-15 12:15:47,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 12:15:47,927 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 [2022-02-15 12:15:47,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:47,930 INFO L225 Difference]: With dead ends: 741 [2022-02-15 12:15:47,930 INFO L226 Difference]: Without dead ends: 671 [2022-02-15 12:15:47,931 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 [2022-02-15 12:15:47,932 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, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:47,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 819 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:15:47,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-02-15 12:15:47,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 623. [2022-02-15 12:15:47,947 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) [2022-02-15 12:15:47,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1546 transitions. [2022-02-15 12:15:47,950 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1546 transitions. Word has length 62 [2022-02-15 12:15:47,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:47,951 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 1546 transitions. [2022-02-15 12:15:47,951 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) [2022-02-15 12:15:47,952 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1546 transitions. [2022-02-15 12:15:47,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 12:15:47,954 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:47,954 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] [2022-02-15 12:15:47,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 12:15:47,954 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:47,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:47,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1798753555, now seen corresponding path program 4 times [2022-02-15 12:15:47,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:47,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69134558] [2022-02-15 12:15:47,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:47,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:48,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:48,203 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:48,204 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69134558] [2022-02-15 12:15:48,204 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69134558] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:48,204 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:48,204 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 12:15:48,204 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798978635] [2022-02-15 12:15:48,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:48,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 12:15:48,205 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:48,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 12:15:48,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-02-15 12:15:48,206 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) [2022-02-15 12:15:48,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:48,525 INFO L93 Difference]: Finished difference Result 782 states and 1957 transitions. [2022-02-15 12:15:48,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 12:15:48,526 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 [2022-02-15 12:15:48,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:48,529 INFO L225 Difference]: With dead ends: 782 [2022-02-15 12:15:48,529 INFO L226 Difference]: Without dead ends: 716 [2022-02-15 12:15:48,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2022-02-15 12:15:48,530 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, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:48,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 968 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:15:48,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-02-15 12:15:48,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 623. [2022-02-15 12:15:48,543 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) [2022-02-15 12:15:48,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1546 transitions. [2022-02-15 12:15:48,545 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1546 transitions. Word has length 62 [2022-02-15 12:15:48,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:48,546 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 1546 transitions. [2022-02-15 12:15:48,546 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) [2022-02-15 12:15:48,546 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1546 transitions. [2022-02-15 12:15:48,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 12:15:48,547 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:48,548 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] [2022-02-15 12:15:48,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 12:15:48,548 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:48,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:48,548 INFO L85 PathProgramCache]: Analyzing trace with hash -21741301, now seen corresponding path program 5 times [2022-02-15 12:15:48,548 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:48,549 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132017898] [2022-02-15 12:15:48,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:48,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:48,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:48,697 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:48,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132017898] [2022-02-15 12:15:48,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132017898] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:48,697 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:48,697 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 12:15:48,697 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206412635] [2022-02-15 12:15:48,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:48,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 12:15:48,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:48,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 12:15:48,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-02-15 12:15:48,699 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) [2022-02-15 12:15:48,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:48,902 INFO L93 Difference]: Finished difference Result 838 states and 2145 transitions. [2022-02-15 12:15:48,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 12:15:48,902 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 [2022-02-15 12:15:48,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:48,906 INFO L225 Difference]: With dead ends: 838 [2022-02-15 12:15:48,906 INFO L226 Difference]: Without dead ends: 775 [2022-02-15 12:15:48,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2022-02-15 12:15:48,907 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 89 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:48,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 855 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:48,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-02-15 12:15:48,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 643. [2022-02-15 12:15:48,921 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) [2022-02-15 12:15:48,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1609 transitions. [2022-02-15 12:15:48,924 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1609 transitions. Word has length 62 [2022-02-15 12:15:48,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:48,924 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1609 transitions. [2022-02-15 12:15:48,924 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) [2022-02-15 12:15:48,924 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1609 transitions. [2022-02-15 12:15:48,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 12:15:48,926 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:48,926 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] [2022-02-15 12:15:48,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 12:15:48,926 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:48,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:48,927 INFO L85 PathProgramCache]: Analyzing trace with hash -742951413, now seen corresponding path program 6 times [2022-02-15 12:15:48,927 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:48,927 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897144641] [2022-02-15 12:15:48,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:48,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:49,105 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:49,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897144641] [2022-02-15 12:15:49,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897144641] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:49,105 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:49,105 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 12:15:49,105 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851415777] [2022-02-15 12:15:49,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:49,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 12:15:49,106 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:49,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 12:15:49,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-02-15 12:15:49,107 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) [2022-02-15 12:15:49,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:49,312 INFO L93 Difference]: Finished difference Result 806 states and 2057 transitions. [2022-02-15 12:15:49,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 12:15:49,313 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 [2022-02-15 12:15:49,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:49,317 INFO L225 Difference]: With dead ends: 806 [2022-02-15 12:15:49,317 INFO L226 Difference]: Without dead ends: 743 [2022-02-15 12:15:49,318 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 [2022-02-15 12:15:49,318 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 116 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:49,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 615 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:49,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-02-15 12:15:49,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 647. [2022-02-15 12:15:49,332 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) [2022-02-15 12:15:49,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1616 transitions. [2022-02-15 12:15:49,334 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1616 transitions. Word has length 62 [2022-02-15 12:15:49,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:49,334 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 1616 transitions. [2022-02-15 12:15:49,334 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) [2022-02-15 12:15:49,335 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1616 transitions. [2022-02-15 12:15:49,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 12:15:49,336 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:49,336 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] [2022-02-15 12:15:49,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 12:15:49,337 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:49,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:49,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1967045189, now seen corresponding path program 7 times [2022-02-15 12:15:49,337 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:49,337 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423152477] [2022-02-15 12:15:49,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:49,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:49,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:49,488 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:49,488 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423152477] [2022-02-15 12:15:49,488 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423152477] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:49,488 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:49,489 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 12:15:49,489 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161085338] [2022-02-15 12:15:49,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:49,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 12:15:49,489 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:49,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 12:15:49,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-02-15 12:15:49,490 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) [2022-02-15 12:15:49,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:49,722 INFO L93 Difference]: Finished difference Result 809 states and 2059 transitions. [2022-02-15 12:15:49,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 12:15:49,723 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 [2022-02-15 12:15:49,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:49,727 INFO L225 Difference]: With dead ends: 809 [2022-02-15 12:15:49,727 INFO L226 Difference]: Without dead ends: 739 [2022-02-15 12:15:49,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-02-15 12:15:49,728 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 87 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:49,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 836 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:49,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-02-15 12:15:49,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 643. [2022-02-15 12:15:49,742 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) [2022-02-15 12:15:49,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1605 transitions. [2022-02-15 12:15:49,744 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1605 transitions. Word has length 62 [2022-02-15 12:15:49,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:49,744 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1605 transitions. [2022-02-15 12:15:49,745 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) [2022-02-15 12:15:49,745 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1605 transitions. [2022-02-15 12:15:49,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 12:15:49,746 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:49,746 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] [2022-02-15 12:15:49,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 12:15:49,747 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:49,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:49,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1153891209, now seen corresponding path program 8 times [2022-02-15 12:15:49,747 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:49,747 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972113857] [2022-02-15 12:15:49,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:49,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:49,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:49,919 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:49,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972113857] [2022-02-15 12:15:49,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972113857] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:49,919 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:49,920 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 12:15:49,920 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740044594] [2022-02-15 12:15:49,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:49,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 12:15:49,920 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:49,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 12:15:49,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-02-15 12:15:49,921 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) [2022-02-15 12:15:50,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:50,195 INFO L93 Difference]: Finished difference Result 810 states and 2064 transitions. [2022-02-15 12:15:50,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 12:15:50,196 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 [2022-02-15 12:15:50,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:50,199 INFO L225 Difference]: With dead ends: 810 [2022-02-15 12:15:50,199 INFO L226 Difference]: Without dead ends: 747 [2022-02-15 12:15:50,200 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 [2022-02-15 12:15:50,200 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 164 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:50,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 757 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:50,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-02-15 12:15:50,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 651. [2022-02-15 12:15:50,212 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) [2022-02-15 12:15:50,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1627 transitions. [2022-02-15 12:15:50,215 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1627 transitions. Word has length 62 [2022-02-15 12:15:50,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:50,215 INFO L470 AbstractCegarLoop]: Abstraction has 651 states and 1627 transitions. [2022-02-15 12:15:50,215 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) [2022-02-15 12:15:50,215 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1627 transitions. [2022-02-15 12:15:50,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 12:15:50,245 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:50,245 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] [2022-02-15 12:15:50,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 12:15:50,246 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:50,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:50,246 INFO L85 PathProgramCache]: Analyzing trace with hash -431079485, now seen corresponding path program 9 times [2022-02-15 12:15:50,246 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:50,246 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012279174] [2022-02-15 12:15:50,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:50,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:50,417 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:50,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012279174] [2022-02-15 12:15:50,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012279174] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:50,417 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:50,417 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 12:15:50,417 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450023563] [2022-02-15 12:15:50,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:50,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 12:15:50,418 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:50,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 12:15:50,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-02-15 12:15:50,419 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) [2022-02-15 12:15:50,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:50,736 INFO L93 Difference]: Finished difference Result 813 states and 2066 transitions. [2022-02-15 12:15:50,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 12:15:50,737 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 [2022-02-15 12:15:50,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:50,741 INFO L225 Difference]: With dead ends: 813 [2022-02-15 12:15:50,741 INFO L226 Difference]: Without dead ends: 743 [2022-02-15 12:15:50,741 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 [2022-02-15 12:15:50,742 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 95 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:50,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 942 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:15:50,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-02-15 12:15:50,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 647. [2022-02-15 12:15:50,756 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) [2022-02-15 12:15:50,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1616 transitions. [2022-02-15 12:15:50,759 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1616 transitions. Word has length 62 [2022-02-15 12:15:50,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:50,759 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 1616 transitions. [2022-02-15 12:15:50,759 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) [2022-02-15 12:15:50,759 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1616 transitions. [2022-02-15 12:15:50,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 12:15:50,761 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:50,761 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] [2022-02-15 12:15:50,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 12:15:50,761 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:50,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:50,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1717688431, now seen corresponding path program 10 times [2022-02-15 12:15:50,762 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:50,762 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860029517] [2022-02-15 12:15:50,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:50,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:50,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:50,915 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:50,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860029517] [2022-02-15 12:15:50,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860029517] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:50,916 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:50,916 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 12:15:50,916 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103270466] [2022-02-15 12:15:50,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:50,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 12:15:50,916 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:50,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 12:15:50,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-02-15 12:15:50,917 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) [2022-02-15 12:15:51,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:51,198 INFO L93 Difference]: Finished difference Result 854 states and 2175 transitions. [2022-02-15 12:15:51,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 12:15:51,198 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 [2022-02-15 12:15:51,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:51,202 INFO L225 Difference]: With dead ends: 854 [2022-02-15 12:15:51,202 INFO L226 Difference]: Without dead ends: 788 [2022-02-15 12:15:51,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-02-15 12:15:51,204 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 126 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:51,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 898 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:15:51,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-02-15 12:15:51,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 643. [2022-02-15 12:15:51,222 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) [2022-02-15 12:15:51,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1605 transitions. [2022-02-15 12:15:51,224 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1605 transitions. Word has length 62 [2022-02-15 12:15:51,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:51,224 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1605 transitions. [2022-02-15 12:15:51,224 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) [2022-02-15 12:15:51,225 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1605 transitions. [2022-02-15 12:15:51,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 12:15:51,226 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:51,226 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] [2022-02-15 12:15:51,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 12:15:51,226 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:51,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:51,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1996739535, now seen corresponding path program 11 times [2022-02-15 12:15:51,227 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:51,227 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657725452] [2022-02-15 12:15:51,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:51,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:51,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:51,430 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:51,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657725452] [2022-02-15 12:15:51,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657725452] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:51,431 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:51,431 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 12:15:51,431 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574353915] [2022-02-15 12:15:51,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:51,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 12:15:51,431 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:51,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 12:15:51,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-02-15 12:15:51,432 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) [2022-02-15 12:15:51,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:51,680 INFO L93 Difference]: Finished difference Result 882 states and 2234 transitions. [2022-02-15 12:15:51,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 12:15:51,681 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 [2022-02-15 12:15:51,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:51,684 INFO L225 Difference]: With dead ends: 882 [2022-02-15 12:15:51,684 INFO L226 Difference]: Without dead ends: 819 [2022-02-15 12:15:51,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-02-15 12:15:51,685 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 116 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:51,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 945 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:51,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-02-15 12:15:51,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 683. [2022-02-15 12:15:51,700 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) [2022-02-15 12:15:51,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1715 transitions. [2022-02-15 12:15:51,715 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1715 transitions. Word has length 62 [2022-02-15 12:15:51,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:51,715 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 1715 transitions. [2022-02-15 12:15:51,715 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) [2022-02-15 12:15:51,715 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1715 transitions. [2022-02-15 12:15:51,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 12:15:51,716 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:51,717 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] [2022-02-15 12:15:51,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 12:15:51,717 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:51,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:51,717 INFO L85 PathProgramCache]: Analyzing trace with hash -931759, now seen corresponding path program 12 times [2022-02-15 12:15:51,717 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:51,718 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994355945] [2022-02-15 12:15:51,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:51,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:51,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:51,879 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:51,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994355945] [2022-02-15 12:15:51,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994355945] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:51,880 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:51,880 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 12:15:51,880 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629131580] [2022-02-15 12:15:51,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:51,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 12:15:51,880 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:51,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 12:15:51,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-02-15 12:15:51,881 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) [2022-02-15 12:15:52,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:52,106 INFO L93 Difference]: Finished difference Result 850 states and 2154 transitions. [2022-02-15 12:15:52,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 12:15:52,107 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 [2022-02-15 12:15:52,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:52,111 INFO L225 Difference]: With dead ends: 850 [2022-02-15 12:15:52,111 INFO L226 Difference]: Without dead ends: 787 [2022-02-15 12:15:52,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2022-02-15 12:15:52,112 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 161 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:52,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 801 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:52,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-02-15 12:15:52,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 687. [2022-02-15 12:15:52,126 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) [2022-02-15 12:15:52,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1730 transitions. [2022-02-15 12:15:52,128 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1730 transitions. Word has length 62 [2022-02-15 12:15:52,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:52,128 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 1730 transitions. [2022-02-15 12:15:52,128 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) [2022-02-15 12:15:52,128 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1730 transitions. [2022-02-15 12:15:52,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 12:15:52,130 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:52,130 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] [2022-02-15 12:15:52,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 12:15:52,130 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:52,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:52,131 INFO L85 PathProgramCache]: Analyzing trace with hash -722141871, now seen corresponding path program 13 times [2022-02-15 12:15:52,131 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:52,131 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763120716] [2022-02-15 12:15:52,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:52,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:52,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:52,279 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:52,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763120716] [2022-02-15 12:15:52,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763120716] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:52,279 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:52,279 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 12:15:52,279 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860125950] [2022-02-15 12:15:52,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:52,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 12:15:52,280 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:52,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 12:15:52,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-02-15 12:15:52,281 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) [2022-02-15 12:15:52,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:52,509 INFO L93 Difference]: Finished difference Result 802 states and 2026 transitions. [2022-02-15 12:15:52,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 12:15:52,510 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 [2022-02-15 12:15:52,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:52,513 INFO L225 Difference]: With dead ends: 802 [2022-02-15 12:15:52,513 INFO L226 Difference]: Without dead ends: 739 [2022-02-15 12:15:52,514 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 [2022-02-15 12:15:52,514 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 152 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:52,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 790 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:52,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-02-15 12:15:52,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 691. [2022-02-15 12:15:52,530 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) [2022-02-15 12:15:52,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1737 transitions. [2022-02-15 12:15:52,532 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1737 transitions. Word has length 62 [2022-02-15 12:15:52,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:52,532 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 1737 transitions. [2022-02-15 12:15:52,532 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) [2022-02-15 12:15:52,533 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1737 transitions. [2022-02-15 12:15:52,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 12:15:52,534 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:52,534 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] [2022-02-15 12:15:52,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 12:15:52,535 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:52,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:52,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1987854731, now seen corresponding path program 14 times [2022-02-15 12:15:52,535 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:52,535 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622566008] [2022-02-15 12:15:52,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:52,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:52,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:52,694 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:52,694 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622566008] [2022-02-15 12:15:52,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622566008] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:52,695 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:52,695 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 12:15:52,695 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224064151] [2022-02-15 12:15:52,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:52,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 12:15:52,695 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:52,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 12:15:52,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-02-15 12:15:52,696 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) [2022-02-15 12:15:52,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:52,915 INFO L93 Difference]: Finished difference Result 805 states and 2028 transitions. [2022-02-15 12:15:52,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 12:15:52,915 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 [2022-02-15 12:15:52,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:52,919 INFO L225 Difference]: With dead ends: 805 [2022-02-15 12:15:52,919 INFO L226 Difference]: Without dead ends: 735 [2022-02-15 12:15:52,921 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 [2022-02-15 12:15:52,922 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 159 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:52,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 767 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:52,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-02-15 12:15:52,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 683. [2022-02-15 12:15:52,936 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) [2022-02-15 12:15:52,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1715 transitions. [2022-02-15 12:15:52,938 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1715 transitions. Word has length 62 [2022-02-15 12:15:52,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:52,938 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 1715 transitions. [2022-02-15 12:15:52,939 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) [2022-02-15 12:15:52,939 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1715 transitions. [2022-02-15 12:15:52,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 12:15:52,940 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:52,940 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] [2022-02-15 12:15:52,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 12:15:52,940 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:52,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:52,941 INFO L85 PathProgramCache]: Analyzing trace with hash -127774901, now seen corresponding path program 15 times [2022-02-15 12:15:52,941 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:52,941 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508947052] [2022-02-15 12:15:52,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:52,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:53,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:53,138 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:53,138 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508947052] [2022-02-15 12:15:53,139 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508947052] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:53,139 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:53,139 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 12:15:53,139 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699869481] [2022-02-15 12:15:53,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:53,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 12:15:53,139 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:53,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 12:15:53,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-02-15 12:15:53,140 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) [2022-02-15 12:15:53,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:53,393 INFO L93 Difference]: Finished difference Result 910 states and 2347 transitions. [2022-02-15 12:15:53,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 12:15:53,393 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 [2022-02-15 12:15:53,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:53,397 INFO L225 Difference]: With dead ends: 910 [2022-02-15 12:15:53,397 INFO L226 Difference]: Without dead ends: 847 [2022-02-15 12:15:53,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-02-15 12:15:53,398 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 108 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:53,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 869 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:53,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-02-15 12:15:53,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 691. [2022-02-15 12:15:53,412 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) [2022-02-15 12:15:53,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1749 transitions. [2022-02-15 12:15:53,413 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1749 transitions. Word has length 62 [2022-02-15 12:15:53,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:53,413 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 1749 transitions. [2022-02-15 12:15:53,414 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) [2022-02-15 12:15:53,414 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1749 transitions. [2022-02-15 12:15:53,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 12:15:53,415 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:53,415 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] [2022-02-15 12:15:53,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 12:15:53,416 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:53,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:53,416 INFO L85 PathProgramCache]: Analyzing trace with hash -848985013, now seen corresponding path program 16 times [2022-02-15 12:15:53,416 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:53,416 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211003167] [2022-02-15 12:15:53,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:53,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:53,551 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:53,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211003167] [2022-02-15 12:15:53,551 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211003167] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:53,551 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:53,552 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 12:15:53,552 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833046265] [2022-02-15 12:15:53,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:53,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 12:15:53,552 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:53,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 12:15:53,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-02-15 12:15:53,553 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) [2022-02-15 12:15:53,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:53,746 INFO L93 Difference]: Finished difference Result 866 states and 2230 transitions. [2022-02-15 12:15:53,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 12:15:53,747 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 [2022-02-15 12:15:53,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:53,750 INFO L225 Difference]: With dead ends: 866 [2022-02-15 12:15:53,750 INFO L226 Difference]: Without dead ends: 803 [2022-02-15 12:15:53,751 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 [2022-02-15 12:15:53,751 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 137 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:53,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 593 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:53,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-02-15 12:15:53,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 695. [2022-02-15 12:15:53,765 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) [2022-02-15 12:15:53,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1756 transitions. [2022-02-15 12:15:53,766 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1756 transitions. Word has length 62 [2022-02-15 12:15:53,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:53,767 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 1756 transitions. [2022-02-15 12:15:53,767 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) [2022-02-15 12:15:53,767 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1756 transitions. [2022-02-15 12:15:53,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 12:15:53,769 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:53,769 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] [2022-02-15 12:15:53,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 12:15:53,769 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:53,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:53,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1861011589, now seen corresponding path program 17 times [2022-02-15 12:15:53,770 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:53,770 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365701994] [2022-02-15 12:15:53,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:53,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:53,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:53,930 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:53,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365701994] [2022-02-15 12:15:53,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365701994] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:53,930 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:53,931 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 12:15:53,931 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601036106] [2022-02-15 12:15:53,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:53,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 12:15:53,931 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:53,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 12:15:53,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-02-15 12:15:53,932 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) [2022-02-15 12:15:54,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:54,183 INFO L93 Difference]: Finished difference Result 869 states and 2232 transitions. [2022-02-15 12:15:54,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 12:15:54,184 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 [2022-02-15 12:15:54,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:54,187 INFO L225 Difference]: With dead ends: 869 [2022-02-15 12:15:54,187 INFO L226 Difference]: Without dead ends: 799 [2022-02-15 12:15:54,188 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 [2022-02-15 12:15:54,188 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 123 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 721 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 [2022-02-15 12:15:54,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 721 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:54,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-02-15 12:15:54,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 687. [2022-02-15 12:15:54,201 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) [2022-02-15 12:15:54,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1734 transitions. [2022-02-15 12:15:54,202 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1734 transitions. Word has length 62 [2022-02-15 12:15:54,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:54,202 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 1734 transitions. [2022-02-15 12:15:54,203 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) [2022-02-15 12:15:54,203 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1734 transitions. [2022-02-15 12:15:54,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 12:15:54,204 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:54,204 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] [2022-02-15 12:15:54,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 12:15:54,204 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:54,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:54,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1047857609, now seen corresponding path program 18 times [2022-02-15 12:15:54,205 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:54,205 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510131262] [2022-02-15 12:15:54,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:54,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:54,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:54,372 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:54,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510131262] [2022-02-15 12:15:54,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510131262] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:54,372 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:54,372 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 12:15:54,373 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349631214] [2022-02-15 12:15:54,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:54,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 12:15:54,373 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:54,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 12:15:54,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-02-15 12:15:54,374 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) [2022-02-15 12:15:54,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:54,670 INFO L93 Difference]: Finished difference Result 850 states and 2182 transitions. [2022-02-15 12:15:54,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 12:15:54,671 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 [2022-02-15 12:15:54,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:54,673 INFO L225 Difference]: With dead ends: 850 [2022-02-15 12:15:54,673 INFO L226 Difference]: Without dead ends: 787 [2022-02-15 12:15:54,674 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 [2022-02-15 12:15:54,674 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 137 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:54,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 763 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:15:54,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-02-15 12:15:54,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 695. [2022-02-15 12:15:54,687 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) [2022-02-15 12:15:54,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1756 transitions. [2022-02-15 12:15:54,689 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1756 transitions. Word has length 62 [2022-02-15 12:15:54,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:54,689 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 1756 transitions. [2022-02-15 12:15:54,689 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) [2022-02-15 12:15:54,689 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1756 transitions. [2022-02-15 12:15:54,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 12:15:54,690 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:54,691 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] [2022-02-15 12:15:54,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-15 12:15:54,691 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:54,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:54,691 INFO L85 PathProgramCache]: Analyzing trace with hash -537113085, now seen corresponding path program 19 times [2022-02-15 12:15:54,691 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:54,691 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351413491] [2022-02-15 12:15:54,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:54,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:54,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:54,841 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:54,842 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351413491] [2022-02-15 12:15:54,842 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351413491] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:54,842 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:54,842 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 12:15:54,842 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274708304] [2022-02-15 12:15:54,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:54,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 12:15:54,842 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:54,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 12:15:54,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-02-15 12:15:54,843 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) [2022-02-15 12:15:55,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:55,070 INFO L93 Difference]: Finished difference Result 853 states and 2184 transitions. [2022-02-15 12:15:55,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 12:15:55,071 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 [2022-02-15 12:15:55,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:55,074 INFO L225 Difference]: With dead ends: 853 [2022-02-15 12:15:55,074 INFO L226 Difference]: Without dead ends: 783 [2022-02-15 12:15:55,074 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 [2022-02-15 12:15:55,074 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 106 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:55,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 793 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:55,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2022-02-15 12:15:55,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 691. [2022-02-15 12:15:55,089 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) [2022-02-15 12:15:55,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1745 transitions. [2022-02-15 12:15:55,090 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1745 transitions. Word has length 62 [2022-02-15 12:15:55,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:55,090 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 1745 transitions. [2022-02-15 12:15:55,091 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) [2022-02-15 12:15:55,091 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1745 transitions. [2022-02-15 12:15:55,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 12:15:55,092 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:55,092 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] [2022-02-15 12:15:55,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-15 12:15:55,093 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:55,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:55,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1823722031, now seen corresponding path program 20 times [2022-02-15 12:15:55,093 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:55,093 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058806617] [2022-02-15 12:15:55,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:55,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:55,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:55,249 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:55,249 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058806617] [2022-02-15 12:15:55,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058806617] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:55,249 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:55,249 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 12:15:55,249 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791607720] [2022-02-15 12:15:55,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:55,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 12:15:55,251 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:55,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 12:15:55,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-02-15 12:15:55,252 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) [2022-02-15 12:15:55,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:55,525 INFO L93 Difference]: Finished difference Result 894 states and 2293 transitions. [2022-02-15 12:15:55,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 12:15:55,527 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 [2022-02-15 12:15:55,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:55,531 INFO L225 Difference]: With dead ends: 894 [2022-02-15 12:15:55,531 INFO L226 Difference]: Without dead ends: 828 [2022-02-15 12:15:55,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-02-15 12:15:55,532 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 130 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:55,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 968 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:15:55,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2022-02-15 12:15:55,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 683. [2022-02-15 12:15:55,544 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) [2022-02-15 12:15:55,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1715 transitions. [2022-02-15 12:15:55,546 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1715 transitions. Word has length 62 [2022-02-15 12:15:55,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:55,546 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 1715 transitions. [2022-02-15 12:15:55,546 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) [2022-02-15 12:15:55,546 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1715 transitions. [2022-02-15 12:15:55,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-15 12:15:55,548 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:55,548 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] [2022-02-15 12:15:55,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-15 12:15:55,548 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:55,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:55,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1062789427, now seen corresponding path program 1 times [2022-02-15 12:15:55,548 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:55,549 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107139547] [2022-02-15 12:15:55,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:55,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:55,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:55,574 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:55,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107139547] [2022-02-15 12:15:55,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107139547] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:55,574 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:55,574 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 12:15:55,575 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383691253] [2022-02-15 12:15:55,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:55,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 12:15:55,575 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:55,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 12:15:55,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 12:15:55,576 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) [2022-02-15 12:15:55,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:55,650 INFO L93 Difference]: Finished difference Result 987 states and 2483 transitions. [2022-02-15 12:15:55,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 12:15:55,651 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 [2022-02-15 12:15:55,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:55,655 INFO L225 Difference]: With dead ends: 987 [2022-02-15 12:15:55,655 INFO L226 Difference]: Without dead ends: 906 [2022-02-15 12:15:55,655 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 [2022-02-15 12:15:55,656 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, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:55,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 330 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:55,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2022-02-15 12:15:55,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 621. [2022-02-15 12:15:55,668 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) [2022-02-15 12:15:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 1567 transitions. [2022-02-15 12:15:55,669 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 1567 transitions. Word has length 66 [2022-02-15 12:15:55,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:55,669 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 1567 transitions. [2022-02-15 12:15:55,670 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) [2022-02-15 12:15:55,670 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 1567 transitions. [2022-02-15 12:15:55,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-15 12:15:55,671 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:55,671 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] [2022-02-15 12:15:55,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-15 12:15:55,671 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:55,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:55,672 INFO L85 PathProgramCache]: Analyzing trace with hash -80553619, now seen corresponding path program 1 times [2022-02-15 12:15:55,672 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:55,672 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223871429] [2022-02-15 12:15:55,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:55,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:55,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:55,697 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:55,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223871429] [2022-02-15 12:15:55,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223871429] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:55,697 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:55,697 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 12:15:55,697 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417393250] [2022-02-15 12:15:55,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:55,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 12:15:55,697 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:55,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 12:15:55,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 12:15:55,698 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) [2022-02-15 12:15:55,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:55,801 INFO L93 Difference]: Finished difference Result 949 states and 2424 transitions. [2022-02-15 12:15:55,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 12:15:55,801 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 [2022-02-15 12:15:55,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:55,805 INFO L225 Difference]: With dead ends: 949 [2022-02-15 12:15:55,805 INFO L226 Difference]: Without dead ends: 949 [2022-02-15 12:15:55,806 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 [2022-02-15 12:15:55,806 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 128 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:55,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 334 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:55,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2022-02-15 12:15:55,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 637. [2022-02-15 12:15:55,819 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) [2022-02-15 12:15:55,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1615 transitions. [2022-02-15 12:15:55,820 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1615 transitions. Word has length 66 [2022-02-15 12:15:55,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:55,821 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 1615 transitions. [2022-02-15 12:15:55,821 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) [2022-02-15 12:15:55,821 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1615 transitions. [2022-02-15 12:15:55,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-15 12:15:55,822 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:55,823 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] [2022-02-15 12:15:55,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-15 12:15:55,823 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:55,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:55,823 INFO L85 PathProgramCache]: Analyzing trace with hash 626763185, now seen corresponding path program 2 times [2022-02-15 12:15:55,823 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:55,824 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174578342] [2022-02-15 12:15:55,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:55,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:55,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:55,853 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:55,853 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174578342] [2022-02-15 12:15:55,853 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174578342] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:55,853 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:55,853 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 12:15:55,854 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940463487] [2022-02-15 12:15:55,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:55,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 12:15:55,856 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:55,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 12:15:55,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 12:15:55,857 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) [2022-02-15 12:15:55,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:55,933 INFO L93 Difference]: Finished difference Result 1128 states and 2881 transitions. [2022-02-15 12:15:55,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 12:15:55,933 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 [2022-02-15 12:15:55,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:55,948 INFO L225 Difference]: With dead ends: 1128 [2022-02-15 12:15:55,949 INFO L226 Difference]: Without dead ends: 1112 [2022-02-15 12:15:55,949 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 [2022-02-15 12:15:55,950 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, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:55,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 317 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:55,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2022-02-15 12:15:55,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 641. [2022-02-15 12:15:55,976 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) [2022-02-15 12:15:55,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1630 transitions. [2022-02-15 12:15:55,978 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1630 transitions. Word has length 66 [2022-02-15 12:15:55,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:55,978 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 1630 transitions. [2022-02-15 12:15:55,979 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) [2022-02-15 12:15:55,979 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1630 transitions. [2022-02-15 12:15:55,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-15 12:15:55,980 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:55,980 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] [2022-02-15 12:15:55,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-15 12:15:55,981 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:55,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:55,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1732914939, now seen corresponding path program 2 times [2022-02-15 12:15:55,981 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:55,981 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467916410] [2022-02-15 12:15:55,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:55,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:56,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:56,006 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:56,006 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467916410] [2022-02-15 12:15:56,006 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467916410] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:56,007 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:56,007 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 12:15:56,007 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849950307] [2022-02-15 12:15:56,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:56,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 12:15:56,007 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:56,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 12:15:56,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 12:15:56,008 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) [2022-02-15 12:15:56,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:56,085 INFO L93 Difference]: Finished difference Result 1299 states and 3298 transitions. [2022-02-15 12:15:56,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 12:15:56,085 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 [2022-02-15 12:15:56,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:56,089 INFO L225 Difference]: With dead ends: 1299 [2022-02-15 12:15:56,089 INFO L226 Difference]: Without dead ends: 1299 [2022-02-15 12:15:56,090 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 [2022-02-15 12:15:56,090 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, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:56,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 356 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:56,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2022-02-15 12:15:56,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 657. [2022-02-15 12:15:56,109 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) [2022-02-15 12:15:56,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1678 transitions. [2022-02-15 12:15:56,110 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1678 transitions. Word has length 66 [2022-02-15 12:15:56,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:56,111 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 1678 transitions. [2022-02-15 12:15:56,111 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) [2022-02-15 12:15:56,111 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1678 transitions. [2022-02-15 12:15:56,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-15 12:15:56,112 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:56,112 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] [2022-02-15 12:15:56,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-15 12:15:56,113 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:56,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:56,113 INFO L85 PathProgramCache]: Analyzing trace with hash 2046949573, now seen corresponding path program 3 times [2022-02-15 12:15:56,113 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:56,113 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511836393] [2022-02-15 12:15:56,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:56,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:56,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:56,139 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:56,139 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511836393] [2022-02-15 12:15:56,139 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511836393] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:56,140 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:56,140 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 12:15:56,140 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955393537] [2022-02-15 12:15:56,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:56,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 12:15:56,141 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:56,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 12:15:56,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 12:15:56,141 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) [2022-02-15 12:15:56,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:56,226 INFO L93 Difference]: Finished difference Result 1084 states and 2770 transitions. [2022-02-15 12:15:56,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 12:15:56,227 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 [2022-02-15 12:15:56,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:56,230 INFO L225 Difference]: With dead ends: 1084 [2022-02-15 12:15:56,230 INFO L226 Difference]: Without dead ends: 1065 [2022-02-15 12:15:56,230 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 [2022-02-15 12:15:56,230 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, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:56,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 321 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:56,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2022-02-15 12:15:56,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 657. [2022-02-15 12:15:56,244 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) [2022-02-15 12:15:56,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1674 transitions. [2022-02-15 12:15:56,245 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1674 transitions. Word has length 66 [2022-02-15 12:15:56,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:56,246 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 1674 transitions. [2022-02-15 12:15:56,246 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) [2022-02-15 12:15:56,246 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1674 transitions. [2022-02-15 12:15:56,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-15 12:15:56,247 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:56,247 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] [2022-02-15 12:15:56,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-15 12:15:56,248 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:56,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:56,248 INFO L85 PathProgramCache]: Analyzing trace with hash 236497677, now seen corresponding path program 3 times [2022-02-15 12:15:56,248 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:56,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418125755] [2022-02-15 12:15:56,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:56,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:56,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:56,273 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:56,274 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418125755] [2022-02-15 12:15:56,274 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418125755] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:56,274 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:56,274 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 12:15:56,274 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181246638] [2022-02-15 12:15:56,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:56,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 12:15:56,274 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:56,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 12:15:56,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 12:15:56,275 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) [2022-02-15 12:15:56,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:56,365 INFO L93 Difference]: Finished difference Result 1112 states and 2849 transitions. [2022-02-15 12:15:56,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 12:15:56,365 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 [2022-02-15 12:15:56,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:56,368 INFO L225 Difference]: With dead ends: 1112 [2022-02-15 12:15:56,368 INFO L226 Difference]: Without dead ends: 1112 [2022-02-15 12:15:56,368 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 [2022-02-15 12:15:56,369 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, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:56,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 338 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:56,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2022-02-15 12:15:56,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 657. [2022-02-15 12:15:56,382 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) [2022-02-15 12:15:56,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1674 transitions. [2022-02-15 12:15:56,384 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1674 transitions. Word has length 66 [2022-02-15 12:15:56,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:56,384 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 1674 transitions. [2022-02-15 12:15:56,384 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) [2022-02-15 12:15:56,384 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1674 transitions. [2022-02-15 12:15:56,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-15 12:15:56,386 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:56,386 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] [2022-02-15 12:15:56,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-15 12:15:56,386 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:56,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:56,386 INFO L85 PathProgramCache]: Analyzing trace with hash -228837771, now seen corresponding path program 4 times [2022-02-15 12:15:56,386 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:56,386 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523206653] [2022-02-15 12:15:56,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:56,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:56,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:56,413 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:56,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523206653] [2022-02-15 12:15:56,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523206653] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:56,413 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:56,413 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 12:15:56,413 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461409734] [2022-02-15 12:15:56,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:56,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 12:15:56,413 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:56,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 12:15:56,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 12:15:56,414 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) [2022-02-15 12:15:56,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:56,485 INFO L93 Difference]: Finished difference Result 967 states and 2471 transitions. [2022-02-15 12:15:56,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 12:15:56,485 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 [2022-02-15 12:15:56,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:56,488 INFO L225 Difference]: With dead ends: 967 [2022-02-15 12:15:56,488 INFO L226 Difference]: Without dead ends: 919 [2022-02-15 12:15:56,488 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 [2022-02-15 12:15:56,489 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 [2022-02-15 12:15:56,489 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] [2022-02-15 12:15:56,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-02-15 12:15:56,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 625. [2022-02-15 12:15:56,501 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) [2022-02-15 12:15:56,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1586 transitions. [2022-02-15 12:15:56,502 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1586 transitions. Word has length 66 [2022-02-15 12:15:56,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:56,503 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1586 transitions. [2022-02-15 12:15:56,503 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) [2022-02-15 12:15:56,503 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1586 transitions. [2022-02-15 12:15:56,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-15 12:15:56,504 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:56,504 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] [2022-02-15 12:15:56,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-15 12:15:56,505 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:56,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:56,505 INFO L85 PathProgramCache]: Analyzing trace with hash -583910423, now seen corresponding path program 4 times [2022-02-15 12:15:56,505 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:56,505 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257106248] [2022-02-15 12:15:56,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:56,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:56,530 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:56,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257106248] [2022-02-15 12:15:56,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257106248] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:56,530 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:56,530 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 12:15:56,530 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772282398] [2022-02-15 12:15:56,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:56,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 12:15:56,531 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:56,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 12:15:56,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 12:15:56,531 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) [2022-02-15 12:15:56,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:56,610 INFO L93 Difference]: Finished difference Result 959 states and 2469 transitions. [2022-02-15 12:15:56,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 12:15:56,610 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 [2022-02-15 12:15:56,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:56,613 INFO L225 Difference]: With dead ends: 959 [2022-02-15 12:15:56,613 INFO L226 Difference]: Without dead ends: 959 [2022-02-15 12:15:56,613 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 [2022-02-15 12:15:56,613 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, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:56,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 342 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:56,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-02-15 12:15:56,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 625. [2022-02-15 12:15:56,625 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) [2022-02-15 12:15:56,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1586 transitions. [2022-02-15 12:15:56,627 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1586 transitions. Word has length 66 [2022-02-15 12:15:56,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:56,627 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1586 transitions. [2022-02-15 12:15:56,627 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) [2022-02-15 12:15:56,627 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1586 transitions. [2022-02-15 12:15:56,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-15 12:15:56,629 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:56,629 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] [2022-02-15 12:15:56,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-15 12:15:56,629 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:56,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:56,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1624806385, now seen corresponding path program 5 times [2022-02-15 12:15:56,630 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:56,630 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850005909] [2022-02-15 12:15:56,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:56,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:56,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:56,656 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:56,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850005909] [2022-02-15 12:15:56,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850005909] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:56,656 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:56,656 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 12:15:56,656 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067755013] [2022-02-15 12:15:56,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:56,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 12:15:56,657 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:56,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 12:15:56,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 12:15:56,657 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) [2022-02-15 12:15:56,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:56,749 INFO L93 Difference]: Finished difference Result 1086 states and 2779 transitions. [2022-02-15 12:15:56,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 12:15:56,749 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 [2022-02-15 12:15:56,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:56,752 INFO L225 Difference]: With dead ends: 1086 [2022-02-15 12:15:56,752 INFO L226 Difference]: Without dead ends: 1070 [2022-02-15 12:15:56,752 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 [2022-02-15 12:15:56,753 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 116 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:56,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 311 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:56,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2022-02-15 12:15:56,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 625. [2022-02-15 12:15:56,765 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) [2022-02-15 12:15:56,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1582 transitions. [2022-02-15 12:15:56,767 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1582 transitions. Word has length 66 [2022-02-15 12:15:56,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:56,767 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1582 transitions. [2022-02-15 12:15:56,767 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) [2022-02-15 12:15:56,767 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1582 transitions. [2022-02-15 12:15:56,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-15 12:15:56,769 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:56,787 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] [2022-02-15 12:15:56,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-15 12:15:56,788 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:56,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:56,788 INFO L85 PathProgramCache]: Analyzing trace with hash -734871739, now seen corresponding path program 5 times [2022-02-15 12:15:56,788 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:56,788 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507040688] [2022-02-15 12:15:56,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:56,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:56,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:56,812 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:56,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507040688] [2022-02-15 12:15:56,812 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507040688] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:56,812 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:56,812 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 12:15:56,812 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313198392] [2022-02-15 12:15:56,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:56,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 12:15:56,812 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:56,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 12:15:56,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 12:15:56,813 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) [2022-02-15 12:15:56,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:56,907 INFO L93 Difference]: Finished difference Result 1257 states and 3196 transitions. [2022-02-15 12:15:56,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 12:15:56,908 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 [2022-02-15 12:15:56,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:56,910 INFO L225 Difference]: With dead ends: 1257 [2022-02-15 12:15:56,911 INFO L226 Difference]: Without dead ends: 1257 [2022-02-15 12:15:56,911 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 [2022-02-15 12:15:56,911 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 132 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-02-15 12:15:56,911 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] [2022-02-15 12:15:56,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2022-02-15 12:15:56,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 625. [2022-02-15 12:15:56,925 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) [2022-02-15 12:15:56,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1582 transitions. [2022-02-15 12:15:56,926 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1582 transitions. Word has length 66 [2022-02-15 12:15:56,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:56,926 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1582 transitions. [2022-02-15 12:15:56,927 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) [2022-02-15 12:15:56,927 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1582 transitions. [2022-02-15 12:15:56,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-15 12:15:56,928 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:56,928 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] [2022-02-15 12:15:56,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-15 12:15:56,928 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:56,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:56,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1249974523, now seen corresponding path program 6 times [2022-02-15 12:15:56,929 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:56,929 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871451482] [2022-02-15 12:15:56,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:56,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:56,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:56,954 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:56,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871451482] [2022-02-15 12:15:56,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871451482] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:56,954 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:56,954 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 12:15:56,954 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120619012] [2022-02-15 12:15:56,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:56,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 12:15:56,955 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:56,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 12:15:56,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 12:15:56,955 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) [2022-02-15 12:15:57,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:57,035 INFO L93 Difference]: Finished difference Result 1018 states and 2598 transitions. [2022-02-15 12:15:57,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 12:15:57,036 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 [2022-02-15 12:15:57,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:57,038 INFO L225 Difference]: With dead ends: 1018 [2022-02-15 12:15:57,038 INFO L226 Difference]: Without dead ends: 999 [2022-02-15 12:15:57,038 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 [2022-02-15 12:15:57,039 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, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:57,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 302 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:57,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-02-15 12:15:57,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 625. [2022-02-15 12:15:57,051 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) [2022-02-15 12:15:57,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1578 transitions. [2022-02-15 12:15:57,052 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1578 transitions. Word has length 66 [2022-02-15 12:15:57,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:57,053 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1578 transitions. [2022-02-15 12:15:57,053 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) [2022-02-15 12:15:57,053 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1578 transitions. [2022-02-15 12:15:57,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-15 12:15:57,054 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:57,054 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] [2022-02-15 12:15:57,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-15 12:15:57,055 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:57,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:57,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1234540877, now seen corresponding path program 6 times [2022-02-15 12:15:57,055 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:57,055 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096462607] [2022-02-15 12:15:57,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:57,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:57,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:57,079 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:57,079 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096462607] [2022-02-15 12:15:57,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096462607] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:57,080 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:57,080 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 12:15:57,080 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184767213] [2022-02-15 12:15:57,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:57,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 12:15:57,080 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:57,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 12:15:57,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 12:15:57,081 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) [2022-02-15 12:15:57,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:57,148 INFO L93 Difference]: Finished difference Result 862 states and 2198 transitions. [2022-02-15 12:15:57,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 12:15:57,148 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 [2022-02-15 12:15:57,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:57,150 INFO L225 Difference]: With dead ends: 862 [2022-02-15 12:15:57,150 INFO L226 Difference]: Without dead ends: 862 [2022-02-15 12:15:57,150 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 [2022-02-15 12:15:57,151 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 [2022-02-15 12:15:57,151 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] [2022-02-15 12:15:57,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2022-02-15 12:15:57,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 621. [2022-02-15 12:15:57,162 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) [2022-02-15 12:15:57,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 1567 transitions. [2022-02-15 12:15:57,164 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 1567 transitions. Word has length 66 [2022-02-15 12:15:57,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:57,164 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 1567 transitions. [2022-02-15 12:15:57,164 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) [2022-02-15 12:15:57,164 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 1567 transitions. [2022-02-15 12:15:57,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:15:57,166 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:57,166 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] [2022-02-15 12:15:57,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-15 12:15:57,166 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:57,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:57,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1550680847, now seen corresponding path program 1 times [2022-02-15 12:15:57,166 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:57,167 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87699161] [2022-02-15 12:15:57,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:57,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:57,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:57,324 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:57,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87699161] [2022-02-15 12:15:57,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87699161] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:15:57,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530055322] [2022-02-15 12:15:57,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:57,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:15:57,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:15:57,331 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) [2022-02-15 12:15:57,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-15 12:15:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:57,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:15:57,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:15:57,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:57,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:15:58,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:58,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530055322] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:15:58,787 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:15:58,787 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:15:58,787 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360437126] [2022-02-15 12:15:58,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:15:58,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:15:58,787 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:58,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:15:58,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=995, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:15:58,789 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) [2022-02-15 12:16:00,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:16:00,806 INFO L93 Difference]: Finished difference Result 1332 states and 3500 transitions. [2022-02-15 12:16:00,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-15 12:16:00,806 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 [2022-02-15 12:16:00,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:16:00,810 INFO L225 Difference]: With dead ends: 1332 [2022-02-15 12:16:00,810 INFO L226 Difference]: Without dead ends: 1257 [2022-02-15 12:16:00,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=766, Invalid=4636, Unknown=0, NotChecked=0, Total=5402 [2022-02-15 12:16:00,812 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 545 mSDsluCounter, 2177 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:16:00,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 2215 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:16:00,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2022-02-15 12:16:00,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 809. [2022-02-15 12:16:00,829 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) [2022-02-15 12:16:00,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 2079 transitions. [2022-02-15 12:16:00,831 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 2079 transitions. Word has length 70 [2022-02-15 12:16:00,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:16:00,832 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 2079 transitions. [2022-02-15 12:16:00,832 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) [2022-02-15 12:16:00,832 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 2079 transitions. [2022-02-15 12:16:00,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:16:00,834 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:16:00,834 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] [2022-02-15 12:16:00,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-15 12:16:01,047 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 [2022-02-15 12:16:01,048 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:16:01,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:16:01,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1707982699, now seen corresponding path program 2 times [2022-02-15 12:16:01,048 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:16:01,048 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998263144] [2022-02-15 12:16:01,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:16:01,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:16:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:16:01,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:01,236 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:16:01,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998263144] [2022-02-15 12:16:01,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998263144] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:16:01,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709388578] [2022-02-15 12:16:01,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:16:01,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:16:01,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:16:01,240 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) [2022-02-15 12:16:01,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-15 12:16:01,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:16:01,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:16:01,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:16:01,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:16:01,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:01,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:16:02,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:02,558 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709388578] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:16:02,558 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:16:02,558 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:16:02,558 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365128897] [2022-02-15 12:16:02,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:16:02,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:16:02,559 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:16:02,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:16:02,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=992, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:16:02,560 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) [2022-02-15 12:16:05,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:16:05,434 INFO L93 Difference]: Finished difference Result 1555 states and 4131 transitions. [2022-02-15 12:16:05,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-15 12:16:05,434 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 [2022-02-15 12:16:05,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:16:05,439 INFO L225 Difference]: With dead ends: 1555 [2022-02-15 12:16:05,439 INFO L226 Difference]: Without dead ends: 1480 [2022-02-15 12:16:05,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2481 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1151, Invalid=7039, Unknown=0, NotChecked=0, Total=8190 [2022-02-15 12:16:05,441 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 574 mSDsluCounter, 2946 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 2938 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:16:05,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 2938 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:16:05,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2022-02-15 12:16:05,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 837. [2022-02-15 12:16:05,464 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) [2022-02-15 12:16:05,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 2164 transitions. [2022-02-15 12:16:05,466 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 2164 transitions. Word has length 70 [2022-02-15 12:16:05,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:16:05,466 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 2164 transitions. [2022-02-15 12:16:05,467 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) [2022-02-15 12:16:05,467 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 2164 transitions. [2022-02-15 12:16:05,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:16:05,469 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:16:05,469 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] [2022-02-15 12:16:05,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-15 12:16:05,683 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 [2022-02-15 12:16:05,684 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:16:05,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:16:05,684 INFO L85 PathProgramCache]: Analyzing trace with hash -4106897, now seen corresponding path program 3 times [2022-02-15 12:16:05,684 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:16:05,684 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734003015] [2022-02-15 12:16:05,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:16:05,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:16:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:16:05,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:05,877 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:16:05,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734003015] [2022-02-15 12:16:05,877 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734003015] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:16:05,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681900975] [2022-02-15 12:16:05,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:16:05,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:16:05,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:16:05,878 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) [2022-02-15 12:16:05,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-15 12:16:05,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-15 12:16:05,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:16:05,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:16:05,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:16:06,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:06,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:16:07,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:07,106 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681900975] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:16:07,106 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:16:07,106 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:16:07,106 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731411170] [2022-02-15 12:16:07,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:16:07,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:16:07,107 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:16:07,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:16:07,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:16:07,107 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) [2022-02-15 12:16:09,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:16:09,047 INFO L93 Difference]: Finished difference Result 1564 states and 4070 transitions. [2022-02-15 12:16:09,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-15 12:16:09,047 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 [2022-02-15 12:16:09,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:16:09,052 INFO L225 Difference]: With dead ends: 1564 [2022-02-15 12:16:09,052 INFO L226 Difference]: Without dead ends: 1438 [2022-02-15 12:16:09,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1901 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=915, Invalid=5727, Unknown=0, NotChecked=0, Total=6642 [2022-02-15 12:16:09,055 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 529 mSDsluCounter, 2411 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 2432 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:16:09,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 2432 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:16:09,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2022-02-15 12:16:09,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 849. [2022-02-15 12:16:09,099 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) [2022-02-15 12:16:09,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 2197 transitions. [2022-02-15 12:16:09,103 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 2197 transitions. Word has length 70 [2022-02-15 12:16:09,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:16:09,103 INFO L470 AbstractCegarLoop]: Abstraction has 849 states and 2197 transitions. [2022-02-15 12:16:09,103 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) [2022-02-15 12:16:09,103 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 2197 transitions. [2022-02-15 12:16:09,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:16:09,106 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:16:09,106 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] [2022-02-15 12:16:09,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-15 12:16:09,311 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 [2022-02-15 12:16:09,312 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:16:09,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:16:09,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1589077591, now seen corresponding path program 4 times [2022-02-15 12:16:09,312 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:16:09,312 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847910116] [2022-02-15 12:16:09,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:16:09,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:16:09,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:16:09,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:09,490 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:16:09,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847910116] [2022-02-15 12:16:09,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847910116] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:16:09,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096944611] [2022-02-15 12:16:09,490 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:16:09,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:16:09,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:16:09,492 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) [2022-02-15 12:16:09,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-15 12:16:09,559 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:16:09,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:16:09,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-15 12:16:09,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:16:09,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:09,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:16:10,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:10,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096944611] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:16:10,503 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:16:10,503 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2022-02-15 12:16:10,503 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553172357] [2022-02-15 12:16:10,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:16:10,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 12:16:10,504 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:16:10,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 12:16:10,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2022-02-15 12:16:10,505 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) [2022-02-15 12:16:11,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:16:11,797 INFO L93 Difference]: Finished difference Result 1357 states and 3523 transitions. [2022-02-15 12:16:11,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-15 12:16:11,797 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 [2022-02-15 12:16:11,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:16:11,801 INFO L225 Difference]: With dead ends: 1357 [2022-02-15 12:16:11,801 INFO L226 Difference]: Without dead ends: 1287 [2022-02-15 12:16:11,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1446 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=829, Invalid=4573, Unknown=0, NotChecked=0, Total=5402 [2022-02-15 12:16:11,803 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 453 mSDsluCounter, 2120 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 2196 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:16:11,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 2196 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:16:11,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2022-02-15 12:16:11,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 929. [2022-02-15 12:16:11,824 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) [2022-02-15 12:16:11,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 2421 transitions. [2022-02-15 12:16:11,826 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 2421 transitions. Word has length 70 [2022-02-15 12:16:11,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:16:11,827 INFO L470 AbstractCegarLoop]: Abstraction has 929 states and 2421 transitions. [2022-02-15 12:16:11,827 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) [2022-02-15 12:16:11,827 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 2421 transitions. [2022-02-15 12:16:11,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:16:11,829 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:16:11,829 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 12:16:11,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-15 12:16:12,054 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 [2022-02-15 12:16:12,055 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:16:12,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:16:12,055 INFO L85 PathProgramCache]: Analyzing trace with hash 742294319, now seen corresponding path program 5 times [2022-02-15 12:16:12,055 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:16:12,055 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754458918] [2022-02-15 12:16:12,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:16:12,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:16:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:16:12,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:12,235 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:16:12,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754458918] [2022-02-15 12:16:12,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754458918] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:16:12,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778413783] [2022-02-15 12:16:12,235 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:16:12,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:16:12,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:16:12,240 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) [2022-02-15 12:16:12,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-15 12:16:12,308 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 12:16:12,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:16:12,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:16:12,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:16:12,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:12,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:16:13,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:13,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778413783] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:16:13,168 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:16:13,168 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:16:13,168 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140734305] [2022-02-15 12:16:13,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:16:13,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:16:13,169 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:16:13,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:16:13,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:16:13,170 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) [2022-02-15 12:16:14,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:16:14,700 INFO L93 Difference]: Finished difference Result 1578 states and 4174 transitions. [2022-02-15 12:16:14,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-15 12:16:14,700 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 [2022-02-15 12:16:14,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:16:14,705 INFO L225 Difference]: With dead ends: 1578 [2022-02-15 12:16:14,705 INFO L226 Difference]: Without dead ends: 1515 [2022-02-15 12:16:14,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1802 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1105, Invalid=5375, Unknown=0, NotChecked=0, Total=6480 [2022-02-15 12:16:14,707 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 600 mSDsluCounter, 3221 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 3208 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:16:14,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 3208 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:16:14,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2022-02-15 12:16:14,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 993. [2022-02-15 12:16:14,729 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) [2022-02-15 12:16:14,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 2625 transitions. [2022-02-15 12:16:14,732 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 2625 transitions. Word has length 70 [2022-02-15 12:16:14,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:16:14,732 INFO L470 AbstractCegarLoop]: Abstraction has 993 states and 2625 transitions. [2022-02-15 12:16:14,732 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) [2022-02-15 12:16:14,732 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 2625 transitions. [2022-02-15 12:16:14,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:16:14,735 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:16:14,735 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] [2022-02-15 12:16:14,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-15 12:16:14,951 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 [2022-02-15 12:16:14,952 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:16:14,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:16:14,952 INFO L85 PathProgramCache]: Analyzing trace with hash -969795277, now seen corresponding path program 6 times [2022-02-15 12:16:14,952 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:16:14,952 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858320315] [2022-02-15 12:16:14,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:16:14,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:16:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:16:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:15,102 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:16:15,102 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858320315] [2022-02-15 12:16:15,102 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858320315] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:16:15,102 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827843798] [2022-02-15 12:16:15,102 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:16:15,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:16:15,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:16:15,103 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) [2022-02-15 12:16:15,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-15 12:16:15,164 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-15 12:16:15,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:16:15,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:16:15,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:16:15,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:15,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:16:16,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:16,061 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827843798] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:16:16,061 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:16:16,061 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:16:16,061 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257841848] [2022-02-15 12:16:16,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:16:16,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:16:16,062 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:16:16,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:16:16,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:16:16,063 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) [2022-02-15 12:16:17,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:16:17,440 INFO L93 Difference]: Finished difference Result 1377 states and 3662 transitions. [2022-02-15 12:16:17,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-15 12:16:17,441 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 [2022-02-15 12:16:17,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:16:17,446 INFO L225 Difference]: With dead ends: 1377 [2022-02-15 12:16:17,446 INFO L226 Difference]: Without dead ends: 1310 [2022-02-15 12:16:17,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1613 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1039, Invalid=4967, Unknown=0, NotChecked=0, Total=6006 [2022-02-15 12:16:17,449 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 580 mSDsluCounter, 2755 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:16:17,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 2772 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:16:17,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2022-02-15 12:16:17,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 977. [2022-02-15 12:16:17,474 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) [2022-02-15 12:16:17,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 2577 transitions. [2022-02-15 12:16:17,477 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 2577 transitions. Word has length 70 [2022-02-15 12:16:17,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:16:17,477 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 2577 transitions. [2022-02-15 12:16:17,477 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) [2022-02-15 12:16:17,477 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 2577 transitions. [2022-02-15 12:16:17,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:16:17,479 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:16:17,479 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] [2022-02-15 12:16:17,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-15 12:16:17,695 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 [2022-02-15 12:16:17,696 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:16:17,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:16:17,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1740201325, now seen corresponding path program 7 times [2022-02-15 12:16:17,696 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:16:17,696 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721983974] [2022-02-15 12:16:17,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:16:17,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:16:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:16:17,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:17,877 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:16:17,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721983974] [2022-02-15 12:16:17,877 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721983974] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:16:17,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512355896] [2022-02-15 12:16:17,877 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:16:17,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:16:17,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:16:17,884 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) [2022-02-15 12:16:17,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-15 12:16:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:16:17,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:16:17,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:16:18,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:18,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:16:18,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:18,991 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512355896] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:16:18,991 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:16:18,991 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:16:18,991 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253440907] [2022-02-15 12:16:18,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:16:18,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:16:18,992 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:16:18,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:16:18,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:16:18,993 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) [2022-02-15 12:16:22,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:16:22,122 INFO L93 Difference]: Finished difference Result 2171 states and 5825 transitions. [2022-02-15 12:16:22,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-15 12:16:22,122 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 [2022-02-15 12:16:22,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:16:22,127 INFO L225 Difference]: With dead ends: 2171 [2022-02-15 12:16:22,128 INFO L226 Difference]: Without dead ends: 2031 [2022-02-15 12:16:22,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3871 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1718, Invalid=9838, Unknown=0, NotChecked=0, Total=11556 [2022-02-15 12:16:22,132 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 729 mSDsluCounter, 2810 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 2833 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:16:22,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 2833 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:16:22,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2022-02-15 12:16:22,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 1013. [2022-02-15 12:16:22,156 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) [2022-02-15 12:16:22,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 2696 transitions. [2022-02-15 12:16:22,159 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 2696 transitions. Word has length 70 [2022-02-15 12:16:22,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:16:22,160 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 2696 transitions. [2022-02-15 12:16:22,160 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) [2022-02-15 12:16:22,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 2696 transitions. [2022-02-15 12:16:22,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:16:22,162 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:16:22,162 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] [2022-02-15 12:16:22,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-02-15 12:16:22,383 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 [2022-02-15 12:16:22,383 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:16:22,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:16:22,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1996119831, now seen corresponding path program 8 times [2022-02-15 12:16:22,384 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:16:22,384 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921262963] [2022-02-15 12:16:22,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:16:22,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:16:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:16:22,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:22,531 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:16:22,531 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921262963] [2022-02-15 12:16:22,531 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921262963] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:16:22,531 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160674284] [2022-02-15 12:16:22,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:16:22,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:16:22,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:16:22,532 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) [2022-02-15 12:16:22,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-15 12:16:22,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:16:22,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:16:22,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:16:22,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:16:22,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:22,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:16:23,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:23,589 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160674284] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:16:23,589 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:16:23,589 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:16:23,589 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714684526] [2022-02-15 12:16:23,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:16:23,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:16:23,589 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:16:23,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:16:23,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:16:23,590 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) [2022-02-15 12:16:26,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:16:26,575 INFO L93 Difference]: Finished difference Result 2201 states and 5933 transitions. [2022-02-15 12:16:26,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-15 12:16:26,575 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 [2022-02-15 12:16:26,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:16:26,579 INFO L225 Difference]: With dead ends: 2201 [2022-02-15 12:16:26,579 INFO L226 Difference]: Without dead ends: 2075 [2022-02-15 12:16:26,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3645 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1631, Invalid=9499, Unknown=0, NotChecked=0, Total=11130 [2022-02-15 12:16:26,581 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 786 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:16:26,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [786 Valid, 2456 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:16:26,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2022-02-15 12:16:26,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 1065. [2022-02-15 12:16:26,606 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) [2022-02-15 12:16:26,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 2863 transitions. [2022-02-15 12:16:26,609 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 2863 transitions. Word has length 70 [2022-02-15 12:16:26,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:16:26,609 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 2863 transitions. [2022-02-15 12:16:26,609 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) [2022-02-15 12:16:26,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 2863 transitions. [2022-02-15 12:16:26,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:16:26,612 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:16:26,612 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] [2022-02-15 12:16:26,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-15 12:16:26,827 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 [2022-02-15 12:16:26,828 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:16:26,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:16:26,828 INFO L85 PathProgramCache]: Analyzing trace with hash 713876771, now seen corresponding path program 9 times [2022-02-15 12:16:26,828 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:16:26,828 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093818108] [2022-02-15 12:16:26,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:16:26,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:16:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:16:26,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:26,989 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:16:26,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093818108] [2022-02-15 12:16:26,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093818108] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:16:26,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848923401] [2022-02-15 12:16:26,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:16:26,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:16:26,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:16:26,991 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) [2022-02-15 12:16:26,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-15 12:16:27,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-15 12:16:27,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:16:27,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:16:27,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:16:27,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:27,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:16:28,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:28,027 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848923401] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:16:28,027 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:16:28,027 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:16:28,027 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93281017] [2022-02-15 12:16:28,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:16:28,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:16:28,028 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:16:28,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:16:28,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:16:28,028 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) [2022-02-15 12:16:31,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:16:31,096 INFO L93 Difference]: Finished difference Result 2153 states and 5838 transitions. [2022-02-15 12:16:31,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-15 12:16:31,096 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 [2022-02-15 12:16:31,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:16:31,099 INFO L225 Difference]: With dead ends: 2153 [2022-02-15 12:16:31,100 INFO L226 Difference]: Without dead ends: 2013 [2022-02-15 12:16:31,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3745 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1653, Invalid=9689, Unknown=0, NotChecked=0, Total=11342 [2022-02-15 12:16:31,101 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 667 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:16:31,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 2598 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:16:31,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2022-02-15 12:16:31,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1065. [2022-02-15 12:16:31,127 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) [2022-02-15 12:16:31,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 2859 transitions. [2022-02-15 12:16:31,130 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 2859 transitions. Word has length 70 [2022-02-15 12:16:31,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:16:31,130 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 2859 transitions. [2022-02-15 12:16:31,130 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) [2022-02-15 12:16:31,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 2859 transitions. [2022-02-15 12:16:31,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:16:31,133 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:16:31,133 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] [2022-02-15 12:16:31,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-15 12:16:31,351 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 [2022-02-15 12:16:31,352 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:16:31,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:16:31,352 INFO L85 PathProgramCache]: Analyzing trace with hash -572732175, now seen corresponding path program 10 times [2022-02-15 12:16:31,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:16:31,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833453238] [2022-02-15 12:16:31,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:16:31,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:16:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:16:31,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:31,534 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:16:31,534 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833453238] [2022-02-15 12:16:31,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833453238] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:16:31,534 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094599307] [2022-02-15 12:16:31,534 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:16:31,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:16:31,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:16:31,535 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) [2022-02-15 12:16:31,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-15 12:16:31,601 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:16:31,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:16:31,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-15 12:16:31,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:16:31,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:31,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:16:32,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:32,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094599307] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:16:32,450 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:16:32,450 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2022-02-15 12:16:32,450 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231525822] [2022-02-15 12:16:32,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:16:32,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 12:16:32,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:16:32,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 12:16:32,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=882, Unknown=0, NotChecked=0, Total=992 [2022-02-15 12:16:32,451 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) [2022-02-15 12:16:35,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:16:35,106 INFO L93 Difference]: Finished difference Result 2793 states and 7571 transitions. [2022-02-15 12:16:35,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-15 12:16:35,106 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 [2022-02-15 12:16:35,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:16:35,112 INFO L225 Difference]: With dead ends: 2793 [2022-02-15 12:16:35,112 INFO L226 Difference]: Without dead ends: 2661 [2022-02-15 12:16:35,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4054 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1760, Invalid=10672, Unknown=0, NotChecked=0, Total=12432 [2022-02-15 12:16:35,114 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 946 mSDsluCounter, 3524 mSDsCounter, 0 mSdLazyCounter, 1742 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 3536 SdHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:16:35,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 3536 Invalid, 1876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1742 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:16:35,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2661 states. [2022-02-15 12:16:35,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2661 to 1416. [2022-02-15 12:16:35,146 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) [2022-02-15 12:16:35,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 3982 transitions. [2022-02-15 12:16:35,150 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 3982 transitions. Word has length 70 [2022-02-15 12:16:35,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:16:35,150 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 3982 transitions. [2022-02-15 12:16:35,150 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) [2022-02-15 12:16:35,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 3982 transitions. [2022-02-15 12:16:35,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:16:35,154 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:16:35,154 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] [2022-02-15 12:16:35,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-15 12:16:35,375 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 [2022-02-15 12:16:35,376 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:16:35,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:16:35,376 INFO L85 PathProgramCache]: Analyzing trace with hash -340166747, now seen corresponding path program 11 times [2022-02-15 12:16:35,376 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:16:35,376 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445139798] [2022-02-15 12:16:35,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:16:35,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:16:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:16:35,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:35,550 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:16:35,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445139798] [2022-02-15 12:16:35,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445139798] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:16:35,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579789773] [2022-02-15 12:16:35,550 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:16:35,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:16:35,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:16:35,552 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) [2022-02-15 12:16:35,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-15 12:16:35,621 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:16:35,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:16:35,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:16:35,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:16:36,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:36,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:16:36,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:36,688 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579789773] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:16:36,688 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:16:36,688 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:16:36,688 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096687578] [2022-02-15 12:16:36,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:16:36,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:16:36,689 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:16:36,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:16:36,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:16:36,690 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) [2022-02-15 12:16:39,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:16:39,115 INFO L93 Difference]: Finished difference Result 2895 states and 8029 transitions. [2022-02-15 12:16:39,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-15 12:16:39,115 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 [2022-02-15 12:16:39,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:16:39,120 INFO L225 Difference]: With dead ends: 2895 [2022-02-15 12:16:39,120 INFO L226 Difference]: Without dead ends: 2769 [2022-02-15 12:16:39,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2406 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1033, Invalid=7157, Unknown=0, NotChecked=0, Total=8190 [2022-02-15 12:16:39,121 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 593 mSDsluCounter, 2728 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 2755 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:16:39,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [593 Valid, 2755 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:16:39,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2022-02-15 12:16:39,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 1444. [2022-02-15 12:16:39,157 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) [2022-02-15 12:16:39,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 4067 transitions. [2022-02-15 12:16:39,161 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 4067 transitions. Word has length 70 [2022-02-15 12:16:39,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:16:39,161 INFO L470 AbstractCegarLoop]: Abstraction has 1444 states and 4067 transitions. [2022-02-15 12:16:39,161 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) [2022-02-15 12:16:39,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 4067 transitions. [2022-02-15 12:16:39,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:16:39,165 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:16:39,165 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] [2022-02-15 12:16:39,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-15 12:16:39,391 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 [2022-02-15 12:16:39,391 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:16:39,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:16:39,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1925137441, now seen corresponding path program 12 times [2022-02-15 12:16:39,392 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:16:39,392 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943976293] [2022-02-15 12:16:39,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:16:39,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:16:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:16:39,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:39,560 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:16:39,560 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943976293] [2022-02-15 12:16:39,560 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943976293] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:16:39,560 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617219522] [2022-02-15 12:16:39,560 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:16:39,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:16:39,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:16:39,564 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) [2022-02-15 12:16:39,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-15 12:16:39,636 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-15 12:16:39,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:16:39,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:16:39,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:16:39,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:39,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:16:40,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:40,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617219522] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:16:40,640 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:16:40,640 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:16:40,640 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003458228] [2022-02-15 12:16:40,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:16:40,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:16:40,641 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:16:40,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:16:40,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:16:40,641 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) [2022-02-15 12:16:43,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:16:43,055 INFO L93 Difference]: Finished difference Result 2847 states and 7934 transitions. [2022-02-15 12:16:43,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-15 12:16:43,055 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 [2022-02-15 12:16:43,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:16:43,060 INFO L225 Difference]: With dead ends: 2847 [2022-02-15 12:16:43,060 INFO L226 Difference]: Without dead ends: 2707 [2022-02-15 12:16:43,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2499 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1060, Invalid=7312, Unknown=0, NotChecked=0, Total=8372 [2022-02-15 12:16:43,062 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 487 mSDsluCounter, 2520 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:16:43,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 2533 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:16:43,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2707 states. [2022-02-15 12:16:43,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2707 to 1436. [2022-02-15 12:16:43,097 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) [2022-02-15 12:16:43,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 4041 transitions. [2022-02-15 12:16:43,102 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 4041 transitions. Word has length 70 [2022-02-15 12:16:43,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:16:43,102 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 4041 transitions. [2022-02-15 12:16:43,102 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) [2022-02-15 12:16:43,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 4041 transitions. [2022-02-15 12:16:43,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:16:43,106 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:16:43,106 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] [2022-02-15 12:16:43,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-15 12:16:43,321 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 [2022-02-15 12:16:43,321 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:16:43,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:16:43,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1083220909, now seen corresponding path program 13 times [2022-02-15 12:16:43,321 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:16:43,321 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106696277] [2022-02-15 12:16:43,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:16:43,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:16:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:16:43,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:43,484 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:16:43,484 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106696277] [2022-02-15 12:16:43,484 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106696277] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:16:43,484 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501396301] [2022-02-15 12:16:43,484 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:16:43,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:16:43,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:16:43,486 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) [2022-02-15 12:16:43,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-15 12:16:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:16:43,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:16:43,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:16:43,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:43,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:16:44,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:44,564 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501396301] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:16:44,564 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:16:44,564 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:16:44,565 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356550578] [2022-02-15 12:16:44,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:16:44,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:16:44,565 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:16:44,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:16:44,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=994, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:16:44,566 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) [2022-02-15 12:16:48,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:16:48,394 INFO L93 Difference]: Finished difference Result 3158 states and 8754 transitions. [2022-02-15 12:16:48,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-15 12:16:48,394 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 [2022-02-15 12:16:48,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:16:48,399 INFO L225 Difference]: With dead ends: 3158 [2022-02-15 12:16:48,400 INFO L226 Difference]: Without dead ends: 3026 [2022-02-15 12:16:48,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4898 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1851, Invalid=12669, Unknown=0, NotChecked=0, Total=14520 [2022-02-15 12:16:48,402 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 701 mSDsluCounter, 3372 mSDsCounter, 0 mSdLazyCounter, 1534 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 3354 SdHoareTripleChecker+Invalid, 1645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:16:48,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [701 Valid, 3354 Invalid, 1645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1534 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:16:48,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2022-02-15 12:16:48,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 1504. [2022-02-15 12:16:48,441 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) [2022-02-15 12:16:48,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 4240 transitions. [2022-02-15 12:16:48,446 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 4240 transitions. Word has length 70 [2022-02-15 12:16:48,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:16:48,447 INFO L470 AbstractCegarLoop]: Abstraction has 1504 states and 4240 transitions. [2022-02-15 12:16:48,447 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) [2022-02-15 12:16:48,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 4240 transitions. [2022-02-15 12:16:48,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:16:48,450 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:16:48,450 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] [2022-02-15 12:16:48,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-15 12:16:48,675 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 [2022-02-15 12:16:48,676 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:16:48,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:16:48,676 INFO L85 PathProgramCache]: Analyzing trace with hash -295820047, now seen corresponding path program 14 times [2022-02-15 12:16:48,676 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:16:48,676 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819858191] [2022-02-15 12:16:48,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:16:48,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:16:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:16:48,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:48,840 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:16:48,840 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819858191] [2022-02-15 12:16:48,840 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819858191] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:16:48,840 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501999149] [2022-02-15 12:16:48,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:16:48,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:16:48,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:16:48,841 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) [2022-02-15 12:16:48,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-15 12:16:48,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:16:48,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:16:48,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:16:48,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:16:49,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:49,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:16:49,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:49,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501999149] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:16:49,841 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:16:49,842 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:16:49,842 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636647917] [2022-02-15 12:16:49,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:16:49,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:16:49,842 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:16:49,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:16:49,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:16:49,843 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) [2022-02-15 12:16:52,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:16:52,342 INFO L93 Difference]: Finished difference Result 2838 states and 7871 transitions. [2022-02-15 12:16:52,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-15 12:16:52,343 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 [2022-02-15 12:16:52,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:16:52,347 INFO L225 Difference]: With dead ends: 2838 [2022-02-15 12:16:52,348 INFO L226 Difference]: Without dead ends: 2706 [2022-02-15 12:16:52,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2679 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1071, Invalid=7859, Unknown=0, NotChecked=0, Total=8930 [2022-02-15 12:16:52,349 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 539 mSDsluCounter, 2935 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 2935 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:16:52,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 2935 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:16:52,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2022-02-15 12:16:52,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 1519. [2022-02-15 12:16:52,376 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) [2022-02-15 12:16:52,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 4275 transitions. [2022-02-15 12:16:52,380 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 4275 transitions. Word has length 70 [2022-02-15 12:16:52,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:16:52,380 INFO L470 AbstractCegarLoop]: Abstraction has 1519 states and 4275 transitions. [2022-02-15 12:16:52,380 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) [2022-02-15 12:16:52,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 4275 transitions. [2022-02-15 12:16:52,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:16:52,384 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:16:52,384 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] [2022-02-15 12:16:52,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-15 12:16:52,611 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 [2022-02-15 12:16:52,612 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:16:52,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:16:52,612 INFO L85 PathProgramCache]: Analyzing trace with hash 146329989, now seen corresponding path program 15 times [2022-02-15 12:16:52,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:16:52,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356518727] [2022-02-15 12:16:52,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:16:52,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:16:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:16:52,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:52,773 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:16:52,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356518727] [2022-02-15 12:16:52,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356518727] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:16:52,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806321478] [2022-02-15 12:16:52,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:16:52,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:16:52,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:16:52,775 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) [2022-02-15 12:16:52,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-15 12:16:52,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-15 12:16:52,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:16:52,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:16:52,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:16:53,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:53,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:16:53,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:53,777 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806321478] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:16:53,777 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:16:53,778 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:16:53,778 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492844265] [2022-02-15 12:16:53,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:16:53,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:16:53,778 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:16:53,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:16:53,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=984, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:16:53,779 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) [2022-02-15 12:16:57,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:16:57,727 INFO L93 Difference]: Finished difference Result 3305 states and 9252 transitions. [2022-02-15 12:16:57,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-02-15 12:16:57,728 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 [2022-02-15 12:16:57,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:16:57,733 INFO L225 Difference]: With dead ends: 3305 [2022-02-15 12:16:57,733 INFO L226 Difference]: Without dead ends: 3179 [2022-02-15 12:16:57,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5564 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2275, Invalid=13475, Unknown=0, NotChecked=0, Total=15750 [2022-02-15 12:16:57,735 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 744 mSDsluCounter, 3189 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 3200 SdHoareTripleChecker+Invalid, 1727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:16:57,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 3200 Invalid, 1727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1607 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:16:57,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2022-02-15 12:16:57,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 1615. [2022-02-15 12:16:57,773 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) [2022-02-15 12:16:57,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 4595 transitions. [2022-02-15 12:16:57,777 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 4595 transitions. Word has length 70 [2022-02-15 12:16:57,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:16:57,778 INFO L470 AbstractCegarLoop]: Abstraction has 1615 states and 4595 transitions. [2022-02-15 12:16:57,778 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) [2022-02-15 12:16:57,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 4595 transitions. [2022-02-15 12:16:57,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:16:57,782 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:16:57,782 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] [2022-02-15 12:16:57,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-15 12:16:57,992 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 [2022-02-15 12:16:57,993 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:16:57,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:16:57,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1438640705, now seen corresponding path program 16 times [2022-02-15 12:16:57,993 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:16:57,993 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925439920] [2022-02-15 12:16:57,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:16:57,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:16:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:16:58,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:58,163 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:16:58,163 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925439920] [2022-02-15 12:16:58,163 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925439920] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:16:58,163 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779841007] [2022-02-15 12:16:58,163 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:16:58,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:16:58,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:16:58,168 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) [2022-02-15 12:16:58,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-15 12:16:58,241 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:16:58,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:16:58,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-15 12:16:58,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:16:58,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:58,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:16:59,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:16:59,031 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779841007] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:16:59,031 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:16:59,031 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:16:59,032 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871512060] [2022-02-15 12:16:59,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:16:59,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:16:59,032 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:16:59,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:16:59,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:16:59,033 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) [2022-02-15 12:17:01,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:17:01,424 INFO L93 Difference]: Finished difference Result 3390 states and 9672 transitions. [2022-02-15 12:17:01,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-02-15 12:17:01,425 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 [2022-02-15 12:17:01,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:17:01,431 INFO L225 Difference]: With dead ends: 3390 [2022-02-15 12:17:01,431 INFO L226 Difference]: Without dead ends: 3213 [2022-02-15 12:17:01,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4151 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1687, Invalid=10745, Unknown=0, NotChecked=0, Total=12432 [2022-02-15 12:17:01,434 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 587 mSDsluCounter, 3210 mSDsCounter, 0 mSdLazyCounter, 1845 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 3236 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:17:01,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 3236 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1845 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:17:01,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3213 states. [2022-02-15 12:17:01,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3213 to 1683. [2022-02-15 12:17:01,489 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) [2022-02-15 12:17:01,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 4810 transitions. [2022-02-15 12:17:01,495 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 4810 transitions. Word has length 70 [2022-02-15 12:17:01,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:17:01,495 INFO L470 AbstractCegarLoop]: Abstraction has 1683 states and 4810 transitions. [2022-02-15 12:17:01,496 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) [2022-02-15 12:17:01,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 4810 transitions. [2022-02-15 12:17:01,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:17:01,500 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:17:01,500 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] [2022-02-15 12:17:01,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-15 12:17:01,714 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 [2022-02-15 12:17:01,714 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:17:01,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:17:01,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1845975855, now seen corresponding path program 17 times [2022-02-15 12:17:01,715 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:17:01,715 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172450295] [2022-02-15 12:17:01,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:17:01,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:17:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:17:01,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:01,871 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:17:01,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172450295] [2022-02-15 12:17:01,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172450295] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:17:01,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375746791] [2022-02-15 12:17:01,872 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:17:01,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:17:01,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:17:01,873 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) [2022-02-15 12:17:01,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-15 12:17:01,936 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 12:17:01,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:17:01,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:17:01,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:17:02,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:02,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:17:02,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:02,707 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375746791] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:17:02,707 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:17:02,707 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:17:02,707 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083129555] [2022-02-15 12:17:02,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:17:02,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:17:02,708 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:17:02,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:17:02,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=934, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:17:02,708 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) [2022-02-15 12:17:04,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:17:04,358 INFO L93 Difference]: Finished difference Result 2439 states and 6867 transitions. [2022-02-15 12:17:04,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-15 12:17:04,359 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 [2022-02-15 12:17:04,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:17:04,363 INFO L225 Difference]: With dead ends: 2439 [2022-02-15 12:17:04,363 INFO L226 Difference]: Without dead ends: 2376 [2022-02-15 12:17:04,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2331 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1318, Invalid=6872, Unknown=0, NotChecked=0, Total=8190 [2022-02-15 12:17:04,365 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 647 mSDsluCounter, 3098 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 3098 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:17:04,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 3098 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1445 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:17:04,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2022-02-15 12:17:04,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 1763. [2022-02-15 12:17:04,391 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) [2022-02-15 12:17:04,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 5078 transitions. [2022-02-15 12:17:04,397 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 5078 transitions. Word has length 70 [2022-02-15 12:17:04,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:17:04,397 INFO L470 AbstractCegarLoop]: Abstraction has 1763 states and 5078 transitions. [2022-02-15 12:17:04,397 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) [2022-02-15 12:17:04,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 5078 transitions. [2022-02-15 12:17:04,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:17:04,401 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:17:04,401 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] [2022-02-15 12:17:04,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-15 12:17:04,627 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 [2022-02-15 12:17:04,628 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:17:04,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:17:04,628 INFO L85 PathProgramCache]: Analyzing trace with hash 133886259, now seen corresponding path program 18 times [2022-02-15 12:17:04,628 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:17:04,628 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729898966] [2022-02-15 12:17:04,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:17:04,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:17:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:17:04,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:04,795 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:17:04,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729898966] [2022-02-15 12:17:04,795 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729898966] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:17:04,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825821642] [2022-02-15 12:17:04,795 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:17:04,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:17:04,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:17:04,797 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) [2022-02-15 12:17:04,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-15 12:17:04,872 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-15 12:17:04,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:17:04,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:17:04,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:17:05,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:05,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:17:05,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:05,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825821642] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:17:05,670 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:17:05,670 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:17:05,670 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815985054] [2022-02-15 12:17:05,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:17:05,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:17:05,671 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:17:05,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:17:05,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:17:05,672 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) [2022-02-15 12:17:07,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:17:07,144 INFO L93 Difference]: Finished difference Result 2219 states and 6317 transitions. [2022-02-15 12:17:07,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-15 12:17:07,144 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 [2022-02-15 12:17:07,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:17:07,148 INFO L225 Difference]: With dead ends: 2219 [2022-02-15 12:17:07,149 INFO L226 Difference]: Without dead ends: 2152 [2022-02-15 12:17:07,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2127 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1233, Invalid=6423, Unknown=0, NotChecked=0, Total=7656 [2022-02-15 12:17:07,150 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 621 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:17:07,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 2375 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:17:07,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2022-02-15 12:17:07,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 1683. [2022-02-15 12:17:07,172 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) [2022-02-15 12:17:07,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 4814 transitions. [2022-02-15 12:17:07,175 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 4814 transitions. Word has length 70 [2022-02-15 12:17:07,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:17:07,175 INFO L470 AbstractCegarLoop]: Abstraction has 1683 states and 4814 transitions. [2022-02-15 12:17:07,175 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) [2022-02-15 12:17:07,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 4814 transitions. [2022-02-15 12:17:07,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:17:07,180 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:17:07,180 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] [2022-02-15 12:17:07,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-02-15 12:17:07,395 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 [2022-02-15 12:17:07,395 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:17:07,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:17:07,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1885871487, now seen corresponding path program 19 times [2022-02-15 12:17:07,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:17:07,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577850949] [2022-02-15 12:17:07,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:17:07,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:17:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:17:07,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:07,567 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:17:07,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577850949] [2022-02-15 12:17:07,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577850949] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:17:07,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044667354] [2022-02-15 12:17:07,567 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:17:07,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:17:07,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:17:07,569 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) [2022-02-15 12:17:07,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-15 12:17:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:17:07,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:17:07,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:17:08,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:08,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:17:08,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:08,785 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044667354] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:17:08,785 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:17:08,786 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:17:08,786 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599461443] [2022-02-15 12:17:08,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:17:08,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:17:08,786 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:17:08,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:17:08,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:17:08,788 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) [2022-02-15 12:17:12,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:17:12,401 INFO L93 Difference]: Finished difference Result 3486 states and 9856 transitions. [2022-02-15 12:17:12,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-15 12:17:12,401 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 [2022-02-15 12:17:12,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:17:12,407 INFO L225 Difference]: With dead ends: 3486 [2022-02-15 12:17:12,407 INFO L226 Difference]: Without dead ends: 3360 [2022-02-15 12:17:12,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4418 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1812, Invalid=11298, Unknown=0, NotChecked=0, Total=13110 [2022-02-15 12:17:12,408 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 704 mSDsluCounter, 2615 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 2642 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:17:12,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 2642 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:17:12,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3360 states. [2022-02-15 12:17:12,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3360 to 1795. [2022-02-15 12:17:12,435 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) [2022-02-15 12:17:12,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 5170 transitions. [2022-02-15 12:17:12,438 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 5170 transitions. Word has length 70 [2022-02-15 12:17:12,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:17:12,438 INFO L470 AbstractCegarLoop]: Abstraction has 1795 states and 5170 transitions. [2022-02-15 12:17:12,438 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) [2022-02-15 12:17:12,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 5170 transitions. [2022-02-15 12:17:12,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:17:12,441 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:17:12,441 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] [2022-02-15 12:17:12,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-02-15 12:17:12,642 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 [2022-02-15 12:17:12,642 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:17:12,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:17:12,642 INFO L85 PathProgramCache]: Analyzing trace with hash 300900793, now seen corresponding path program 20 times [2022-02-15 12:17:12,642 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:17:12,643 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878462861] [2022-02-15 12:17:12,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:17:12,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:17:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:17:12,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:12,815 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:17:12,815 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878462861] [2022-02-15 12:17:12,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878462861] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:17:12,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876792250] [2022-02-15 12:17:12,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:17:12,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:17:12,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:17:12,817 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) [2022-02-15 12:17:12,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-15 12:17:12,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:17:12,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:17:12,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:17:12,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:17:13,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:13,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:17:13,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:13,845 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876792250] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:17:13,845 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:17:13,845 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:17:13,845 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165471127] [2022-02-15 12:17:13,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:17:13,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:17:13,846 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:17:13,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:17:13,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:17:13,846 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) [2022-02-15 12:17:17,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:17:17,334 INFO L93 Difference]: Finished difference Result 3422 states and 9717 transitions. [2022-02-15 12:17:17,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-15 12:17:17,334 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 [2022-02-15 12:17:17,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:17:17,341 INFO L225 Difference]: With dead ends: 3422 [2022-02-15 12:17:17,341 INFO L226 Difference]: Without dead ends: 3282 [2022-02-15 12:17:17,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4527 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1850, Invalid=11490, Unknown=0, NotChecked=0, Total=13340 [2022-02-15 12:17:17,343 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 683 mSDsluCounter, 2520 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:17:17,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [683 Valid, 2542 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:17:17,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3282 states. [2022-02-15 12:17:17,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3282 to 1787. [2022-02-15 12:17:17,384 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) [2022-02-15 12:17:17,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1787 states to 1787 states and 5136 transitions. [2022-02-15 12:17:17,389 INFO L78 Accepts]: Start accepts. Automaton has 1787 states and 5136 transitions. Word has length 70 [2022-02-15 12:17:17,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:17:17,390 INFO L470 AbstractCegarLoop]: Abstraction has 1787 states and 5136 transitions. [2022-02-15 12:17:17,390 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) [2022-02-15 12:17:17,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1787 states and 5136 transitions. [2022-02-15 12:17:17,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:17:17,394 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:17:17,394 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] [2022-02-15 12:17:17,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-15 12:17:17,607 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 [2022-02-15 12:17:17,608 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:17:17,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:17:17,608 INFO L85 PathProgramCache]: Analyzing trace with hash -985708153, now seen corresponding path program 21 times [2022-02-15 12:17:17,608 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:17:17,608 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006749806] [2022-02-15 12:17:17,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:17:17,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:17:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:17:17,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:17,763 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:17:17,763 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006749806] [2022-02-15 12:17:17,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006749806] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:17:17,763 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755627112] [2022-02-15 12:17:17,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:17:17,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:17:17,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:17:17,765 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) [2022-02-15 12:17:17,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-15 12:17:17,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-15 12:17:17,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:17:17,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:17:17,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:17:18,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:18,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:17:18,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:18,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755627112] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:17:18,838 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:17:18,838 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:17:18,838 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319158006] [2022-02-15 12:17:18,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:17:18,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:17:18,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:17:18,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:17:18,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:17:18,839 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) [2022-02-15 12:17:23,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:17:23,443 INFO L93 Difference]: Finished difference Result 3648 states and 10326 transitions. [2022-02-15 12:17:23,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-02-15 12:17:23,444 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 [2022-02-15 12:17:23,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:17:23,450 INFO L225 Difference]: With dead ends: 3648 [2022-02-15 12:17:23,450 INFO L226 Difference]: Without dead ends: 3516 [2022-02-15 12:17:23,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6642 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2527, Invalid=15833, Unknown=0, NotChecked=0, Total=18360 [2022-02-15 12:17:23,452 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 793 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:17:23,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 2696 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:17:23,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3516 states. [2022-02-15 12:17:23,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3516 to 1755. [2022-02-15 12:17:23,485 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) [2022-02-15 12:17:23,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 5048 transitions. [2022-02-15 12:17:23,489 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 5048 transitions. Word has length 70 [2022-02-15 12:17:23,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:17:23,490 INFO L470 AbstractCegarLoop]: Abstraction has 1755 states and 5048 transitions. [2022-02-15 12:17:23,490 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) [2022-02-15 12:17:23,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 5048 transitions. [2022-02-15 12:17:23,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:17:23,493 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:17:23,494 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] [2022-02-15 12:17:23,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-15 12:17:23,694 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 [2022-02-15 12:17:23,694 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:17:23,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:17:23,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1930218187, now seen corresponding path program 22 times [2022-02-15 12:17:23,695 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:17:23,695 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923828362] [2022-02-15 12:17:23,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:17:23,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:17:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:17:23,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:23,855 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:17:23,855 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923828362] [2022-02-15 12:17:23,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923828362] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:17:23,855 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760162651] [2022-02-15 12:17:23,855 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:17:23,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:17:23,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:17:23,857 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) [2022-02-15 12:17:23,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-15 12:17:23,933 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:17:23,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:17:23,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-15 12:17:23,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:17:24,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:24,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:17:24,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:24,736 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760162651] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:17:24,736 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:17:24,736 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:17:24,736 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622585776] [2022-02-15 12:17:24,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:17:24,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:17:24,736 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:17:24,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:17:24,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:17:24,737 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) [2022-02-15 12:17:26,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:17:26,606 INFO L93 Difference]: Finished difference Result 2948 states and 8269 transitions. [2022-02-15 12:17:26,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-15 12:17:26,607 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 [2022-02-15 12:17:26,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:17:26,612 INFO L225 Difference]: With dead ends: 2948 [2022-02-15 12:17:26,613 INFO L226 Difference]: Without dead ends: 2837 [2022-02-15 12:17:26,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2690 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1221, Invalid=7335, Unknown=0, NotChecked=0, Total=8556 [2022-02-15 12:17:26,614 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 471 mSDsluCounter, 3704 mSDsCounter, 0 mSdLazyCounter, 1717 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 3670 SdHoareTripleChecker+Invalid, 1778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:17:26,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 3670 Invalid, 1778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1717 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:17:26,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2837 states. [2022-02-15 12:17:26,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2837 to 1811. [2022-02-15 12:17:26,642 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) [2022-02-15 12:17:26,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 5226 transitions. [2022-02-15 12:17:26,646 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 5226 transitions. Word has length 70 [2022-02-15 12:17:26,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:17:26,646 INFO L470 AbstractCegarLoop]: Abstraction has 1811 states and 5226 transitions. [2022-02-15 12:17:26,646 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) [2022-02-15 12:17:26,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 5226 transitions. [2022-02-15 12:17:26,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:17:26,649 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:17:26,649 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] [2022-02-15 12:17:26,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-15 12:17:26,852 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 [2022-02-15 12:17:26,853 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:17:26,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:17:26,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1922599073, now seen corresponding path program 23 times [2022-02-15 12:17:26,853 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:17:26,853 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025501610] [2022-02-15 12:17:26,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:17:26,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:17:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:17:27,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:27,014 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:17:27,014 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025501610] [2022-02-15 12:17:27,014 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025501610] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:17:27,014 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071218674] [2022-02-15 12:17:27,014 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:17:27,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:17:27,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:17:27,016 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) [2022-02-15 12:17:27,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-15 12:17:27,080 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:17:27,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:17:27,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:17:27,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:17:27,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:27,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:17:27,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:27,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071218674] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:17:27,821 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:17:27,821 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:17:27,822 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205010270] [2022-02-15 12:17:27,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:17:27,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:17:27,822 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:17:27,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:17:27,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:17:27,823 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) [2022-02-15 12:17:29,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:17:29,146 INFO L93 Difference]: Finished difference Result 2448 states and 6998 transitions. [2022-02-15 12:17:29,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-15 12:17:29,147 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 [2022-02-15 12:17:29,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:17:29,151 INFO L225 Difference]: With dead ends: 2448 [2022-02-15 12:17:29,151 INFO L226 Difference]: Without dead ends: 2385 [2022-02-15 12:17:29,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1639 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=968, Invalid=5038, Unknown=0, NotChecked=0, Total=6006 [2022-02-15 12:17:29,152 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 678 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:17:29,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 2744 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:17:29,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2022-02-15 12:17:29,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 1935. [2022-02-15 12:17:29,189 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) [2022-02-15 12:17:29,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 5595 transitions. [2022-02-15 12:17:29,196 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 5595 transitions. Word has length 70 [2022-02-15 12:17:29,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:17:29,196 INFO L470 AbstractCegarLoop]: Abstraction has 1935 states and 5595 transitions. [2022-02-15 12:17:29,196 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) [2022-02-15 12:17:29,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 5595 transitions. [2022-02-15 12:17:29,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:17:29,201 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:17:29,201 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] [2022-02-15 12:17:29,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-15 12:17:29,415 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 [2022-02-15 12:17:29,415 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:17:29,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:17:29,416 INFO L85 PathProgramCache]: Analyzing trace with hash 787397529, now seen corresponding path program 24 times [2022-02-15 12:17:29,416 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:17:29,416 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926122942] [2022-02-15 12:17:29,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:17:29,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:17:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:17:29,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:29,576 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:17:29,576 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926122942] [2022-02-15 12:17:29,576 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926122942] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:17:29,577 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683418346] [2022-02-15 12:17:29,577 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:17:29,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:17:29,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:17:29,580 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) [2022-02-15 12:17:29,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-15 12:17:29,656 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-15 12:17:29,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:17:29,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:17:29,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:17:30,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:30,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:17:30,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:30,625 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683418346] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:17:30,625 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:17:30,625 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:17:30,625 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520488907] [2022-02-15 12:17:30,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:17:30,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:17:30,626 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:17:30,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:17:30,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=977, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:17:30,627 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) [2022-02-15 12:17:34,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:17:34,875 INFO L93 Difference]: Finished difference Result 4151 states and 11923 transitions. [2022-02-15 12:17:34,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-02-15 12:17:34,875 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 [2022-02-15 12:17:34,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:17:34,883 INFO L225 Difference]: With dead ends: 4151 [2022-02-15 12:17:34,883 INFO L226 Difference]: Without dead ends: 4011 [2022-02-15 12:17:34,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6756 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2828, Invalid=15262, Unknown=0, NotChecked=0, Total=18090 [2022-02-15 12:17:34,885 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 919 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 2419 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:17:34,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [919 Valid, 2419 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:17:34,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4011 states. [2022-02-15 12:17:34,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4011 to 2051. [2022-02-15 12:17:34,927 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) [2022-02-15 12:17:34,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 6022 transitions. [2022-02-15 12:17:34,932 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 6022 transitions. Word has length 70 [2022-02-15 12:17:34,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:17:34,932 INFO L470 AbstractCegarLoop]: Abstraction has 2051 states and 6022 transitions. [2022-02-15 12:17:34,932 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) [2022-02-15 12:17:34,932 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 6022 transitions. [2022-02-15 12:17:34,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:17:34,936 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:17:34,936 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] [2022-02-15 12:17:34,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-15 12:17:35,136 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 [2022-02-15 12:17:35,137 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:17:35,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:17:35,137 INFO L85 PathProgramCache]: Analyzing trace with hash -499211417, now seen corresponding path program 25 times [2022-02-15 12:17:35,137 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:17:35,137 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481990024] [2022-02-15 12:17:35,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:17:35,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:17:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:17:35,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:35,307 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:17:35,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481990024] [2022-02-15 12:17:35,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481990024] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:17:35,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324631911] [2022-02-15 12:17:35,308 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:17:35,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:17:35,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:17:35,309 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) [2022-02-15 12:17:35,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-15 12:17:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:17:35,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:17:35,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:17:35,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:35,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:17:36,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:36,251 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324631911] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:17:36,251 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:17:36,251 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:17:36,251 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125612442] [2022-02-15 12:17:36,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:17:36,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:17:36,251 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:17:36,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:17:36,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:17:36,252 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) [2022-02-15 12:17:41,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:17:41,886 INFO L93 Difference]: Finished difference Result 4543 states and 12903 transitions. [2022-02-15 12:17:41,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-02-15 12:17:41,887 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 [2022-02-15 12:17:41,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:17:41,894 INFO L225 Difference]: With dead ends: 4543 [2022-02-15 12:17:41,894 INFO L226 Difference]: Without dead ends: 4411 [2022-02-15 12:17:41,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10013 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3803, Invalid=21637, Unknown=0, NotChecked=0, Total=25440 [2022-02-15 12:17:41,896 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 946 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 1661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:17:41,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 2892 Invalid, 1661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:17:41,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4411 states. [2022-02-15 12:17:41,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4411 to 1943. [2022-02-15 12:17:41,932 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) [2022-02-15 12:17:41,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 5661 transitions. [2022-02-15 12:17:41,936 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 5661 transitions. Word has length 70 [2022-02-15 12:17:41,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:17:41,936 INFO L470 AbstractCegarLoop]: Abstraction has 1943 states and 5661 transitions. [2022-02-15 12:17:41,936 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) [2022-02-15 12:17:41,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 5661 transitions. [2022-02-15 12:17:41,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:17:41,939 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:17:41,939 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] [2022-02-15 12:17:41,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-02-15 12:17:42,140 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 [2022-02-15 12:17:42,140 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:17:42,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:17:42,140 INFO L85 PathProgramCache]: Analyzing trace with hash -222953207, now seen corresponding path program 26 times [2022-02-15 12:17:42,140 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:17:42,140 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551833865] [2022-02-15 12:17:42,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:17:42,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:17:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:17:42,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:42,295 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:17:42,295 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551833865] [2022-02-15 12:17:42,295 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551833865] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:17:42,295 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921038040] [2022-02-15 12:17:42,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:17:42,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:17:42,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:17:42,300 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) [2022-02-15 12:17:42,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-15 12:17:42,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:17:42,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:17:42,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:17:42,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:17:42,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:42,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:17:43,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:43,342 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921038040] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:17:43,342 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:17:43,342 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:17:43,342 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847842915] [2022-02-15 12:17:43,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:17:43,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:17:43,343 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:17:43,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:17:43,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:17:43,343 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) [2022-02-15 12:17:48,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:17:48,057 INFO L93 Difference]: Finished difference Result 4168 states and 12047 transitions. [2022-02-15 12:17:48,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-02-15 12:17:48,058 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 [2022-02-15 12:17:48,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:17:48,065 INFO L225 Difference]: With dead ends: 4168 [2022-02-15 12:17:48,065 INFO L226 Difference]: Without dead ends: 4093 [2022-02-15 12:17:48,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7903 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3498, Invalid=17672, Unknown=0, NotChecked=0, Total=21170 [2022-02-15 12:17:48,066 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 1077 mSDsluCounter, 2586 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:17:48,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1077 Valid, 2603 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:17:48,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4093 states. [2022-02-15 12:17:48,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4093 to 2171. [2022-02-15 12:17:48,100 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) [2022-02-15 12:17:48,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2171 states to 2171 states and 6384 transitions. [2022-02-15 12:17:48,103 INFO L78 Accepts]: Start accepts. Automaton has 2171 states and 6384 transitions. Word has length 70 [2022-02-15 12:17:48,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:17:48,103 INFO L470 AbstractCegarLoop]: Abstraction has 2171 states and 6384 transitions. [2022-02-15 12:17:48,103 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) [2022-02-15 12:17:48,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2171 states and 6384 transitions. [2022-02-15 12:17:48,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:17:48,107 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:17:48,107 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] [2022-02-15 12:17:48,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-02-15 12:17:48,307 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 [2022-02-15 12:17:48,307 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:17:48,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:17:48,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1935042803, now seen corresponding path program 27 times [2022-02-15 12:17:48,308 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:17:48,308 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935973086] [2022-02-15 12:17:48,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:17:48,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:17:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:17:48,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:48,466 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:17:48,467 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935973086] [2022-02-15 12:17:48,467 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935973086] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:17:48,467 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564119715] [2022-02-15 12:17:48,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:17:48,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:17:48,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:17:48,469 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) [2022-02-15 12:17:48,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-15 12:17:48,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-15 12:17:48,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:17:48,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:17:48,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:17:48,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:48,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:17:49,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:49,527 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564119715] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:17:49,527 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:17:49,527 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:17:49,527 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539570697] [2022-02-15 12:17:49,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:17:49,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:17:49,528 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:17:49,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:17:49,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:17:49,528 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) [2022-02-15 12:17:53,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:17:53,971 INFO L93 Difference]: Finished difference Result 4061 states and 11706 transitions. [2022-02-15 12:17:53,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-02-15 12:17:53,972 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 [2022-02-15 12:17:53,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:17:53,978 INFO L225 Difference]: With dead ends: 4061 [2022-02-15 12:17:53,978 INFO L226 Difference]: Without dead ends: 3935 [2022-02-15 12:17:53,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7685 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3319, Invalid=17273, Unknown=0, NotChecked=0, Total=20592 [2022-02-15 12:17:53,980 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 1021 mSDsluCounter, 2918 mSDsCounter, 0 mSdLazyCounter, 1497 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 2908 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:17:53,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1021 Valid, 2908 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1497 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:17:53,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2022-02-15 12:17:54,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 2163. [2022-02-15 12:17:54,018 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) [2022-02-15 12:17:54,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 6362 transitions. [2022-02-15 12:17:54,022 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 6362 transitions. Word has length 70 [2022-02-15 12:17:54,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:17:54,022 INFO L470 AbstractCegarLoop]: Abstraction has 2163 states and 6362 transitions. [2022-02-15 12:17:54,022 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) [2022-02-15 12:17:54,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 6362 transitions. [2022-02-15 12:17:54,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:17:54,027 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:17:54,027 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] [2022-02-15 12:17:54,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-02-15 12:17:54,227 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 [2022-02-15 12:17:54,228 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:17:54,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:17:54,228 INFO L85 PathProgramCache]: Analyzing trace with hash 774953799, now seen corresponding path program 28 times [2022-02-15 12:17:54,228 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:17:54,228 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342458577] [2022-02-15 12:17:54,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:17:54,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:17:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:17:54,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:54,380 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:17:54,380 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342458577] [2022-02-15 12:17:54,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342458577] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:17:54,381 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683430525] [2022-02-15 12:17:54,381 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:17:54,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:17:54,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:17:54,384 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) [2022-02-15 12:17:54,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-15 12:17:54,468 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:17:54,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:17:54,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-15 12:17:54,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:17:54,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:54,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:17:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:55,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683430525] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:17:55,215 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:17:55,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:17:55,215 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114414126] [2022-02-15 12:17:55,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:17:55,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:17:55,215 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:17:55,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:17:55,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:17:55,216 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) [2022-02-15 12:17:58,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:17:58,786 INFO L93 Difference]: Finished difference Result 4136 states and 12015 transitions. [2022-02-15 12:17:58,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-02-15 12:17:58,786 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 [2022-02-15 12:17:58,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:17:58,793 INFO L225 Difference]: With dead ends: 4136 [2022-02-15 12:17:58,793 INFO L226 Difference]: Without dead ends: 3990 [2022-02-15 12:17:58,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8287 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2953, Invalid=20609, Unknown=0, NotChecked=0, Total=23562 [2022-02-15 12:17:58,795 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 851 mSDsluCounter, 3283 mSDsCounter, 0 mSdLazyCounter, 1921 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 2050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 12:17:58,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 3318 Invalid, 2050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1921 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 12:17:58,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3990 states. [2022-02-15 12:17:58,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3990 to 2547. [2022-02-15 12:17:58,832 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) [2022-02-15 12:17:58,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2547 states to 2547 states and 7582 transitions. [2022-02-15 12:17:58,837 INFO L78 Accepts]: Start accepts. Automaton has 2547 states and 7582 transitions. Word has length 70 [2022-02-15 12:17:58,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:17:58,837 INFO L470 AbstractCegarLoop]: Abstraction has 2547 states and 7582 transitions. [2022-02-15 12:17:58,837 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) [2022-02-15 12:17:58,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2547 states and 7582 transitions. [2022-02-15 12:17:58,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:17:58,840 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:17:58,840 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] [2022-02-15 12:17:58,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-02-15 12:17:59,041 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 [2022-02-15 12:17:59,042 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:17:59,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:17:59,042 INFO L85 PathProgramCache]: Analyzing trace with hash 8283375, now seen corresponding path program 29 times [2022-02-15 12:17:59,042 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:17:59,042 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76919186] [2022-02-15 12:17:59,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:17:59,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:17:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:17:59,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:59,177 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:17:59,177 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76919186] [2022-02-15 12:17:59,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76919186] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:17:59,177 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938852007] [2022-02-15 12:17:59,177 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:17:59,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:17:59,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:17:59,178 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) [2022-02-15 12:17:59,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-15 12:17:59,244 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:17:59,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:17:59,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:17:59,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:17:59,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:17:59,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:18:00,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:00,147 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938852007] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:18:00,147 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:18:00,147 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:18:00,147 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206970682] [2022-02-15 12:18:00,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:18:00,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:18:00,147 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:18:00,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:18:00,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:18:00,148 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) [2022-02-15 12:18:02,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:18:02,116 INFO L93 Difference]: Finished difference Result 4263 states and 12331 transitions. [2022-02-15 12:18:02,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-15 12:18:02,116 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 [2022-02-15 12:18:02,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:18:02,124 INFO L225 Difference]: With dead ends: 4263 [2022-02-15 12:18:02,124 INFO L226 Difference]: Without dead ends: 4131 [2022-02-15 12:18:02,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2009 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=825, Invalid=5981, Unknown=0, NotChecked=0, Total=6806 [2022-02-15 12:18:02,125 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 503 mSDsluCounter, 2857 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 2851 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:18:02,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 2851 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:18:02,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4131 states. [2022-02-15 12:18:02,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4131 to 2583. [2022-02-15 12:18:02,169 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) [2022-02-15 12:18:02,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 7685 transitions. [2022-02-15 12:18:02,175 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 7685 transitions. Word has length 70 [2022-02-15 12:18:02,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:18:02,175 INFO L470 AbstractCegarLoop]: Abstraction has 2583 states and 7685 transitions. [2022-02-15 12:18:02,175 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) [2022-02-15 12:18:02,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 7685 transitions. [2022-02-15 12:18:02,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:18:02,179 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:18:02,179 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] [2022-02-15 12:18:02,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-02-15 12:18:02,380 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 [2022-02-15 12:18:02,380 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:18:02,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:18:02,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1430331001, now seen corresponding path program 30 times [2022-02-15 12:18:02,380 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:18:02,381 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313784297] [2022-02-15 12:18:02,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:18:02,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:18:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:18:02,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:02,521 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:18:02,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313784297] [2022-02-15 12:18:02,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313784297] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:18:02,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988762067] [2022-02-15 12:18:02,522 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:18:02,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:18:02,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:18:02,523 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) [2022-02-15 12:18:02,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-15 12:18:02,597 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-15 12:18:02,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:18:02,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:18:02,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:18:02,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:02,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:18:03,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:03,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988762067] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:18:03,380 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:18:03,380 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:18:03,380 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309966438] [2022-02-15 12:18:03,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:18:03,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:18:03,380 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:18:03,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:18:03,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:18:03,381 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) [2022-02-15 12:18:04,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:18:04,150 INFO L93 Difference]: Finished difference Result 3172 states and 9281 transitions. [2022-02-15 12:18:04,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 12:18:04,150 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 [2022-02-15 12:18:04,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:18:04,155 INFO L225 Difference]: With dead ends: 3172 [2022-02-15 12:18:04,155 INFO L226 Difference]: Without dead ends: 3031 [2022-02-15 12:18:04,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=418, Invalid=2774, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 12:18:04,156 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 485 mSDsluCounter, 2612 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 2620 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:18:04,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [485 Valid, 2620 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:18:04,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2022-02-15 12:18:04,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 2699. [2022-02-15 12:18:04,184 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) [2022-02-15 12:18:04,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 8008 transitions. [2022-02-15 12:18:04,190 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 8008 transitions. Word has length 70 [2022-02-15 12:18:04,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:18:04,190 INFO L470 AbstractCegarLoop]: Abstraction has 2699 states and 8008 transitions. [2022-02-15 12:18:04,190 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) [2022-02-15 12:18:04,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 8008 transitions. [2022-02-15 12:18:04,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:18:04,194 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:18:04,194 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] [2022-02-15 12:18:04,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-02-15 12:18:04,407 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 [2022-02-15 12:18:04,407 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:18:04,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:18:04,407 INFO L85 PathProgramCache]: Analyzing trace with hash -924716199, now seen corresponding path program 31 times [2022-02-15 12:18:04,407 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:18:04,407 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950000674] [2022-02-15 12:18:04,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:18:04,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:18:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:18:04,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:04,555 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:18:04,555 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950000674] [2022-02-15 12:18:04,555 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950000674] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:18:04,556 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150323513] [2022-02-15 12:18:04,556 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:18:04,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:18:04,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:18:04,557 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) [2022-02-15 12:18:04,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-15 12:18:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:18:04,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:18:04,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:18:04,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:04,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:18:05,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:05,517 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150323513] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:18:05,517 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:18:05,517 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:18:05,518 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278022494] [2022-02-15 12:18:05,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:18:05,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:18:05,518 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:18:05,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:18:05,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:18:05,519 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) [2022-02-15 12:18:10,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:18:10,840 INFO L93 Difference]: Finished difference Result 7297 states and 21595 transitions. [2022-02-15 12:18:10,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2022-02-15 12:18:10,841 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 [2022-02-15 12:18:10,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:18:10,852 INFO L225 Difference]: With dead ends: 7297 [2022-02-15 12:18:10,853 INFO L226 Difference]: Without dead ends: 7171 [2022-02-15 12:18:10,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11497 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4313, Invalid=25789, Unknown=0, NotChecked=0, Total=30102 [2022-02-15 12:18:10,855 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 983 mSDsluCounter, 2984 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:18:10,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [983 Valid, 2987 Invalid, 1673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:18:10,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7171 states. [2022-02-15 12:18:10,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7171 to 2923. [2022-02-15 12:18:10,941 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) [2022-02-15 12:18:10,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 8705 transitions. [2022-02-15 12:18:10,948 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 8705 transitions. Word has length 70 [2022-02-15 12:18:10,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:18:10,949 INFO L470 AbstractCegarLoop]: Abstraction has 2923 states and 8705 transitions. [2022-02-15 12:18:10,949 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) [2022-02-15 12:18:10,949 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 8705 transitions. [2022-02-15 12:18:10,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:18:10,954 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:18:10,954 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] [2022-02-15 12:18:10,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-02-15 12:18:11,176 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 [2022-02-15 12:18:11,176 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:18:11,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:18:11,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1785280403, now seen corresponding path program 32 times [2022-02-15 12:18:11,177 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:18:11,177 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831427865] [2022-02-15 12:18:11,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:18:11,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:18:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:18:11,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:11,313 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:18:11,313 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831427865] [2022-02-15 12:18:11,313 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831427865] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:18:11,313 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365487042] [2022-02-15 12:18:11,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:18:11,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:18:11,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:18:11,314 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) [2022-02-15 12:18:11,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-15 12:18:11,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:18:11,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:18:11,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:18:11,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:18:11,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:11,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:18:12,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:12,251 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365487042] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:18:12,251 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:18:12,251 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:18:12,251 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661581370] [2022-02-15 12:18:12,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:18:12,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:18:12,251 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:18:12,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:18:12,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=983, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:18:12,252 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) [2022-02-15 12:18:17,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:18:17,633 INFO L93 Difference]: Finished difference Result 7159 states and 21275 transitions. [2022-02-15 12:18:17,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2022-02-15 12:18:17,633 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 [2022-02-15 12:18:17,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:18:17,648 INFO L225 Difference]: With dead ends: 7159 [2022-02-15 12:18:17,648 INFO L226 Difference]: Without dead ends: 7019 [2022-02-15 12:18:17,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11450 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=4310, Invalid=25792, Unknown=0, NotChecked=0, Total=30102 [2022-02-15 12:18:17,650 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 1163 mSDsluCounter, 2890 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 2904 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:18:17,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1163 Valid, 2904 Invalid, 1614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:18:17,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7019 states. [2022-02-15 12:18:17,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7019 to 2943. [2022-02-15 12:18:17,713 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) [2022-02-15 12:18:17,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2943 states to 2943 states and 8756 transitions. [2022-02-15 12:18:17,719 INFO L78 Accepts]: Start accepts. Automaton has 2943 states and 8756 transitions. Word has length 70 [2022-02-15 12:18:17,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:18:17,719 INFO L470 AbstractCegarLoop]: Abstraction has 2943 states and 8756 transitions. [2022-02-15 12:18:17,719 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) [2022-02-15 12:18:17,719 INFO L276 IsEmpty]: Start isEmpty. Operand 2943 states and 8756 transitions. [2022-02-15 12:18:17,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:18:17,723 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:18:17,723 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] [2022-02-15 12:18:17,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-02-15 12:18:17,924 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 [2022-02-15 12:18:17,924 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:18:17,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:18:17,924 INFO L85 PathProgramCache]: Analyzing trace with hash 498671457, now seen corresponding path program 33 times [2022-02-15 12:18:17,924 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:18:17,925 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013142749] [2022-02-15 12:18:17,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:18:17,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:18:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:18:18,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:18,087 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:18:18,087 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013142749] [2022-02-15 12:18:18,087 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013142749] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:18:18,087 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231224104] [2022-02-15 12:18:18,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:18:18,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:18:18,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:18:18,092 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) [2022-02-15 12:18:18,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-15 12:18:18,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-15 12:18:18,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:18:18,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:18:18,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:18:18,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:18,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:18:19,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:19,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231224104] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:18:19,130 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:18:19,130 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:18:19,130 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848347772] [2022-02-15 12:18:19,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:18:19,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:18:19,130 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:18:19,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:18:19,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:18:19,131 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) [2022-02-15 12:18:25,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:18:25,749 INFO L93 Difference]: Finished difference Result 7372 states and 21849 transitions. [2022-02-15 12:18:25,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2022-02-15 12:18:25,749 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 [2022-02-15 12:18:25,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:18:25,763 INFO L225 Difference]: With dead ends: 7372 [2022-02-15 12:18:25,763 INFO L226 Difference]: Without dead ends: 7240 [2022-02-15 12:18:25,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15559 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=5327, Invalid=33679, Unknown=0, NotChecked=0, Total=39006 [2022-02-15 12:18:25,766 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 1187 mSDsluCounter, 3164 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 1726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:18:25,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1187 Valid, 3153 Invalid, 1726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1544 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:18:25,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7240 states. [2022-02-15 12:18:25,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7240 to 2911. [2022-02-15 12:18:25,823 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) [2022-02-15 12:18:25,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2911 states to 2911 states and 8668 transitions. [2022-02-15 12:18:25,830 INFO L78 Accepts]: Start accepts. Automaton has 2911 states and 8668 transitions. Word has length 70 [2022-02-15 12:18:25,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:18:25,830 INFO L470 AbstractCegarLoop]: Abstraction has 2911 states and 8668 transitions. [2022-02-15 12:18:25,831 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) [2022-02-15 12:18:25,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2911 states and 8668 transitions. [2022-02-15 12:18:25,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:18:25,863 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:18:25,863 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] [2022-02-15 12:18:25,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-02-15 12:18:26,063 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 [2022-02-15 12:18:26,064 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:18:26,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:18:26,064 INFO L85 PathProgramCache]: Analyzing trace with hash -880369499, now seen corresponding path program 34 times [2022-02-15 12:18:26,064 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:18:26,064 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995019375] [2022-02-15 12:18:26,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:18:26,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:18:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:18:26,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:26,213 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:18:26,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995019375] [2022-02-15 12:18:26,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995019375] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:18:26,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300296526] [2022-02-15 12:18:26,213 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:18:26,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:18:26,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:18:26,214 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) [2022-02-15 12:18:26,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-15 12:18:26,288 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:18:26,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:18:26,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-15 12:18:26,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:18:26,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:26,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:18:27,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:27,050 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300296526] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:18:27,050 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:18:27,050 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:18:27,050 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144906191] [2022-02-15 12:18:27,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:18:27,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:18:27,050 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:18:27,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:18:27,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:18:27,051 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) [2022-02-15 12:18:30,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:18:30,010 INFO L93 Difference]: Finished difference Result 6164 states and 18125 transitions. [2022-02-15 12:18:30,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-02-15 12:18:30,010 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 [2022-02-15 12:18:30,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:18:30,021 INFO L225 Difference]: With dead ends: 6164 [2022-02-15 12:18:30,021 INFO L226 Difference]: Without dead ends: 6053 [2022-02-15 12:18:30,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5871 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2442, Invalid=13560, Unknown=0, NotChecked=0, Total=16002 [2022-02-15 12:18:30,023 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 877 mSDsluCounter, 3381 mSDsCounter, 0 mSdLazyCounter, 1608 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 3370 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:18:30,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [877 Valid, 3370 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1608 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:18:30,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6053 states. [2022-02-15 12:18:30,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6053 to 2947. [2022-02-15 12:18:30,106 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) [2022-02-15 12:18:30,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2947 states to 2947 states and 8783 transitions. [2022-02-15 12:18:30,111 INFO L78 Accepts]: Start accepts. Automaton has 2947 states and 8783 transitions. Word has length 70 [2022-02-15 12:18:30,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:18:30,112 INFO L470 AbstractCegarLoop]: Abstraction has 2947 states and 8783 transitions. [2022-02-15 12:18:30,112 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) [2022-02-15 12:18:30,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2947 states and 8783 transitions. [2022-02-15 12:18:30,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:18:30,115 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:18:30,115 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] [2022-02-15 12:18:30,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-02-15 12:18:30,316 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 [2022-02-15 12:18:30,316 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:18:30,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:18:30,316 INFO L85 PathProgramCache]: Analyzing trace with hash -438219463, now seen corresponding path program 35 times [2022-02-15 12:18:30,316 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:18:30,316 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269536587] [2022-02-15 12:18:30,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:18:30,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:18:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:18:30,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:30,446 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:18:30,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269536587] [2022-02-15 12:18:30,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269536587] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:18:30,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996464980] [2022-02-15 12:18:30,446 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:18:30,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:18:30,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:18:30,447 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) [2022-02-15 12:18:30,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-15 12:18:30,515 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:18:30,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:18:30,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:18:30,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:18:30,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:30,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 12:18:30,823 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996464980] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:18:30,823 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 12:18:30,823 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 25 [2022-02-15 12:18:30,823 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870045496] [2022-02-15 12:18:30,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:18:30,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 12:18:30,824 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:18:30,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 12:18:30,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2022-02-15 12:18:30,824 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) [2022-02-15 12:18:31,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:18:31,262 INFO L93 Difference]: Finished difference Result 3382 states and 9952 transitions. [2022-02-15 12:18:31,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 12:18:31,262 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 [2022-02-15 12:18:31,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:18:31,267 INFO L225 Difference]: With dead ends: 3382 [2022-02-15 12:18:31,267 INFO L226 Difference]: Without dead ends: 3315 [2022-02-15 12:18:31,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=336, Invalid=1734, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 12:18:31,268 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 245 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:18:31,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 1045 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:18:31,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3315 states. [2022-02-15 12:18:31,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3315 to 2859. [2022-02-15 12:18:31,309 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) [2022-02-15 12:18:31,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 8497 transitions. [2022-02-15 12:18:31,314 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 8497 transitions. Word has length 70 [2022-02-15 12:18:31,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:18:31,314 INFO L470 AbstractCegarLoop]: Abstraction has 2859 states and 8497 transitions. [2022-02-15 12:18:31,314 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) [2022-02-15 12:18:31,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 8497 transitions. [2022-02-15 12:18:31,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:18:31,318 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:18:31,318 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] [2022-02-15 12:18:31,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-02-15 12:18:31,518 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 [2022-02-15 12:18:31,518 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:18:31,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:18:31,519 INFO L85 PathProgramCache]: Analyzing trace with hash -2023190157, now seen corresponding path program 36 times [2022-02-15 12:18:31,519 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:18:31,519 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845689054] [2022-02-15 12:18:31,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:18:31,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:18:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:18:31,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:31,665 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:18:31,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845689054] [2022-02-15 12:18:31,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845689054] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:18:31,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350685627] [2022-02-15 12:18:31,665 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:18:31,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:18:31,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:18:31,666 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) [2022-02-15 12:18:31,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-15 12:18:31,735 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-15 12:18:31,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:18:31,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:18:31,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:18:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:32,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:18:32,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:32,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350685627] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:18:32,649 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:18:32,649 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:18:32,649 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781420238] [2022-02-15 12:18:32,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:18:32,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:18:32,649 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:18:32,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:18:32,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=972, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:18:32,650 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) [2022-02-15 12:18:39,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:18:39,933 INFO L93 Difference]: Finished difference Result 7388 states and 21882 transitions. [2022-02-15 12:18:39,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2022-02-15 12:18:39,934 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 [2022-02-15 12:18:39,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:18:39,945 INFO L225 Difference]: With dead ends: 7388 [2022-02-15 12:18:39,945 INFO L226 Difference]: Without dead ends: 7248 [2022-02-15 12:18:39,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19327 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=7100, Invalid=39772, Unknown=0, NotChecked=0, Total=46872 [2022-02-15 12:18:39,948 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 1200 mSDsluCounter, 3175 mSDsCounter, 0 mSdLazyCounter, 1646 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 3161 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:18:39,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1200 Valid, 3161 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1646 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:18:39,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7248 states. [2022-02-15 12:18:40,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7248 to 2899. [2022-02-15 12:18:40,005 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) [2022-02-15 12:18:40,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 8623 transitions. [2022-02-15 12:18:40,011 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 8623 transitions. Word has length 70 [2022-02-15 12:18:40,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:18:40,011 INFO L470 AbstractCegarLoop]: Abstraction has 2899 states and 8623 transitions. [2022-02-15 12:18:40,012 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) [2022-02-15 12:18:40,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 8623 transitions. [2022-02-15 12:18:40,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:18:40,016 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:18:40,016 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] [2022-02-15 12:18:40,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-02-15 12:18:40,216 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 [2022-02-15 12:18:40,216 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:18:40,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:18:40,217 INFO L85 PathProgramCache]: Analyzing trace with hash 985168193, now seen corresponding path program 37 times [2022-02-15 12:18:40,217 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:18:40,217 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718779116] [2022-02-15 12:18:40,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:18:40,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:18:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:18:40,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:40,349 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:18:40,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718779116] [2022-02-15 12:18:40,349 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718779116] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:18:40,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011684074] [2022-02-15 12:18:40,349 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:18:40,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:18:40,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:18:40,350 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) [2022-02-15 12:18:40,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-15 12:18:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:18:40,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:18:40,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:18:40,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:40,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:18:41,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:41,307 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011684074] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:18:41,307 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:18:41,307 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:18:41,307 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649409030] [2022-02-15 12:18:41,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:18:41,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:18:41,307 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:18:41,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:18:41,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:18:41,308 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) [2022-02-15 12:18:49,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:18:49,997 INFO L93 Difference]: Finished difference Result 7844 states and 23020 transitions. [2022-02-15 12:18:49,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-02-15 12:18:49,997 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 [2022-02-15 12:18:49,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:18:50,012 INFO L225 Difference]: With dead ends: 7844 [2022-02-15 12:18:50,012 INFO L226 Difference]: Without dead ends: 7712 [2022-02-15 12:18:50,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25481 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=8557, Invalid=51223, Unknown=0, NotChecked=0, Total=59780 [2022-02-15 12:18:50,016 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 1502 mSDsluCounter, 2703 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:18:50,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1502 Valid, 2725 Invalid, 1662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:18:50,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7712 states. [2022-02-15 12:18:50,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7712 to 2875. [2022-02-15 12:18:50,081 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) [2022-02-15 12:18:50,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 8557 transitions. [2022-02-15 12:18:50,086 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 8557 transitions. Word has length 70 [2022-02-15 12:18:50,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:18:50,086 INFO L470 AbstractCegarLoop]: Abstraction has 2875 states and 8557 transitions. [2022-02-15 12:18:50,086 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) [2022-02-15 12:18:50,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 8557 transitions. [2022-02-15 12:18:50,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:18:50,090 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:18:50,090 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] [2022-02-15 12:18:50,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-02-15 12:18:50,290 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 [2022-02-15 12:18:50,291 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:18:50,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:18:50,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1261426403, now seen corresponding path program 38 times [2022-02-15 12:18:50,291 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:18:50,291 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543271824] [2022-02-15 12:18:50,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:18:50,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:18:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:18:50,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:50,437 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:18:50,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543271824] [2022-02-15 12:18:50,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543271824] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:18:50,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543536829] [2022-02-15 12:18:50,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:18:50,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:18:50,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:18:50,438 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) [2022-02-15 12:18:50,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-15 12:18:50,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:18:50,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:18:50,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:18:50,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:18:50,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:50,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:18:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:51,427 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543536829] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:18:51,427 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:18:51,427 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:18:51,427 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017612503] [2022-02-15 12:18:51,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:18:51,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:18:51,427 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:18:51,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:18:51,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:18:51,428 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) [2022-02-15 12:18:52,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:18:52,955 INFO L93 Difference]: Finished difference Result 3171 states and 9296 transitions. [2022-02-15 12:18:52,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-15 12:18:52,955 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 [2022-02-15 12:18:52,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:18:52,961 INFO L225 Difference]: With dead ends: 3171 [2022-02-15 12:18:52,961 INFO L226 Difference]: Without dead ends: 3108 [2022-02-15 12:18:52,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1955 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1327, Invalid=5645, Unknown=0, NotChecked=0, Total=6972 [2022-02-15 12:18:52,962 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 768 mSDsluCounter, 1985 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 2018 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:18:52,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 2018 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:18:52,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2022-02-15 12:18:53,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 2895. [2022-02-15 12:18:53,015 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) [2022-02-15 12:18:53,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 8616 transitions. [2022-02-15 12:18:53,020 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 8616 transitions. Word has length 70 [2022-02-15 12:18:53,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:18:53,021 INFO L470 AbstractCegarLoop]: Abstraction has 2895 states and 8616 transitions. [2022-02-15 12:18:53,021 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) [2022-02-15 12:18:53,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 8616 transitions. [2022-02-15 12:18:53,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:18:53,024 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:18:53,024 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] [2022-02-15 12:18:53,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-02-15 12:18:53,225 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 [2022-02-15 12:18:53,225 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:18:53,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:18:53,225 INFO L85 PathProgramCache]: Analyzing trace with hash -450663193, now seen corresponding path program 39 times [2022-02-15 12:18:53,225 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:18:53,226 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421134519] [2022-02-15 12:18:53,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:18:53,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:18:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:18:53,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:53,367 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:18:53,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421134519] [2022-02-15 12:18:53,367 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421134519] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:18:53,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916739075] [2022-02-15 12:18:53,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:18:53,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:18:53,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:18:53,368 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) [2022-02-15 12:18:53,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-15 12:18:53,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-15 12:18:53,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:18:53,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:18:53,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:18:53,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:53,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:18:54,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:54,315 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916739075] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:18:54,315 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:18:54,315 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:18:54,315 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371207740] [2022-02-15 12:18:54,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:18:54,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:18:54,316 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:18:54,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:18:54,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:18:54,316 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) [2022-02-15 12:18:55,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:18:55,756 INFO L93 Difference]: Finished difference Result 3164 states and 9233 transitions. [2022-02-15 12:18:55,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-15 12:18:55,756 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 [2022-02-15 12:18:55,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:18:55,762 INFO L225 Difference]: With dead ends: 3164 [2022-02-15 12:18:55,762 INFO L226 Difference]: Without dead ends: 3101 [2022-02-15 12:18:55,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1884 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1297, Invalid=5509, Unknown=0, NotChecked=0, Total=6806 [2022-02-15 12:18:55,763 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 732 mSDsluCounter, 1902 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:18:55,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 1947 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:18:55,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3101 states. [2022-02-15 12:18:55,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3101 to 2263. [2022-02-15 12:18:55,791 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) [2022-02-15 12:18:55,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 6542 transitions. [2022-02-15 12:18:55,794 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 6542 transitions. Word has length 70 [2022-02-15 12:18:55,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:18:55,795 INFO L470 AbstractCegarLoop]: Abstraction has 2263 states and 6542 transitions. [2022-02-15 12:18:55,795 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) [2022-02-15 12:18:55,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 6542 transitions. [2022-02-15 12:18:55,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:18:55,797 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:18:55,797 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] [2022-02-15 12:18:55,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-02-15 12:18:55,998 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 [2022-02-15 12:18:55,998 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:18:55,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:18:55,998 INFO L85 PathProgramCache]: Analyzing trace with hash -2035633887, now seen corresponding path program 40 times [2022-02-15 12:18:55,998 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:18:55,998 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418178570] [2022-02-15 12:18:55,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:18:55,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:18:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:18:56,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:56,131 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:18:56,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418178570] [2022-02-15 12:18:56,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418178570] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:18:56,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25351612] [2022-02-15 12:18:56,131 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:18:56,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:18:56,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:18:56,132 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) [2022-02-15 12:18:56,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-15 12:18:56,205 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:18:56,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:18:56,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-15 12:18:56,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:18:56,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:56,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:18:56,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:18:56,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25351612] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:18:56,928 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:18:56,928 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:18:56,928 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439746109] [2022-02-15 12:18:56,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:18:56,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:18:56,928 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:18:56,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:18:56,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:18:56,929 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) [2022-02-15 12:19:01,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:19:01,050 INFO L93 Difference]: Finished difference Result 4510 states and 12932 transitions. [2022-02-15 12:19:01,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-02-15 12:19:01,051 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 [2022-02-15 12:19:01,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:19:01,059 INFO L225 Difference]: With dead ends: 4510 [2022-02-15 12:19:01,059 INFO L226 Difference]: Without dead ends: 4398 [2022-02-15 12:19:01,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10124 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4209, Invalid=22851, Unknown=0, NotChecked=0, Total=27060 [2022-02-15 12:19:01,062 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 1099 mSDsluCounter, 3642 mSDsCounter, 0 mSdLazyCounter, 1961 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 3642 SdHoareTripleChecker+Invalid, 2120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 12:19:01,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1099 Valid, 3642 Invalid, 2120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1961 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 12:19:01,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4398 states. [2022-02-15 12:19:01,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4398 to 2271. [2022-02-15 12:19:01,099 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) [2022-02-15 12:19:01,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 6576 transitions. [2022-02-15 12:19:01,103 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 6576 transitions. Word has length 70 [2022-02-15 12:19:01,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:19:01,103 INFO L470 AbstractCegarLoop]: Abstraction has 2271 states and 6576 transitions. [2022-02-15 12:19:01,103 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) [2022-02-15 12:19:01,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 6576 transitions. [2022-02-15 12:19:01,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:19:01,106 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:19:01,106 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] [2022-02-15 12:19:01,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-02-15 12:19:01,307 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 [2022-02-15 12:19:01,307 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:19:01,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:19:01,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1492662985, now seen corresponding path program 41 times [2022-02-15 12:19:01,307 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:19:01,308 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095445571] [2022-02-15 12:19:01,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:19:01,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:19:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:19:01,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:01,440 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:19:01,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095445571] [2022-02-15 12:19:01,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095445571] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:19:01,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465495943] [2022-02-15 12:19:01,440 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:19:01,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:19:01,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:19:01,442 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) [2022-02-15 12:19:01,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-15 12:19:01,512 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:19:01,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:19:01,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:19:01,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:19:01,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:01,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:19:02,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:02,415 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465495943] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:19:02,415 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:19:02,415 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:19:02,415 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111422007] [2022-02-15 12:19:02,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:19:02,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:19:02,416 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:19:02,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:19:02,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=987, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:19:02,416 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) [2022-02-15 12:19:05,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:19:05,512 INFO L93 Difference]: Finished difference Result 4929 states and 14107 transitions. [2022-02-15 12:19:05,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-02-15 12:19:05,512 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 [2022-02-15 12:19:05,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:19:05,520 INFO L225 Difference]: With dead ends: 4929 [2022-02-15 12:19:05,520 INFO L226 Difference]: Without dead ends: 4797 [2022-02-15 12:19:05,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4832 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1870, Invalid=12172, Unknown=0, NotChecked=0, Total=14042 [2022-02-15 12:19:05,522 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 874 mSDsluCounter, 3055 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 3033 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:19:05,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [874 Valid, 3033 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:19:05,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4797 states. [2022-02-15 12:19:05,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4797 to 2279. [2022-02-15 12:19:05,555 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) [2022-02-15 12:19:05,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 6598 transitions. [2022-02-15 12:19:05,559 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 6598 transitions. Word has length 70 [2022-02-15 12:19:05,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:19:05,559 INFO L470 AbstractCegarLoop]: Abstraction has 2279 states and 6598 transitions. [2022-02-15 12:19:05,559 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) [2022-02-15 12:19:05,559 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 6598 transitions. [2022-02-15 12:19:05,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:19:05,562 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:19:05,562 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] [2022-02-15 12:19:05,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-02-15 12:19:05,762 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 [2022-02-15 12:19:05,763 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:19:05,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:19:05,763 INFO L85 PathProgramCache]: Analyzing trace with hash 54048609, now seen corresponding path program 42 times [2022-02-15 12:19:05,763 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:19:05,763 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829525731] [2022-02-15 12:19:05,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:19:05,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:19:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:19:05,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:05,907 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:19:05,907 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829525731] [2022-02-15 12:19:05,908 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829525731] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:19:05,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996142828] [2022-02-15 12:19:05,908 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:19:05,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:19:05,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:19:05,909 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) [2022-02-15 12:19:05,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-15 12:19:05,983 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-15 12:19:05,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:19:05,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:19:05,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:19:06,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:06,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:19:06,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:06,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996142828] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:19:06,669 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:19:06,669 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:19:06,669 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198220807] [2022-02-15 12:19:06,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:19:06,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:19:06,670 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:19:06,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:19:06,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:19:06,670 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) [2022-02-15 12:19:07,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:19:07,773 INFO L93 Difference]: Finished difference Result 2897 states and 8239 transitions. [2022-02-15 12:19:07,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-15 12:19:07,773 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 [2022-02-15 12:19:07,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:19:07,778 INFO L225 Difference]: With dead ends: 2897 [2022-02-15 12:19:07,778 INFO L226 Difference]: Without dead ends: 2756 [2022-02-15 12:19:07,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1558 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=825, Invalid=4725, Unknown=0, NotChecked=0, Total=5550 [2022-02-15 12:19:07,779 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 663 mSDsluCounter, 2464 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 2472 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:19:07,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [663 Valid, 2472 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:19:07,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2022-02-15 12:19:07,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2183. [2022-02-15 12:19:07,809 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) [2022-02-15 12:19:07,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 6306 transitions. [2022-02-15 12:19:07,817 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 6306 transitions. Word has length 70 [2022-02-15 12:19:07,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:19:07,817 INFO L470 AbstractCegarLoop]: Abstraction has 2183 states and 6306 transitions. [2022-02-15 12:19:07,817 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) [2022-02-15 12:19:07,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 6306 transitions. [2022-02-15 12:19:07,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:19:07,821 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:19:07,822 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] [2022-02-15 12:19:07,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-02-15 12:19:08,033 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 [2022-02-15 12:19:08,034 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:19:08,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:19:08,034 INFO L85 PathProgramCache]: Analyzing trace with hash 2133956963, now seen corresponding path program 43 times [2022-02-15 12:19:08,034 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:19:08,034 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762500607] [2022-02-15 12:19:08,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:19:08,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:19:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:19:08,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:08,197 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:19:08,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762500607] [2022-02-15 12:19:08,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762500607] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:19:08,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518767419] [2022-02-15 12:19:08,197 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:19:08,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:19:08,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:19:08,199 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) [2022-02-15 12:19:08,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-15 12:19:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:19:08,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:19:08,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:19:08,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:08,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:19:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:09,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518767419] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:19:09,252 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:19:09,253 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:19:09,253 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552719288] [2022-02-15 12:19:09,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:19:09,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:19:09,253 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:19:09,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:19:09,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:19:09,254 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) [2022-02-15 12:19:11,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:19:11,026 INFO L93 Difference]: Finished difference Result 4598 states and 13080 transitions. [2022-02-15 12:19:11,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-15 12:19:11,026 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 [2022-02-15 12:19:11,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:19:11,035 INFO L225 Difference]: With dead ends: 4598 [2022-02-15 12:19:11,035 INFO L226 Difference]: Without dead ends: 4523 [2022-02-15 12:19:11,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2152 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1064, Invalid=5908, Unknown=0, NotChecked=0, Total=6972 [2022-02-15 12:19:11,036 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 689 mSDsluCounter, 2918 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 2941 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:19:11,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 2941 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:19:11,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4523 states. [2022-02-15 12:19:11,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4523 to 2247. [2022-02-15 12:19:11,092 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) [2022-02-15 12:19:11,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 6481 transitions. [2022-02-15 12:19:11,096 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 6481 transitions. Word has length 70 [2022-02-15 12:19:11,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:19:11,096 INFO L470 AbstractCegarLoop]: Abstraction has 2247 states and 6481 transitions. [2022-02-15 12:19:11,097 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) [2022-02-15 12:19:11,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 6481 transitions. [2022-02-15 12:19:11,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:19:11,099 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:19:11,099 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] [2022-02-15 12:19:11,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-02-15 12:19:11,300 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 [2022-02-15 12:19:11,300 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:19:11,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:19:11,301 INFO L85 PathProgramCache]: Analyzing trace with hash 548986269, now seen corresponding path program 44 times [2022-02-15 12:19:11,301 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:19:11,301 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624038576] [2022-02-15 12:19:11,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:19:11,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:19:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:19:11,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:11,447 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:19:11,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624038576] [2022-02-15 12:19:11,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624038576] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:19:11,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280600571] [2022-02-15 12:19:11,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:19:11,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:19:11,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:19:11,448 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) [2022-02-15 12:19:11,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-15 12:19:11,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:19:11,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:19:11,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:19:11,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:19:11,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:11,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:19:12,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:12,409 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280600571] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:19:12,409 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:19:12,410 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:19:12,410 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443794332] [2022-02-15 12:19:12,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:19:12,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:19:12,410 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:19:12,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:19:12,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:19:12,411 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) [2022-02-15 12:19:14,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:19:14,206 INFO L93 Difference]: Finished difference Result 4388 states and 12581 transitions. [2022-02-15 12:19:14,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-15 12:19:14,207 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 [2022-02-15 12:19:14,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:19:14,214 INFO L225 Difference]: With dead ends: 4388 [2022-02-15 12:19:14,215 INFO L226 Difference]: Without dead ends: 4248 [2022-02-15 12:19:14,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2279 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1073, Invalid=6237, Unknown=0, NotChecked=0, Total=7310 [2022-02-15 12:19:14,216 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 646 mSDsluCounter, 3018 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 3006 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:19:14,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [646 Valid, 3006 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:19:14,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4248 states. [2022-02-15 12:19:14,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4248 to 2267. [2022-02-15 12:19:14,254 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) [2022-02-15 12:19:14,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2267 states to 2267 states and 6532 transitions. [2022-02-15 12:19:14,258 INFO L78 Accepts]: Start accepts. Automaton has 2267 states and 6532 transitions. Word has length 70 [2022-02-15 12:19:14,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:19:14,258 INFO L470 AbstractCegarLoop]: Abstraction has 2267 states and 6532 transitions. [2022-02-15 12:19:14,258 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) [2022-02-15 12:19:14,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2267 states and 6532 transitions. [2022-02-15 12:19:14,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:19:14,261 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:19:14,261 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] [2022-02-15 12:19:14,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-02-15 12:19:14,461 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 [2022-02-15 12:19:14,462 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:19:14,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:19:14,462 INFO L85 PathProgramCache]: Analyzing trace with hash -737622677, now seen corresponding path program 45 times [2022-02-15 12:19:14,462 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:19:14,462 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389617698] [2022-02-15 12:19:14,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:19:14,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:19:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:19:14,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:14,618 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:19:14,618 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389617698] [2022-02-15 12:19:14,618 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389617698] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:19:14,618 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343509696] [2022-02-15 12:19:14,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:19:14,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:19:14,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:19:14,621 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) [2022-02-15 12:19:14,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-15 12:19:14,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-15 12:19:14,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:19:14,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:19:14,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:19:15,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:15,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:19:15,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:15,605 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343509696] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:19:15,605 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:19:15,605 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:19:15,605 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770771859] [2022-02-15 12:19:15,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:19:15,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:19:15,606 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:19:15,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:19:15,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:19:15,606 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) [2022-02-15 12:19:18,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:19:18,261 INFO L93 Difference]: Finished difference Result 4685 states and 13369 transitions. [2022-02-15 12:19:18,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-15 12:19:18,262 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 [2022-02-15 12:19:18,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:19:18,269 INFO L225 Difference]: With dead ends: 4685 [2022-02-15 12:19:18,269 INFO L226 Difference]: Without dead ends: 4553 [2022-02-15 12:19:18,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4133 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1639, Invalid=10351, Unknown=0, NotChecked=0, Total=11990 [2022-02-15 12:19:18,270 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 881 mSDsluCounter, 2957 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 2960 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:19:18,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 2960 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:19:18,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4553 states. [2022-02-15 12:19:18,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4553 to 2239. [2022-02-15 12:19:18,308 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) [2022-02-15 12:19:18,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2239 states to 2239 states and 6455 transitions. [2022-02-15 12:19:18,313 INFO L78 Accepts]: Start accepts. Automaton has 2239 states and 6455 transitions. Word has length 70 [2022-02-15 12:19:18,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:19:18,313 INFO L470 AbstractCegarLoop]: Abstraction has 2239 states and 6455 transitions. [2022-02-15 12:19:18,313 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) [2022-02-15 12:19:18,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2239 states and 6455 transitions. [2022-02-15 12:19:18,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:19:18,316 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:19:18,316 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] [2022-02-15 12:19:18,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-02-15 12:19:18,516 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 [2022-02-15 12:19:18,517 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:19:18,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:19:18,517 INFO L85 PathProgramCache]: Analyzing trace with hash -2116663633, now seen corresponding path program 46 times [2022-02-15 12:19:18,517 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:19:18,517 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416287180] [2022-02-15 12:19:18,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:19:18,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:19:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:19:18,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:18,659 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:19:18,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416287180] [2022-02-15 12:19:18,659 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416287180] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:19:18,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82017091] [2022-02-15 12:19:18,659 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:19:18,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:19:18,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:19:18,661 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) [2022-02-15 12:19:18,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-15 12:19:18,737 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:19:18,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:19:18,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-15 12:19:18,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:19:19,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:19,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:19:19,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:19,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82017091] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:19:19,471 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:19:19,471 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:19:19,471 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851080243] [2022-02-15 12:19:19,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:19:19,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:19:19,472 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:19:19,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:19:19,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:19:19,472 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) [2022-02-15 12:19:20,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:19:20,404 INFO L93 Difference]: Finished difference Result 3694 states and 10488 transitions. [2022-02-15 12:19:20,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 12:19:20,404 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 [2022-02-15 12:19:20,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:19:20,409 INFO L225 Difference]: With dead ends: 3694 [2022-02-15 12:19:20,410 INFO L226 Difference]: Without dead ends: 3583 [2022-02-15 12:19:20,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=420, Invalid=3002, Unknown=0, NotChecked=0, Total=3422 [2022-02-15 12:19:20,410 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 470 mSDsluCounter, 3567 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 3531 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:19:20,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 3531 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:19:20,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2022-02-15 12:19:20,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 2261. [2022-02-15 12:19:20,441 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) [2022-02-15 12:19:20,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 6511 transitions. [2022-02-15 12:19:20,446 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 6511 transitions. Word has length 70 [2022-02-15 12:19:20,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:19:20,447 INFO L470 AbstractCegarLoop]: Abstraction has 2261 states and 6511 transitions. [2022-02-15 12:19:20,447 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) [2022-02-15 12:19:20,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 6511 transitions. [2022-02-15 12:19:20,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:19:20,451 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:19:20,451 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] [2022-02-15 12:19:20,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-02-15 12:19:20,667 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 [2022-02-15 12:19:20,667 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:19:20,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:19:20,668 INFO L85 PathProgramCache]: Analyzing trace with hash 739689287, now seen corresponding path program 47 times [2022-02-15 12:19:20,668 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:19:20,668 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075908569] [2022-02-15 12:19:20,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:19:20,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:19:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:19:20,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:20,799 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:19:20,799 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075908569] [2022-02-15 12:19:20,799 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075908569] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:19:20,799 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298135354] [2022-02-15 12:19:20,799 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:19:20,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:19:20,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:19:20,800 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) [2022-02-15 12:19:20,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-15 12:19:20,878 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:19:20,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:19:20,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:19:20,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:19:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:21,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:19:21,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:21,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298135354] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:19:21,534 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:19:21,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:19:21,534 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944974155] [2022-02-15 12:19:21,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:19:21,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:19:21,535 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:19:21,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:19:21,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:19:21,535 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) [2022-02-15 12:19:22,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:19:22,382 INFO L93 Difference]: Finished difference Result 2798 states and 7920 transitions. [2022-02-15 12:19:22,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-15 12:19:22,382 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 [2022-02-15 12:19:22,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:19:22,386 INFO L225 Difference]: With dead ends: 2798 [2022-02-15 12:19:22,386 INFO L226 Difference]: Without dead ends: 2657 [2022-02-15 12:19:22,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=473, Invalid=3187, Unknown=0, NotChecked=0, Total=3660 [2022-02-15 12:19:22,387 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 642 mSDsluCounter, 2404 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 12:19:22,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 2422 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 12:19:22,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2022-02-15 12:19:22,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 2257. [2022-02-15 12:19:22,425 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) [2022-02-15 12:19:22,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 6476 transitions. [2022-02-15 12:19:22,429 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 6476 transitions. Word has length 70 [2022-02-15 12:19:22,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:19:22,429 INFO L470 AbstractCegarLoop]: Abstraction has 2257 states and 6476 transitions. [2022-02-15 12:19:22,429 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) [2022-02-15 12:19:22,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 6476 transitions. [2022-02-15 12:19:22,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:19:22,432 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:19:22,432 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] [2022-02-15 12:19:22,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-02-15 12:19:22,632 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 [2022-02-15 12:19:22,633 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:19:22,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:19:22,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1789143841, now seen corresponding path program 48 times [2022-02-15 12:19:22,633 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:19:22,633 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659840853] [2022-02-15 12:19:22,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:19:22,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:19:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:19:22,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:22,782 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:19:22,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659840853] [2022-02-15 12:19:22,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659840853] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:19:22,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263572573] [2022-02-15 12:19:22,783 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:19:22,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:19:22,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:19:22,784 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) [2022-02-15 12:19:22,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-02-15 12:19:22,875 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-15 12:19:22,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:19:22,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:19:22,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:19:23,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:23,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:19:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:23,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263572573] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:19:23,721 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:19:23,721 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:19:23,721 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809814601] [2022-02-15 12:19:23,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:19:23,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:19:23,721 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:19:23,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:19:23,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:19:23,722 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) [2022-02-15 12:19:25,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:19:25,653 INFO L93 Difference]: Finished difference Result 4626 states and 12971 transitions. [2022-02-15 12:19:25,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-15 12:19:25,653 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 [2022-02-15 12:19:25,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:19:25,660 INFO L225 Difference]: With dead ends: 4626 [2022-02-15 12:19:25,660 INFO L226 Difference]: Without dead ends: 4327 [2022-02-15 12:19:25,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2369 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=892, Invalid=6590, Unknown=0, NotChecked=0, Total=7482 [2022-02-15 12:19:25,661 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 1051 mSDsluCounter, 2363 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 2366 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:19:25,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 2366 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:19:25,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4327 states. [2022-02-15 12:19:25,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4327 to 2221. [2022-02-15 12:19:25,700 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) [2022-02-15 12:19:25,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 6190 transitions. [2022-02-15 12:19:25,704 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 6190 transitions. Word has length 70 [2022-02-15 12:19:25,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:19:25,704 INFO L470 AbstractCegarLoop]: Abstraction has 2221 states and 6190 transitions. [2022-02-15 12:19:25,704 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) [2022-02-15 12:19:25,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 6190 transitions. [2022-02-15 12:19:25,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:19:25,707 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:19:25,707 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] [2022-02-15 12:19:25,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-02-15 12:19:25,907 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 [2022-02-15 12:19:25,908 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:19:25,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:19:25,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1345581259, now seen corresponding path program 49 times [2022-02-15 12:19:25,908 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:19:25,908 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827830064] [2022-02-15 12:19:25,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:19:25,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:19:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:19:26,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:26,051 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:19:26,051 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827830064] [2022-02-15 12:19:26,051 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827830064] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:19:26,051 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800688734] [2022-02-15 12:19:26,051 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:19:26,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:19:26,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:19:26,052 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) [2022-02-15 12:19:26,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-02-15 12:19:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:19:26,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:19:26,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:19:26,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:26,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:19:27,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:27,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800688734] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:19:27,085 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:19:27,085 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:19:27,085 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008950209] [2022-02-15 12:19:27,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:19:27,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:19:27,085 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:19:27,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:19:27,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:19:27,086 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) [2022-02-15 12:19:28,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:19:28,283 INFO L93 Difference]: Finished difference Result 3277 states and 9055 transitions. [2022-02-15 12:19:28,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-15 12:19:28,283 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 [2022-02-15 12:19:28,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:19:28,288 INFO L225 Difference]: With dead ends: 3277 [2022-02-15 12:19:28,288 INFO L226 Difference]: Without dead ends: 3130 [2022-02-15 12:19:28,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1444 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=753, Invalid=4359, Unknown=0, NotChecked=0, Total=5112 [2022-02-15 12:19:28,289 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 433 mSDsluCounter, 1912 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 12:19:28,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 1947 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 12:19:28,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3130 states. [2022-02-15 12:19:28,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3130 to 2269. [2022-02-15 12:19:28,317 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) [2022-02-15 12:19:28,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 6322 transitions. [2022-02-15 12:19:28,320 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 6322 transitions. Word has length 70 [2022-02-15 12:19:28,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:19:28,320 INFO L470 AbstractCegarLoop]: Abstraction has 2269 states and 6322 transitions. [2022-02-15 12:19:28,321 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) [2022-02-15 12:19:28,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 6322 transitions. [2022-02-15 12:19:28,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:19:28,323 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:19:28,323 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] [2022-02-15 12:19:28,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-02-15 12:19:28,523 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 [2022-02-15 12:19:28,524 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:19:28,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:19:28,524 INFO L85 PathProgramCache]: Analyzing trace with hash -424984627, now seen corresponding path program 50 times [2022-02-15 12:19:28,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:19:28,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485306101] [2022-02-15 12:19:28,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:19:28,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:19:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:19:28,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:28,664 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:19:28,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485306101] [2022-02-15 12:19:28,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485306101] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:19:28,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988873372] [2022-02-15 12:19:28,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:19:28,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:19:28,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:19:28,666 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) [2022-02-15 12:19:28,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-02-15 12:19:28,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:19:28,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:19:28,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:19:28,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:19:29,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:29,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:19:29,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:29,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988873372] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:19:29,658 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:19:29,658 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:19:29,658 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694974487] [2022-02-15 12:19:29,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:19:29,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:19:29,659 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:19:29,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:19:29,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:19:29,659 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) [2022-02-15 12:19:31,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:19:31,023 INFO L93 Difference]: Finished difference Result 3297 states and 9110 transitions. [2022-02-15 12:19:31,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-15 12:19:31,024 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 [2022-02-15 12:19:31,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:19:31,029 INFO L225 Difference]: With dead ends: 3297 [2022-02-15 12:19:31,030 INFO L226 Difference]: Without dead ends: 3222 [2022-02-15 12:19:31,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=802, Invalid=4454, Unknown=0, NotChecked=0, Total=5256 [2022-02-15 12:19:31,031 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 408 mSDsluCounter, 2122 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:19:31,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 2178 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:19:31,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2022-02-15 12:19:31,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 2273. [2022-02-15 12:19:31,061 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) [2022-02-15 12:19:31,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 6333 transitions. [2022-02-15 12:19:31,066 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 6333 transitions. Word has length 70 [2022-02-15 12:19:31,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:19:31,066 INFO L470 AbstractCegarLoop]: Abstraction has 2273 states and 6333 transitions. [2022-02-15 12:19:31,066 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) [2022-02-15 12:19:31,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 6333 transitions. [2022-02-15 12:19:31,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:19:31,069 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:19:31,069 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] [2022-02-15 12:19:31,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-02-15 12:19:31,269 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 [2022-02-15 12:19:31,270 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:19:31,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:19:31,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1523233091, now seen corresponding path program 51 times [2022-02-15 12:19:31,270 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:19:31,270 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759423166] [2022-02-15 12:19:31,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:19:31,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:19:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:19:31,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:31,417 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:19:31,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759423166] [2022-02-15 12:19:31,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759423166] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:19:31,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878308259] [2022-02-15 12:19:31,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:19:31,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:19:31,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:19:31,420 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) [2022-02-15 12:19:31,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-02-15 12:19:31,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-15 12:19:31,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:19:31,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:19:31,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:19:31,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:31,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:19:32,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:32,435 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878308259] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:19:32,435 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:19:32,435 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:19:32,435 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339349056] [2022-02-15 12:19:32,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:19:32,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:19:32,436 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:19:32,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:19:32,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=992, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:19:32,436 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) [2022-02-15 12:19:35,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:19:35,333 INFO L93 Difference]: Finished difference Result 3789 states and 10531 transitions. [2022-02-15 12:19:35,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-15 12:19:35,333 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 [2022-02-15 12:19:35,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:19:35,339 INFO L225 Difference]: With dead ends: 3789 [2022-02-15 12:19:35,340 INFO L226 Difference]: Without dead ends: 3714 [2022-02-15 12:19:35,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3506 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1972, Invalid=9158, Unknown=0, NotChecked=0, Total=11130 [2022-02-15 12:19:35,341 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 524 mSDsluCounter, 2260 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 2302 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:19:35,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 2302 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:19:35,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2022-02-15 12:19:35,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 2297. [2022-02-15 12:19:35,373 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) [2022-02-15 12:19:35,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2297 states to 2297 states and 6407 transitions. [2022-02-15 12:19:35,377 INFO L78 Accepts]: Start accepts. Automaton has 2297 states and 6407 transitions. Word has length 70 [2022-02-15 12:19:35,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:19:35,377 INFO L470 AbstractCegarLoop]: Abstraction has 2297 states and 6407 transitions. [2022-02-15 12:19:35,378 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) [2022-02-15 12:19:35,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2297 states and 6407 transitions. [2022-02-15 12:19:35,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:19:35,380 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:19:35,380 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] [2022-02-15 12:19:35,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-02-15 12:19:35,581 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 [2022-02-15 12:19:35,581 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:19:35,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:19:35,581 INFO L85 PathProgramCache]: Analyzing trace with hash 719292939, now seen corresponding path program 52 times [2022-02-15 12:19:35,582 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:19:35,582 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551430878] [2022-02-15 12:19:35,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:19:35,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:19:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:19:35,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:35,737 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:19:35,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551430878] [2022-02-15 12:19:35,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551430878] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:19:35,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820598105] [2022-02-15 12:19:35,737 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:19:35,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:19:35,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:19:35,739 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) [2022-02-15 12:19:35,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-02-15 12:19:35,826 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:19:35,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:19:35,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-15 12:19:35,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:19:36,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:36,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:19:36,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:36,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820598105] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:19:36,540 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:19:36,540 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 29 [2022-02-15 12:19:36,540 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529207273] [2022-02-15 12:19:36,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:19:36,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-15 12:19:36,541 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:19:36,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-15 12:19:36,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2022-02-15 12:19:36,541 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) [2022-02-15 12:19:37,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:19:37,968 INFO L93 Difference]: Finished difference Result 3673 states and 9986 transitions. [2022-02-15 12:19:37,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-15 12:19:37,968 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 [2022-02-15 12:19:37,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:19:37,974 INFO L225 Difference]: With dead ends: 3673 [2022-02-15 12:19:37,974 INFO L226 Difference]: Without dead ends: 3514 [2022-02-15 12:19:37,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=621, Invalid=3411, Unknown=0, NotChecked=0, Total=4032 [2022-02-15 12:19:37,975 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 403 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:19:37,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 2049 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:19:37,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3514 states. [2022-02-15 12:19:38,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3514 to 2361. [2022-02-15 12:19:38,004 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) [2022-02-15 12:19:38,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2361 states to 2361 states and 6587 transitions. [2022-02-15 12:19:38,008 INFO L78 Accepts]: Start accepts. Automaton has 2361 states and 6587 transitions. Word has length 70 [2022-02-15 12:19:38,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:19:38,008 INFO L470 AbstractCegarLoop]: Abstraction has 2361 states and 6587 transitions. [2022-02-15 12:19:38,008 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) [2022-02-15 12:19:38,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2361 states and 6587 transitions. [2022-02-15 12:19:38,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:19:38,012 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:19:38,012 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] [2022-02-15 12:19:38,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-02-15 12:19:38,227 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 [2022-02-15 12:19:38,227 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:19:38,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:19:38,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1639889571, now seen corresponding path program 53 times [2022-02-15 12:19:38,228 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:19:38,228 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076953178] [2022-02-15 12:19:38,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:19:38,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:19:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:19:38,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:38,380 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:19:38,380 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076953178] [2022-02-15 12:19:38,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076953178] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:19:38,380 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548403532] [2022-02-15 12:19:38,380 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:19:38,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:19:38,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:19:38,381 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) [2022-02-15 12:19:38,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-02-15 12:19:38,483 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:19:38,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:19:38,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:19:38,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:19:38,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:38,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:19:39,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:39,383 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548403532] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:19:39,383 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:19:39,383 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-02-15 12:19:39,383 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237037100] [2022-02-15 12:19:39,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:19:39,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-15 12:19:39,384 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:19:39,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-15 12:19:39,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1052, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 12:19:39,384 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) [2022-02-15 12:19:41,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:19:41,782 INFO L93 Difference]: Finished difference Result 4433 states and 12291 transitions. [2022-02-15 12:19:41,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-15 12:19:41,783 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 [2022-02-15 12:19:41,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:19:41,789 INFO L225 Difference]: With dead ends: 4433 [2022-02-15 12:19:41,789 INFO L226 Difference]: Without dead ends: 4295 [2022-02-15 12:19:41,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2662 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1255, Invalid=7675, Unknown=0, NotChecked=0, Total=8930 [2022-02-15 12:19:41,790 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 509 mSDsluCounter, 3090 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 3126 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:19:41,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 3126 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:19:41,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4295 states. [2022-02-15 12:19:41,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4295 to 2541. [2022-02-15 12:19:41,821 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) [2022-02-15 12:19:41,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 7122 transitions. [2022-02-15 12:19:41,825 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 7122 transitions. Word has length 70 [2022-02-15 12:19:41,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:19:41,825 INFO L470 AbstractCegarLoop]: Abstraction has 2541 states and 7122 transitions. [2022-02-15 12:19:41,825 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) [2022-02-15 12:19:41,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 7122 transitions. [2022-02-15 12:19:41,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:19:41,828 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:19:41,828 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] [2022-02-15 12:19:41,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-02-15 12:19:42,028 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 [2022-02-15 12:19:42,029 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:19:42,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:19:42,029 INFO L85 PathProgramCache]: Analyzing trace with hash 603585821, now seen corresponding path program 54 times [2022-02-15 12:19:42,029 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:19:42,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34640691] [2022-02-15 12:19:42,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:19:42,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:19:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:19:42,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:42,186 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:19:42,186 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34640691] [2022-02-15 12:19:42,186 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34640691] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:19:42,186 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143926375] [2022-02-15 12:19:42,186 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:19:42,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:19:42,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:19:42,187 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) [2022-02-15 12:19:42,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-02-15 12:19:42,274 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-15 12:19:42,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:19:42,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:19:42,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:19:42,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:42,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:19:43,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:43,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143926375] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:19:43,103 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:19:43,103 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-02-15 12:19:43,103 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899097959] [2022-02-15 12:19:43,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:19:43,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 12:19:43,104 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:19:43,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 12:19:43,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=801, Unknown=0, NotChecked=0, Total=930 [2022-02-15 12:19:43,104 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) [2022-02-15 12:19:47,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:19:47,456 INFO L93 Difference]: Finished difference Result 5151 states and 14441 transitions. [2022-02-15 12:19:47,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-02-15 12:19:47,456 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 [2022-02-15 12:19:47,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:19:47,466 INFO L225 Difference]: With dead ends: 5151 [2022-02-15 12:19:47,466 INFO L226 Difference]: Without dead ends: 5076 [2022-02-15 12:19:47,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6235 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2496, Invalid=14796, Unknown=0, NotChecked=0, Total=17292 [2022-02-15 12:19:47,468 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 694 mSDsluCounter, 2293 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:19:47,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [694 Valid, 2379 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:19:47,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5076 states. [2022-02-15 12:19:47,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5076 to 2677. [2022-02-15 12:19:47,517 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) [2022-02-15 12:19:47,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2677 states to 2677 states and 7568 transitions. [2022-02-15 12:19:47,522 INFO L78 Accepts]: Start accepts. Automaton has 2677 states and 7568 transitions. Word has length 70 [2022-02-15 12:19:47,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:19:47,522 INFO L470 AbstractCegarLoop]: Abstraction has 2677 states and 7568 transitions. [2022-02-15 12:19:47,522 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) [2022-02-15 12:19:47,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2677 states and 7568 transitions. [2022-02-15 12:19:47,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:19:47,526 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:19:47,526 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] [2022-02-15 12:19:47,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-02-15 12:19:47,726 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 [2022-02-15 12:19:47,727 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:19:47,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:19:47,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1601492827, now seen corresponding path program 55 times [2022-02-15 12:19:47,727 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:19:47,727 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128016778] [2022-02-15 12:19:47,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:19:47,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:19:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:19:47,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:47,862 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:19:47,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128016778] [2022-02-15 12:19:47,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128016778] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:19:47,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574998328] [2022-02-15 12:19:47,863 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:19:47,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:19:47,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:19:47,864 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) [2022-02-15 12:19:47,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-02-15 12:19:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:19:47,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:19:47,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:19:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:48,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:19:48,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:48,791 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574998328] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:19:48,791 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:19:48,791 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-02-15 12:19:48,791 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268521486] [2022-02-15 12:19:48,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:19:48,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 12:19:48,791 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:19:48,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 12:19:48,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2022-02-15 12:19:48,792 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) [2022-02-15 12:19:52,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:19:52,039 INFO L93 Difference]: Finished difference Result 5030 states and 14106 transitions. [2022-02-15 12:19:52,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-15 12:19:52,039 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 [2022-02-15 12:19:52,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:19:52,050 INFO L225 Difference]: With dead ends: 5030 [2022-02-15 12:19:52,050 INFO L226 Difference]: Without dead ends: 4941 [2022-02-15 12:19:52,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3617 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1555, Invalid=9575, Unknown=0, NotChecked=0, Total=11130 [2022-02-15 12:19:52,052 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 640 mSDsluCounter, 2460 mSDsCounter, 0 mSdLazyCounter, 1356 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:19:52,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 2529 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1356 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:19:52,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4941 states. [2022-02-15 12:19:52,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4941 to 3061. [2022-02-15 12:19:52,105 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) [2022-02-15 12:19:52,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3061 states to 3061 states and 8784 transitions. [2022-02-15 12:19:52,111 INFO L78 Accepts]: Start accepts. Automaton has 3061 states and 8784 transitions. Word has length 70 [2022-02-15 12:19:52,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:19:52,111 INFO L470 AbstractCegarLoop]: Abstraction has 3061 states and 8784 transitions. [2022-02-15 12:19:52,111 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) [2022-02-15 12:19:52,111 INFO L276 IsEmpty]: Start isEmpty. Operand 3061 states and 8784 transitions. [2022-02-15 12:19:52,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:19:52,115 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:19:52,115 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] [2022-02-15 12:19:52,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-02-15 12:19:52,316 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 [2022-02-15 12:19:52,316 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:19:52,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:19:52,316 INFO L85 PathProgramCache]: Analyzing trace with hash 541641107, now seen corresponding path program 56 times [2022-02-15 12:19:52,316 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:19:52,316 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058009112] [2022-02-15 12:19:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:19:52,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:19:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:19:52,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:52,476 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:19:52,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058009112] [2022-02-15 12:19:52,476 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058009112] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:19:52,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976137528] [2022-02-15 12:19:52,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:19:52,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:19:52,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:19:52,477 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) [2022-02-15 12:19:52,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-02-15 12:19:52,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:19:52,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:19:52,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:19:52,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:19:52,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:52,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:19:53,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:53,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976137528] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:19:53,549 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:19:53,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-02-15 12:19:53,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121684504] [2022-02-15 12:19:53,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:19:53,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 12:19:53,550 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:19:53,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 12:19:53,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2022-02-15 12:19:53,550 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) [2022-02-15 12:19:59,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:19:59,528 INFO L93 Difference]: Finished difference Result 5152 states and 14487 transitions. [2022-02-15 12:19:59,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-02-15 12:19:59,528 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 [2022-02-15 12:19:59,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:19:59,536 INFO L225 Difference]: With dead ends: 5152 [2022-02-15 12:19:59,536 INFO L226 Difference]: Without dead ends: 5077 [2022-02-15 12:19:59,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8367 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=3445, Invalid=19205, Unknown=0, NotChecked=0, Total=22650 [2022-02-15 12:19:59,538 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 687 mSDsluCounter, 2536 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:19:59,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 2605 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:19:59,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5077 states. [2022-02-15 12:19:59,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5077 to 3069. [2022-02-15 12:19:59,579 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) [2022-02-15 12:19:59,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3069 states to 3069 states and 8810 transitions. [2022-02-15 12:19:59,583 INFO L78 Accepts]: Start accepts. Automaton has 3069 states and 8810 transitions. Word has length 70 [2022-02-15 12:19:59,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:19:59,584 INFO L470 AbstractCegarLoop]: Abstraction has 3069 states and 8810 transitions. [2022-02-15 12:19:59,584 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) [2022-02-15 12:19:59,584 INFO L276 IsEmpty]: Start isEmpty. Operand 3069 states and 8810 transitions. [2022-02-15 12:19:59,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:19:59,587 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:19:59,587 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] [2022-02-15 12:19:59,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-02-15 12:19:59,787 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 [2022-02-15 12:19:59,787 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:19:59,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:19:59,788 INFO L85 PathProgramCache]: Analyzing trace with hash -494662643, now seen corresponding path program 57 times [2022-02-15 12:19:59,788 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:19:59,788 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137424119] [2022-02-15 12:19:59,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:19:59,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:19:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:19:59,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:19:59,919 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:19:59,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137424119] [2022-02-15 12:19:59,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137424119] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:19:59,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116999396] [2022-02-15 12:19:59,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:19:59,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:19:59,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:19:59,920 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) [2022-02-15 12:19:59,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-02-15 12:20:00,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-15 12:20:00,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:20:00,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:20:00,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:20:00,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:00,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:20:00,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:00,871 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116999396] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:20:00,871 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:20:00,871 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-02-15 12:20:00,871 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205629636] [2022-02-15 12:20:00,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:20:00,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 12:20:00,871 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:20:00,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 12:20:00,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=813, Unknown=0, NotChecked=0, Total=930 [2022-02-15 12:20:00,872 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) [2022-02-15 12:20:08,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:20:08,103 INFO L93 Difference]: Finished difference Result 5557 states and 15617 transitions. [2022-02-15 12:20:08,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-02-15 12:20:08,103 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 [2022-02-15 12:20:08,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:20:08,112 INFO L225 Difference]: With dead ends: 5557 [2022-02-15 12:20:08,113 INFO L226 Difference]: Without dead ends: 5482 [2022-02-15 12:20:08,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11280 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=4217, Invalid=25195, Unknown=0, NotChecked=0, Total=29412 [2022-02-15 12:20:08,114 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 869 mSDsluCounter, 2868 mSDsCounter, 0 mSdLazyCounter, 1656 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 2941 SdHoareTripleChecker+Invalid, 1820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:20:08,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 2941 Invalid, 1820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1656 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:20:08,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5482 states. [2022-02-15 12:20:08,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5482 to 3109. [2022-02-15 12:20:08,167 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) [2022-02-15 12:20:08,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 8932 transitions. [2022-02-15 12:20:08,173 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 8932 transitions. Word has length 70 [2022-02-15 12:20:08,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:20:08,173 INFO L470 AbstractCegarLoop]: Abstraction has 3109 states and 8932 transitions. [2022-02-15 12:20:08,173 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) [2022-02-15 12:20:08,173 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 8932 transitions. [2022-02-15 12:20:08,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:20:08,178 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:20:08,178 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] [2022-02-15 12:20:08,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-02-15 12:20:08,378 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 [2022-02-15 12:20:08,379 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:20:08,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:20:08,379 INFO L85 PathProgramCache]: Analyzing trace with hash 503244363, now seen corresponding path program 58 times [2022-02-15 12:20:08,379 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:20:08,379 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750499249] [2022-02-15 12:20:08,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:20:08,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:20:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:20:08,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:08,536 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:20:08,536 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750499249] [2022-02-15 12:20:08,536 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750499249] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:20:08,536 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85572610] [2022-02-15 12:20:08,536 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:20:08,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:20:08,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:20:08,540 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) [2022-02-15 12:20:08,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-02-15 12:20:08,640 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:20:08,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:20:08,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-15 12:20:08,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:20:08,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:08,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:20:09,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:09,389 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85572610] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:20:09,389 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:20:09,389 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 29 [2022-02-15 12:20:09,389 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81159927] [2022-02-15 12:20:09,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:20:09,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-15 12:20:09,390 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:20:09,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-15 12:20:09,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2022-02-15 12:20:09,390 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) [2022-02-15 12:20:13,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:20:13,042 INFO L93 Difference]: Finished difference Result 6141 states and 17233 transitions. [2022-02-15 12:20:13,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-02-15 12:20:13,042 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 [2022-02-15 12:20:13,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:20:13,053 INFO L225 Difference]: With dead ends: 6141 [2022-02-15 12:20:13,053 INFO L226 Difference]: Without dead ends: 6011 [2022-02-15 12:20:13,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6530 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2733, Invalid=15357, Unknown=0, NotChecked=0, Total=18090 [2022-02-15 12:20:13,055 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 780 mSDsluCounter, 2277 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 2365 SdHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:20:13,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [780 Valid, 2365 Invalid, 1537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:20:13,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2022-02-15 12:20:13,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 3721. [2022-02-15 12:20:13,108 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) [2022-02-15 12:20:13,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3721 states to 3721 states and 10831 transitions. [2022-02-15 12:20:13,119 INFO L78 Accepts]: Start accepts. Automaton has 3721 states and 10831 transitions. Word has length 70 [2022-02-15 12:20:13,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:20:13,119 INFO L470 AbstractCegarLoop]: Abstraction has 3721 states and 10831 transitions. [2022-02-15 12:20:13,119 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) [2022-02-15 12:20:13,119 INFO L276 IsEmpty]: Start isEmpty. Operand 3721 states and 10831 transitions. [2022-02-15 12:20:13,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:20:13,125 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:20:13,126 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] [2022-02-15 12:20:13,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-02-15 12:20:13,349 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 [2022-02-15 12:20:13,349 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:20:13,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:20:13,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1460351023, now seen corresponding path program 59 times [2022-02-15 12:20:13,349 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:20:13,349 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044594766] [2022-02-15 12:20:13,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:20:13,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:20:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:20:13,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:13,494 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:20:13,494 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044594766] [2022-02-15 12:20:13,495 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044594766] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:20:13,495 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123063976] [2022-02-15 12:20:13,495 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:20:13,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:20:13,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:20:13,496 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) [2022-02-15 12:20:13,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-02-15 12:20:13,578 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:20:13,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:20:13,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:20:13,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:20:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:13,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:20:14,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:14,250 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123063976] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:20:14,250 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:20:14,250 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:20:14,250 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139359295] [2022-02-15 12:20:14,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:20:14,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:20:14,251 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:20:14,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:20:14,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:20:14,251 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) [2022-02-15 12:20:16,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:20:16,758 INFO L93 Difference]: Finished difference Result 5228 states and 15055 transitions. [2022-02-15 12:20:16,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-02-15 12:20:16,758 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 [2022-02-15 12:20:16,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:20:16,770 INFO L225 Difference]: With dead ends: 5228 [2022-02-15 12:20:16,770 INFO L226 Difference]: Without dead ends: 5121 [2022-02-15 12:20:16,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6140 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2789, Invalid=15033, Unknown=0, NotChecked=0, Total=17822 [2022-02-15 12:20:16,773 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 777 mSDsluCounter, 2696 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 2764 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:20:16,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [777 Valid, 2764 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:20:16,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5121 states. [2022-02-15 12:20:16,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5121 to 3585. [2022-02-15 12:20:16,849 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) [2022-02-15 12:20:16,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 10445 transitions. [2022-02-15 12:20:16,856 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 10445 transitions. Word has length 70 [2022-02-15 12:20:16,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:20:16,857 INFO L470 AbstractCegarLoop]: Abstraction has 3585 states and 10445 transitions. [2022-02-15 12:20:16,857 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) [2022-02-15 12:20:16,857 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 10445 transitions. [2022-02-15 12:20:16,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:20:16,862 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:20:16,862 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] [2022-02-15 12:20:16,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-02-15 12:20:17,062 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 [2022-02-15 12:20:17,063 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:20:17,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:20:17,064 INFO L85 PathProgramCache]: Analyzing trace with hash -462444017, now seen corresponding path program 60 times [2022-02-15 12:20:17,064 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:20:17,064 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463582444] [2022-02-15 12:20:17,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:20:17,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:20:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:20:17,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:17,218 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:20:17,218 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463582444] [2022-02-15 12:20:17,218 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463582444] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:20:17,218 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758564886] [2022-02-15 12:20:17,218 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:20:17,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:20:17,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:20:17,220 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) [2022-02-15 12:20:17,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-02-15 12:20:17,332 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-15 12:20:17,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:20:17,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:20:17,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:20:17,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:17,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:20:18,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:18,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758564886] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:20:18,179 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:20:18,179 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-02-15 12:20:18,179 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920138916] [2022-02-15 12:20:18,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:20:18,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 12:20:18,180 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:20:18,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 12:20:18,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2022-02-15 12:20:18,180 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) [2022-02-15 12:20:25,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:20:25,262 INFO L93 Difference]: Finished difference Result 7128 states and 20475 transitions. [2022-02-15 12:20:25,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-02-15 12:20:25,263 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 [2022-02-15 12:20:25,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:20:25,275 INFO L225 Difference]: With dead ends: 7128 [2022-02-15 12:20:25,275 INFO L226 Difference]: Without dead ends: 7039 [2022-02-15 12:20:25,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11748 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=4597, Invalid=26203, Unknown=0, NotChecked=0, Total=30800 [2022-02-15 12:20:25,277 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 892 mSDsluCounter, 3096 mSDsCounter, 0 mSdLazyCounter, 1812 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 3164 SdHoareTripleChecker+Invalid, 2012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 12:20:25,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 3164 Invalid, 2012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1812 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 12:20:25,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7039 states. [2022-02-15 12:20:25,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7039 to 4073. [2022-02-15 12:20:25,346 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) [2022-02-15 12:20:25,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4073 states to 4073 states and 12019 transitions. [2022-02-15 12:20:25,354 INFO L78 Accepts]: Start accepts. Automaton has 4073 states and 12019 transitions. Word has length 70 [2022-02-15 12:20:25,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:20:25,354 INFO L470 AbstractCegarLoop]: Abstraction has 4073 states and 12019 transitions. [2022-02-15 12:20:25,354 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) [2022-02-15 12:20:25,354 INFO L276 IsEmpty]: Start isEmpty. Operand 4073 states and 12019 transitions. [2022-02-15 12:20:25,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:20:25,360 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:20:25,360 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] [2022-02-15 12:20:25,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-02-15 12:20:25,561 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 [2022-02-15 12:20:25,561 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:20:25,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:20:25,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1519589779, now seen corresponding path program 61 times [2022-02-15 12:20:25,561 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:20:25,561 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472392983] [2022-02-15 12:20:25,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:20:25,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:20:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:20:25,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:25,692 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:20:25,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472392983] [2022-02-15 12:20:25,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472392983] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:20:25,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186292152] [2022-02-15 12:20:25,692 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:20:25,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:20:25,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:20:25,693 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) [2022-02-15 12:20:25,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-02-15 12:20:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:20:25,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:20:25,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:20:26,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:26,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:20:26,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:26,696 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186292152] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:20:26,696 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:20:26,696 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-02-15 12:20:26,696 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582679104] [2022-02-15 12:20:26,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:20:26,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 12:20:26,696 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:20:26,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 12:20:26,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2022-02-15 12:20:26,697 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) [2022-02-15 12:20:33,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:20:33,233 INFO L93 Difference]: Finished difference Result 7825 states and 22614 transitions. [2022-02-15 12:20:33,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-02-15 12:20:33,233 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 [2022-02-15 12:20:33,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:20:33,248 INFO L225 Difference]: With dead ends: 7825 [2022-02-15 12:20:33,249 INFO L226 Difference]: Without dead ends: 7649 [2022-02-15 12:20:33,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10620 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=4477, Invalid=22255, Unknown=0, NotChecked=0, Total=26732 [2022-02-15 12:20:33,251 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 1079 mSDsluCounter, 2574 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 2645 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:20:33,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1079 Valid, 2645 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1491 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:20:33,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7649 states. [2022-02-15 12:20:33,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7649 to 4581. [2022-02-15 12:20:33,353 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) [2022-02-15 12:20:33,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4581 states to 4581 states and 13704 transitions. [2022-02-15 12:20:33,362 INFO L78 Accepts]: Start accepts. Automaton has 4581 states and 13704 transitions. Word has length 70 [2022-02-15 12:20:33,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:20:33,362 INFO L470 AbstractCegarLoop]: Abstraction has 4581 states and 13704 transitions. [2022-02-15 12:20:33,362 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) [2022-02-15 12:20:33,362 INFO L276 IsEmpty]: Start isEmpty. Operand 4581 states and 13704 transitions. [2022-02-15 12:20:33,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:20:33,368 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:20:33,368 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] [2022-02-15 12:20:33,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-02-15 12:20:33,568 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 [2022-02-15 12:20:33,569 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:20:33,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:20:33,569 INFO L85 PathProgramCache]: Analyzing trace with hash -570575051, now seen corresponding path program 62 times [2022-02-15 12:20:33,569 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:20:33,570 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010217982] [2022-02-15 12:20:33,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:20:33,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:20:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:20:33,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:33,718 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:20:33,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010217982] [2022-02-15 12:20:33,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010217982] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:20:33,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879924315] [2022-02-15 12:20:33,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:20:33,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:20:33,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:20:33,719 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) [2022-02-15 12:20:33,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-02-15 12:20:33,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:20:33,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:20:33,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:20:33,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:20:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:34,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:20:34,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:34,626 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879924315] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:20:34,627 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:20:34,627 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 29 [2022-02-15 12:20:34,627 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288945214] [2022-02-15 12:20:34,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:20:34,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-15 12:20:34,627 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:20:34,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-15 12:20:34,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=707, Unknown=0, NotChecked=0, Total=812 [2022-02-15 12:20:34,627 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) [2022-02-15 12:20:36,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:20:36,946 INFO L93 Difference]: Finished difference Result 5971 states and 17267 transitions. [2022-02-15 12:20:36,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-15 12:20:36,946 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 [2022-02-15 12:20:36,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:20:36,956 INFO L225 Difference]: With dead ends: 5971 [2022-02-15 12:20:36,956 INFO L226 Difference]: Without dead ends: 5812 [2022-02-15 12:20:36,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2147 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=925, Invalid=6385, Unknown=0, NotChecked=0, Total=7310 [2022-02-15 12:20:36,957 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 698 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 2256 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:20:36,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [698 Valid, 2256 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:20:36,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2022-02-15 12:20:37,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 4725. [2022-02-15 12:20:37,038 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) [2022-02-15 12:20:37,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4725 states to 4725 states and 14116 transitions. [2022-02-15 12:20:37,047 INFO L78 Accepts]: Start accepts. Automaton has 4725 states and 14116 transitions. Word has length 70 [2022-02-15 12:20:37,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:20:37,047 INFO L470 AbstractCegarLoop]: Abstraction has 4725 states and 14116 transitions. [2022-02-15 12:20:37,047 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) [2022-02-15 12:20:37,047 INFO L276 IsEmpty]: Start isEmpty. Operand 4725 states and 14116 transitions. [2022-02-15 12:20:37,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:20:37,053 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:20:37,053 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] [2022-02-15 12:20:37,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-02-15 12:20:37,254 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 [2022-02-15 12:20:37,254 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:20:37,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:20:37,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1033019655, now seen corresponding path program 63 times [2022-02-15 12:20:37,255 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:20:37,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096193084] [2022-02-15 12:20:37,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:20:37,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:20:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:20:37,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:37,383 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:20:37,383 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096193084] [2022-02-15 12:20:37,383 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096193084] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:20:37,383 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500812703] [2022-02-15 12:20:37,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:20:37,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:20:37,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:20:37,385 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) [2022-02-15 12:20:37,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-02-15 12:20:37,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-15 12:20:37,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:20:37,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:20:37,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:20:37,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:37,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:20:38,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:38,401 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500812703] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:20:38,401 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:20:38,401 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 30 [2022-02-15 12:20:38,401 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264882165] [2022-02-15 12:20:38,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:20:38,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-15 12:20:38,401 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:20:38,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-15 12:20:38,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2022-02-15 12:20:38,402 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) [2022-02-15 12:20:41,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:20:41,072 INFO L93 Difference]: Finished difference Result 5987 states and 17326 transitions. [2022-02-15 12:20:41,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-15 12:20:41,072 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 [2022-02-15 12:20:41,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:20:41,083 INFO L225 Difference]: With dead ends: 5987 [2022-02-15 12:20:41,084 INFO L226 Difference]: Without dead ends: 5789 [2022-02-15 12:20:41,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 121 SyntacticMatches, 5 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2878 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1147, Invalid=7783, Unknown=0, NotChecked=0, Total=8930 [2022-02-15 12:20:41,085 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 595 mSDsluCounter, 2741 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:20:41,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 2788 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:20:41,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5789 states. [2022-02-15 12:20:41,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5789 to 4749. [2022-02-15 12:20:41,169 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) [2022-02-15 12:20:41,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4749 states to 4749 states and 14182 transitions. [2022-02-15 12:20:41,240 INFO L78 Accepts]: Start accepts. Automaton has 4749 states and 14182 transitions. Word has length 70 [2022-02-15 12:20:41,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:20:41,240 INFO L470 AbstractCegarLoop]: Abstraction has 4749 states and 14182 transitions. [2022-02-15 12:20:41,240 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) [2022-02-15 12:20:41,240 INFO L276 IsEmpty]: Start isEmpty. Operand 4749 states and 14182 transitions. [2022-02-15 12:20:41,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:20:41,249 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:20:41,249 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] [2022-02-15 12:20:41,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-02-15 12:20:41,467 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 [2022-02-15 12:20:41,467 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:20:41,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:20:41,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1148726773, now seen corresponding path program 64 times [2022-02-15 12:20:41,468 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:20:41,468 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680575946] [2022-02-15 12:20:41,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:20:41,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:20:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:20:41,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:41,597 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:20:41,597 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680575946] [2022-02-15 12:20:41,598 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680575946] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:20:41,598 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252179775] [2022-02-15 12:20:41,598 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:20:41,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:20:41,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:20:41,599 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) [2022-02-15 12:20:41,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-02-15 12:20:41,683 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:20:41,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:20:41,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-15 12:20:41,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:20:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:41,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:20:42,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:42,345 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252179775] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:20:42,345 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:20:42,345 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 28 [2022-02-15 12:20:42,345 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7480952] [2022-02-15 12:20:42,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:20:42,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-15 12:20:42,346 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:20:42,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-15 12:20:42,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2022-02-15 12:20:42,346 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) [2022-02-15 12:20:43,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:20:43,454 INFO L93 Difference]: Finished difference Result 5657 states and 16347 transitions. [2022-02-15 12:20:43,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 12:20:43,455 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 [2022-02-15 12:20:43,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:20:43,463 INFO L225 Difference]: With dead ends: 5657 [2022-02-15 12:20:43,463 INFO L226 Difference]: Without dead ends: 5558 [2022-02-15 12:20:43,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 123 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=562, Invalid=2518, Unknown=0, NotChecked=0, Total=3080 [2022-02-15 12:20:43,464 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 573 mSDsluCounter, 1878 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 12:20:43,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 1935 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 12:20:43,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5558 states. [2022-02-15 12:20:43,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5558 to 4749. [2022-02-15 12:20:43,524 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) [2022-02-15 12:20:43,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4749 states to 4749 states and 14170 transitions. [2022-02-15 12:20:43,532 INFO L78 Accepts]: Start accepts. Automaton has 4749 states and 14170 transitions. Word has length 70 [2022-02-15 12:20:43,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:20:43,533 INFO L470 AbstractCegarLoop]: Abstraction has 4749 states and 14170 transitions. [2022-02-15 12:20:43,533 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) [2022-02-15 12:20:43,533 INFO L276 IsEmpty]: Start isEmpty. Operand 4749 states and 14170 transitions. [2022-02-15 12:20:43,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:20:43,539 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:20:43,539 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] [2022-02-15 12:20:43,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-02-15 12:20:43,739 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 [2022-02-15 12:20:43,740 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:20:43,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:20:43,740 INFO L85 PathProgramCache]: Analyzing trace with hash -150819767, now seen corresponding path program 65 times [2022-02-15 12:20:43,740 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:20:43,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415974798] [2022-02-15 12:20:43,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:20:43,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:20:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:20:43,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:43,879 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:20:43,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415974798] [2022-02-15 12:20:43,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415974798] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:20:43,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128940423] [2022-02-15 12:20:43,879 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:20:43,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:20:43,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:20:43,881 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) [2022-02-15 12:20:43,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-02-15 12:20:43,967 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:20:43,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:20:43,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:20:43,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:20:44,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:44,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 12:20:44,298 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128940423] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:20:44,298 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 12:20:44,298 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 25 [2022-02-15 12:20:44,298 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242368249] [2022-02-15 12:20:44,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:20:44,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 12:20:44,298 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:20:44,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 12:20:44,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2022-02-15 12:20:44,299 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) [2022-02-15 12:20:44,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:20:44,477 INFO L93 Difference]: Finished difference Result 4859 states and 14422 transitions. [2022-02-15 12:20:44,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 12:20:44,477 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 [2022-02-15 12:20:44,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:20:44,485 INFO L225 Difference]: With dead ends: 4859 [2022-02-15 12:20:44,486 INFO L226 Difference]: Without dead ends: 4781 [2022-02-15 12:20:44,486 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 [2022-02-15 12:20:44,486 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 119 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:20:44,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 948 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:20:44,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4781 states. [2022-02-15 12:20:44,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4781 to 4713. [2022-02-15 12:20:44,541 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) [2022-02-15 12:20:44,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4713 states to 4713 states and 14083 transitions. [2022-02-15 12:20:44,550 INFO L78 Accepts]: Start accepts. Automaton has 4713 states and 14083 transitions. Word has length 70 [2022-02-15 12:20:44,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:20:44,551 INFO L470 AbstractCegarLoop]: Abstraction has 4713 states and 14083 transitions. [2022-02-15 12:20:44,551 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) [2022-02-15 12:20:44,551 INFO L276 IsEmpty]: Start isEmpty. Operand 4713 states and 14083 transitions. [2022-02-15 12:20:44,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:20:44,556 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:20:44,556 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] [2022-02-15 12:20:44,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-02-15 12:20:44,766 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 [2022-02-15 12:20:44,766 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:20:44,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:20:44,767 INFO L85 PathProgramCache]: Analyzing trace with hash 2046055433, now seen corresponding path program 66 times [2022-02-15 12:20:44,767 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:20:44,767 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420560532] [2022-02-15 12:20:44,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:20:44,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:20:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:20:44,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:44,897 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:20:44,898 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420560532] [2022-02-15 12:20:44,898 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420560532] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:20:44,898 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13790636] [2022-02-15 12:20:44,898 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:20:44,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:20:44,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:20:44,899 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) [2022-02-15 12:20:44,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-02-15 12:20:44,990 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-15 12:20:44,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:20:44,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:20:44,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:20:45,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:45,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:20:45,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:45,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13790636] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:20:45,854 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:20:45,854 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2022-02-15 12:20:45,854 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764719820] [2022-02-15 12:20:45,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:20:45,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 12:20:45,854 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:20:45,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 12:20:45,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2022-02-15 12:20:45,855 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) [2022-02-15 12:20:49,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:20:49,234 INFO L93 Difference]: Finished difference Result 7586 states and 22120 transitions. [2022-02-15 12:20:49,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-15 12:20:49,235 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 [2022-02-15 12:20:49,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:20:49,247 INFO L225 Difference]: With dead ends: 7586 [2022-02-15 12:20:49,248 INFO L226 Difference]: Without dead ends: 7511 [2022-02-15 12:20:49,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3698 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1697, Invalid=9223, Unknown=0, NotChecked=0, Total=10920 [2022-02-15 12:20:49,249 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 512 mSDsluCounter, 2763 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:20:49,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 2776 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:20:49,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7511 states. [2022-02-15 12:20:49,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7511 to 4793. [2022-02-15 12:20:49,311 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) [2022-02-15 12:20:49,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4793 states to 4793 states and 14319 transitions. [2022-02-15 12:20:49,319 INFO L78 Accepts]: Start accepts. Automaton has 4793 states and 14319 transitions. Word has length 70 [2022-02-15 12:20:49,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:20:49,319 INFO L470 AbstractCegarLoop]: Abstraction has 4793 states and 14319 transitions. [2022-02-15 12:20:49,319 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) [2022-02-15 12:20:49,319 INFO L276 IsEmpty]: Start isEmpty. Operand 4793 states and 14319 transitions. [2022-02-15 12:20:49,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:20:49,325 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:20:49,325 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] [2022-02-15 12:20:49,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-02-15 12:20:49,525 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 [2022-02-15 12:20:49,525 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:20:49,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:20:49,525 INFO L85 PathProgramCache]: Analyzing trace with hash 461084739, now seen corresponding path program 67 times [2022-02-15 12:20:49,525 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:20:49,525 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429462446] [2022-02-15 12:20:49,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:20:49,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:20:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:20:49,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:49,662 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:20:49,662 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429462446] [2022-02-15 12:20:49,662 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429462446] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:20:49,662 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464258047] [2022-02-15 12:20:49,662 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:20:49,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:20:49,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:20:49,663 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) [2022-02-15 12:20:49,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-02-15 12:20:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:20:49,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:20:49,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:20:50,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:50,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:20:50,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:50,596 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464258047] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:20:50,596 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:20:50,596 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2022-02-15 12:20:50,596 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443989905] [2022-02-15 12:20:50,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:20:50,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 12:20:50,596 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:20:50,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 12:20:50,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2022-02-15 12:20:50,597 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) [2022-02-15 12:20:54,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:20:54,095 INFO L93 Difference]: Finished difference Result 7564 states and 22088 transitions. [2022-02-15 12:20:54,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-15 12:20:54,095 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 [2022-02-15 12:20:54,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:20:54,108 INFO L225 Difference]: With dead ends: 7564 [2022-02-15 12:20:54,108 INFO L226 Difference]: Without dead ends: 7475 [2022-02-15 12:20:54,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3759 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1701, Invalid=9429, Unknown=0, NotChecked=0, Total=11130 [2022-02-15 12:20:54,109 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 494 mSDsluCounter, 3645 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 3608 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:20:54,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [494 Valid, 3608 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:20:54,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7475 states. [2022-02-15 12:20:54,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7475 to 4857. [2022-02-15 12:20:54,189 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) [2022-02-15 12:20:54,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4857 states to 4857 states and 14499 transitions. [2022-02-15 12:20:54,198 INFO L78 Accepts]: Start accepts. Automaton has 4857 states and 14499 transitions. Word has length 70 [2022-02-15 12:20:54,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:20:54,198 INFO L470 AbstractCegarLoop]: Abstraction has 4857 states and 14499 transitions. [2022-02-15 12:20:54,199 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) [2022-02-15 12:20:54,199 INFO L276 IsEmpty]: Start isEmpty. Operand 4857 states and 14499 transitions. [2022-02-15 12:20:54,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:20:54,205 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:20:54,205 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] [2022-02-15 12:20:54,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-02-15 12:20:54,406 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 [2022-02-15 12:20:54,407 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:20:54,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:20:54,407 INFO L85 PathProgramCache]: Analyzing trace with hash -825524207, now seen corresponding path program 68 times [2022-02-15 12:20:54,407 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:20:54,407 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015595587] [2022-02-15 12:20:54,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:20:54,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:20:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:20:54,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:54,539 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:20:54,539 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015595587] [2022-02-15 12:20:54,539 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015595587] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:20:54,539 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972189576] [2022-02-15 12:20:54,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:20:54,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:20:54,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:20:54,540 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) [2022-02-15 12:20:54,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-02-15 12:20:54,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:20:54,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:20:54,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:20:54,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:20:54,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:54,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:20:55,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:20:55,493 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972189576] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:20:55,493 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:20:55,493 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2022-02-15 12:20:55,493 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621355171] [2022-02-15 12:20:55,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:20:55,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 12:20:55,493 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:20:55,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 12:20:55,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2022-02-15 12:20:55,494 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) [2022-02-15 12:20:59,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:20:59,894 INFO L93 Difference]: Finished difference Result 8098 states and 23481 transitions. [2022-02-15 12:20:59,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-02-15 12:20:59,894 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 [2022-02-15 12:20:59,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:20:59,909 INFO L225 Difference]: With dead ends: 8098 [2022-02-15 12:20:59,909 INFO L226 Difference]: Without dead ends: 7875 [2022-02-15 12:20:59,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6149 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2252, Invalid=14778, Unknown=0, NotChecked=0, Total=17030 [2022-02-15 12:20:59,911 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 710 mSDsluCounter, 2733 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:20:59,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 2759 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:20:59,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7875 states. [2022-02-15 12:20:59,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7875 to 4957. [2022-02-15 12:20:59,996 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) [2022-02-15 12:21:00,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4957 states to 4957 states and 14802 transitions. [2022-02-15 12:21:00,007 INFO L78 Accepts]: Start accepts. Automaton has 4957 states and 14802 transitions. Word has length 70 [2022-02-15 12:21:00,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:21:00,007 INFO L470 AbstractCegarLoop]: Abstraction has 4957 states and 14802 transitions. [2022-02-15 12:21:00,008 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) [2022-02-15 12:21:00,008 INFO L276 IsEmpty]: Start isEmpty. Operand 4957 states and 14802 transitions. [2022-02-15 12:21:00,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:21:00,036 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:21:00,036 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] [2022-02-15 12:21:00,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-02-15 12:21:00,237 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 [2022-02-15 12:21:00,237 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:21:00,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:21:00,237 INFO L85 PathProgramCache]: Analyzing trace with hash 2090402133, now seen corresponding path program 69 times [2022-02-15 12:21:00,237 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:21:00,238 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292849563] [2022-02-15 12:21:00,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:21:00,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:21:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:21:00,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:00,386 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:21:00,386 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292849563] [2022-02-15 12:21:00,386 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292849563] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:21:00,386 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675237981] [2022-02-15 12:21:00,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:21:00,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:21:00,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:21:00,388 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) [2022-02-15 12:21:00,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-02-15 12:21:00,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-15 12:21:00,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:21:00,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:21:00,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:21:00,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:00,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:21:01,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:01,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675237981] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:21:01,352 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:21:01,352 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-02-15 12:21:01,352 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125777404] [2022-02-15 12:21:01,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:21:01,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-15 12:21:01,353 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:21:01,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-15 12:21:01,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1060, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 12:21:01,353 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) [2022-02-15 12:21:03,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:21:03,799 INFO L93 Difference]: Finished difference Result 7085 states and 20759 transitions. [2022-02-15 12:21:03,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-15 12:21:03,799 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 [2022-02-15 12:21:03,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:21:03,810 INFO L225 Difference]: With dead ends: 7085 [2022-02-15 12:21:03,810 INFO L226 Difference]: Without dead ends: 6906 [2022-02-15 12:21:03,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2716 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1168, Invalid=7762, Unknown=0, NotChecked=0, Total=8930 [2022-02-15 12:21:03,811 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 498 mSDsluCounter, 2929 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 2950 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:21:03,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 2950 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:21:03,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6906 states. [2022-02-15 12:21:03,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6906 to 5181. [2022-02-15 12:21:03,874 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) [2022-02-15 12:21:03,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5181 states to 5181 states and 15446 transitions. [2022-02-15 12:21:03,883 INFO L78 Accepts]: Start accepts. Automaton has 5181 states and 15446 transitions. Word has length 70 [2022-02-15 12:21:03,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:21:03,883 INFO L470 AbstractCegarLoop]: Abstraction has 5181 states and 15446 transitions. [2022-02-15 12:21:03,883 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) [2022-02-15 12:21:03,883 INFO L276 IsEmpty]: Start isEmpty. Operand 5181 states and 15446 transitions. [2022-02-15 12:21:03,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:21:03,889 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:21:03,889 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] [2022-02-15 12:21:03,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-02-15 12:21:04,089 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 [2022-02-15 12:21:04,090 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:21:04,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:21:04,090 INFO L85 PathProgramCache]: Analyzing trace with hash 947581475, now seen corresponding path program 70 times [2022-02-15 12:21:04,090 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:21:04,090 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439222259] [2022-02-15 12:21:04,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:21:04,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:21:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:21:04,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:04,217 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:21:04,217 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439222259] [2022-02-15 12:21:04,218 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439222259] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:21:04,218 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775763447] [2022-02-15 12:21:04,218 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:21:04,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:21:04,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:21:04,219 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) [2022-02-15 12:21:04,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-02-15 12:21:04,307 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:21:04,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:21:04,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-15 12:21:04,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:21:04,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:04,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:21:05,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:05,028 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775763447] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:21:05,028 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:21:05,028 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:21:05,028 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867267816] [2022-02-15 12:21:05,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:21:05,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:21:05,029 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:21:05,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:21:05,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:21:05,029 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) [2022-02-15 12:21:07,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:21:07,697 INFO L93 Difference]: Finished difference Result 7732 states and 22695 transitions. [2022-02-15 12:21:07,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-15 12:21:07,697 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 [2022-02-15 12:21:07,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:21:07,710 INFO L225 Difference]: With dead ends: 7732 [2022-02-15 12:21:07,710 INFO L226 Difference]: Without dead ends: 7605 [2022-02-15 12:21:07,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4169 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1641, Invalid=10569, Unknown=0, NotChecked=0, Total=12210 [2022-02-15 12:21:07,712 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 681 mSDsluCounter, 3030 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 1908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:21:07,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 3064 Invalid, 1908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1763 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:21:07,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7605 states. [2022-02-15 12:21:07,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7605 to 5229. [2022-02-15 12:21:07,806 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) [2022-02-15 12:21:07,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5229 states to 5229 states and 15590 transitions. [2022-02-15 12:21:07,815 INFO L78 Accepts]: Start accepts. Automaton has 5229 states and 15590 transitions. Word has length 70 [2022-02-15 12:21:07,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:21:07,815 INFO L470 AbstractCegarLoop]: Abstraction has 5229 states and 15590 transitions. [2022-02-15 12:21:07,816 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) [2022-02-15 12:21:07,816 INFO L276 IsEmpty]: Start isEmpty. Operand 5229 states and 15590 transitions. [2022-02-15 12:21:07,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:21:07,822 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:21:07,822 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] [2022-02-15 12:21:07,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-02-15 12:21:08,024 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 [2022-02-15 12:21:08,024 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:21:08,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:21:08,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1340787411, now seen corresponding path program 71 times [2022-02-15 12:21:08,024 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:21:08,024 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353269455] [2022-02-15 12:21:08,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:21:08,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:21:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:21:08,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:08,165 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:21:08,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353269455] [2022-02-15 12:21:08,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353269455] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:21:08,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023135391] [2022-02-15 12:21:08,165 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:21:08,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:21:08,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:21:08,166 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) [2022-02-15 12:21:08,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-02-15 12:21:08,256 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 12:21:08,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:21:08,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:21:08,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:21:08,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:08,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:21:08,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:08,965 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023135391] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:21:08,965 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:21:08,965 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:21:08,965 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233504429] [2022-02-15 12:21:08,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:21:08,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:21:08,965 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:21:08,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:21:08,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:21:08,966 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) [2022-02-15 12:21:09,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:21:09,918 INFO L93 Difference]: Finished difference Result 7120 states and 21026 transitions. [2022-02-15 12:21:09,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-15 12:21:09,918 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 [2022-02-15 12:21:09,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:21:09,930 INFO L225 Difference]: With dead ends: 7120 [2022-02-15 12:21:09,930 INFO L226 Difference]: Without dead ends: 7057 [2022-02-15 12:21:09,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1043 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=582, Invalid=3324, Unknown=0, NotChecked=0, Total=3906 [2022-02-15 12:21:09,931 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 310 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:21:09,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 2548 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:21:09,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7057 states. [2022-02-15 12:21:10,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7057 to 5293. [2022-02-15 12:21:10,027 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) [2022-02-15 12:21:10,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5293 states to 5293 states and 15778 transitions. [2022-02-15 12:21:10,039 INFO L78 Accepts]: Start accepts. Automaton has 5293 states and 15778 transitions. Word has length 70 [2022-02-15 12:21:10,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:21:10,039 INFO L470 AbstractCegarLoop]: Abstraction has 5293 states and 15778 transitions. [2022-02-15 12:21:10,039 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) [2022-02-15 12:21:10,039 INFO L276 IsEmpty]: Start isEmpty. Operand 5293 states and 15778 transitions. [2022-02-15 12:21:10,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:21:10,047 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:21:10,047 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] [2022-02-15 12:21:10,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-02-15 12:21:10,247 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 [2022-02-15 12:21:10,247 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:21:10,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:21:10,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1369209191, now seen corresponding path program 72 times [2022-02-15 12:21:10,248 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:21:10,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101118325] [2022-02-15 12:21:10,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:21:10,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:21:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:21:10,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:10,383 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:21:10,383 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101118325] [2022-02-15 12:21:10,383 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101118325] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:21:10,383 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308221206] [2022-02-15 12:21:10,383 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:21:10,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:21:10,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:21:10,384 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) [2022-02-15 12:21:10,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-02-15 12:21:10,478 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-15 12:21:10,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:21:10,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:21:10,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:21:10,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:10,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:21:11,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:11,333 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308221206] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:21:11,333 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:21:11,333 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-02-15 12:21:11,333 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276187309] [2022-02-15 12:21:11,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:21:11,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:21:11,333 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:21:11,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:21:11,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=917, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:21:11,334 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) [2022-02-15 12:21:14,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:21:14,075 INFO L93 Difference]: Finished difference Result 8261 states and 24206 transitions. [2022-02-15 12:21:14,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-15 12:21:14,076 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 [2022-02-15 12:21:14,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:21:14,091 INFO L225 Difference]: With dead ends: 8261 [2022-02-15 12:21:14,091 INFO L226 Difference]: Without dead ends: 8172 [2022-02-15 12:21:14,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2641 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1226, Invalid=7146, Unknown=0, NotChecked=0, Total=8372 [2022-02-15 12:21:14,092 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 439 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:21:14,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 2745 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:21:14,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8172 states. [2022-02-15 12:21:14,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8172 to 5485. [2022-02-15 12:21:14,178 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) [2022-02-15 12:21:14,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5485 states to 5485 states and 16330 transitions. [2022-02-15 12:21:14,188 INFO L78 Accepts]: Start accepts. Automaton has 5485 states and 16330 transitions. Word has length 70 [2022-02-15 12:21:14,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:21:14,189 INFO L470 AbstractCegarLoop]: Abstraction has 5485 states and 16330 transitions. [2022-02-15 12:21:14,189 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) [2022-02-15 12:21:14,189 INFO L276 IsEmpty]: Start isEmpty. Operand 5485 states and 16330 transitions. [2022-02-15 12:21:14,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:21:14,196 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:21:14,196 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] [2022-02-15 12:21:14,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-02-15 12:21:14,398 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 [2022-02-15 12:21:14,398 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:21:14,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:21:14,398 INFO L85 PathProgramCache]: Analyzing trace with hash 82600245, now seen corresponding path program 73 times [2022-02-15 12:21:14,398 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:21:14,398 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295431444] [2022-02-15 12:21:14,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:21:14,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:21:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:21:14,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:14,531 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:21:14,531 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295431444] [2022-02-15 12:21:14,531 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295431444] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:21:14,531 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35349395] [2022-02-15 12:21:14,531 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:21:14,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:21:14,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:21:14,533 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) [2022-02-15 12:21:14,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-02-15 12:21:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:21:14,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:21:14,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:21:14,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:14,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:21:15,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:15,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35349395] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:21:15,487 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:21:15,487 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-02-15 12:21:15,487 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105187427] [2022-02-15 12:21:15,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:21:15,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:21:15,487 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:21:15,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:21:15,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=922, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:21:15,488 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) [2022-02-15 12:21:18,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:21:18,863 INFO L93 Difference]: Finished difference Result 8548 states and 24902 transitions. [2022-02-15 12:21:18,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-15 12:21:18,863 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 [2022-02-15 12:21:18,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:21:18,877 INFO L225 Difference]: With dead ends: 8548 [2022-02-15 12:21:18,877 INFO L226 Difference]: Without dead ends: 8347 [2022-02-15 12:21:18,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3949 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1577, Invalid=10195, Unknown=0, NotChecked=0, Total=11772 [2022-02-15 12:21:18,878 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 619 mSDsluCounter, 2921 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:21:18,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 2929 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:21:18,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8347 states. [2022-02-15 12:21:18,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8347 to 5393. [2022-02-15 12:21:18,952 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) [2022-02-15 12:21:18,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5393 states to 5393 states and 16073 transitions. [2022-02-15 12:21:18,961 INFO L78 Accepts]: Start accepts. Automaton has 5393 states and 16073 transitions. Word has length 70 [2022-02-15 12:21:18,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:21:18,961 INFO L470 AbstractCegarLoop]: Abstraction has 5393 states and 16073 transitions. [2022-02-15 12:21:18,961 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) [2022-02-15 12:21:18,962 INFO L276 IsEmpty]: Start isEmpty. Operand 5393 states and 16073 transitions. [2022-02-15 12:21:18,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:21:18,968 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:21:18,968 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] [2022-02-15 12:21:18,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-02-15 12:21:19,168 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 [2022-02-15 12:21:19,168 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:21:19,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:21:19,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1855705927, now seen corresponding path program 74 times [2022-02-15 12:21:19,169 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:21:19,169 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133600205] [2022-02-15 12:21:19,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:21:19,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:21:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:21:19,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:19,294 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:21:19,294 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133600205] [2022-02-15 12:21:19,294 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133600205] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:21:19,294 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660339679] [2022-02-15 12:21:19,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:21:19,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:21:19,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:21:19,295 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) [2022-02-15 12:21:19,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-02-15 12:21:19,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:21:19,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:21:19,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:21:19,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:21:19,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:19,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:21:20,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:20,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660339679] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:21:20,235 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:21:20,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-02-15 12:21:20,235 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309815019] [2022-02-15 12:21:20,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:21:20,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:21:20,235 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:21:20,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:21:20,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:21:20,236 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) [2022-02-15 12:21:24,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:21:24,065 INFO L93 Difference]: Finished difference Result 9391 states and 27767 transitions. [2022-02-15 12:21:24,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-02-15 12:21:24,066 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 [2022-02-15 12:21:24,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:21:24,080 INFO L225 Difference]: With dead ends: 9391 [2022-02-15 12:21:24,080 INFO L226 Difference]: Without dead ends: 9321 [2022-02-15 12:21:24,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4948 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2244, Invalid=11798, Unknown=0, NotChecked=0, Total=14042 [2022-02-15 12:21:24,082 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 549 mSDsluCounter, 2772 mSDsCounter, 0 mSdLazyCounter, 1513 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:21:24,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 2783 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1513 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:21:24,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9321 states. [2022-02-15 12:21:24,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9321 to 5713. [2022-02-15 12:21:24,163 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) [2022-02-15 12:21:24,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5713 states to 5713 states and 17081 transitions. [2022-02-15 12:21:24,172 INFO L78 Accepts]: Start accepts. Automaton has 5713 states and 17081 transitions. Word has length 70 [2022-02-15 12:21:24,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:21:24,173 INFO L470 AbstractCegarLoop]: Abstraction has 5713 states and 17081 transitions. [2022-02-15 12:21:24,173 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) [2022-02-15 12:21:24,173 INFO L276 IsEmpty]: Start isEmpty. Operand 5713 states and 17081 transitions. [2022-02-15 12:21:24,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:21:24,179 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:21:24,179 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] [2022-02-15 12:21:24,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-02-15 12:21:24,380 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 [2022-02-15 12:21:24,380 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:21:24,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:21:24,380 INFO L85 PathProgramCache]: Analyzing trace with hash 569096981, now seen corresponding path program 75 times [2022-02-15 12:21:24,380 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:21:24,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658503934] [2022-02-15 12:21:24,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:21:24,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:21:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:21:24,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:24,501 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:21:24,502 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658503934] [2022-02-15 12:21:24,502 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658503934] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:21:24,502 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506630266] [2022-02-15 12:21:24,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:21:24,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:21:24,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:21:24,503 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) [2022-02-15 12:21:24,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-02-15 12:21:24,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-15 12:21:24,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:21:24,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:21:24,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:21:24,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:24,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:21:25,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:25,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506630266] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:21:25,453 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:21:25,453 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-02-15 12:21:25,453 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471562166] [2022-02-15 12:21:25,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:21:25,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-15 12:21:25,454 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:21:25,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-15 12:21:25,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1047, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 12:21:25,454 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) [2022-02-15 12:21:30,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:21:30,829 INFO L93 Difference]: Finished difference Result 10418 states and 30896 transitions. [2022-02-15 12:21:30,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-02-15 12:21:30,829 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 [2022-02-15 12:21:30,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:21:30,845 INFO L225 Difference]: With dead ends: 10418 [2022-02-15 12:21:30,845 INFO L226 Difference]: Without dead ends: 10211 [2022-02-15 12:21:30,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10590 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4077, Invalid=23979, Unknown=0, NotChecked=0, Total=28056 [2022-02-15 12:21:30,846 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 824 mSDsluCounter, 3364 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 3386 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:21:30,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 3386 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1774 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:21:30,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10211 states. [2022-02-15 12:21:30,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10211 to 6809. [2022-02-15 12:21:30,943 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) [2022-02-15 12:21:30,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6809 states to 6809 states and 20479 transitions. [2022-02-15 12:21:30,956 INFO L78 Accepts]: Start accepts. Automaton has 6809 states and 20479 transitions. Word has length 70 [2022-02-15 12:21:30,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:21:30,956 INFO L470 AbstractCegarLoop]: Abstraction has 6809 states and 20479 transitions. [2022-02-15 12:21:30,956 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) [2022-02-15 12:21:30,956 INFO L276 IsEmpty]: Start isEmpty. Operand 6809 states and 20479 transitions. [2022-02-15 12:21:30,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:21:30,965 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:21:30,965 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] [2022-02-15 12:21:30,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-02-15 12:21:31,167 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 [2022-02-15 12:21:31,167 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:21:31,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:21:31,168 INFO L85 PathProgramCache]: Analyzing trace with hash -845833117, now seen corresponding path program 76 times [2022-02-15 12:21:31,168 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:21:31,168 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589506447] [2022-02-15 12:21:31,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:21:31,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:21:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:21:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:31,303 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:21:31,303 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589506447] [2022-02-15 12:21:31,303 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589506447] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:21:31,303 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387729696] [2022-02-15 12:21:31,304 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:21:31,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:21:31,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:21:31,306 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) [2022-02-15 12:21:31,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-02-15 12:21:31,399 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:21:31,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:21:31,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-15 12:21:31,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:21:31,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:31,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:21:32,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:32,164 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387729696] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:21:32,164 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:21:32,164 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:21:32,164 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011809912] [2022-02-15 12:21:32,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:21:32,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:21:32,164 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:21:32,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:21:32,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:21:32,165 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) [2022-02-15 12:21:33,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:21:33,105 INFO L93 Difference]: Finished difference Result 8250 states and 24519 transitions. [2022-02-15 12:21:33,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 12:21:33,106 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 [2022-02-15 12:21:33,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:21:33,120 INFO L225 Difference]: With dead ends: 8250 [2022-02-15 12:21:33,120 INFO L226 Difference]: Without dead ends: 8187 [2022-02-15 12:21:33,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=496, Invalid=2810, Unknown=0, NotChecked=0, Total=3306 [2022-02-15 12:21:33,121 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 339 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 2616 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:21:33,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 2616 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:21:33,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8187 states. [2022-02-15 12:21:33,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8187 to 6813. [2022-02-15 12:21:33,218 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) [2022-02-15 12:21:33,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6813 states to 6813 states and 20490 transitions. [2022-02-15 12:21:33,234 INFO L78 Accepts]: Start accepts. Automaton has 6813 states and 20490 transitions. Word has length 70 [2022-02-15 12:21:33,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:21:33,234 INFO L470 AbstractCegarLoop]: Abstraction has 6813 states and 20490 transitions. [2022-02-15 12:21:33,234 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) [2022-02-15 12:21:33,234 INFO L276 IsEmpty]: Start isEmpty. Operand 6813 states and 20490 transitions. [2022-02-15 12:21:33,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:21:33,244 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:21:33,244 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] [2022-02-15 12:21:33,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-02-15 12:21:33,445 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 [2022-02-15 12:21:33,445 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:21:33,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:21:33,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1864163485, now seen corresponding path program 77 times [2022-02-15 12:21:33,445 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:21:33,445 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357725274] [2022-02-15 12:21:33,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:21:33,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:21:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:21:33,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:33,575 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:21:33,575 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357725274] [2022-02-15 12:21:33,575 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357725274] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:21:33,575 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977023888] [2022-02-15 12:21:33,575 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:21:33,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:21:33,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:21:33,576 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) [2022-02-15 12:21:33,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-02-15 12:21:33,669 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 12:21:33,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:21:33,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:21:33,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:21:33,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:33,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:21:34,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:34,400 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977023888] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:21:34,400 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:21:34,400 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:21:34,401 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176979684] [2022-02-15 12:21:34,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:21:34,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:21:34,401 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:21:34,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:21:34,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:21:34,401 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) [2022-02-15 12:21:35,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:21:35,375 INFO L93 Difference]: Finished difference Result 8670 states and 25800 transitions. [2022-02-15 12:21:35,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-15 12:21:35,375 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 [2022-02-15 12:21:35,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:21:35,394 INFO L225 Difference]: With dead ends: 8670 [2022-02-15 12:21:35,394 INFO L226 Difference]: Without dead ends: 8592 [2022-02-15 12:21:35,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=629, Invalid=3531, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 12:21:35,395 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 337 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 2357 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:21:35,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 2357 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:21:35,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8592 states. [2022-02-15 12:21:35,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8592 to 7069. [2022-02-15 12:21:35,492 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) [2022-02-15 12:21:35,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7069 states to 7069 states and 21198 transitions. [2022-02-15 12:21:35,505 INFO L78 Accepts]: Start accepts. Automaton has 7069 states and 21198 transitions. Word has length 70 [2022-02-15 12:21:35,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:21:35,505 INFO L470 AbstractCegarLoop]: Abstraction has 7069 states and 21198 transitions. [2022-02-15 12:21:35,505 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) [2022-02-15 12:21:35,505 INFO L276 IsEmpty]: Start isEmpty. Operand 7069 states and 21198 transitions. [2022-02-15 12:21:35,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:21:35,514 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:21:35,514 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] [2022-02-15 12:21:35,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-02-15 12:21:35,715 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 [2022-02-15 12:21:35,715 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:21:35,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:21:35,715 INFO L85 PathProgramCache]: Analyzing trace with hash -801486417, now seen corresponding path program 78 times [2022-02-15 12:21:35,715 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:21:35,715 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778270902] [2022-02-15 12:21:35,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:21:35,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:21:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:21:35,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:35,861 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:21:35,861 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778270902] [2022-02-15 12:21:35,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778270902] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:21:35,861 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466109651] [2022-02-15 12:21:35,861 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:21:35,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:21:35,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:21:35,862 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) [2022-02-15 12:21:35,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-02-15 12:21:35,975 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-15 12:21:35,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:21:35,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:21:35,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:21:36,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:36,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:21:36,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:36,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466109651] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:21:36,942 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:21:36,942 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-02-15 12:21:36,942 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423408850] [2022-02-15 12:21:36,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:21:36,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:21:36,942 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:21:36,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:21:36,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:21:36,943 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) [2022-02-15 12:21:39,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:21:39,867 INFO L93 Difference]: Finished difference Result 9783 states and 28923 transitions. [2022-02-15 12:21:39,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-15 12:21:39,867 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 [2022-02-15 12:21:39,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:21:39,883 INFO L225 Difference]: With dead ends: 9783 [2022-02-15 12:21:39,883 INFO L226 Difference]: Without dead ends: 9557 [2022-02-15 12:21:39,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3056 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1259, Invalid=8641, Unknown=0, NotChecked=0, Total=9900 [2022-02-15 12:21:39,884 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 536 mSDsluCounter, 2496 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 2539 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:21:39,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [536 Valid, 2539 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:21:39,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9557 states. [2022-02-15 12:21:39,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9557 to 7145. [2022-02-15 12:21:39,980 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) [2022-02-15 12:21:39,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7145 states to 7145 states and 21403 transitions. [2022-02-15 12:21:39,995 INFO L78 Accepts]: Start accepts. Automaton has 7145 states and 21403 transitions. Word has length 70 [2022-02-15 12:21:39,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:21:39,995 INFO L470 AbstractCegarLoop]: Abstraction has 7145 states and 21403 transitions. [2022-02-15 12:21:39,995 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) [2022-02-15 12:21:39,996 INFO L276 IsEmpty]: Start isEmpty. Operand 7145 states and 21403 transitions. [2022-02-15 12:21:40,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:21:40,006 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:21:40,006 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] [2022-02-15 12:21:40,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-02-15 12:21:40,206 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 [2022-02-15 12:21:40,206 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:21:40,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:21:40,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1944307075, now seen corresponding path program 79 times [2022-02-15 12:21:40,207 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:21:40,207 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754902688] [2022-02-15 12:21:40,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:21:40,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:21:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:21:40,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:40,337 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:21:40,338 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754902688] [2022-02-15 12:21:40,338 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754902688] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:21:40,338 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245087722] [2022-02-15 12:21:40,338 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:21:40,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:21:40,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:21:40,340 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) [2022-02-15 12:21:40,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-02-15 12:21:40,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:21:40,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:21:40,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:21:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:40,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:21:41,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:41,295 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245087722] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:21:41,295 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:21:41,295 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-02-15 12:21:41,295 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440680856] [2022-02-15 12:21:41,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:21:41,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:21:41,295 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:21:41,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:21:41,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:21:41,295 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) [2022-02-15 12:21:45,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:21:45,599 INFO L93 Difference]: Finished difference Result 12364 states and 36685 transitions. [2022-02-15 12:21:45,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-02-15 12:21:45,600 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 [2022-02-15 12:21:45,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:21:45,630 INFO L225 Difference]: With dead ends: 12364 [2022-02-15 12:21:45,630 INFO L226 Difference]: Without dead ends: 12286 [2022-02-15 12:21:45,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6266 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2687, Invalid=14869, Unknown=0, NotChecked=0, Total=17556 [2022-02-15 12:21:45,632 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 719 mSDsluCounter, 2488 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 2546 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:21:45,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [719 Valid, 2546 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:21:45,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12286 states. [2022-02-15 12:21:45,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12286 to 7585. [2022-02-15 12:21:45,826 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) [2022-02-15 12:21:45,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7585 states to 7585 states and 22781 transitions. [2022-02-15 12:21:45,841 INFO L78 Accepts]: Start accepts. Automaton has 7585 states and 22781 transitions. Word has length 70 [2022-02-15 12:21:45,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:21:45,841 INFO L470 AbstractCegarLoop]: Abstraction has 7585 states and 22781 transitions. [2022-02-15 12:21:45,841 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) [2022-02-15 12:21:45,841 INFO L276 IsEmpty]: Start isEmpty. Operand 7585 states and 22781 transitions. [2022-02-15 12:21:45,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:21:45,852 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:21:45,852 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] [2022-02-15 12:21:45,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-02-15 12:21:46,052 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 [2022-02-15 12:21:46,053 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:21:46,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:21:46,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1064051275, now seen corresponding path program 80 times [2022-02-15 12:21:46,053 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:21:46,053 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468280246] [2022-02-15 12:21:46,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:21:46,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:21:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:21:46,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:46,180 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:21:46,180 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468280246] [2022-02-15 12:21:46,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468280246] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:21:46,180 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727123902] [2022-02-15 12:21:46,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:21:46,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:21:46,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:21:46,181 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) [2022-02-15 12:21:46,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-02-15 12:21:46,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:21:46,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:21:46,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:21:46,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:21:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:46,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:21:47,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:47,140 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727123902] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:21:47,140 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:21:47,140 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-02-15 12:21:47,140 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681624445] [2022-02-15 12:21:47,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:21:47,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:21:47,140 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:21:47,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:21:47,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=922, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:21:47,141 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) [2022-02-15 12:21:52,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:21:52,544 INFO L93 Difference]: Finished difference Result 13169 states and 38887 transitions. [2022-02-15 12:21:52,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-02-15 12:21:52,544 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 [2022-02-15 12:21:52,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:21:52,569 INFO L225 Difference]: With dead ends: 13169 [2022-02-15 12:21:52,569 INFO L226 Difference]: Without dead ends: 12961 [2022-02-15 12:21:52,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9122 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=3474, Invalid=20706, Unknown=0, NotChecked=0, Total=24180 [2022-02-15 12:21:52,571 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 835 mSDsluCounter, 3017 mSDsCounter, 0 mSdLazyCounter, 1758 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 1911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:21:52,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [835 Valid, 3064 Invalid, 1911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1758 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:21:52,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12961 states. [2022-02-15 12:21:52,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12961 to 8545. [2022-02-15 12:21:52,722 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) [2022-02-15 12:21:52,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8545 states to 8545 states and 25665 transitions. [2022-02-15 12:21:52,740 INFO L78 Accepts]: Start accepts. Automaton has 8545 states and 25665 transitions. Word has length 70 [2022-02-15 12:21:52,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:21:52,740 INFO L470 AbstractCegarLoop]: Abstraction has 8545 states and 25665 transitions. [2022-02-15 12:21:52,740 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) [2022-02-15 12:21:52,740 INFO L276 IsEmpty]: Start isEmpty. Operand 8545 states and 25665 transitions. [2022-02-15 12:21:52,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:21:52,752 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:21:52,752 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] [2022-02-15 12:21:52,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-02-15 12:21:52,952 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 [2022-02-15 12:21:52,953 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:21:52,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:21:52,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1956750805, now seen corresponding path program 81 times [2022-02-15 12:21:52,953 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:21:52,953 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370260710] [2022-02-15 12:21:52,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:21:52,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:21:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:21:53,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:53,112 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:21:53,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370260710] [2022-02-15 12:21:53,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370260710] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:21:53,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806619902] [2022-02-15 12:21:53,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:21:53,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:21:53,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:21:53,116 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) [2022-02-15 12:21:53,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-02-15 12:21:53,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-15 12:21:53,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:21:53,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:21:53,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:21:53,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:53,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:21:54,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:21:54,140 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806619902] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:21:54,140 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:21:54,140 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-02-15 12:21:54,140 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114669253] [2022-02-15 12:21:54,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:21:54,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:21:54,141 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:21:54,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:21:54,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:21:54,141 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) [2022-02-15 12:22:00,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:22:00,496 INFO L93 Difference]: Finished difference Result 15093 states and 44939 transitions. [2022-02-15 12:22:00,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2022-02-15 12:22:00,496 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 [2022-02-15 12:22:00,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:22:00,527 INFO L225 Difference]: With dead ends: 15093 [2022-02-15 12:22:00,528 INFO L226 Difference]: Without dead ends: 15004 [2022-02-15 12:22:00,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12633 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=4476, Invalid=28466, Unknown=0, NotChecked=0, Total=32942 [2022-02-15 12:22:00,530 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 754 mSDsluCounter, 3362 mSDsCounter, 0 mSdLazyCounter, 1960 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 3437 SdHoareTripleChecker+Invalid, 2094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 12:22:00,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 3437 Invalid, 2094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1960 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 12:22:00,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15004 states. [2022-02-15 12:22:00,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15004 to 8781. [2022-02-15 12:22:00,689 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) [2022-02-15 12:22:00,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8781 states to 8781 states and 26422 transitions. [2022-02-15 12:22:00,706 INFO L78 Accepts]: Start accepts. Automaton has 8781 states and 26422 transitions. Word has length 70 [2022-02-15 12:22:00,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:22:00,706 INFO L470 AbstractCegarLoop]: Abstraction has 8781 states and 26422 transitions. [2022-02-15 12:22:00,707 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) [2022-02-15 12:22:00,707 INFO L276 IsEmpty]: Start isEmpty. Operand 8781 states and 26422 transitions. [2022-02-15 12:22:00,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:22:00,748 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:22:00,748 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] [2022-02-15 12:22:00,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-02-15 12:22:00,948 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 [2022-02-15 12:22:00,949 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:22:00,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:22:00,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1791018719, now seen corresponding path program 82 times [2022-02-15 12:22:00,949 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:22:00,949 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446100535] [2022-02-15 12:22:00,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:22:00,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:22:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:22:01,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:01,078 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:22:01,078 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446100535] [2022-02-15 12:22:01,078 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446100535] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:22:01,078 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590616061] [2022-02-15 12:22:01,078 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:22:01,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:22:01,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:22:01,080 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) [2022-02-15 12:22:01,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-02-15 12:22:01,175 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:22:01,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:22:01,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-15 12:22:01,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:22:01,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:01,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:22:01,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:01,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590616061] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:22:01,897 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:22:01,898 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:22:01,898 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112815960] [2022-02-15 12:22:01,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:22:01,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:22:01,898 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:22:01,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:22:01,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:22:01,899 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) [2022-02-15 12:22:03,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:22:03,526 INFO L93 Difference]: Finished difference Result 11574 states and 34306 transitions. [2022-02-15 12:22:03,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-15 12:22:03,526 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 [2022-02-15 12:22:03,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:22:03,547 INFO L225 Difference]: With dead ends: 11574 [2022-02-15 12:22:03,547 INFO L226 Difference]: Without dead ends: 11499 [2022-02-15 12:22:03,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2256 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1028, Invalid=6112, Unknown=0, NotChecked=0, Total=7140 [2022-02-15 12:22:03,549 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 522 mSDsluCounter, 2557 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 2611 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:22:03,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 2611 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:22:03,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11499 states. [2022-02-15 12:22:03,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11499 to 8805. [2022-02-15 12:22:03,713 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) [2022-02-15 12:22:03,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8805 states to 8805 states and 26488 transitions. [2022-02-15 12:22:03,731 INFO L78 Accepts]: Start accepts. Automaton has 8805 states and 26488 transitions. Word has length 70 [2022-02-15 12:22:03,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:22:03,731 INFO L470 AbstractCegarLoop]: Abstraction has 8805 states and 26488 transitions. [2022-02-15 12:22:03,731 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) [2022-02-15 12:22:03,731 INFO L276 IsEmpty]: Start isEmpty. Operand 8805 states and 26488 transitions. [2022-02-15 12:22:03,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:22:03,743 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:22:03,743 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] [2022-02-15 12:22:03,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-02-15 12:22:03,943 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 [2022-02-15 12:22:03,944 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:22:03,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:22:03,944 INFO L85 PathProgramCache]: Analyzing trace with hash 206048025, now seen corresponding path program 83 times [2022-02-15 12:22:03,944 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:22:03,944 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625097508] [2022-02-15 12:22:03,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:22:03,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:22:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:22:04,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:04,072 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:22:04,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625097508] [2022-02-15 12:22:04,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625097508] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:22:04,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401771957] [2022-02-15 12:22:04,072 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:22:04,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:22:04,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:22:04,073 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) [2022-02-15 12:22:04,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-02-15 12:22:04,168 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 12:22:04,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:22:04,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:22:04,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:22:04,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:04,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:22:04,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:04,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401771957] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:22:04,869 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:22:04,869 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:22:04,869 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112144478] [2022-02-15 12:22:04,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:22:04,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:22:04,870 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:22:04,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:22:04,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:22:04,870 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) [2022-02-15 12:22:06,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:22:06,346 INFO L93 Difference]: Finished difference Result 11718 states and 35118 transitions. [2022-02-15 12:22:06,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-15 12:22:06,347 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 [2022-02-15 12:22:06,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:22:06,373 INFO L225 Difference]: With dead ends: 11718 [2022-02-15 12:22:06,373 INFO L226 Difference]: Without dead ends: 11640 [2022-02-15 12:22:06,373 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 [2022-02-15 12:22:06,373 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 399 mSDsluCounter, 2416 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:22:06,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 2471 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:22:06,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11640 states. [2022-02-15 12:22:06,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11640 to 8957. [2022-02-15 12:22:06,520 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) [2022-02-15 12:22:06,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8957 states to 8957 states and 26994 transitions. [2022-02-15 12:22:06,538 INFO L78 Accepts]: Start accepts. Automaton has 8957 states and 26994 transitions. Word has length 70 [2022-02-15 12:22:06,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:22:06,538 INFO L470 AbstractCegarLoop]: Abstraction has 8957 states and 26994 transitions. [2022-02-15 12:22:06,538 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) [2022-02-15 12:22:06,538 INFO L276 IsEmpty]: Start isEmpty. Operand 8957 states and 26994 transitions. [2022-02-15 12:22:06,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:22:06,550 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:22:06,550 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] [2022-02-15 12:22:06,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-02-15 12:22:06,750 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 [2022-02-15 12:22:06,751 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:22:06,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:22:06,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1835365419, now seen corresponding path program 84 times [2022-02-15 12:22:06,751 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:22:06,751 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761206662] [2022-02-15 12:22:06,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:22:06,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:22:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:22:06,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:06,879 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:22:06,880 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761206662] [2022-02-15 12:22:06,880 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761206662] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:22:06,880 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489210672] [2022-02-15 12:22:06,880 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:22:06,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:22:06,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:22:06,881 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) [2022-02-15 12:22:06,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-02-15 12:22:06,978 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-15 12:22:06,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:22:06,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:22:06,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:22:07,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:07,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:22:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:07,824 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489210672] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:22:07,824 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:22:07,824 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-02-15 12:22:07,824 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57237141] [2022-02-15 12:22:07,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:22:07,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:22:07,824 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:22:07,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:22:07,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:22:07,825 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) [2022-02-15 12:22:12,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:22:12,226 INFO L93 Difference]: Finished difference Result 12589 states and 37341 transitions. [2022-02-15 12:22:12,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-02-15 12:22:12,226 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 [2022-02-15 12:22:12,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:22:12,247 INFO L225 Difference]: With dead ends: 12589 [2022-02-15 12:22:12,247 INFO L226 Difference]: Without dead ends: 12363 [2022-02-15 12:22:12,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6416 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2449, Invalid=15373, Unknown=0, NotChecked=0, Total=17822 [2022-02-15 12:22:12,248 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 765 mSDsluCounter, 3205 mSDsCounter, 0 mSdLazyCounter, 1773 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 3232 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:22:12,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 3232 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1773 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:22:12,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12363 states. [2022-02-15 12:22:12,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12363 to 9093. [2022-02-15 12:22:12,373 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) [2022-02-15 12:22:12,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9093 states to 9093 states and 27416 transitions. [2022-02-15 12:22:12,391 INFO L78 Accepts]: Start accepts. Automaton has 9093 states and 27416 transitions. Word has length 70 [2022-02-15 12:22:12,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:22:12,391 INFO L470 AbstractCegarLoop]: Abstraction has 9093 states and 27416 transitions. [2022-02-15 12:22:12,391 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) [2022-02-15 12:22:12,391 INFO L276 IsEmpty]: Start isEmpty. Operand 9093 states and 27416 transitions. [2022-02-15 12:22:12,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:22:12,402 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:22:12,402 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] [2022-02-15 12:22:12,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-02-15 12:22:12,603 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 [2022-02-15 12:22:12,603 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:22:12,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:22:12,603 INFO L85 PathProgramCache]: Analyzing trace with hash 692544761, now seen corresponding path program 85 times [2022-02-15 12:22:12,603 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:22:12,603 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353073024] [2022-02-15 12:22:12,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:22:12,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:22:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:22:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:12,726 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:22:12,726 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353073024] [2022-02-15 12:22:12,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353073024] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:22:12,726 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564484941] [2022-02-15 12:22:12,726 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:22:12,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:22:12,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:22:12,727 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) [2022-02-15 12:22:12,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-02-15 12:22:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:22:12,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:22:12,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:22:13,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:13,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:22:13,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:13,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564484941] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:22:13,683 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:22:13,683 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-02-15 12:22:13,683 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182034466] [2022-02-15 12:22:13,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:22:13,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:22:13,683 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:22:13,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:22:13,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=898, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:22:13,684 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) [2022-02-15 12:22:17,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:22:17,668 INFO L93 Difference]: Finished difference Result 13905 states and 41521 transitions. [2022-02-15 12:22:17,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-02-15 12:22:17,668 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 [2022-02-15 12:22:17,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:22:17,694 INFO L225 Difference]: With dead ends: 13905 [2022-02-15 12:22:17,694 INFO L226 Difference]: Without dead ends: 13819 [2022-02-15 12:22:17,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6479 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3010, Invalid=14546, Unknown=0, NotChecked=0, Total=17556 [2022-02-15 12:22:17,695 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 827 mSDsluCounter, 2396 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 2465 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:22:17,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 2465 Invalid, 1513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:22:17,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13819 states. [2022-02-15 12:22:17,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13819 to 9969. [2022-02-15 12:22:17,847 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) [2022-02-15 12:22:17,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9969 states to 9969 states and 30121 transitions. [2022-02-15 12:22:17,866 INFO L78 Accepts]: Start accepts. Automaton has 9969 states and 30121 transitions. Word has length 70 [2022-02-15 12:22:17,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:22:17,867 INFO L470 AbstractCegarLoop]: Abstraction has 9969 states and 30121 transitions. [2022-02-15 12:22:17,867 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) [2022-02-15 12:22:17,867 INFO L276 IsEmpty]: Start isEmpty. Operand 9969 states and 30121 transitions. [2022-02-15 12:22:17,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:22:17,879 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:22:17,880 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] [2022-02-15 12:22:17,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-02-15 12:22:18,080 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 [2022-02-15 12:22:18,080 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:22:18,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:22:18,080 INFO L85 PathProgramCache]: Analyzing trace with hash 680101031, now seen corresponding path program 86 times [2022-02-15 12:22:18,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:22:18,081 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375692759] [2022-02-15 12:22:18,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:22:18,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:22:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:22:18,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:18,204 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:22:18,204 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375692759] [2022-02-15 12:22:18,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375692759] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:22:18,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223516715] [2022-02-15 12:22:18,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:22:18,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:22:18,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:22:18,206 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) [2022-02-15 12:22:18,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-02-15 12:22:18,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:22:18,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:22:18,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:22:18,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:22:18,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:18,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:22:19,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:19,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223516715] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:22:19,171 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:22:19,171 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-02-15 12:22:19,171 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351045114] [2022-02-15 12:22:19,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:22:19,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:22:19,171 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:22:19,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:22:19,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:22:19,172 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) [2022-02-15 12:22:23,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:22:23,616 INFO L93 Difference]: Finished difference Result 16134 states and 48531 transitions. [2022-02-15 12:22:23,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-02-15 12:22:23,617 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 [2022-02-15 12:22:23,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:22:23,647 INFO L225 Difference]: With dead ends: 16134 [2022-02-15 12:22:23,647 INFO L226 Difference]: Without dead ends: 16045 [2022-02-15 12:22:23,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6718 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=3044, Invalid=15316, Unknown=0, NotChecked=0, Total=18360 [2022-02-15 12:22:23,649 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 748 mSDsluCounter, 3068 mSDsCounter, 0 mSdLazyCounter, 1726 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 1883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:22:23,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [748 Valid, 3134 Invalid, 1883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1726 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:22:23,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16045 states. [2022-02-15 12:22:23,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16045 to 10725. [2022-02-15 12:22:23,831 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) [2022-02-15 12:22:23,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10725 states to 10725 states and 32564 transitions. [2022-02-15 12:22:23,911 INFO L78 Accepts]: Start accepts. Automaton has 10725 states and 32564 transitions. Word has length 70 [2022-02-15 12:22:23,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:22:23,911 INFO L470 AbstractCegarLoop]: Abstraction has 10725 states and 32564 transitions. [2022-02-15 12:22:23,911 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) [2022-02-15 12:22:23,911 INFO L276 IsEmpty]: Start isEmpty. Operand 10725 states and 32564 transitions. [2022-02-15 12:22:23,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:22:23,924 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:22:23,925 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] [2022-02-15 12:22:23,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-02-15 12:22:24,125 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 [2022-02-15 12:22:24,125 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:22:24,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:22:24,125 INFO L85 PathProgramCache]: Analyzing trace with hash -86569393, now seen corresponding path program 87 times [2022-02-15 12:22:24,125 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:22:24,125 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289288558] [2022-02-15 12:22:24,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:22:24,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:22:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:22:24,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:24,248 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:22:24,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289288558] [2022-02-15 12:22:24,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289288558] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:22:24,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974606198] [2022-02-15 12:22:24,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:22:24,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:22:24,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:22:24,249 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) [2022-02-15 12:22:24,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-02-15 12:22:24,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-15 12:22:24,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:22:24,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:22:24,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:22:24,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:24,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:22:25,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:25,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974606198] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:22:25,194 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:22:25,194 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-02-15 12:22:25,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496732891] [2022-02-15 12:22:25,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:22:25,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-15 12:22:25,194 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:22:25,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-15 12:22:25,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1055, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 12:22:25,195 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) [2022-02-15 12:22:26,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:22:26,963 INFO L93 Difference]: Finished difference Result 12758 states and 38181 transitions. [2022-02-15 12:22:26,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-15 12:22:26,964 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 [2022-02-15 12:22:26,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:22:26,990 INFO L225 Difference]: With dead ends: 12758 [2022-02-15 12:22:26,990 INFO L226 Difference]: Without dead ends: 12583 [2022-02-15 12:22:26,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1787 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=765, Invalid=5397, Unknown=0, NotChecked=0, Total=6162 [2022-02-15 12:22:26,991 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 493 mSDsluCounter, 2505 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:22:26,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 2525 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:22:27,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12583 states. [2022-02-15 12:22:27,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12583 to 11021. [2022-02-15 12:22:27,160 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) [2022-02-15 12:22:27,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11021 states to 11021 states and 33434 transitions. [2022-02-15 12:22:27,184 INFO L78 Accepts]: Start accepts. Automaton has 11021 states and 33434 transitions. Word has length 70 [2022-02-15 12:22:27,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:22:27,184 INFO L470 AbstractCegarLoop]: Abstraction has 11021 states and 33434 transitions. [2022-02-15 12:22:27,184 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) [2022-02-15 12:22:27,185 INFO L276 IsEmpty]: Start isEmpty. Operand 11021 states and 33434 transitions. [2022-02-15 12:22:27,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:22:27,200 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:22:27,200 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] [2022-02-15 12:22:27,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-02-15 12:22:27,400 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 [2022-02-15 12:22:27,401 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:22:27,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:22:27,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1525183769, now seen corresponding path program 88 times [2022-02-15 12:22:27,401 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:22:27,401 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212005493] [2022-02-15 12:22:27,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:22:27,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:22:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:22:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:27,522 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:22:27,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212005493] [2022-02-15 12:22:27,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212005493] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:22:27,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311435087] [2022-02-15 12:22:27,523 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:22:27,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:22:27,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:22:27,524 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) [2022-02-15 12:22:27,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-02-15 12:22:27,623 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:22:27,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:22:27,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-15 12:22:27,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:22:27,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:27,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:22:28,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:28,400 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311435087] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:22:28,400 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:22:28,400 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:22:28,400 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524772011] [2022-02-15 12:22:28,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:22:28,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:22:28,401 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:22:28,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:22:28,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:22:28,401 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) [2022-02-15 12:22:29,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:22:29,486 INFO L93 Difference]: Finished difference Result 12477 states and 37314 transitions. [2022-02-15 12:22:29,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 12:22:29,486 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 [2022-02-15 12:22:29,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:22:29,509 INFO L225 Difference]: With dead ends: 12477 [2022-02-15 12:22:29,509 INFO L226 Difference]: Without dead ends: 12281 [2022-02-15 12:22:29,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=406, Invalid=3254, Unknown=0, NotChecked=0, Total=3660 [2022-02-15 12:22:29,509 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 481 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:22:29,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 2814 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:22:29,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12281 states. [2022-02-15 12:22:29,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12281 to 11017. [2022-02-15 12:22:29,730 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) [2022-02-15 12:22:29,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11017 states to 11017 states and 33423 transitions. [2022-02-15 12:22:29,753 INFO L78 Accepts]: Start accepts. Automaton has 11017 states and 33423 transitions. Word has length 70 [2022-02-15 12:22:29,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:22:29,754 INFO L470 AbstractCegarLoop]: Abstraction has 11017 states and 33423 transitions. [2022-02-15 12:22:29,754 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) [2022-02-15 12:22:29,754 INFO L276 IsEmpty]: Start isEmpty. Operand 11017 states and 33423 transitions. [2022-02-15 12:22:29,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:22:29,769 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:22:29,769 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] [2022-02-15 12:22:29,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-02-15 12:22:29,971 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 [2022-02-15 12:22:29,971 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:22:29,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:22:29,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1281105169, now seen corresponding path program 89 times [2022-02-15 12:22:29,972 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:22:29,972 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095141127] [2022-02-15 12:22:29,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:22:29,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:22:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:22:30,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:30,094 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:22:30,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095141127] [2022-02-15 12:22:30,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095141127] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:22:30,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665404008] [2022-02-15 12:22:30,094 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:22:30,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:22:30,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:22:30,095 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) [2022-02-15 12:22:30,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-02-15 12:22:30,195 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:22:30,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:22:30,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:22:30,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:22:30,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:30,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:22:30,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:30,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665404008] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:22:30,956 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:22:30,956 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:22:30,956 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992198627] [2022-02-15 12:22:30,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:22:30,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:22:30,956 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:22:30,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:22:30,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:22:30,957 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) [2022-02-15 12:22:32,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:22:32,653 INFO L93 Difference]: Finished difference Result 17317 states and 52070 transitions. [2022-02-15 12:22:32,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-15 12:22:32,653 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 [2022-02-15 12:22:32,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:22:32,685 INFO L225 Difference]: With dead ends: 17317 [2022-02-15 12:22:32,685 INFO L226 Difference]: Without dead ends: 17131 [2022-02-15 12:22:32,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2053 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=827, Invalid=5653, Unknown=0, NotChecked=0, Total=6480 [2022-02-15 12:22:32,686 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 479 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 12:22:32,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 1794 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 12:22:32,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17131 states. [2022-02-15 12:22:32,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17131 to 11697. [2022-02-15 12:22:32,872 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) [2022-02-15 12:22:32,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11697 states to 11697 states and 35453 transitions. [2022-02-15 12:22:32,897 INFO L78 Accepts]: Start accepts. Automaton has 11697 states and 35453 transitions. Word has length 70 [2022-02-15 12:22:32,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:22:32,897 INFO L470 AbstractCegarLoop]: Abstraction has 11697 states and 35453 transitions. [2022-02-15 12:22:32,897 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) [2022-02-15 12:22:32,897 INFO L276 IsEmpty]: Start isEmpty. Operand 11697 states and 35453 transitions. [2022-02-15 12:22:32,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:22:32,913 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:22:32,913 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] [2022-02-15 12:22:32,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-02-15 12:22:33,113 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 [2022-02-15 12:22:33,113 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:22:33,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:22:33,113 INFO L85 PathProgramCache]: Analyzing trace with hash -360508537, now seen corresponding path program 90 times [2022-02-15 12:22:33,114 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:22:33,114 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987630] [2022-02-15 12:22:33,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:22:33,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:22:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:22:33,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:33,242 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:22:33,242 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987630] [2022-02-15 12:22:33,242 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987630] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:22:33,242 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492255250] [2022-02-15 12:22:33,242 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:22:33,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:22:33,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:22:33,243 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) [2022-02-15 12:22:33,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-02-15 12:22:33,342 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-15 12:22:33,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:22:33,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:22:33,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:22:33,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:33,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:22:34,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:34,203 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492255250] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:22:34,204 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:22:34,204 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-02-15 12:22:34,204 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010268133] [2022-02-15 12:22:34,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:22:34,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-15 12:22:34,204 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:22:34,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-15 12:22:34,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1055, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 12:22:34,205 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) [2022-02-15 12:22:36,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:22:36,932 INFO L93 Difference]: Finished difference Result 15500 states and 46196 transitions. [2022-02-15 12:22:36,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-15 12:22:36,932 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 [2022-02-15 12:22:36,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:22:36,964 INFO L225 Difference]: With dead ends: 15500 [2022-02-15 12:22:36,964 INFO L226 Difference]: Without dead ends: 15425 [2022-02-15 12:22:36,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2712 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1270, Invalid=7850, Unknown=0, NotChecked=0, Total=9120 [2022-02-15 12:22:36,964 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 494 mSDsluCounter, 3361 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 3431 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:22:36,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [494 Valid, 3431 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1823 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:22:36,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15425 states. [2022-02-15 12:22:37,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15425 to 12397. [2022-02-15 12:22:37,182 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) [2022-02-15 12:22:37,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12397 states to 12397 states and 37746 transitions. [2022-02-15 12:22:37,211 INFO L78 Accepts]: Start accepts. Automaton has 12397 states and 37746 transitions. Word has length 70 [2022-02-15 12:22:37,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:22:37,211 INFO L470 AbstractCegarLoop]: Abstraction has 12397 states and 37746 transitions. [2022-02-15 12:22:37,211 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) [2022-02-15 12:22:37,211 INFO L276 IsEmpty]: Start isEmpty. Operand 12397 states and 37746 transitions. [2022-02-15 12:22:37,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:22:37,230 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:22:37,230 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] [2022-02-15 12:22:37,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-02-15 12:22:37,431 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 [2022-02-15 12:22:37,431 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:22:37,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:22:37,431 INFO L85 PathProgramCache]: Analyzing trace with hash -398905281, now seen corresponding path program 91 times [2022-02-15 12:22:37,431 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:22:37,431 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476644027] [2022-02-15 12:22:37,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:22:37,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:22:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:22:37,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:37,556 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:22:37,556 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476644027] [2022-02-15 12:22:37,556 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476644027] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:22:37,556 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375017528] [2022-02-15 12:22:37,556 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:22:37,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:22:37,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:22:37,557 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) [2022-02-15 12:22:37,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-02-15 12:22:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:22:37,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:22:37,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:22:38,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:38,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:22:38,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:38,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375017528] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:22:38,474 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:22:38,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:22:38,474 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47339297] [2022-02-15 12:22:38,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:22:38,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:22:38,474 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:22:38,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:22:38,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:22:38,475 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) [2022-02-15 12:22:40,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:22:40,170 INFO L93 Difference]: Finished difference Result 18209 states and 54741 transitions. [2022-02-15 12:22:40,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-15 12:22:40,170 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 [2022-02-15 12:22:40,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:22:40,204 INFO L225 Difference]: With dead ends: 18209 [2022-02-15 12:22:40,205 INFO L226 Difference]: Without dead ends: 18069 [2022-02-15 12:22:40,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1844 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=867, Invalid=5139, Unknown=0, NotChecked=0, Total=6006 [2022-02-15 12:22:40,206 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 439 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:22:40,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 2400 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:22:40,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18069 states. [2022-02-15 12:22:40,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18069 to 12569. [2022-02-15 12:22:40,470 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) [2022-02-15 12:22:40,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12569 states to 12569 states and 38267 transitions. [2022-02-15 12:22:40,498 INFO L78 Accepts]: Start accepts. Automaton has 12569 states and 38267 transitions. Word has length 70 [2022-02-15 12:22:40,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:22:40,499 INFO L470 AbstractCegarLoop]: Abstraction has 12569 states and 38267 transitions. [2022-02-15 12:22:40,499 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) [2022-02-15 12:22:40,499 INFO L276 IsEmpty]: Start isEmpty. Operand 12569 states and 38267 transitions. [2022-02-15 12:22:40,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:22:40,518 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:22:40,518 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] [2022-02-15 12:22:40,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-02-15 12:22:40,719 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 [2022-02-15 12:22:40,719 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:22:40,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:22:40,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1458757001, now seen corresponding path program 92 times [2022-02-15 12:22:40,720 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:22:40,720 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984902083] [2022-02-15 12:22:40,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:22:40,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:22:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:22:40,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:40,839 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:22:40,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984902083] [2022-02-15 12:22:40,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984902083] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:22:40,840 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687996977] [2022-02-15 12:22:40,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:22:40,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:22:40,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:22:40,841 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) [2022-02-15 12:22:40,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-02-15 12:22:40,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:22:40,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:22:40,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:22:40,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:22:41,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:41,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:22:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:41,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687996977] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:22:41,727 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:22:41,727 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:22:41,727 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354581564] [2022-02-15 12:22:41,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:22:41,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:22:41,727 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:22:41,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:22:41,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:22:41,727 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) [2022-02-15 12:22:44,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:22:44,877 INFO L93 Difference]: Finished difference Result 19261 states and 57956 transitions. [2022-02-15 12:22:44,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-02-15 12:22:44,878 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 [2022-02-15 12:22:44,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:22:44,917 INFO L225 Difference]: With dead ends: 19261 [2022-02-15 12:22:44,917 INFO L226 Difference]: Without dead ends: 19135 [2022-02-15 12:22:44,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4541 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1898, Invalid=10984, Unknown=0, NotChecked=0, Total=12882 [2022-02-15 12:22:44,919 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 578 mSDsluCounter, 2606 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 2643 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:22:44,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 2643 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:22:44,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19135 states. [2022-02-15 12:22:45,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19135 to 12745. [2022-02-15 12:22:45,195 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) [2022-02-15 12:22:45,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12745 states to 12745 states and 38811 transitions. [2022-02-15 12:22:45,225 INFO L78 Accepts]: Start accepts. Automaton has 12745 states and 38811 transitions. Word has length 70 [2022-02-15 12:22:45,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:22:45,225 INFO L470 AbstractCegarLoop]: Abstraction has 12745 states and 38811 transitions. [2022-02-15 12:22:45,225 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) [2022-02-15 12:22:45,225 INFO L276 IsEmpty]: Start isEmpty. Operand 12745 states and 38811 transitions. [2022-02-15 12:22:45,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:22:45,245 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:22:45,245 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] [2022-02-15 12:22:45,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-02-15 12:22:45,445 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 [2022-02-15 12:22:45,445 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:22:45,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:22:45,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1497153745, now seen corresponding path program 93 times [2022-02-15 12:22:45,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:22:45,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684464304] [2022-02-15 12:22:45,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:22:45,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:22:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:22:45,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:45,580 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:22:45,580 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684464304] [2022-02-15 12:22:45,580 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684464304] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:22:45,580 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265200588] [2022-02-15 12:22:45,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:22:45,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:22:45,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:22:45,581 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) [2022-02-15 12:22:45,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-02-15 12:22:45,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-15 12:22:45,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:22:45,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:22:45,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:22:46,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:46,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:22:46,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:46,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265200588] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:22:46,452 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:22:46,452 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:22:46,452 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334692552] [2022-02-15 12:22:46,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:22:46,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:22:46,452 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:22:46,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:22:46,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:22:46,453 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) [2022-02-15 12:22:49,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:22:49,660 INFO L93 Difference]: Finished difference Result 19613 states and 58886 transitions. [2022-02-15 12:22:49,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-02-15 12:22:49,660 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 [2022-02-15 12:22:49,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:22:49,699 INFO L225 Difference]: With dead ends: 19613 [2022-02-15 12:22:49,699 INFO L226 Difference]: Without dead ends: 19473 [2022-02-15 12:22:49,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4382 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1988, Invalid=10668, Unknown=0, NotChecked=0, Total=12656 [2022-02-15 12:22:49,701 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 624 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 2756 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:22:49,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 2756 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1509 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:22:49,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19473 states. [2022-02-15 12:22:49,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19473 to 12769. [2022-02-15 12:22:49,938 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) [2022-02-15 12:22:50,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12769 states to 12769 states and 38889 transitions. [2022-02-15 12:22:50,063 INFO L78 Accepts]: Start accepts. Automaton has 12769 states and 38889 transitions. Word has length 70 [2022-02-15 12:22:50,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:22:50,064 INFO L470 AbstractCegarLoop]: Abstraction has 12769 states and 38889 transitions. [2022-02-15 12:22:50,064 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) [2022-02-15 12:22:50,064 INFO L276 IsEmpty]: Start isEmpty. Operand 12769 states and 38889 transitions. [2022-02-15 12:22:50,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:22:50,080 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:22:50,080 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] [2022-02-15 12:22:50,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-02-15 12:22:50,281 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 [2022-02-15 12:22:50,281 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:22:50,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:22:50,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1832125171, now seen corresponding path program 94 times [2022-02-15 12:22:50,281 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:22:50,281 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402435386] [2022-02-15 12:22:50,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:22:50,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:22:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:22:50,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:50,408 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:22:50,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402435386] [2022-02-15 12:22:50,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402435386] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:22:50,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484365651] [2022-02-15 12:22:50,408 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:22:50,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:22:50,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:22:50,410 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) [2022-02-15 12:22:50,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-02-15 12:22:50,512 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:22:50,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:22:50,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-15 12:22:50,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:22:50,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:50,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:22:51,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:51,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484365651] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:22:51,177 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:22:51,177 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:22:51,177 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146936180] [2022-02-15 12:22:51,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:22:51,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:22:51,177 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:22:51,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:22:51,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:22:51,178 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) [2022-02-15 12:22:52,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:22:52,999 INFO L93 Difference]: Finished difference Result 17008 states and 51265 transitions. [2022-02-15 12:22:52,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-15 12:22:52,999 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 [2022-02-15 12:22:53,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:22:53,032 INFO L225 Difference]: With dead ends: 17008 [2022-02-15 12:22:53,032 INFO L226 Difference]: Without dead ends: 16868 [2022-02-15 12:22:53,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2880 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1488, Invalid=7824, Unknown=0, NotChecked=0, Total=9312 [2022-02-15 12:22:53,034 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 548 mSDsluCounter, 2349 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 2419 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:22:53,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [548 Valid, 2419 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:22:53,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16868 states. [2022-02-15 12:22:53,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16868 to 13465. [2022-02-15 12:22:53,290 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) [2022-02-15 12:22:53,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13465 states to 13465 states and 41079 transitions. [2022-02-15 12:22:53,319 INFO L78 Accepts]: Start accepts. Automaton has 13465 states and 41079 transitions. Word has length 70 [2022-02-15 12:22:53,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:22:53,320 INFO L470 AbstractCegarLoop]: Abstraction has 13465 states and 41079 transitions. [2022-02-15 12:22:53,320 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) [2022-02-15 12:22:53,320 INFO L276 IsEmpty]: Start isEmpty. Operand 13465 states and 41079 transitions. [2022-02-15 12:22:53,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:22:53,340 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:22:53,340 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] [2022-02-15 12:22:53,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-02-15 12:22:53,541 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 [2022-02-15 12:22:53,542 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:22:53,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:22:53,542 INFO L85 PathProgramCache]: Analyzing trace with hash -480808329, now seen corresponding path program 95 times [2022-02-15 12:22:53,543 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:22:53,543 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522515142] [2022-02-15 12:22:53,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:22:53,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:22:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:22:53,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:53,661 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:22:53,661 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522515142] [2022-02-15 12:22:53,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522515142] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:22:53,661 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915258501] [2022-02-15 12:22:53,662 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:22:53,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:22:53,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:22:53,663 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) [2022-02-15 12:22:53,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-02-15 12:22:53,765 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 12:22:53,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:22:53,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:22:53,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:22:54,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:54,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:22:54,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:54,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915258501] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:22:54,413 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:22:54,413 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:22:54,413 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382256735] [2022-02-15 12:22:54,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:22:54,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:22:54,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:22:54,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:22:54,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=916, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:22:54,414 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) [2022-02-15 12:22:55,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:22:55,599 INFO L93 Difference]: Finished difference Result 16291 states and 49496 transitions. [2022-02-15 12:22:55,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-15 12:22:55,600 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 [2022-02-15 12:22:55,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:22:55,633 INFO L225 Difference]: With dead ends: 16291 [2022-02-15 12:22:55,633 INFO L226 Difference]: Without dead ends: 16187 [2022-02-15 12:22:55,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1299 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=979, Invalid=3991, Unknown=0, NotChecked=0, Total=4970 [2022-02-15 12:22:55,634 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 581 mSDsluCounter, 2464 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 2506 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:22:55,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 2506 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:22:55,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16187 states. [2022-02-15 12:22:55,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16187 to 11569. [2022-02-15 12:22:55,811 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) [2022-02-15 12:22:55,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11569 states to 11569 states and 35197 transitions. [2022-02-15 12:22:55,836 INFO L78 Accepts]: Start accepts. Automaton has 11569 states and 35197 transitions. Word has length 70 [2022-02-15 12:22:55,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:22:55,836 INFO L470 AbstractCegarLoop]: Abstraction has 11569 states and 35197 transitions. [2022-02-15 12:22:55,836 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) [2022-02-15 12:22:55,836 INFO L276 IsEmpty]: Start isEmpty. Operand 11569 states and 35197 transitions. [2022-02-15 12:22:55,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:22:55,852 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:22:55,852 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] [2022-02-15 12:22:55,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-02-15 12:22:56,053 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 [2022-02-15 12:22:56,054 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:22:56,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:22:56,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1145842415, now seen corresponding path program 96 times [2022-02-15 12:22:56,054 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:22:56,054 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586254442] [2022-02-15 12:22:56,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:22:56,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:22:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:22:56,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:56,175 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:22:56,175 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586254442] [2022-02-15 12:22:56,175 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586254442] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:22:56,175 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619439816] [2022-02-15 12:22:56,175 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:22:56,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:22:56,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:22:56,176 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) [2022-02-15 12:22:56,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-02-15 12:22:56,278 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-15 12:22:56,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:22:56,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:22:56,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:22:56,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:56,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:22:57,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:22:57,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619439816] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:22:57,072 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:22:57,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:22:57,072 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340661418] [2022-02-15 12:22:57,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:22:57,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:22:57,073 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:22:57,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:22:57,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:22:57,073 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) [2022-02-15 12:22:59,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:22:59,551 INFO L93 Difference]: Finished difference Result 17131 states and 51397 transitions. [2022-02-15 12:22:59,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-15 12:22:59,551 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 [2022-02-15 12:22:59,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:22:59,586 INFO L225 Difference]: With dead ends: 17131 [2022-02-15 12:22:59,586 INFO L226 Difference]: Without dead ends: 17005 [2022-02-15 12:22:59,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3029 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1312, Invalid=7808, Unknown=0, NotChecked=0, Total=9120 [2022-02-15 12:22:59,587 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 587 mSDsluCounter, 1877 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:22:59,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 1952 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:22:59,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17005 states. [2022-02-15 12:22:59,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17005 to 11629. [2022-02-15 12:22:59,798 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) [2022-02-15 12:22:59,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11629 states to 11629 states and 35374 transitions. [2022-02-15 12:22:59,823 INFO L78 Accepts]: Start accepts. Automaton has 11629 states and 35374 transitions. Word has length 70 [2022-02-15 12:22:59,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:22:59,823 INFO L470 AbstractCegarLoop]: Abstraction has 11629 states and 35374 transitions. [2022-02-15 12:22:59,824 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) [2022-02-15 12:22:59,824 INFO L276 IsEmpty]: Start isEmpty. Operand 11629 states and 35374 transitions. [2022-02-15 12:22:59,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:22:59,840 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:22:59,840 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] [2022-02-15 12:22:59,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-02-15 12:23:00,040 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 [2022-02-15 12:23:00,040 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:23:00,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:23:00,041 INFO L85 PathProgramCache]: Analyzing trace with hash -566247181, now seen corresponding path program 97 times [2022-02-15 12:23:00,041 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:23:00,041 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471678162] [2022-02-15 12:23:00,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:23:00,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:23:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:23:00,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:00,230 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:23:00,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471678162] [2022-02-15 12:23:00,230 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471678162] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:23:00,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551326690] [2022-02-15 12:23:00,230 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:23:00,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:23:00,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:23:00,231 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) [2022-02-15 12:23:00,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-02-15 12:23:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:23:00,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:23:00,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:23:00,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:00,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:23:01,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:01,095 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551326690] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:23:01,095 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:23:01,095 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:23:01,095 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414531761] [2022-02-15 12:23:01,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:23:01,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:23:01,095 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:23:01,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:23:01,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=976, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:23:01,096 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) [2022-02-15 12:23:02,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:23:02,756 INFO L93 Difference]: Finished difference Result 16449 states and 49459 transitions. [2022-02-15 12:23:02,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-15 12:23:02,756 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 [2022-02-15 12:23:02,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:23:02,787 INFO L225 Difference]: With dead ends: 16449 [2022-02-15 12:23:02,788 INFO L226 Difference]: Without dead ends: 16315 [2022-02-15 12:23:02,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1841 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=864, Invalid=5142, Unknown=0, NotChecked=0, Total=6006 [2022-02-15 12:23:02,789 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 461 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:23:02,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 2118 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:23:02,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16315 states. [2022-02-15 12:23:02,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16315 to 11629. [2022-02-15 12:23:02,973 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) [2022-02-15 12:23:02,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11629 states to 11629 states and 35378 transitions. [2022-02-15 12:23:02,998 INFO L78 Accepts]: Start accepts. Automaton has 11629 states and 35378 transitions. Word has length 70 [2022-02-15 12:23:02,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:23:02,998 INFO L470 AbstractCegarLoop]: Abstraction has 11629 states and 35378 transitions. [2022-02-15 12:23:02,998 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) [2022-02-15 12:23:02,998 INFO L276 IsEmpty]: Start isEmpty. Operand 11629 states and 35378 transitions. [2022-02-15 12:23:03,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:23:03,014 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:23:03,015 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] [2022-02-15 12:23:03,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-02-15 12:23:03,215 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 [2022-02-15 12:23:03,215 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:23:03,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:23:03,215 INFO L85 PathProgramCache]: Analyzing trace with hash 45657325, now seen corresponding path program 98 times [2022-02-15 12:23:03,216 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:23:03,216 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560037371] [2022-02-15 12:23:03,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:23:03,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:23:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:23:03,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:03,375 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:23:03,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560037371] [2022-02-15 12:23:03,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560037371] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:23:03,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45560630] [2022-02-15 12:23:03,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:23:03,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:23:03,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:23:03,379 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) [2022-02-15 12:23:03,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-02-15 12:23:03,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:23:03,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:23:03,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:23:03,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:23:03,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:03,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:23:04,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:04,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45560630] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:23:04,305 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:23:04,305 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:23:04,305 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575755238] [2022-02-15 12:23:04,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:23:04,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:23:04,305 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:23:04,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:23:04,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:23:04,306 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) [2022-02-15 12:23:06,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:23:06,580 INFO L93 Difference]: Finished difference Result 17464 states and 52615 transitions. [2022-02-15 12:23:06,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-15 12:23:06,580 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 [2022-02-15 12:23:06,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:23:06,614 INFO L225 Difference]: With dead ends: 17464 [2022-02-15 12:23:06,614 INFO L226 Difference]: Without dead ends: 17338 [2022-02-15 12:23:06,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2726 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1223, Invalid=7707, Unknown=0, NotChecked=0, Total=8930 [2022-02-15 12:23:06,616 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 439 mSDsluCounter, 3031 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 3055 SdHoareTripleChecker+Invalid, 1682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:23:06,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 3055 Invalid, 1682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:23:06,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17338 states. [2022-02-15 12:23:06,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17338 to 11665. [2022-02-15 12:23:06,815 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) [2022-02-15 12:23:06,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11665 states to 11665 states and 35485 transitions. [2022-02-15 12:23:06,840 INFO L78 Accepts]: Start accepts. Automaton has 11665 states and 35485 transitions. Word has length 70 [2022-02-15 12:23:06,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:23:06,840 INFO L470 AbstractCegarLoop]: Abstraction has 11665 states and 35485 transitions. [2022-02-15 12:23:06,840 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) [2022-02-15 12:23:06,841 INFO L276 IsEmpty]: Start isEmpty. Operand 11665 states and 35485 transitions. [2022-02-15 12:23:06,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:23:06,857 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:23:06,857 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] [2022-02-15 12:23:06,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2022-02-15 12:23:07,057 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 [2022-02-15 12:23:07,058 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:23:07,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:23:07,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1539313369, now seen corresponding path program 99 times [2022-02-15 12:23:07,058 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:23:07,058 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953664910] [2022-02-15 12:23:07,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:23:07,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:23:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:23:07,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:07,190 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:23:07,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953664910] [2022-02-15 12:23:07,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953664910] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:23:07,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432020354] [2022-02-15 12:23:07,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:23:07,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:23:07,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:23:07,191 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) [2022-02-15 12:23:07,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-02-15 12:23:07,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-15 12:23:07,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:23:07,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:23:07,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:23:07,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:07,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:23:08,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:08,102 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432020354] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:23:08,102 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:23:08,102 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:23:08,102 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768727834] [2022-02-15 12:23:08,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:23:08,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:23:08,102 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:23:08,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:23:08,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:23:08,103 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) [2022-02-15 12:23:10,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:23:10,239 INFO L93 Difference]: Finished difference Result 17251 states and 52120 transitions. [2022-02-15 12:23:10,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-15 12:23:10,239 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 [2022-02-15 12:23:10,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:23:10,273 INFO L225 Difference]: With dead ends: 17251 [2022-02-15 12:23:10,273 INFO L226 Difference]: Without dead ends: 17095 [2022-02-15 12:23:10,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2571 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1214, Invalid=7342, Unknown=0, NotChecked=0, Total=8556 [2022-02-15 12:23:10,274 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 387 mSDsluCounter, 2622 mSDsCounter, 0 mSdLazyCounter, 1379 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 2664 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:23:10,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 2664 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1379 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:23:10,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17095 states. [2022-02-15 12:23:10,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17095 to 11649. [2022-02-15 12:23:10,468 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) [2022-02-15 12:23:10,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11649 states to 11649 states and 35437 transitions. [2022-02-15 12:23:10,492 INFO L78 Accepts]: Start accepts. Automaton has 11649 states and 35437 transitions. Word has length 70 [2022-02-15 12:23:10,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:23:10,492 INFO L470 AbstractCegarLoop]: Abstraction has 11649 states and 35437 transitions. [2022-02-15 12:23:10,492 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) [2022-02-15 12:23:10,492 INFO L276 IsEmpty]: Start isEmpty. Operand 11649 states and 35437 transitions. [2022-02-15 12:23:10,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:23:10,508 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:23:10,508 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, 1, 1, 1, 1] [2022-02-15 12:23:10,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2022-02-15 12:23:10,709 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 [2022-02-15 12:23:10,709 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:23:10,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:23:10,709 INFO L85 PathProgramCache]: Analyzing trace with hash 90004025, now seen corresponding path program 100 times [2022-02-15 12:23:10,709 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:23:10,709 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136467583] [2022-02-15 12:23:10,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:23:10,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:23:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:23:10,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:10,831 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:23:10,831 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136467583] [2022-02-15 12:23:10,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136467583] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:23:10,831 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889160190] [2022-02-15 12:23:10,831 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:23:10,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:23:10,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:23:10,832 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) [2022-02-15 12:23:10,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-02-15 12:23:10,937 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:23:10,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:23:10,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-15 12:23:10,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:23:11,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:11,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:23:11,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:11,617 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889160190] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:23:11,617 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:23:11,617 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2022-02-15 12:23:11,617 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533571746] [2022-02-15 12:23:11,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:23:11,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 12:23:11,618 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:23:11,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 12:23:11,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2022-02-15 12:23:11,618 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) [2022-02-15 12:23:12,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:23:12,623 INFO L93 Difference]: Finished difference Result 13738 states and 41509 transitions. [2022-02-15 12:23:12,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-15 12:23:12,623 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 [2022-02-15 12:23:12,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:23:12,648 INFO L225 Difference]: With dead ends: 13738 [2022-02-15 12:23:12,648 INFO L226 Difference]: Without dead ends: 13574 [2022-02-15 12:23:12,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=581, Invalid=3579, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 12:23:12,649 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 344 mSDsluCounter, 2499 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:23:12,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 2526 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:23:12,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13574 states. [2022-02-15 12:23:12,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13574 to 11701. [2022-02-15 12:23:12,803 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) [2022-02-15 12:23:12,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11701 states to 11701 states and 35584 transitions. [2022-02-15 12:23:12,826 INFO L78 Accepts]: Start accepts. Automaton has 11701 states and 35584 transitions. Word has length 70 [2022-02-15 12:23:12,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:23:12,827 INFO L470 AbstractCegarLoop]: Abstraction has 11701 states and 35584 transitions. [2022-02-15 12:23:12,827 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) [2022-02-15 12:23:12,827 INFO L276 IsEmpty]: Start isEmpty. Operand 11701 states and 35584 transitions. [2022-02-15 12:23:12,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:23:12,842 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:23:12,842 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] [2022-02-15 12:23:12,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-02-15 12:23:13,042 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 [2022-02-15 12:23:13,043 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:23:13,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:23:13,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1052816633, now seen corresponding path program 101 times [2022-02-15 12:23:13,043 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:23:13,043 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018323862] [2022-02-15 12:23:13,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:23:13,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:23:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:23:13,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:13,177 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:23:13,177 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018323862] [2022-02-15 12:23:13,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018323862] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:23:13,177 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932731938] [2022-02-15 12:23:13,177 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:23:13,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:23:13,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:23:13,178 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) [2022-02-15 12:23:13,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-02-15 12:23:13,285 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 12:23:13,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:23:13,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:23:13,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:23:13,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:13,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:23:13,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:13,967 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932731938] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:23:13,967 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:23:13,967 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:23:13,967 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010008050] [2022-02-15 12:23:13,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:23:13,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:23:13,968 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:23:13,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:23:13,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:23:13,968 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) [2022-02-15 12:23:15,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:23:15,673 INFO L93 Difference]: Finished difference Result 16211 states and 49160 transitions. [2022-02-15 12:23:15,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-15 12:23:15,673 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 [2022-02-15 12:23:15,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:23:15,703 INFO L225 Difference]: With dead ends: 16211 [2022-02-15 12:23:15,703 INFO L226 Difference]: Without dead ends: 16125 [2022-02-15 12:23:15,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2396 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1475, Invalid=6715, Unknown=0, NotChecked=0, Total=8190 [2022-02-15 12:23:15,704 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 415 mSDsluCounter, 2487 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:23:15,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 2548 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:23:15,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16125 states. [2022-02-15 12:23:15,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16125 to 12377. [2022-02-15 12:23:15,902 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) [2022-02-15 12:23:15,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12377 states to 12377 states and 37811 transitions. [2022-02-15 12:23:15,930 INFO L78 Accepts]: Start accepts. Automaton has 12377 states and 37811 transitions. Word has length 70 [2022-02-15 12:23:15,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:23:15,930 INFO L470 AbstractCegarLoop]: Abstraction has 12377 states and 37811 transitions. [2022-02-15 12:23:15,930 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) [2022-02-15 12:23:15,930 INFO L276 IsEmpty]: Start isEmpty. Operand 12377 states and 37811 transitions. [2022-02-15 12:23:15,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:23:15,949 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:23:15,949 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] [2022-02-15 12:23:15,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-02-15 12:23:16,149 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 [2022-02-15 12:23:16,150 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:23:16,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:23:16,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1065260363, now seen corresponding path program 102 times [2022-02-15 12:23:16,150 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:23:16,150 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145158728] [2022-02-15 12:23:16,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:23:16,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:23:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:23:16,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:16,273 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:23:16,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145158728] [2022-02-15 12:23:16,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145158728] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:23:16,274 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694949866] [2022-02-15 12:23:16,274 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:23:16,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:23:16,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:23:16,275 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) [2022-02-15 12:23:16,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-02-15 12:23:16,383 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-15 12:23:16,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:23:16,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:23:16,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:23:16,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:16,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:23:17,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:17,139 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694949866] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:23:17,140 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:23:17,140 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:23:17,140 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307921863] [2022-02-15 12:23:17,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:23:17,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:23:17,140 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:23:17,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:23:17,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=972, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:23:17,140 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) [2022-02-15 12:23:20,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:23:20,013 INFO L93 Difference]: Finished difference Result 21245 states and 64502 transitions. [2022-02-15 12:23:20,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-15 12:23:20,014 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 [2022-02-15 12:23:20,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:23:20,058 INFO L225 Difference]: With dead ends: 21245 [2022-02-15 12:23:20,058 INFO L226 Difference]: Without dead ends: 21105 [2022-02-15 12:23:20,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4045 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1827, Invalid=9945, Unknown=0, NotChecked=0, Total=11772 [2022-02-15 12:23:20,059 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 616 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 2447 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:23:20,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 2447 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:23:20,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21105 states. [2022-02-15 12:23:20,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21105 to 12685. [2022-02-15 12:23:20,295 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) [2022-02-15 12:23:20,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12685 states to 12685 states and 38746 transitions. [2022-02-15 12:23:20,321 INFO L78 Accepts]: Start accepts. Automaton has 12685 states and 38746 transitions. Word has length 70 [2022-02-15 12:23:20,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:23:20,321 INFO L470 AbstractCegarLoop]: Abstraction has 12685 states and 38746 transitions. [2022-02-15 12:23:20,321 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) [2022-02-15 12:23:20,321 INFO L276 IsEmpty]: Start isEmpty. Operand 12685 states and 38746 transitions. [2022-02-15 12:23:20,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:23:20,339 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:23:20,339 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] [2022-02-15 12:23:20,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-02-15 12:23:20,551 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 [2022-02-15 12:23:20,552 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:23:20,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:23:20,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1448736071, now seen corresponding path program 103 times [2022-02-15 12:23:20,552 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:23:20,552 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060129286] [2022-02-15 12:23:20,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:23:20,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:23:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:23:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:20,691 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:23:20,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060129286] [2022-02-15 12:23:20,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060129286] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:23:20,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676161293] [2022-02-15 12:23:20,691 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:23:20,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:23:20,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:23:20,692 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) [2022-02-15 12:23:20,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-02-15 12:23:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:23:20,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:23:20,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:23:21,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:21,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:23:21,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:21,591 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676161293] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:23:21,591 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:23:21,591 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:23:21,591 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885931756] [2022-02-15 12:23:21,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:23:21,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:23:21,591 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:23:21,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:23:21,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=994, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:23:21,592 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) [2022-02-15 12:23:23,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:23:23,943 INFO L93 Difference]: Finished difference Result 18355 states and 55702 transitions. [2022-02-15 12:23:23,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-15 12:23:23,943 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 [2022-02-15 12:23:23,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:23:23,977 INFO L225 Difference]: With dead ends: 18355 [2022-02-15 12:23:23,977 INFO L226 Difference]: Without dead ends: 18193 [2022-02-15 12:23:23,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2962 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1311, Invalid=8391, Unknown=0, NotChecked=0, Total=9702 [2022-02-15 12:23:23,979 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 418 mSDsluCounter, 2981 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:23:23,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 3019 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:23:23,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18193 states. [2022-02-15 12:23:24,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18193 to 12725. [2022-02-15 12:23:24,186 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) [2022-02-15 12:23:24,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12725 states to 12725 states and 38868 transitions. [2022-02-15 12:23:24,213 INFO L78 Accepts]: Start accepts. Automaton has 12725 states and 38868 transitions. Word has length 70 [2022-02-15 12:23:24,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:23:24,213 INFO L470 AbstractCegarLoop]: Abstraction has 12725 states and 38868 transitions. [2022-02-15 12:23:24,213 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) [2022-02-15 12:23:24,214 INFO L276 IsEmpty]: Start isEmpty. Operand 12725 states and 38868 transitions. [2022-02-15 12:23:24,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:23:24,232 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:23:24,232 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] [2022-02-15 12:23:24,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-02-15 12:23:24,432 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 [2022-02-15 12:23:24,433 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:23:24,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:23:24,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1493082771, now seen corresponding path program 104 times [2022-02-15 12:23:24,433 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:23:24,433 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824641863] [2022-02-15 12:23:24,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:23:24,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:23:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:23:24,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:24,571 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:23:24,571 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824641863] [2022-02-15 12:23:24,572 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824641863] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:23:24,572 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596819708] [2022-02-15 12:23:24,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:23:24,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:23:24,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:23:24,573 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) [2022-02-15 12:23:24,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-02-15 12:23:24,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:23:24,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:23:24,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:23:24,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:23:24,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:24,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:23:25,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:25,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596819708] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:23:25,508 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:23:25,508 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:23:25,508 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440270381] [2022-02-15 12:23:25,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:23:25,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:23:25,508 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:23:25,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:23:25,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:23:25,508 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) [2022-02-15 12:23:27,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:23:27,556 INFO L93 Difference]: Finished difference Result 18145 states and 55212 transitions. [2022-02-15 12:23:27,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-15 12:23:27,557 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 [2022-02-15 12:23:27,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:23:27,593 INFO L225 Difference]: With dead ends: 18145 [2022-02-15 12:23:27,593 INFO L226 Difference]: Without dead ends: 17966 [2022-02-15 12:23:27,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2450 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1205, Invalid=7167, Unknown=0, NotChecked=0, Total=8372 [2022-02-15 12:23:27,594 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 443 mSDsluCounter, 2462 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:23:27,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 2503 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:23:27,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17966 states. [2022-02-15 12:23:27,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17966 to 12709. [2022-02-15 12:23:27,804 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) [2022-02-15 12:23:27,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12709 states to 12709 states and 38816 transitions. [2022-02-15 12:23:27,832 INFO L78 Accepts]: Start accepts. Automaton has 12709 states and 38816 transitions. Word has length 70 [2022-02-15 12:23:27,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:23:27,832 INFO L470 AbstractCegarLoop]: Abstraction has 12709 states and 38816 transitions. [2022-02-15 12:23:27,832 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) [2022-02-15 12:23:27,832 INFO L276 IsEmpty]: Start isEmpty. Operand 12709 states and 38816 transitions. [2022-02-15 12:23:27,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:23:27,851 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:23:27,851 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] [2022-02-15 12:23:27,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-02-15 12:23:28,052 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 [2022-02-15 12:23:28,053 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:23:28,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:23:28,053 INFO L85 PathProgramCache]: Analyzing trace with hash 350262113, now seen corresponding path program 105 times [2022-02-15 12:23:28,053 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:23:28,053 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365545867] [2022-02-15 12:23:28,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:23:28,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:23:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:23:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:28,179 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:23:28,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365545867] [2022-02-15 12:23:28,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365545867] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:23:28,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084399784] [2022-02-15 12:23:28,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:23:28,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:23:28,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:23:28,180 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) [2022-02-15 12:23:28,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-02-15 12:23:28,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-15 12:23:28,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:23:28,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:23:28,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:23:28,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:28,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:23:29,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:29,098 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084399784] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:23:29,098 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:23:29,098 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:23:29,098 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660779803] [2022-02-15 12:23:29,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:23:29,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:23:29,098 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:23:29,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:23:29,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:23:29,099 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) [2022-02-15 12:23:32,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:23:32,764 INFO L93 Difference]: Finished difference Result 19869 states and 60294 transitions. [2022-02-15 12:23:32,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-02-15 12:23:32,764 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 [2022-02-15 12:23:32,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:23:32,802 INFO L225 Difference]: With dead ends: 19869 [2022-02-15 12:23:32,802 INFO L226 Difference]: Without dead ends: 19713 [2022-02-15 12:23:32,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6585 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3046, Invalid=15044, Unknown=0, NotChecked=0, Total=18090 [2022-02-15 12:23:32,805 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 640 mSDsluCounter, 2514 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:23:32,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 2583 Invalid, 1594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:23:32,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19713 states. [2022-02-15 12:23:33,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19713 to 12725. [2022-02-15 12:23:33,075 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) [2022-02-15 12:23:33,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12725 states to 12725 states and 38868 transitions. [2022-02-15 12:23:33,102 INFO L78 Accepts]: Start accepts. Automaton has 12725 states and 38868 transitions. Word has length 70 [2022-02-15 12:23:33,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:23:33,102 INFO L470 AbstractCegarLoop]: Abstraction has 12725 states and 38868 transitions. [2022-02-15 12:23:33,102 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) [2022-02-15 12:23:33,102 INFO L276 IsEmpty]: Start isEmpty. Operand 12725 states and 38868 transitions. [2022-02-15 12:23:33,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:23:33,121 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:23:33,121 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] [2022-02-15 12:23:33,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2022-02-15 12:23:33,321 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 [2022-02-15 12:23:33,321 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:23:33,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:23:33,322 INFO L85 PathProgramCache]: Analyzing trace with hash 337818383, now seen corresponding path program 106 times [2022-02-15 12:23:33,322 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:23:33,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148636438] [2022-02-15 12:23:33,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:23:33,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:23:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:23:33,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:33,447 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:23:33,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148636438] [2022-02-15 12:23:33,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148636438] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:23:33,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903480286] [2022-02-15 12:23:33,447 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:23:33,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:23:33,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:23:33,449 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) [2022-02-15 12:23:33,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-02-15 12:23:33,558 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:23:33,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:23:33,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-15 12:23:33,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:23:33,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:33,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:23:34,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:34,200 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903480286] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:23:34,200 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:23:34,200 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2022-02-15 12:23:34,200 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940628130] [2022-02-15 12:23:34,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:23:34,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 12:23:34,200 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:23:34,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 12:23:34,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2022-02-15 12:23:34,201 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) [2022-02-15 12:23:36,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:23:36,427 INFO L93 Difference]: Finished difference Result 17204 states and 51997 transitions. [2022-02-15 12:23:36,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-15 12:23:36,427 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 [2022-02-15 12:23:36,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:23:36,460 INFO L225 Difference]: With dead ends: 17204 [2022-02-15 12:23:36,460 INFO L226 Difference]: Without dead ends: 17088 [2022-02-15 12:23:36,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3051 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1531, Invalid=8171, Unknown=0, NotChecked=0, Total=9702 [2022-02-15 12:23:36,462 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 433 mSDsluCounter, 3722 mSDsCounter, 0 mSdLazyCounter, 2075 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 3769 SdHoareTripleChecker+Invalid, 2154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:23:36,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 3769 Invalid, 2154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2075 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:23:36,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17088 states. [2022-02-15 12:23:36,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17088 to 13025. [2022-02-15 12:23:36,725 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) [2022-02-15 12:23:36,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13025 states to 13025 states and 39793 transitions. [2022-02-15 12:23:36,755 INFO L78 Accepts]: Start accepts. Automaton has 13025 states and 39793 transitions. Word has length 70 [2022-02-15 12:23:36,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:23:36,755 INFO L470 AbstractCegarLoop]: Abstraction has 13025 states and 39793 transitions. [2022-02-15 12:23:36,755 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) [2022-02-15 12:23:36,755 INFO L276 IsEmpty]: Start isEmpty. Operand 13025 states and 39793 transitions. [2022-02-15 12:23:36,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:23:36,776 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:23:36,776 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] [2022-02-15 12:23:36,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2022-02-15 12:23:36,976 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 [2022-02-15 12:23:36,976 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:23:36,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:23:36,977 INFO L85 PathProgramCache]: Analyzing trace with hash -209379389, now seen corresponding path program 107 times [2022-02-15 12:23:36,977 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:23:36,977 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320079286] [2022-02-15 12:23:36,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:23:36,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:23:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:23:37,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:37,105 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:23:37,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320079286] [2022-02-15 12:23:37,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320079286] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:23:37,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663394246] [2022-02-15 12:23:37,105 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:23:37,105 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:23:37,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:23:37,106 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) [2022-02-15 12:23:37,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-02-15 12:23:37,216 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 12:23:37,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:23:37,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:23:37,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:23:37,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:37,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:23:37,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:37,906 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663394246] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:23:37,906 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:23:37,906 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:23:37,906 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739274999] [2022-02-15 12:23:37,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:23:37,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:23:37,915 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:23:37,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:23:37,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=924, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:23:37,916 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) [2022-02-15 12:23:39,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:23:39,218 INFO L93 Difference]: Finished difference Result 16384 states and 49590 transitions. [2022-02-15 12:23:39,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-15 12:23:39,218 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 [2022-02-15 12:23:39,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:23:39,249 INFO L225 Difference]: With dead ends: 16384 [2022-02-15 12:23:39,249 INFO L226 Difference]: Without dead ends: 16301 [2022-02-15 12:23:39,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1495 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=971, Invalid=4579, Unknown=0, NotChecked=0, Total=5550 [2022-02-15 12:23:39,250 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 401 mSDsluCounter, 1927 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:23:39,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 1999 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:23:39,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16301 states. [2022-02-15 12:23:39,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16301 to 12957. [2022-02-15 12:23:39,511 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) [2022-02-15 12:23:39,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12957 states to 12957 states and 39578 transitions. [2022-02-15 12:23:39,539 INFO L78 Accepts]: Start accepts. Automaton has 12957 states and 39578 transitions. Word has length 70 [2022-02-15 12:23:39,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:23:39,539 INFO L470 AbstractCegarLoop]: Abstraction has 12957 states and 39578 transitions. [2022-02-15 12:23:39,539 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) [2022-02-15 12:23:39,539 INFO L276 IsEmpty]: Start isEmpty. Operand 12957 states and 39578 transitions. [2022-02-15 12:23:39,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:23:39,558 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:23:39,558 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] [2022-02-15 12:23:39,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-02-15 12:23:39,758 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 [2022-02-15 12:23:39,758 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:23:39,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:23:39,759 INFO L85 PathProgramCache]: Analyzing trace with hash -165032689, now seen corresponding path program 108 times [2022-02-15 12:23:39,759 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:23:39,759 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380943493] [2022-02-15 12:23:39,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:23:39,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:23:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:23:39,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:39,880 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:23:39,880 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380943493] [2022-02-15 12:23:39,880 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380943493] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:23:39,880 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711457513] [2022-02-15 12:23:39,880 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:23:39,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:23:39,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:23:39,881 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) [2022-02-15 12:23:39,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-02-15 12:23:39,993 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-15 12:23:39,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:23:39,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:23:39,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:23:40,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:40,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:23:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:40,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711457513] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:23:40,687 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:23:40,687 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:23:40,687 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815287788] [2022-02-15 12:23:40,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:23:40,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:23:40,687 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:23:40,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:23:40,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:23:40,687 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) [2022-02-15 12:23:41,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:23:41,993 INFO L93 Difference]: Finished difference Result 16263 states and 49223 transitions. [2022-02-15 12:23:41,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-15 12:23:41,993 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 [2022-02-15 12:23:41,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:23:42,025 INFO L225 Difference]: With dead ends: 16263 [2022-02-15 12:23:42,025 INFO L226 Difference]: Without dead ends: 16144 [2022-02-15 12:23:42,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1351 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=914, Invalid=4198, Unknown=0, NotChecked=0, Total=5112 [2022-02-15 12:23:42,026 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 365 mSDsluCounter, 2614 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 2630 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:23:42,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 2630 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:23:42,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16144 states. [2022-02-15 12:23:42,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16144 to 12821. [2022-02-15 12:23:42,224 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) [2022-02-15 12:23:42,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12821 states to 12821 states and 39144 transitions. [2022-02-15 12:23:42,349 INFO L78 Accepts]: Start accepts. Automaton has 12821 states and 39144 transitions. Word has length 70 [2022-02-15 12:23:42,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:23:42,349 INFO L470 AbstractCegarLoop]: Abstraction has 12821 states and 39144 transitions. [2022-02-15 12:23:42,349 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) [2022-02-15 12:23:42,349 INFO L276 IsEmpty]: Start isEmpty. Operand 12821 states and 39144 transitions. [2022-02-15 12:23:42,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:23:42,367 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:23:42,367 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] [2022-02-15 12:23:42,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-02-15 12:23:42,567 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 [2022-02-15 12:23:42,568 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:23:42,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:23:42,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1320297077, now seen corresponding path program 109 times [2022-02-15 12:23:42,568 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:23:42,568 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103139979] [2022-02-15 12:23:42,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:23:42,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:23:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:23:42,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:42,714 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:23:42,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103139979] [2022-02-15 12:23:42,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103139979] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:23:42,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846652621] [2022-02-15 12:23:42,714 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:23:42,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:23:42,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:23:42,715 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) [2022-02-15 12:23:42,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-02-15 12:23:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:23:42,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:23:42,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:23:43,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:43,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:23:43,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:43,572 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846652621] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:23:43,572 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:23:43,573 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:23:43,573 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900779292] [2022-02-15 12:23:43,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:23:43,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:23:43,573 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:23:43,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:23:43,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:23:43,573 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) [2022-02-15 12:23:47,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:23:47,914 INFO L93 Difference]: Finished difference Result 22213 states and 67364 transitions. [2022-02-15 12:23:47,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-02-15 12:23:47,914 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 [2022-02-15 12:23:47,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:23:47,955 INFO L225 Difference]: With dead ends: 22213 [2022-02-15 12:23:47,955 INFO L226 Difference]: Without dead ends: 22073 [2022-02-15 12:23:47,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7399 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3723, Invalid=15737, Unknown=0, NotChecked=0, Total=19460 [2022-02-15 12:23:47,957 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 793 mSDsluCounter, 2044 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 2128 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:23:47,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 2128 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1185 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:23:47,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22073 states. [2022-02-15 12:23:48,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22073 to 13585. [2022-02-15 12:23:48,200 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) [2022-02-15 12:23:48,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13585 states to 13585 states and 41405 transitions. [2022-02-15 12:23:48,228 INFO L78 Accepts]: Start accepts. Automaton has 13585 states and 41405 transitions. Word has length 70 [2022-02-15 12:23:48,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:23:48,228 INFO L470 AbstractCegarLoop]: Abstraction has 13585 states and 41405 transitions. [2022-02-15 12:23:48,228 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) [2022-02-15 12:23:48,228 INFO L276 IsEmpty]: Start isEmpty. Operand 13585 states and 41405 transitions. [2022-02-15 12:23:48,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:23:48,249 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:23:48,250 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] [2022-02-15 12:23:48,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2022-02-15 12:23:48,450 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 [2022-02-15 12:23:48,450 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:23:48,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:23:48,450 INFO L85 PathProgramCache]: Analyzing trace with hash -2086967501, now seen corresponding path program 110 times [2022-02-15 12:23:48,450 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:23:48,450 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291406664] [2022-02-15 12:23:48,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:23:48,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:23:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:23:48,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:48,579 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:23:48,579 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291406664] [2022-02-15 12:23:48,579 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291406664] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:23:48,579 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656710994] [2022-02-15 12:23:48,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:23:48,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:23:48,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:23:48,580 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) [2022-02-15 12:23:48,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-02-15 12:23:48,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:23:48,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:23:48,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:23:48,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:23:48,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:48,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:23:49,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:49,457 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656710994] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:23:49,457 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:23:49,457 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:23:49,457 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400649644] [2022-02-15 12:23:49,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:23:49,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:23:49,457 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:23:49,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:23:49,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:23:49,458 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) [2022-02-15 12:23:50,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:23:50,818 INFO L93 Difference]: Finished difference Result 18264 states and 55207 transitions. [2022-02-15 12:23:50,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-15 12:23:50,819 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 [2022-02-15 12:23:50,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:23:50,855 INFO L225 Difference]: With dead ends: 18264 [2022-02-15 12:23:50,855 INFO L226 Difference]: Without dead ends: 18036 [2022-02-15 12:23:50,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1373 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=781, Invalid=4189, Unknown=0, NotChecked=0, Total=4970 [2022-02-15 12:23:50,856 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 382 mSDsluCounter, 2429 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:23:50,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 2457 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:23:50,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18036 states. [2022-02-15 12:23:51,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18036 to 13497. [2022-02-15 12:23:51,075 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) [2022-02-15 12:23:51,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13497 states to 13497 states and 41135 transitions. [2022-02-15 12:23:51,104 INFO L78 Accepts]: Start accepts. Automaton has 13497 states and 41135 transitions. Word has length 70 [2022-02-15 12:23:51,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:23:51,104 INFO L470 AbstractCegarLoop]: Abstraction has 13497 states and 41135 transitions. [2022-02-15 12:23:51,104 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) [2022-02-15 12:23:51,105 INFO L276 IsEmpty]: Start isEmpty. Operand 13497 states and 41135 transitions. [2022-02-15 12:23:51,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:23:51,124 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:23:51,125 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] [2022-02-15 12:23:51,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-02-15 12:23:51,325 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 [2022-02-15 12:23:51,325 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:23:51,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:23:51,325 INFO L85 PathProgramCache]: Analyzing trace with hash 769385419, now seen corresponding path program 111 times [2022-02-15 12:23:51,325 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:23:51,325 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503763816] [2022-02-15 12:23:51,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:23:51,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:23:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:23:51,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:51,466 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:23:51,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503763816] [2022-02-15 12:23:51,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503763816] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:23:51,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521665953] [2022-02-15 12:23:51,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:23:51,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:23:51,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:23:51,468 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) [2022-02-15 12:23:51,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-02-15 12:23:51,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-15 12:23:51,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:23:51,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:23:51,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:23:51,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:51,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:23:52,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:52,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521665953] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:23:52,437 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:23:52,437 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:23:52,438 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588584493] [2022-02-15 12:23:52,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:23:52,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:23:52,438 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:23:52,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:23:52,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:23:52,438 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) [2022-02-15 12:23:53,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:23:53,643 INFO L93 Difference]: Finished difference Result 18174 states and 54923 transitions. [2022-02-15 12:23:53,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-15 12:23:53,644 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 [2022-02-15 12:23:53,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:23:53,678 INFO L225 Difference]: With dead ends: 18174 [2022-02-15 12:23:53,678 INFO L226 Difference]: Without dead ends: 17901 [2022-02-15 12:23:53,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1391 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=727, Invalid=4103, Unknown=0, NotChecked=0, Total=4830 [2022-02-15 12:23:53,679 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 495 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 12:23:53,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 2116 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 12:23:53,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17901 states. [2022-02-15 12:23:53,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17901 to 13481. [2022-02-15 12:23:53,898 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) [2022-02-15 12:23:53,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13481 states to 13481 states and 41075 transitions. [2022-02-15 12:23:53,928 INFO L78 Accepts]: Start accepts. Automaton has 13481 states and 41075 transitions. Word has length 70 [2022-02-15 12:23:53,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:23:53,928 INFO L470 AbstractCegarLoop]: Abstraction has 13481 states and 41075 transitions. [2022-02-15 12:23:53,929 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) [2022-02-15 12:23:53,929 INFO L276 IsEmpty]: Start isEmpty. Operand 13481 states and 41075 transitions. [2022-02-15 12:23:53,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:23:53,949 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:23:53,949 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] [2022-02-15 12:23:53,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-02-15 12:23:54,151 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 [2022-02-15 12:23:54,151 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:23:54,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:23:54,152 INFO L85 PathProgramCache]: Analyzing trace with hash -144331505, now seen corresponding path program 112 times [2022-02-15 12:23:54,152 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:23:54,152 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933013842] [2022-02-15 12:23:54,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:23:54,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:23:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:23:54,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:54,275 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:23:54,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933013842] [2022-02-15 12:23:54,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933013842] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:23:54,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461856906] [2022-02-15 12:23:54,275 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:23:54,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:23:54,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:23:54,277 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) [2022-02-15 12:23:54,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-02-15 12:23:54,401 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:23:54,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:23:54,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-15 12:23:54,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:23:54,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:54,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:23:55,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:55,050 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461856906] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:23:55,051 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:23:55,051 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:23:55,051 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195011034] [2022-02-15 12:23:55,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:23:55,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:23:55,051 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:23:55,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:23:55,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=948, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:23:55,052 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) [2022-02-15 12:23:56,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:23:56,049 INFO L93 Difference]: Finished difference Result 15223 states and 45902 transitions. [2022-02-15 12:23:56,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 12:23:56,049 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 [2022-02-15 12:23:56,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:23:56,080 INFO L225 Difference]: With dead ends: 15223 [2022-02-15 12:23:56,080 INFO L226 Difference]: Without dead ends: 15100 [2022-02-15 12:23:56,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=396, Invalid=2796, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 12:23:56,081 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 293 mSDsluCounter, 2704 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 2722 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:23:56,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 2722 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:23:56,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15100 states. [2022-02-15 12:23:56,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15100 to 13613. [2022-02-15 12:23:56,272 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) [2022-02-15 12:23:56,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13613 states to 13613 states and 41466 transitions. [2022-02-15 12:23:56,303 INFO L78 Accepts]: Start accepts. Automaton has 13613 states and 41466 transitions. Word has length 70 [2022-02-15 12:23:56,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:23:56,303 INFO L470 AbstractCegarLoop]: Abstraction has 13613 states and 41466 transitions. [2022-02-15 12:23:56,303 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) [2022-02-15 12:23:56,303 INFO L276 IsEmpty]: Start isEmpty. Operand 13613 states and 41466 transitions. [2022-02-15 12:23:56,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:23:56,324 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:23:56,324 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] [2022-02-15 12:23:56,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2022-02-15 12:23:56,525 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 [2022-02-15 12:23:56,525 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:23:56,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:23:56,526 INFO L85 PathProgramCache]: Analyzing trace with hash 776265127, now seen corresponding path program 113 times [2022-02-15 12:23:56,526 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:23:56,526 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813468183] [2022-02-15 12:23:56,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:23:56,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:23:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:23:56,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:56,656 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:23:56,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813468183] [2022-02-15 12:23:56,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813468183] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:23:56,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541989002] [2022-02-15 12:23:56,656 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:23:56,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:23:56,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:23:56,658 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) [2022-02-15 12:23:56,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-02-15 12:23:56,770 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:23:56,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:23:56,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:23:56,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:23:57,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:57,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:23:57,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:23:57,560 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541989002] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:23:57,560 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:23:57,560 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:23:57,560 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259302570] [2022-02-15 12:23:57,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:23:57,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:23:57,560 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:23:57,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:23:57,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:23:57,561 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) [2022-02-15 12:23:59,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:23:59,559 INFO L93 Difference]: Finished difference Result 19314 states and 58208 transitions. [2022-02-15 12:23:59,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-15 12:23:59,559 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 [2022-02-15 12:23:59,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:23:59,599 INFO L225 Difference]: With dead ends: 19314 [2022-02-15 12:23:59,599 INFO L226 Difference]: Without dead ends: 19188 [2022-02-15 12:23:59,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=825, Invalid=5981, Unknown=0, NotChecked=0, Total=6806 [2022-02-15 12:23:59,600 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 424 mSDsluCounter, 2416 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:23:59,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 2457 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:23:59,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19188 states. [2022-02-15 12:23:59,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19188 to 13641. [2022-02-15 12:23:59,829 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) [2022-02-15 12:23:59,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13641 states to 13641 states and 41547 transitions. [2022-02-15 12:23:59,860 INFO L78 Accepts]: Start accepts. Automaton has 13641 states and 41547 transitions. Word has length 70 [2022-02-15 12:23:59,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:23:59,861 INFO L470 AbstractCegarLoop]: Abstraction has 13641 states and 41547 transitions. [2022-02-15 12:23:59,861 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) [2022-02-15 12:23:59,861 INFO L276 IsEmpty]: Start isEmpty. Operand 13641 states and 41547 transitions. [2022-02-15 12:23:59,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:23:59,881 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:23:59,881 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] [2022-02-15 12:23:59,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2022-02-15 12:24:00,081 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 [2022-02-15 12:24:00,082 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:24:00,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:24:00,082 INFO L85 PathProgramCache]: Analyzing trace with hash 737868383, now seen corresponding path program 114 times [2022-02-15 12:24:00,082 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:24:00,082 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256876243] [2022-02-15 12:24:00,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:24:00,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:24:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:24:00,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:00,211 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:24:00,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256876243] [2022-02-15 12:24:00,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256876243] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:24:00,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576760452] [2022-02-15 12:24:00,211 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:24:00,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:24:00,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:24:00,212 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) [2022-02-15 12:24:00,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-02-15 12:24:00,326 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-15 12:24:00,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:24:00,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:24:00,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:24:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:00,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:24:01,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:01,092 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576760452] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:24:01,092 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:24:01,092 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:24:01,092 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137487349] [2022-02-15 12:24:01,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:24:01,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:24:01,093 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:24:01,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:24:01,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:24:01,093 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) [2022-02-15 12:24:03,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:24:03,016 INFO L93 Difference]: Finished difference Result 19962 states and 60120 transitions. [2022-02-15 12:24:03,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-15 12:24:03,016 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 [2022-02-15 12:24:03,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:24:03,053 INFO L225 Difference]: With dead ends: 19962 [2022-02-15 12:24:03,053 INFO L226 Difference]: Without dead ends: 19822 [2022-02-15 12:24:03,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1846 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=799, Invalid=5363, Unknown=0, NotChecked=0, Total=6162 [2022-02-15 12:24:03,054 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 441 mSDsluCounter, 2451 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 2494 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:24:03,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 2494 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:24:03,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19822 states. [2022-02-15 12:24:03,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19822 to 13653. [2022-02-15 12:24:03,274 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) [2022-02-15 12:24:03,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13653 states to 13653 states and 41592 transitions. [2022-02-15 12:24:03,303 INFO L78 Accepts]: Start accepts. Automaton has 13653 states and 41592 transitions. Word has length 70 [2022-02-15 12:24:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:24:03,303 INFO L470 AbstractCegarLoop]: Abstraction has 13653 states and 41592 transitions. [2022-02-15 12:24:03,303 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) [2022-02-15 12:24:03,303 INFO L276 IsEmpty]: Start isEmpty. Operand 13653 states and 41592 transitions. [2022-02-15 12:24:03,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:24:03,322 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:24:03,322 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] [2022-02-15 12:24:03,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2022-02-15 12:24:03,523 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 [2022-02-15 12:24:03,523 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:24:03,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:24:03,523 INFO L85 PathProgramCache]: Analyzing trace with hash -321983337, now seen corresponding path program 115 times [2022-02-15 12:24:03,523 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:24:03,523 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538863023] [2022-02-15 12:24:03,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:24:03,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:24:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:24:03,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:03,646 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:24:03,646 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538863023] [2022-02-15 12:24:03,646 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538863023] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:24:03,646 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833688933] [2022-02-15 12:24:03,646 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:24:03,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:24:03,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:24:03,647 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) [2022-02-15 12:24:03,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-02-15 12:24:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:24:03,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:24:03,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:24:04,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:04,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:24:04,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:04,579 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833688933] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:24:04,580 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:24:04,580 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:24:04,580 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744153950] [2022-02-15 12:24:04,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:24:04,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:24:04,580 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:24:04,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:24:04,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:24:04,580 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) [2022-02-15 12:24:07,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:24:07,769 INFO L93 Difference]: Finished difference Result 20542 states and 61961 transitions. [2022-02-15 12:24:07,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-15 12:24:07,770 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 [2022-02-15 12:24:07,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:24:07,811 INFO L225 Difference]: With dead ends: 20542 [2022-02-15 12:24:07,811 INFO L226 Difference]: Without dead ends: 20416 [2022-02-15 12:24:07,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4450 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1732, Invalid=11150, Unknown=0, NotChecked=0, Total=12882 [2022-02-15 12:24:07,813 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 551 mSDsluCounter, 2288 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:24:07,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [551 Valid, 2347 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:24:07,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20416 states. [2022-02-15 12:24:08,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20416 to 13721. [2022-02-15 12:24:08,084 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) [2022-02-15 12:24:08,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13721 states to 13721 states and 41795 transitions. [2022-02-15 12:24:08,115 INFO L78 Accepts]: Start accepts. Automaton has 13721 states and 41795 transitions. Word has length 70 [2022-02-15 12:24:08,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:24:08,115 INFO L470 AbstractCegarLoop]: Abstraction has 13721 states and 41795 transitions. [2022-02-15 12:24:08,115 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) [2022-02-15 12:24:08,116 INFO L276 IsEmpty]: Start isEmpty. Operand 13721 states and 41795 transitions. [2022-02-15 12:24:08,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:24:08,136 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:24:08,136 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] [2022-02-15 12:24:08,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2022-02-15 12:24:08,336 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 [2022-02-15 12:24:08,337 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:24:08,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:24:08,337 INFO L85 PathProgramCache]: Analyzing trace with hash -360380081, now seen corresponding path program 116 times [2022-02-15 12:24:08,337 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:24:08,337 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138167387] [2022-02-15 12:24:08,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:24:08,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:24:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:24:08,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:08,466 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:24:08,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138167387] [2022-02-15 12:24:08,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138167387] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:24:08,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771172687] [2022-02-15 12:24:08,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:24:08,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:24:08,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:24:08,467 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) [2022-02-15 12:24:08,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-02-15 12:24:08,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:24:08,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:24:08,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:24:08,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:24:08,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:08,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:24:09,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:09,347 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771172687] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:24:09,347 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:24:09,347 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:24:09,347 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855769767] [2022-02-15 12:24:09,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:24:09,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:24:09,348 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:24:09,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:24:09,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:24:09,348 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) [2022-02-15 12:24:12,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:24:12,733 INFO L93 Difference]: Finished difference Result 21226 states and 63940 transitions. [2022-02-15 12:24:12,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-02-15 12:24:12,734 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 [2022-02-15 12:24:12,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:24:12,776 INFO L225 Difference]: With dead ends: 21226 [2022-02-15 12:24:12,776 INFO L226 Difference]: Without dead ends: 21086 [2022-02-15 12:24:12,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4333 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1756, Invalid=10900, Unknown=0, NotChecked=0, Total=12656 [2022-02-15 12:24:12,777 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 528 mSDsluCounter, 2960 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 1668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:24:12,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 2998 Invalid, 1668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1575 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:24:12,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21086 states. [2022-02-15 12:24:13,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21086 to 13689. [2022-02-15 12:24:13,018 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) [2022-02-15 12:24:13,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13689 states to 13689 states and 41703 transitions. [2022-02-15 12:24:13,048 INFO L78 Accepts]: Start accepts. Automaton has 13689 states and 41703 transitions. Word has length 70 [2022-02-15 12:24:13,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:24:13,048 INFO L470 AbstractCegarLoop]: Abstraction has 13689 states and 41703 transitions. [2022-02-15 12:24:13,048 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) [2022-02-15 12:24:13,048 INFO L276 IsEmpty]: Start isEmpty. Operand 13689 states and 41703 transitions. [2022-02-15 12:24:13,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:24:13,068 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:24:13,069 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] [2022-02-15 12:24:13,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2022-02-15 12:24:13,269 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 [2022-02-15 12:24:13,269 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:24:13,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:24:13,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1326068461, now seen corresponding path program 117 times [2022-02-15 12:24:13,269 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:24:13,269 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270921420] [2022-02-15 12:24:13,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:24:13,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:24:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:24:13,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:13,394 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:24:13,394 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270921420] [2022-02-15 12:24:13,394 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270921420] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:24:13,394 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249929041] [2022-02-15 12:24:13,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:24:13,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:24:13,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:24:13,395 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) [2022-02-15 12:24:13,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-02-15 12:24:13,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-15 12:24:13,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:24:13,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:24:13,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:24:13,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:13,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:24:14,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:14,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249929041] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:24:14,305 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:24:14,306 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:24:14,306 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384967304] [2022-02-15 12:24:14,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:24:14,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:24:14,306 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:24:14,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:24:14,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=976, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:24:14,306 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) [2022-02-15 12:24:18,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:24:18,370 INFO L93 Difference]: Finished difference Result 23633 states and 71229 transitions. [2022-02-15 12:24:18,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-02-15 12:24:18,370 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 [2022-02-15 12:24:18,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:24:18,411 INFO L225 Difference]: With dead ends: 23633 [2022-02-15 12:24:18,412 INFO L226 Difference]: Without dead ends: 23493 [2022-02-15 12:24:18,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6496 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2719, Invalid=14573, Unknown=0, NotChecked=0, Total=17292 [2022-02-15 12:24:18,412 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 696 mSDsluCounter, 2374 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 2438 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:24:18,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 2438 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:24:18,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23493 states. [2022-02-15 12:24:18,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23493 to 13777. [2022-02-15 12:24:18,651 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) [2022-02-15 12:24:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13777 states to 13777 states and 42157 transitions. [2022-02-15 12:24:18,681 INFO L78 Accepts]: Start accepts. Automaton has 13777 states and 42157 transitions. Word has length 70 [2022-02-15 12:24:18,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:24:18,681 INFO L470 AbstractCegarLoop]: Abstraction has 13777 states and 42157 transitions. [2022-02-15 12:24:18,681 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) [2022-02-15 12:24:18,681 INFO L276 IsEmpty]: Start isEmpty. Operand 13777 states and 42157 transitions. [2022-02-15 12:24:18,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:24:18,701 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:24:18,701 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 12:24:18,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2022-02-15 12:24:18,901 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 [2022-02-15 12:24:18,901 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:24:18,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:24:18,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1942574281, now seen corresponding path program 118 times [2022-02-15 12:24:18,902 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:24:18,902 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163580636] [2022-02-15 12:24:18,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:24:18,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:24:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:24:19,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:19,024 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:24:19,024 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163580636] [2022-02-15 12:24:19,024 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163580636] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:24:19,024 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579433605] [2022-02-15 12:24:19,024 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:24:19,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:24:19,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:24:19,025 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) [2022-02-15 12:24:19,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-02-15 12:24:19,140 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:24:19,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:24:19,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-15 12:24:19,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:24:19,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:19,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:24:19,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:19,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579433605] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:24:19,783 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:24:19,783 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:24:19,783 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182703146] [2022-02-15 12:24:19,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:24:19,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:24:19,783 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:24:19,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:24:19,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:24:19,784 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) [2022-02-15 12:24:23,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:24:23,376 INFO L93 Difference]: Finished difference Result 18748 states and 56815 transitions. [2022-02-15 12:24:23,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-02-15 12:24:23,376 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 [2022-02-15 12:24:23,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:24:23,412 INFO L225 Difference]: With dead ends: 18748 [2022-02-15 12:24:23,412 INFO L226 Difference]: Without dead ends: 18670 [2022-02-15 12:24:23,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8162 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2949, Invalid=20307, Unknown=0, NotChecked=0, Total=23256 [2022-02-15 12:24:23,415 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 675 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 1987 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 3238 SdHoareTripleChecker+Invalid, 2095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:24:23,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 3238 Invalid, 2095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1987 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:24:23,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18670 states. [2022-02-15 12:24:23,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18670 to 14421. [2022-02-15 12:24:23,725 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) [2022-02-15 12:24:23,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14421 states to 14421 states and 44160 transitions. [2022-02-15 12:24:23,755 INFO L78 Accepts]: Start accepts. Automaton has 14421 states and 44160 transitions. Word has length 70 [2022-02-15 12:24:23,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:24:23,755 INFO L470 AbstractCegarLoop]: Abstraction has 14421 states and 44160 transitions. [2022-02-15 12:24:23,755 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) [2022-02-15 12:24:23,755 INFO L276 IsEmpty]: Start isEmpty. Operand 14421 states and 44160 transitions. [2022-02-15 12:24:23,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:24:23,776 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:24:23,776 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] [2022-02-15 12:24:23,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2022-02-15 12:24:23,976 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 [2022-02-15 12:24:23,976 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:24:23,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:24:23,977 INFO L85 PathProgramCache]: Analyzing trace with hash -2012351217, now seen corresponding path program 119 times [2022-02-15 12:24:23,977 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:24:23,977 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033633084] [2022-02-15 12:24:23,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:24:23,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:24:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:24:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:24,100 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:24:24,100 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033633084] [2022-02-15 12:24:24,100 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033633084] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:24:24,100 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691880883] [2022-02-15 12:24:24,100 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:24:24,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:24:24,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:24:24,101 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) [2022-02-15 12:24:24,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-02-15 12:24:24,216 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:24:24,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:24:24,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:24:24,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:24:24,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:24,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:24:24,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:24,853 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691880883] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:24:24,853 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:24:24,853 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:24:24,853 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966944398] [2022-02-15 12:24:24,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:24:24,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:24:24,853 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:24:24,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:24:24,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:24:24,854 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) [2022-02-15 12:24:25,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:24:25,959 INFO L93 Difference]: Finished difference Result 15479 states and 47015 transitions. [2022-02-15 12:24:25,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-15 12:24:25,959 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 [2022-02-15 12:24:25,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:24:25,991 INFO L225 Difference]: With dead ends: 15479 [2022-02-15 12:24:25,992 INFO L226 Difference]: Without dead ends: 15416 [2022-02-15 12:24:25,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=607, Invalid=3683, Unknown=0, NotChecked=0, Total=4290 [2022-02-15 12:24:25,992 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 396 mSDsluCounter, 2281 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 2355 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:24:25,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 2355 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:24:26,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15416 states. [2022-02-15 12:24:26,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15416 to 14377. [2022-02-15 12:24:26,190 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) [2022-02-15 12:24:26,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14377 states to 14377 states and 44031 transitions. [2022-02-15 12:24:26,220 INFO L78 Accepts]: Start accepts. Automaton has 14377 states and 44031 transitions. Word has length 70 [2022-02-15 12:24:26,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:24:26,221 INFO L470 AbstractCegarLoop]: Abstraction has 14377 states and 44031 transitions. [2022-02-15 12:24:26,221 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) [2022-02-15 12:24:26,221 INFO L276 IsEmpty]: Start isEmpty. Operand 14377 states and 44031 transitions. [2022-02-15 12:24:26,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:24:26,241 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:24:26,241 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] [2022-02-15 12:24:26,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2022-02-15 12:24:26,442 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 [2022-02-15 12:24:26,442 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:24:26,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:24:26,442 INFO L85 PathProgramCache]: Analyzing trace with hash 570526483, now seen corresponding path program 120 times [2022-02-15 12:24:26,442 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:24:26,442 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96226910] [2022-02-15 12:24:26,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:24:26,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:24:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:24:26,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:26,573 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:24:26,573 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96226910] [2022-02-15 12:24:26,573 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96226910] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:24:26,573 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599188092] [2022-02-15 12:24:26,573 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:24:26,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:24:26,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:24:26,574 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) [2022-02-15 12:24:26,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-02-15 12:24:26,691 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-15 12:24:26,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:24:26,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:24:26,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:24:27,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:27,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:24:27,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:27,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599188092] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:24:27,459 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:24:27,459 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:24:27,459 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755943361] [2022-02-15 12:24:27,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:24:27,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:24:27,459 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:24:27,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:24:27,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:24:27,459 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) [2022-02-15 12:24:29,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:24:29,477 INFO L93 Difference]: Finished difference Result 20394 states and 61586 transitions. [2022-02-15 12:24:29,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-15 12:24:29,477 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 [2022-02-15 12:24:29,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:24:29,517 INFO L225 Difference]: With dead ends: 20394 [2022-02-15 12:24:29,517 INFO L226 Difference]: Without dead ends: 20260 [2022-02-15 12:24:29,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=828, Invalid=5492, Unknown=0, NotChecked=0, Total=6320 [2022-02-15 12:24:29,518 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 421 mSDsluCounter, 2650 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 2680 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:24:29,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 2680 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:24:29,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20260 states. [2022-02-15 12:24:29,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20260 to 14373. [2022-02-15 12:24:29,777 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) [2022-02-15 12:24:29,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14373 states to 14373 states and 44024 transitions. [2022-02-15 12:24:29,809 INFO L78 Accepts]: Start accepts. Automaton has 14373 states and 44024 transitions. Word has length 70 [2022-02-15 12:24:29,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:24:29,809 INFO L470 AbstractCegarLoop]: Abstraction has 14373 states and 44024 transitions. [2022-02-15 12:24:29,809 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) [2022-02-15 12:24:29,809 INFO L276 IsEmpty]: Start isEmpty. Operand 14373 states and 44024 transitions. [2022-02-15 12:24:29,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:24:29,830 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:24:29,830 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] [2022-02-15 12:24:29,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-02-15 12:24:30,030 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 [2022-02-15 12:24:30,030 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:24:30,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:24:30,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1182430989, now seen corresponding path program 121 times [2022-02-15 12:24:30,031 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:24:30,031 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921041837] [2022-02-15 12:24:30,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:24:30,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:24:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:24:30,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:30,160 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:24:30,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921041837] [2022-02-15 12:24:30,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921041837] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:24:30,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399198062] [2022-02-15 12:24:30,160 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:24:30,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:24:30,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:24:30,161 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) [2022-02-15 12:24:30,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-02-15 12:24:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:24:30,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:24:30,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:24:30,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:30,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:24:31,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:31,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399198062] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:24:31,040 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:24:31,040 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:24:31,040 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522006393] [2022-02-15 12:24:31,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:24:31,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:24:31,040 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:24:31,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:24:31,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:24:31,041 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) [2022-02-15 12:24:33,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:24:33,107 INFO L93 Difference]: Finished difference Result 20356 states and 61496 transitions. [2022-02-15 12:24:33,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-15 12:24:33,107 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 [2022-02-15 12:24:33,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:24:33,151 INFO L225 Difference]: With dead ends: 20356 [2022-02-15 12:24:33,151 INFO L226 Difference]: Without dead ends: 20206 [2022-02-15 12:24:33,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=924, Invalid=6048, Unknown=0, NotChecked=0, Total=6972 [2022-02-15 12:24:33,152 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 454 mSDsluCounter, 2759 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 2789 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:24:33,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [454 Valid, 2789 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:24:33,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20206 states. [2022-02-15 12:24:33,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20206 to 14345. [2022-02-15 12:24:33,414 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) [2022-02-15 12:24:33,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14345 states to 14345 states and 43939 transitions. [2022-02-15 12:24:33,448 INFO L78 Accepts]: Start accepts. Automaton has 14345 states and 43939 transitions. Word has length 70 [2022-02-15 12:24:33,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:24:33,448 INFO L470 AbstractCegarLoop]: Abstraction has 14345 states and 43939 transitions. [2022-02-15 12:24:33,448 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) [2022-02-15 12:24:33,448 INFO L276 IsEmpty]: Start isEmpty. Operand 14345 states and 43939 transitions. [2022-02-15 12:24:33,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:24:33,470 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:24:33,470 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] [2022-02-15 12:24:33,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2022-02-15 12:24:33,670 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 [2022-02-15 12:24:33,671 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:24:33,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:24:33,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1226777689, now seen corresponding path program 122 times [2022-02-15 12:24:33,671 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:24:33,671 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53377794] [2022-02-15 12:24:33,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:24:33,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:24:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:24:33,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:33,798 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:24:33,798 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53377794] [2022-02-15 12:24:33,798 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53377794] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:24:33,798 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821650797] [2022-02-15 12:24:33,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:24:33,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:24:33,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:24:33,799 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) [2022-02-15 12:24:33,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-02-15 12:24:33,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:24:33,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:24:33,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:24:33,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:24:34,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:34,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:24:34,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:34,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821650797] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:24:34,674 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:24:34,674 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:24:34,674 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448546959] [2022-02-15 12:24:34,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:24:34,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:24:34,674 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:24:34,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:24:34,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=995, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:24:34,675 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) [2022-02-15 12:24:36,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:24:36,362 INFO L93 Difference]: Finished difference Result 19962 states and 60523 transitions. [2022-02-15 12:24:36,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-15 12:24:36,362 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 [2022-02-15 12:24:36,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:24:36,398 INFO L225 Difference]: With dead ends: 19962 [2022-02-15 12:24:36,398 INFO L226 Difference]: Without dead ends: 19783 [2022-02-15 12:24:36,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1506 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=766, Invalid=4636, Unknown=0, NotChecked=0, Total=5402 [2022-02-15 12:24:36,399 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 427 mSDsluCounter, 2395 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:24:36,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 2424 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:24:36,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19783 states. [2022-02-15 12:24:36,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19783 to 14317. [2022-02-15 12:24:36,639 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) [2022-02-15 12:24:36,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14317 states to 14317 states and 43846 transitions. [2022-02-15 12:24:36,672 INFO L78 Accepts]: Start accepts. Automaton has 14317 states and 43846 transitions. Word has length 70 [2022-02-15 12:24:36,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:24:36,672 INFO L470 AbstractCegarLoop]: Abstraction has 14317 states and 43846 transitions. [2022-02-15 12:24:36,672 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) [2022-02-15 12:24:36,672 INFO L276 IsEmpty]: Start isEmpty. Operand 14317 states and 43846 transitions. [2022-02-15 12:24:36,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:24:36,696 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:24:36,696 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] [2022-02-15 12:24:36,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2022-02-15 12:24:36,897 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 [2022-02-15 12:24:36,897 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:24:36,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:24:36,897 INFO L85 PathProgramCache]: Analyzing trace with hash 2058340145, now seen corresponding path program 123 times [2022-02-15 12:24:36,897 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:24:36,897 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371569690] [2022-02-15 12:24:36,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:24:36,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:24:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:24:37,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:37,015 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:24:37,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371569690] [2022-02-15 12:24:37,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371569690] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:24:37,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530659105] [2022-02-15 12:24:37,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:24:37,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:24:37,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:24:37,017 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) [2022-02-15 12:24:37,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-02-15 12:24:37,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-15 12:24:37,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:24:37,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:24:37,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:24:37,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:37,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:24:37,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:37,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530659105] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:24:37,778 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:24:37,778 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:24:37,778 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690419712] [2022-02-15 12:24:37,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:24:37,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:24:37,779 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:24:37,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:24:37,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:24:37,779 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) [2022-02-15 12:24:38,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:24:38,847 INFO L93 Difference]: Finished difference Result 17980 states and 54647 transitions. [2022-02-15 12:24:38,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-15 12:24:38,848 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 [2022-02-15 12:24:38,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:24:38,884 INFO L225 Difference]: With dead ends: 17980 [2022-02-15 12:24:38,884 INFO L226 Difference]: Without dead ends: 17797 [2022-02-15 12:24:38,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1570 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=825, Invalid=4725, Unknown=0, NotChecked=0, Total=5550 [2022-02-15 12:24:38,885 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 443 mSDsluCounter, 2133 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 12:24:38,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 2186 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 12:24:38,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17797 states. [2022-02-15 12:24:39,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17797 to 14341. [2022-02-15 12:24:39,199 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) [2022-02-15 12:24:39,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14341 states to 14341 states and 43868 transitions. [2022-02-15 12:24:39,231 INFO L78 Accepts]: Start accepts. Automaton has 14341 states and 43868 transitions. Word has length 70 [2022-02-15 12:24:39,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:24:39,231 INFO L470 AbstractCegarLoop]: Abstraction has 14341 states and 43868 transitions. [2022-02-15 12:24:39,231 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) [2022-02-15 12:24:39,231 INFO L276 IsEmpty]: Start isEmpty. Operand 14341 states and 43868 transitions. [2022-02-15 12:24:39,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:24:39,252 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:24:39,252 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] [2022-02-15 12:24:39,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2022-02-15 12:24:39,453 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 [2022-02-15 12:24:39,453 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:24:39,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:24:39,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1316030519, now seen corresponding path program 124 times [2022-02-15 12:24:39,454 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:24:39,454 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174527474] [2022-02-15 12:24:39,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:24:39,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:24:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:24:39,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:39,587 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:24:39,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174527474] [2022-02-15 12:24:39,588 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174527474] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:24:39,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894166511] [2022-02-15 12:24:39,588 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:24:39,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:24:39,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:24:39,589 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) [2022-02-15 12:24:39,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-02-15 12:24:39,713 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:24:39,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:24:39,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-15 12:24:39,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:24:40,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:40,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:24:40,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:40,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894166511] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:24:40,355 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:24:40,355 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:24:40,355 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234698450] [2022-02-15 12:24:40,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:24:40,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:24:40,355 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:24:40,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:24:40,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:24:40,356 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) [2022-02-15 12:24:41,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:24:41,980 INFO L93 Difference]: Finished difference Result 23806 states and 72311 transitions. [2022-02-15 12:24:41,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-15 12:24:41,980 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 [2022-02-15 12:24:41,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:24:42,031 INFO L225 Difference]: With dead ends: 23806 [2022-02-15 12:24:42,031 INFO L226 Difference]: Without dead ends: 23707 [2022-02-15 12:24:42,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2157 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=920, Invalid=5886, Unknown=0, NotChecked=0, Total=6806 [2022-02-15 12:24:42,032 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 501 mSDsluCounter, 2866 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 2888 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:24:42,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 2888 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:24:42,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23707 states. [2022-02-15 12:24:42,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23707 to 14569. [2022-02-15 12:24:42,318 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) [2022-02-15 12:24:42,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14569 states to 14569 states and 44595 transitions. [2022-02-15 12:24:42,351 INFO L78 Accepts]: Start accepts. Automaton has 14569 states and 44595 transitions. Word has length 70 [2022-02-15 12:24:42,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:24:42,352 INFO L470 AbstractCegarLoop]: Abstraction has 14569 states and 44595 transitions. [2022-02-15 12:24:42,352 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) [2022-02-15 12:24:42,352 INFO L276 IsEmpty]: Start isEmpty. Operand 14569 states and 44595 transitions. [2022-02-15 12:24:42,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:24:42,374 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:24:42,374 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] [2022-02-15 12:24:42,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2022-02-15 12:24:42,575 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 [2022-02-15 12:24:42,575 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:24:42,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:24:42,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1354427263, now seen corresponding path program 125 times [2022-02-15 12:24:42,575 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:24:42,575 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121588865] [2022-02-15 12:24:42,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:24:42,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:24:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:24:42,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:42,702 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:24:42,702 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121588865] [2022-02-15 12:24:42,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121588865] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:24:42,702 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082825224] [2022-02-15 12:24:42,702 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:24:42,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:24:42,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:24:42,703 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) [2022-02-15 12:24:42,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-02-15 12:24:42,827 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:24:42,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:24:42,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:24:42,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:24:43,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:43,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:24:43,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:43,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082825224] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:24:43,619 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:24:43,619 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:24:43,619 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113193372] [2022-02-15 12:24:43,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:24:43,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:24:43,619 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:24:43,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:24:43,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:24:43,620 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) [2022-02-15 12:24:46,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:24:46,602 INFO L93 Difference]: Finished difference Result 27149 states and 82633 transitions. [2022-02-15 12:24:46,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-15 12:24:46,603 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 [2022-02-15 12:24:46,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:24:46,663 INFO L225 Difference]: With dead ends: 27149 [2022-02-15 12:24:46,663 INFO L226 Difference]: Without dead ends: 27009 [2022-02-15 12:24:46,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4430 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1891, Invalid=10765, Unknown=0, NotChecked=0, Total=12656 [2022-02-15 12:24:46,665 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 690 mSDsluCounter, 2529 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:24:46,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 2586 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:24:46,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27009 states. [2022-02-15 12:24:46,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27009 to 14625. [2022-02-15 12:24:46,993 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) [2022-02-15 12:24:47,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14625 states to 14625 states and 44769 transitions. [2022-02-15 12:24:47,026 INFO L78 Accepts]: Start accepts. Automaton has 14625 states and 44769 transitions. Word has length 70 [2022-02-15 12:24:47,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:24:47,026 INFO L470 AbstractCegarLoop]: Abstraction has 14625 states and 44769 transitions. [2022-02-15 12:24:47,026 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) [2022-02-15 12:24:47,026 INFO L276 IsEmpty]: Start isEmpty. Operand 14625 states and 44769 transitions. [2022-02-15 12:24:47,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:24:47,048 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:24:47,048 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] [2022-02-15 12:24:47,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2022-02-15 12:24:47,248 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 [2022-02-15 12:24:47,249 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:24:47,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:24:47,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1880688313, now seen corresponding path program 126 times [2022-02-15 12:24:47,249 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:24:47,249 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457424857] [2022-02-15 12:24:47,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:24:47,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:24:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:24:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:47,393 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:24:47,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457424857] [2022-02-15 12:24:47,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457424857] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:24:47,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019607463] [2022-02-15 12:24:47,393 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:24:47,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:24:47,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:24:47,394 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) [2022-02-15 12:24:47,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-02-15 12:24:47,516 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-15 12:24:47,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:24:47,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:24:47,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:24:47,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:47,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:24:48,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:48,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019607463] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:24:48,329 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:24:48,329 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:24:48,329 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704461578] [2022-02-15 12:24:48,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:24:48,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:24:48,329 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:24:48,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:24:48,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:24:48,330 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) [2022-02-15 12:24:53,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:24:53,335 INFO L93 Difference]: Finished difference Result 27837 states and 84927 transitions. [2022-02-15 12:24:53,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-02-15 12:24:53,335 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 [2022-02-15 12:24:53,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:24:53,398 INFO L225 Difference]: With dead ends: 27837 [2022-02-15 12:24:53,398 INFO L226 Difference]: Without dead ends: 27711 [2022-02-15 12:24:53,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10675 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=3694, Invalid=23366, Unknown=0, NotChecked=0, Total=27060 [2022-02-15 12:24:53,401 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 785 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:24:53,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 2732 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:24:53,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27711 states. [2022-02-15 12:24:53,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27711 to 14513. [2022-02-15 12:24:53,776 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) [2022-02-15 12:24:53,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14513 states to 14513 states and 44409 transitions. [2022-02-15 12:24:53,809 INFO L78 Accepts]: Start accepts. Automaton has 14513 states and 44409 transitions. Word has length 70 [2022-02-15 12:24:53,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:24:53,809 INFO L470 AbstractCegarLoop]: Abstraction has 14513 states and 44409 transitions. [2022-02-15 12:24:53,810 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) [2022-02-15 12:24:53,810 INFO L276 IsEmpty]: Start isEmpty. Operand 14513 states and 44409 transitions. [2022-02-15 12:24:53,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:24:53,832 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:24:53,832 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] [2022-02-15 12:24:53,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2022-02-15 12:24:54,032 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 [2022-02-15 12:24:54,033 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:24:54,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:24:54,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1842291569, now seen corresponding path program 127 times [2022-02-15 12:24:54,033 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:24:54,033 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973493397] [2022-02-15 12:24:54,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:24:54,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:24:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:24:54,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:54,158 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:24:54,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973493397] [2022-02-15 12:24:54,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973493397] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:24:54,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843686412] [2022-02-15 12:24:54,159 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:24:54,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:24:54,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:24:54,160 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) [2022-02-15 12:24:54,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-02-15 12:24:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:24:54,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:24:54,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:24:54,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:54,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:24:55,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:24:55,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843686412] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:24:55,034 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:24:55,034 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:24:55,034 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697490347] [2022-02-15 12:24:55,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:24:55,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:24:55,034 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:24:55,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:24:55,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:24:55,035 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) [2022-02-15 12:25:00,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:25:00,370 INFO L93 Difference]: Finished difference Result 28353 states and 86292 transitions. [2022-02-15 12:25:00,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-02-15 12:25:00,370 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 [2022-02-15 12:25:00,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:25:00,428 INFO L225 Difference]: With dead ends: 28353 [2022-02-15 12:25:00,428 INFO L226 Difference]: Without dead ends: 28213 [2022-02-15 12:25:00,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11311 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=4137, Invalid=24593, Unknown=0, NotChecked=0, Total=28730 [2022-02-15 12:25:00,430 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 852 mSDsluCounter, 3154 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 3187 SdHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:25:00,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 3187 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1636 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:25:00,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28213 states. [2022-02-15 12:25:00,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28213 to 14497. [2022-02-15 12:25:00,747 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) [2022-02-15 12:25:00,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14497 states to 14497 states and 44357 transitions. [2022-02-15 12:25:00,779 INFO L78 Accepts]: Start accepts. Automaton has 14497 states and 44357 transitions. Word has length 70 [2022-02-15 12:25:00,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:25:00,779 INFO L470 AbstractCegarLoop]: Abstraction has 14497 states and 44357 transitions. [2022-02-15 12:25:00,779 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) [2022-02-15 12:25:00,779 INFO L276 IsEmpty]: Start isEmpty. Operand 14497 states and 44357 transitions. [2022-02-15 12:25:00,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:25:00,800 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:25:00,801 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 12:25:00,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2022-02-15 12:25:01,001 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 [2022-02-15 12:25:01,001 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:25:01,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:25:01,001 INFO L85 PathProgramCache]: Analyzing trace with hash 876603189, now seen corresponding path program 128 times [2022-02-15 12:25:01,001 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:25:01,001 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118132428] [2022-02-15 12:25:01,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:25:01,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:25:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:25:01,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:01,123 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:25:01,124 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118132428] [2022-02-15 12:25:01,124 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118132428] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:25:01,124 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813658793] [2022-02-15 12:25:01,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:25:01,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:25:01,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:25:01,125 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) [2022-02-15 12:25:01,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-02-15 12:25:01,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:25:01,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:25:01,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:25:01,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:25:01,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:01,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:25:01,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:01,999 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813658793] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:25:01,999 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:25:01,999 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:25:01,999 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107732185] [2022-02-15 12:25:01,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:25:01,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:25:01,999 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:25:01,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:25:02,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=971, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:25:02,000 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) [2022-02-15 12:25:09,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:25:09,053 INFO L93 Difference]: Finished difference Result 29139 states and 88557 transitions. [2022-02-15 12:25:09,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-02-15 12:25:09,053 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 [2022-02-15 12:25:09,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:25:09,118 INFO L225 Difference]: With dead ends: 29139 [2022-02-15 12:25:09,118 INFO L226 Difference]: Without dead ends: 28999 [2022-02-15 12:25:09,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18841 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=6774, Invalid=37536, Unknown=0, NotChecked=0, Total=44310 [2022-02-15 12:25:09,123 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 1000 mSDsluCounter, 2959 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 2992 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:25:09,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 2992 Invalid, 1831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1645 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:25:09,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28999 states. [2022-02-15 12:25:09,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28999 to 14293. [2022-02-15 12:25:09,493 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) [2022-02-15 12:25:09,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14293 states to 14293 states and 43652 transitions. [2022-02-15 12:25:09,525 INFO L78 Accepts]: Start accepts. Automaton has 14293 states and 43652 transitions. Word has length 70 [2022-02-15 12:25:09,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:25:09,525 INFO L470 AbstractCegarLoop]: Abstraction has 14293 states and 43652 transitions. [2022-02-15 12:25:09,525 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) [2022-02-15 12:25:09,525 INFO L276 IsEmpty]: Start isEmpty. Operand 14293 states and 43652 transitions. [2022-02-15 12:25:09,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:25:09,547 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:25:09,547 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] [2022-02-15 12:25:09,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2022-02-15 12:25:09,747 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 [2022-02-15 12:25:09,747 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:25:09,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:25:09,748 INFO L85 PathProgramCache]: Analyzing trace with hash -149721365, now seen corresponding path program 129 times [2022-02-15 12:25:09,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:25:09,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675256672] [2022-02-15 12:25:09,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:25:09,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:25:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:25:09,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:09,877 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:25:09,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675256672] [2022-02-15 12:25:09,877 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675256672] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:25:09,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238111976] [2022-02-15 12:25:09,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:25:09,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:25:09,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:25:09,878 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) [2022-02-15 12:25:09,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-02-15 12:25:10,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-15 12:25:10,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:25:10,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:25:10,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:25:10,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:10,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:25:10,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:10,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238111976] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:25:10,751 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:25:10,752 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:25:10,752 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824184312] [2022-02-15 12:25:10,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:25:10,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:25:10,752 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:25:10,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:25:10,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:25:10,752 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) [2022-02-15 12:25:12,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:25:12,195 INFO L93 Difference]: Finished difference Result 15416 states and 46706 transitions. [2022-02-15 12:25:12,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-15 12:25:12,195 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 [2022-02-15 12:25:12,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:25:12,224 INFO L225 Difference]: With dead ends: 15416 [2022-02-15 12:25:12,225 INFO L226 Difference]: Without dead ends: 15338 [2022-02-15 12:25:12,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1881 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1297, Invalid=5509, Unknown=0, NotChecked=0, Total=6806 [2022-02-15 12:25:12,226 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 543 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 2021 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:25:12,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [543 Valid, 2021 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:25:12,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15338 states. [2022-02-15 12:25:12,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15338 to 12497. [2022-02-15 12:25:12,412 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) [2022-02-15 12:25:12,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12497 states to 12497 states and 37945 transitions. [2022-02-15 12:25:12,440 INFO L78 Accepts]: Start accepts. Automaton has 12497 states and 37945 transitions. Word has length 70 [2022-02-15 12:25:12,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:25:12,440 INFO L470 AbstractCegarLoop]: Abstraction has 12497 states and 37945 transitions. [2022-02-15 12:25:12,440 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) [2022-02-15 12:25:12,440 INFO L276 IsEmpty]: Start isEmpty. Operand 12497 states and 37945 transitions. [2022-02-15 12:25:12,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:25:12,459 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:25:12,459 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] [2022-02-15 12:25:12,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Forceful destruction successful, exit code 0 [2022-02-15 12:25:12,659 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 [2022-02-15 12:25:12,659 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:25:12,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:25:12,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1521769163, now seen corresponding path program 130 times [2022-02-15 12:25:12,659 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:25:12,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17671454] [2022-02-15 12:25:12,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:25:12,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:25:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:25:12,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:12,787 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:25:12,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17671454] [2022-02-15 12:25:12,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17671454] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:25:12,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242569030] [2022-02-15 12:25:12,787 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:25:12,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:25:12,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:25:12,788 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) [2022-02-15 12:25:12,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-02-15 12:25:12,912 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:25:12,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:25:12,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-15 12:25:12,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:25:13,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:13,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:25:13,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:13,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242569030] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:25:13,549 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:25:13,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:25:13,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329273808] [2022-02-15 12:25:13,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:25:13,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:25:13,550 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:25:13,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:25:13,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:25:13,550 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) [2022-02-15 12:25:15,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:25:15,063 INFO L93 Difference]: Finished difference Result 20350 states and 61283 transitions. [2022-02-15 12:25:15,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-15 12:25:15,063 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 [2022-02-15 12:25:15,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:25:15,105 INFO L225 Difference]: With dead ends: 20350 [2022-02-15 12:25:15,105 INFO L226 Difference]: Without dead ends: 20219 [2022-02-15 12:25:15,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2056 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=965, Invalid=5515, Unknown=0, NotChecked=0, Total=6480 [2022-02-15 12:25:15,106 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 577 mSDsluCounter, 2117 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 2169 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:25:15,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [577 Valid, 2169 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:25:15,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20219 states. [2022-02-15 12:25:15,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20219 to 12461. [2022-02-15 12:25:15,343 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) [2022-02-15 12:25:15,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12461 states to 12461 states and 37854 transitions. [2022-02-15 12:25:15,372 INFO L78 Accepts]: Start accepts. Automaton has 12461 states and 37854 transitions. Word has length 70 [2022-02-15 12:25:15,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:25:15,372 INFO L470 AbstractCegarLoop]: Abstraction has 12461 states and 37854 transitions. [2022-02-15 12:25:15,372 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) [2022-02-15 12:25:15,373 INFO L276 IsEmpty]: Start isEmpty. Operand 12461 states and 37854 transitions. [2022-02-15 12:25:15,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:25:15,393 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:25:15,393 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] [2022-02-15 12:25:15,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2022-02-15 12:25:15,593 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 [2022-02-15 12:25:15,594 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:25:15,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:25:15,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1312213585, now seen corresponding path program 131 times [2022-02-15 12:25:15,594 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:25:15,594 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286126798] [2022-02-15 12:25:15,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:25:15,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:25:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:25:15,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:15,714 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:25:15,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286126798] [2022-02-15 12:25:15,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286126798] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:25:15,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976022737] [2022-02-15 12:25:15,714 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:25:15,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:25:15,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:25:15,715 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) [2022-02-15 12:25:15,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-02-15 12:25:15,839 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:25:15,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:25:15,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:25:15,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:25:16,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:16,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 12:25:16,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976022737] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:25:16,117 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 12:25:16,117 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 25 [2022-02-15 12:25:16,117 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975307677] [2022-02-15 12:25:16,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:25:16,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 12:25:16,118 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:25:16,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 12:25:16,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2022-02-15 12:25:16,118 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) [2022-02-15 12:25:16,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:25:16,302 INFO L93 Difference]: Finished difference Result 12624 states and 38234 transitions. [2022-02-15 12:25:16,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 12:25:16,302 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 [2022-02-15 12:25:16,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:25:16,325 INFO L225 Difference]: With dead ends: 12624 [2022-02-15 12:25:16,325 INFO L226 Difference]: Without dead ends: 12337 [2022-02-15 12:25:16,325 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 [2022-02-15 12:25:16,325 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 122 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:25:16,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 1099 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:25:16,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12337 states. [2022-02-15 12:25:16,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12337 to 12177. [2022-02-15 12:25:16,477 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) [2022-02-15 12:25:16,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12177 states to 12177 states and 36765 transitions. [2022-02-15 12:25:16,502 INFO L78 Accepts]: Start accepts. Automaton has 12177 states and 36765 transitions. Word has length 70 [2022-02-15 12:25:16,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:25:16,502 INFO L470 AbstractCegarLoop]: Abstraction has 12177 states and 36765 transitions. [2022-02-15 12:25:16,502 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) [2022-02-15 12:25:16,503 INFO L276 IsEmpty]: Start isEmpty. Operand 12177 states and 36765 transitions. [2022-02-15 12:25:16,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:25:16,519 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:25:16,520 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] [2022-02-15 12:25:16,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2022-02-15 12:25:16,720 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 [2022-02-15 12:25:16,720 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:25:16,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:25:16,720 INFO L85 PathProgramCache]: Analyzing trace with hash 961642929, now seen corresponding path program 132 times [2022-02-15 12:25:16,721 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:25:16,721 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379616451] [2022-02-15 12:25:16,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:25:16,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:25:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:25:16,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:16,842 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:25:16,842 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379616451] [2022-02-15 12:25:16,842 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379616451] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:25:16,842 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503081110] [2022-02-15 12:25:16,843 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:25:16,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:25:16,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:25:16,844 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) [2022-02-15 12:25:16,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-02-15 12:25:16,968 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-15 12:25:16,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:25:16,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:25:16,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:25:17,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:17,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:25:17,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:17,760 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503081110] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:25:17,760 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:25:17,760 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:25:17,760 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371575394] [2022-02-15 12:25:17,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:25:17,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:25:17,760 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:25:17,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:25:17,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=983, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:25:17,760 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) [2022-02-15 12:25:19,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:25:19,536 INFO L93 Difference]: Finished difference Result 21497 states and 64789 transitions. [2022-02-15 12:25:19,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-15 12:25:19,536 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 [2022-02-15 12:25:19,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:25:19,581 INFO L225 Difference]: With dead ends: 21497 [2022-02-15 12:25:19,581 INFO L226 Difference]: Without dead ends: 21227 [2022-02-15 12:25:19,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2570 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=915, Invalid=6741, Unknown=0, NotChecked=0, Total=7656 [2022-02-15 12:25:19,582 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 570 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 2439 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:25:19,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [570 Valid, 2439 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:25:19,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21227 states. [2022-02-15 12:25:19,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21227 to 12001. [2022-02-15 12:25:19,818 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) [2022-02-15 12:25:19,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12001 states to 12001 states and 36077 transitions. [2022-02-15 12:25:19,844 INFO L78 Accepts]: Start accepts. Automaton has 12001 states and 36077 transitions. Word has length 70 [2022-02-15 12:25:19,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:25:19,844 INFO L470 AbstractCegarLoop]: Abstraction has 12001 states and 36077 transitions. [2022-02-15 12:25:19,844 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) [2022-02-15 12:25:19,844 INFO L276 IsEmpty]: Start isEmpty. Operand 12001 states and 36077 transitions. [2022-02-15 12:25:19,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:25:19,861 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:25:19,861 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] [2022-02-15 12:25:19,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Forceful destruction successful, exit code 0 [2022-02-15 12:25:20,061 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 [2022-02-15 12:25:20,061 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:25:20,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:25:20,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1882239561, now seen corresponding path program 133 times [2022-02-15 12:25:20,062 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:25:20,062 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135473878] [2022-02-15 12:25:20,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:25:20,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:25:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:25:20,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:20,183 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:25:20,183 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135473878] [2022-02-15 12:25:20,183 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135473878] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:25:20,183 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845186242] [2022-02-15 12:25:20,183 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:25:20,183 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:25:20,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:25:20,184 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) [2022-02-15 12:25:20,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-02-15 12:25:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:25:20,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:25:20,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:25:20,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:20,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:25:21,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:21,079 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845186242] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:25:21,079 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:25:21,079 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:25:21,080 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498004317] [2022-02-15 12:25:21,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:25:21,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:25:21,080 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:25:21,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:25:21,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:25:21,080 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) [2022-02-15 12:25:22,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:25:22,903 INFO L93 Difference]: Finished difference Result 21117 states and 63584 transitions. [2022-02-15 12:25:22,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-15 12:25:22,903 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 [2022-02-15 12:25:22,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:25:22,940 INFO L225 Difference]: With dead ends: 21117 [2022-02-15 12:25:22,940 INFO L226 Difference]: Without dead ends: 20843 [2022-02-15 12:25:22,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2494 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=976, Invalid=6680, Unknown=0, NotChecked=0, Total=7656 [2022-02-15 12:25:22,941 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 545 mSDsluCounter, 2342 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 2377 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:25:22,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 2377 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:25:22,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20843 states. [2022-02-15 12:25:23,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20843 to 11889. [2022-02-15 12:25:23,148 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) [2022-02-15 12:25:23,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11889 states to 11889 states and 35037 transitions. [2022-02-15 12:25:23,171 INFO L78 Accepts]: Start accepts. Automaton has 11889 states and 35037 transitions. Word has length 70 [2022-02-15 12:25:23,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:25:23,172 INFO L470 AbstractCegarLoop]: Abstraction has 11889 states and 35037 transitions. [2022-02-15 12:25:23,172 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) [2022-02-15 12:25:23,172 INFO L276 IsEmpty]: Start isEmpty. Operand 11889 states and 35037 transitions. [2022-02-15 12:25:23,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:25:23,187 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:25:23,187 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] [2022-02-15 12:25:23,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2022-02-15 12:25:23,387 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 [2022-02-15 12:25:23,388 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:25:23,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:25:23,388 INFO L85 PathProgramCache]: Analyzing trace with hash -866153785, now seen corresponding path program 134 times [2022-02-15 12:25:23,388 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:25:23,388 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392358297] [2022-02-15 12:25:23,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:25:23,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:25:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:25:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:23,528 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:25:23,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392358297] [2022-02-15 12:25:23,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392358297] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:25:23,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134171130] [2022-02-15 12:25:23,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:25:23,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:25:23,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:25:23,530 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) [2022-02-15 12:25:23,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-02-15 12:25:23,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:25:23,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:25:23,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:25:23,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:25:23,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:23,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:25:24,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:24,409 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134171130] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:25:24,409 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:25:24,409 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-02-15 12:25:24,409 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276474141] [2022-02-15 12:25:24,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:25:24,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-15 12:25:24,409 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:25:24,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-15 12:25:24,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 12:25:24,410 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) [2022-02-15 12:25:26,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:25:26,084 INFO L93 Difference]: Finished difference Result 21857 states and 64947 transitions. [2022-02-15 12:25:26,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-15 12:25:26,084 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 [2022-02-15 12:25:26,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:25:26,125 INFO L225 Difference]: With dead ends: 21857 [2022-02-15 12:25:26,126 INFO L226 Difference]: Without dead ends: 21691 [2022-02-15 12:25:26,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2293 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1037, Invalid=6103, Unknown=0, NotChecked=0, Total=7140 [2022-02-15 12:25:26,127 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 472 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:25:26,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 2425 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:25:26,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21691 states. [2022-02-15 12:25:26,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21691 to 11861. [2022-02-15 12:25:26,445 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) [2022-02-15 12:25:26,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11861 states to 11861 states and 34972 transitions. [2022-02-15 12:25:26,466 INFO L78 Accepts]: Start accepts. Automaton has 11861 states and 34972 transitions. Word has length 70 [2022-02-15 12:25:26,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:25:26,466 INFO L470 AbstractCegarLoop]: Abstraction has 11861 states and 34972 transitions. [2022-02-15 12:25:26,466 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) [2022-02-15 12:25:26,466 INFO L276 IsEmpty]: Start isEmpty. Operand 11861 states and 34972 transitions. [2022-02-15 12:25:26,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:25:26,481 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:25:26,481 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] [2022-02-15 12:25:26,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Ended with exit code 0 [2022-02-15 12:25:26,681 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 [2022-02-15 12:25:26,682 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:25:26,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:25:26,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1964973657, now seen corresponding path program 135 times [2022-02-15 12:25:26,682 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:25:26,682 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015960624] [2022-02-15 12:25:26,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:25:26,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:25:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:25:26,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:26,831 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:25:26,831 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015960624] [2022-02-15 12:25:26,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015960624] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:25:26,831 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973824908] [2022-02-15 12:25:26,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:25:26,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:25:26,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:25:26,833 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) [2022-02-15 12:25:26,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-02-15 12:25:26,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-15 12:25:26,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:25:26,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:25:26,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:25:27,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:27,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:25:27,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:27,734 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973824908] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:25:27,734 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:25:27,734 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-02-15 12:25:27,734 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133370790] [2022-02-15 12:25:27,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:25:27,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-15 12:25:27,734 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:25:27,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-15 12:25:27,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1043, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 12:25:27,735 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) [2022-02-15 12:25:29,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:25:29,387 INFO L93 Difference]: Finished difference Result 14438 states and 41939 transitions. [2022-02-15 12:25:29,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-15 12:25:29,387 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 [2022-02-15 12:25:29,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:25:29,415 INFO L225 Difference]: With dead ends: 14438 [2022-02-15 12:25:29,415 INFO L226 Difference]: Without dead ends: 14321 [2022-02-15 12:25:29,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1911 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=812, Invalid=5508, Unknown=0, NotChecked=0, Total=6320 [2022-02-15 12:25:29,416 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 476 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 2416 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:25:29,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 2416 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:25:29,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14321 states. [2022-02-15 12:25:29,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14321 to 11965. [2022-02-15 12:25:29,587 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) [2022-02-15 12:25:29,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11965 states to 11965 states and 35278 transitions. [2022-02-15 12:25:29,615 INFO L78 Accepts]: Start accepts. Automaton has 11965 states and 35278 transitions. Word has length 70 [2022-02-15 12:25:29,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:25:29,615 INFO L470 AbstractCegarLoop]: Abstraction has 11965 states and 35278 transitions. [2022-02-15 12:25:29,615 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) [2022-02-15 12:25:29,615 INFO L276 IsEmpty]: Start isEmpty. Operand 11965 states and 35278 transitions. [2022-02-15 12:25:29,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:25:29,631 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:25:29,631 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] [2022-02-15 12:25:29,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Forceful destruction successful, exit code 0 [2022-02-15 12:25:29,831 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 [2022-02-15 12:25:29,831 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:25:29,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:25:29,831 INFO L85 PathProgramCache]: Analyzing trace with hash 866725193, now seen corresponding path program 136 times [2022-02-15 12:25:29,831 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:25:29,831 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656475677] [2022-02-15 12:25:29,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:25:29,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:25:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:25:29,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:29,958 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:25:29,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656475677] [2022-02-15 12:25:29,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656475677] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:25:29,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923971956] [2022-02-15 12:25:29,958 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:25:29,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:25:29,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:25:29,959 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) [2022-02-15 12:25:29,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-02-15 12:25:30,085 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:25:30,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:25:30,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-15 12:25:30,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:25:30,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:30,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:25:30,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:30,729 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923971956] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:25:30,729 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:25:30,729 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:25:30,729 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499774611] [2022-02-15 12:25:30,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:25:30,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:25:30,729 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:25:30,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:25:30,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:25:30,730 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) [2022-02-15 12:25:32,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:25:32,433 INFO L93 Difference]: Finished difference Result 14444 states and 42080 transitions. [2022-02-15 12:25:32,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-15 12:25:32,433 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 [2022-02-15 12:25:32,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:25:32,460 INFO L225 Difference]: With dead ends: 14444 [2022-02-15 12:25:32,461 INFO L226 Difference]: Without dead ends: 14354 [2022-02-15 12:25:32,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2297 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1034, Invalid=6106, Unknown=0, NotChecked=0, Total=7140 [2022-02-15 12:25:32,461 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 501 mSDsluCounter, 2599 mSDsCounter, 0 mSdLazyCounter, 1473 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 2619 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:25:32,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 2619 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1473 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:25:32,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14354 states. [2022-02-15 12:25:32,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14354 to 11997. [2022-02-15 12:25:32,635 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) [2022-02-15 12:25:32,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11997 states to 11997 states and 35374 transitions. [2022-02-15 12:25:32,661 INFO L78 Accepts]: Start accepts. Automaton has 11997 states and 35374 transitions. Word has length 70 [2022-02-15 12:25:32,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:25:32,661 INFO L470 AbstractCegarLoop]: Abstraction has 11997 states and 35374 transitions. [2022-02-15 12:25:32,661 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) [2022-02-15 12:25:32,661 INFO L276 IsEmpty]: Start isEmpty. Operand 11997 states and 35374 transitions. [2022-02-15 12:25:32,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:25:32,678 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:25:32,678 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] [2022-02-15 12:25:32,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Ended with exit code 0 [2022-02-15 12:25:32,878 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 [2022-02-15 12:25:32,878 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:25:32,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:25:32,878 INFO L85 PathProgramCache]: Analyzing trace with hash -98963187, now seen corresponding path program 137 times [2022-02-15 12:25:32,879 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:25:32,879 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717001627] [2022-02-15 12:25:32,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:25:32,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:25:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:25:33,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:33,003 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:25:33,003 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717001627] [2022-02-15 12:25:33,003 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717001627] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:25:33,003 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190700311] [2022-02-15 12:25:33,003 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:25:33,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:25:33,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:25:33,004 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) [2022-02-15 12:25:33,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-02-15 12:25:33,132 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 12:25:33,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:25:33,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:25:33,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:25:33,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:33,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:25:33,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:33,835 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190700311] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:25:33,835 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:25:33,835 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-02-15 12:25:33,836 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382876872] [2022-02-15 12:25:33,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:25:33,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:25:33,836 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:25:33,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:25:33,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=900, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:25:33,837 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) [2022-02-15 12:25:35,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:25:35,444 INFO L93 Difference]: Finished difference Result 16331 states and 48156 transitions. [2022-02-15 12:25:35,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-15 12:25:35,444 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 [2022-02-15 12:25:35,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:25:35,475 INFO L225 Difference]: With dead ends: 16331 [2022-02-15 12:25:35,475 INFO L226 Difference]: Without dead ends: 16245 [2022-02-15 12:25:35,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2524 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1375, Invalid=6107, Unknown=0, NotChecked=0, Total=7482 [2022-02-15 12:25:35,477 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 544 mSDsluCounter, 2025 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 2075 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:25:35,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 2075 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:25:35,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16245 states. [2022-02-15 12:25:35,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16245 to 12441. [2022-02-15 12:25:35,684 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) [2022-02-15 12:25:35,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12441 states to 12441 states and 36771 transitions. [2022-02-15 12:25:35,712 INFO L78 Accepts]: Start accepts. Automaton has 12441 states and 36771 transitions. Word has length 70 [2022-02-15 12:25:35,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:25:35,712 INFO L470 AbstractCegarLoop]: Abstraction has 12441 states and 36771 transitions. [2022-02-15 12:25:35,712 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) [2022-02-15 12:25:35,712 INFO L276 IsEmpty]: Start isEmpty. Operand 12441 states and 36771 transitions. [2022-02-15 12:25:35,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:25:35,778 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:25:35,778 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] [2022-02-15 12:25:35,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Forceful destruction successful, exit code 0 [2022-02-15 12:25:35,978 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 [2022-02-15 12:25:35,978 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:25:35,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:25:35,979 INFO L85 PathProgramCache]: Analyzing trace with hash 133632917, now seen corresponding path program 138 times [2022-02-15 12:25:35,979 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:25:35,979 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317465749] [2022-02-15 12:25:35,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:25:35,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:25:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:25:36,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:36,110 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:25:36,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317465749] [2022-02-15 12:25:36,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317465749] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:25:36,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943285562] [2022-02-15 12:25:36,110 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:25:36,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:25:36,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:25:36,111 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) [2022-02-15 12:25:36,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-02-15 12:25:36,239 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-15 12:25:36,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:25:36,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:25:36,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:25:36,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:36,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:25:37,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:37,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943285562] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:25:37,015 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:25:37,015 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-02-15 12:25:37,015 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549389642] [2022-02-15 12:25:37,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:25:37,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:25:37,015 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:25:37,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:25:37,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:25:37,016 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) [2022-02-15 12:25:40,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:25:40,139 INFO L93 Difference]: Finished difference Result 15186 states and 44456 transitions. [2022-02-15 12:25:40,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-15 12:25:40,139 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 [2022-02-15 12:25:40,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:25:40,167 INFO L225 Difference]: With dead ends: 15186 [2022-02-15 12:25:40,168 INFO L226 Difference]: Without dead ends: 14980 [2022-02-15 12:25:40,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3073 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1259, Invalid=8641, Unknown=0, NotChecked=0, Total=9900 [2022-02-15 12:25:40,169 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 419 mSDsluCounter, 3608 mSDsCounter, 0 mSdLazyCounter, 1822 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 3625 SdHoareTripleChecker+Invalid, 1878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:25:40,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 3625 Invalid, 1878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1822 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:25:40,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14980 states. [2022-02-15 12:25:40,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14980 to 12509. [2022-02-15 12:25:40,354 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) [2022-02-15 12:25:40,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12509 states to 12509 states and 36962 transitions. [2022-02-15 12:25:40,381 INFO L78 Accepts]: Start accepts. Automaton has 12509 states and 36962 transitions. Word has length 70 [2022-02-15 12:25:40,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:25:40,381 INFO L470 AbstractCegarLoop]: Abstraction has 12509 states and 36962 transitions. [2022-02-15 12:25:40,381 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) [2022-02-15 12:25:40,381 INFO L276 IsEmpty]: Start isEmpty. Operand 12509 states and 36962 transitions. [2022-02-15 12:25:40,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:25:40,399 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:25:40,400 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, 1, 1, 1, 1] [2022-02-15 12:25:40,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Ended with exit code 0 [2022-02-15 12:25:40,600 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 [2022-02-15 12:25:40,600 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:25:40,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:25:40,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1883448011, now seen corresponding path program 139 times [2022-02-15 12:25:40,601 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:25:40,601 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822914282] [2022-02-15 12:25:40,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:25:40,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:25:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:25:40,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:40,725 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:25:40,725 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822914282] [2022-02-15 12:25:40,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822914282] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:25:40,725 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599844325] [2022-02-15 12:25:40,725 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:25:40,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:25:40,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:25:40,726 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) [2022-02-15 12:25:40,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-02-15 12:25:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:25:40,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:25:40,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:25:41,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:41,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:25:41,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:41,667 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599844325] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:25:41,667 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:25:41,667 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-02-15 12:25:41,667 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533120305] [2022-02-15 12:25:41,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:25:41,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:25:41,667 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:25:41,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:25:41,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=938, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:25:41,667 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) [2022-02-15 12:25:45,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:25:45,038 INFO L93 Difference]: Finished difference Result 16083 states and 47002 transitions. [2022-02-15 12:25:45,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-15 12:25:45,039 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 [2022-02-15 12:25:45,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:25:45,071 INFO L225 Difference]: With dead ends: 16083 [2022-02-15 12:25:45,072 INFO L226 Difference]: Without dead ends: 15900 [2022-02-15 12:25:45,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3750 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1507, Invalid=10049, Unknown=0, NotChecked=0, Total=11556 [2022-02-15 12:25:45,073 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 472 mSDsluCounter, 2632 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:25:45,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 2673 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:25:45,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15900 states. [2022-02-15 12:25:45,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15900 to 12681. [2022-02-15 12:25:45,276 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) [2022-02-15 12:25:45,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12681 states to 12681 states and 37451 transitions. [2022-02-15 12:25:45,306 INFO L78 Accepts]: Start accepts. Automaton has 12681 states and 37451 transitions. Word has length 70 [2022-02-15 12:25:45,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:25:45,306 INFO L470 AbstractCegarLoop]: Abstraction has 12681 states and 37451 transitions. [2022-02-15 12:25:45,306 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) [2022-02-15 12:25:45,306 INFO L276 IsEmpty]: Start isEmpty. Operand 12681 states and 37451 transitions. [2022-02-15 12:25:45,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:25:45,327 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:25:45,327 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] [2022-02-15 12:25:45,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Forceful destruction successful, exit code 0 [2022-02-15 12:25:45,527 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 [2022-02-15 12:25:45,527 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:25:45,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:25:45,528 INFO L85 PathProgramCache]: Analyzing trace with hash 728183623, now seen corresponding path program 140 times [2022-02-15 12:25:45,528 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:25:45,528 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324694505] [2022-02-15 12:25:45,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:25:45,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:25:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:25:45,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:45,660 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:25:45,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324694505] [2022-02-15 12:25:45,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324694505] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:25:45,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31645151] [2022-02-15 12:25:45,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:25:45,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:25:45,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:25:45,661 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) [2022-02-15 12:25:45,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-02-15 12:25:45,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:25:45,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:25:45,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:25:45,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:25:46,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:46,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:25:46,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:46,555 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31645151] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:25:46,555 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:25:46,555 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-02-15 12:25:46,555 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388431985] [2022-02-15 12:25:46,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:25:46,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:25:46,556 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:25:46,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:25:46,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:25:46,556 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) [2022-02-15 12:25:51,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:25:51,150 INFO L93 Difference]: Finished difference Result 17930 states and 52560 transitions. [2022-02-15 12:25:51,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-02-15 12:25:51,150 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 [2022-02-15 12:25:51,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:25:51,184 INFO L225 Difference]: With dead ends: 17930 [2022-02-15 12:25:51,185 INFO L226 Difference]: Without dead ends: 17844 [2022-02-15 12:25:51,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6380 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2695, Invalid=15395, Unknown=0, NotChecked=0, Total=18090 [2022-02-15 12:25:51,187 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 617 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:25:51,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 2725 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1630 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:25:51,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17844 states. [2022-02-15 12:25:51,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17844 to 12541. [2022-02-15 12:25:51,418 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) [2022-02-15 12:25:51,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12541 states to 12541 states and 37030 transitions. [2022-02-15 12:25:51,444 INFO L78 Accepts]: Start accepts. Automaton has 12541 states and 37030 transitions. Word has length 70 [2022-02-15 12:25:51,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:25:51,445 INFO L470 AbstractCegarLoop]: Abstraction has 12541 states and 37030 transitions. [2022-02-15 12:25:51,445 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) [2022-02-15 12:25:51,445 INFO L276 IsEmpty]: Start isEmpty. Operand 12541 states and 37030 transitions. [2022-02-15 12:25:51,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 12:25:51,464 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:25:51,464 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] [2022-02-15 12:25:51,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Ended with exit code 0 [2022-02-15 12:25:51,664 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 [2022-02-15 12:25:51,664 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:25:51,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:25:51,664 INFO L85 PathProgramCache]: Analyzing trace with hash 225332551, now seen corresponding path program 141 times [2022-02-15 12:25:51,665 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:25:51,665 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232096871] [2022-02-15 12:25:51,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:25:51,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:25:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:25:51,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:51,785 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:25:51,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232096871] [2022-02-15 12:25:51,785 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232096871] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:25:51,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068722078] [2022-02-15 12:25:51,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:25:51,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:25:51,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:25:51,786 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) [2022-02-15 12:25:51,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2022-02-15 12:25:51,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-15 12:25:51,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:25:51,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-15 12:25:51,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:25:52,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:52,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:25:52,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:52,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068722078] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:25:52,669 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:25:52,669 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-02-15 12:25:52,669 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580262465] [2022-02-15 12:25:52,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:25:52,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-15 12:25:52,669 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:25:52,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-15 12:25:52,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 12:25:52,670 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) [2022-02-15 12:25:57,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:25:57,068 INFO L93 Difference]: Finished difference Result 16321 states and 47667 transitions. [2022-02-15 12:25:57,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-02-15 12:25:57,068 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 [2022-02-15 12:25:57,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:25:57,098 INFO L225 Difference]: With dead ends: 16321 [2022-02-15 12:25:57,098 INFO L226 Difference]: Without dead ends: 16138 [2022-02-15 12:25:57,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5234 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2371, Invalid=12881, Unknown=0, NotChecked=0, Total=15252 [2022-02-15 12:25:57,100 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 566 mSDsluCounter, 3147 mSDsCounter, 0 mSdLazyCounter, 1814 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 1888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:25:57,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 3181 Invalid, 1888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1814 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:25:57,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16138 states. [2022-02-15 12:25:57,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16138 to 12657. [2022-02-15 12:25:57,300 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) [2022-02-15 12:25:57,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12657 states to 12657 states and 37361 transitions. [2022-02-15 12:25:57,327 INFO L78 Accepts]: Start accepts. Automaton has 12657 states and 37361 transitions. Word has length 70 [2022-02-15 12:25:57,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:25:57,327 INFO L470 AbstractCegarLoop]: Abstraction has 12657 states and 37361 transitions. [2022-02-15 12:25:57,327 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) [2022-02-15 12:25:57,327 INFO L276 IsEmpty]: Start isEmpty. Operand 12657 states and 37361 transitions. [2022-02-15 12:25:57,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-15 12:25:57,346 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:25:57,346 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] [2022-02-15 12:25:57,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Ended with exit code 0 [2022-02-15 12:25:57,546 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 [2022-02-15 12:25:57,546 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:25:57,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:25:57,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1700585577, now seen corresponding path program 142 times [2022-02-15 12:25:57,547 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:25:57,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253287917] [2022-02-15 12:25:57,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:25:57,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:25:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:25:57,587 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:57,587 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:25:57,587 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253287917] [2022-02-15 12:25:57,587 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253287917] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:25:57,587 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498889374] [2022-02-15 12:25:57,588 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:25:57,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:25:57,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:25:57,589 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) [2022-02-15 12:25:57,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2022-02-15 12:25:57,718 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:25:57,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:25:57,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 12:25:57,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:25:57,807 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:57,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:25:57,947 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:57,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498889374] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:25:57,947 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:25:57,947 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-15 12:25:57,947 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704226950] [2022-02-15 12:25:57,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:25:57,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 12:25:57,947 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:25:57,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 12:25:57,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-02-15 12:25:57,948 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) [2022-02-15 12:25:58,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:25:58,324 INFO L93 Difference]: Finished difference Result 14135 states and 41295 transitions. [2022-02-15 12:25:58,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 12:25:58,324 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 [2022-02-15 12:25:58,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:25:58,352 INFO L225 Difference]: With dead ends: 14135 [2022-02-15 12:25:58,352 INFO L226 Difference]: Without dead ends: 14135 [2022-02-15 12:25:58,353 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 [2022-02-15 12:25:58,353 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 224 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:25:58,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 1097 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:25:58,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14135 states. [2022-02-15 12:25:58,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14135 to 12801. [2022-02-15 12:25:58,642 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) [2022-02-15 12:25:58,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12801 states to 12801 states and 37781 transitions. [2022-02-15 12:25:58,680 INFO L78 Accepts]: Start accepts. Automaton has 12801 states and 37781 transitions. Word has length 74 [2022-02-15 12:25:58,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:25:58,680 INFO L470 AbstractCegarLoop]: Abstraction has 12801 states and 37781 transitions. [2022-02-15 12:25:58,680 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) [2022-02-15 12:25:58,681 INFO L276 IsEmpty]: Start isEmpty. Operand 12801 states and 37781 transitions. [2022-02-15 12:25:58,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-15 12:25:58,706 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:25:58,706 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] [2022-02-15 12:25:58,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Forceful destruction successful, exit code 0 [2022-02-15 12:25:58,908 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 [2022-02-15 12:25:58,908 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:25:58,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:25:58,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1759323673, now seen corresponding path program 143 times [2022-02-15 12:25:58,909 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:25:58,909 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118671429] [2022-02-15 12:25:58,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:25:58,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:25:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:25:58,956 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:58,957 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:25:58,957 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118671429] [2022-02-15 12:25:58,957 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118671429] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:25:58,957 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416736379] [2022-02-15 12:25:58,957 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:25:58,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:25:58,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:25:58,958 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) [2022-02-15 12:25:58,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-02-15 12:25:59,090 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-15 12:25:59,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:25:59,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 12:25:59,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:25:59,179 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:59,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:25:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:25:59,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416736379] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:25:59,316 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:25:59,316 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-15 12:25:59,316 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437409704] [2022-02-15 12:25:59,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:25:59,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 12:25:59,316 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:25:59,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 12:25:59,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-02-15 12:25:59,317 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) [2022-02-15 12:25:59,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:25:59,829 INFO L93 Difference]: Finished difference Result 14181 states and 41374 transitions. [2022-02-15 12:25:59,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 12:25:59,829 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 [2022-02-15 12:25:59,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:25:59,856 INFO L225 Difference]: With dead ends: 14181 [2022-02-15 12:25:59,857 INFO L226 Difference]: Without dead ends: 14181 [2022-02-15 12:25:59,857 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 [2022-02-15 12:25:59,857 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 346 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:25:59,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 1061 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:25:59,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14181 states. [2022-02-15 12:26:00,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14181 to 12857. [2022-02-15 12:26:00,043 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) [2022-02-15 12:26:00,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12857 states to 12857 states and 37943 transitions. [2022-02-15 12:26:00,072 INFO L78 Accepts]: Start accepts. Automaton has 12857 states and 37943 transitions. Word has length 74 [2022-02-15 12:26:00,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:26:00,072 INFO L470 AbstractCegarLoop]: Abstraction has 12857 states and 37943 transitions. [2022-02-15 12:26:00,072 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) [2022-02-15 12:26:00,072 INFO L276 IsEmpty]: Start isEmpty. Operand 12857 states and 37943 transitions. [2022-02-15 12:26:00,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-15 12:26:00,092 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:26:00,092 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] [2022-02-15 12:26:00,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Forceful destruction successful, exit code 0 [2022-02-15 12:26:00,292 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 [2022-02-15 12:26:00,292 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:26:00,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:26:00,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1130358979, now seen corresponding path program 144 times [2022-02-15 12:26:00,293 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:26:00,293 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960618002] [2022-02-15 12:26:00,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:26:00,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:26:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:26:00,330 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:00,331 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:26:00,331 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960618002] [2022-02-15 12:26:00,331 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960618002] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:26:00,331 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910577158] [2022-02-15 12:26:00,331 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:26:00,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:26:00,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:26:00,332 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) [2022-02-15 12:26:00,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2022-02-15 12:26:00,462 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-15 12:26:00,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:26:00,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 12:26:00,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:26:00,550 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:00,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:26:00,678 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:00,678 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910577158] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:26:00,678 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:26:00,679 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-02-15 12:26:00,679 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682433005] [2022-02-15 12:26:00,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:26:00,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 12:26:00,679 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:26:00,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 12:26:00,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-02-15 12:26:00,679 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) [2022-02-15 12:26:00,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:26:00,977 INFO L93 Difference]: Finished difference Result 14088 states and 41318 transitions. [2022-02-15 12:26:00,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 12:26:00,977 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 [2022-02-15 12:26:00,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:26:01,004 INFO L225 Difference]: With dead ends: 14088 [2022-02-15 12:26:01,004 INFO L226 Difference]: Without dead ends: 14088 [2022-02-15 12:26:01,004 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 [2022-02-15 12:26:01,005 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 263 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:26:01,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 961 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:26:01,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14088 states. [2022-02-15 12:26:01,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14088 to 12465. [2022-02-15 12:26:01,182 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) [2022-02-15 12:26:01,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12465 states to 12465 states and 36862 transitions. [2022-02-15 12:26:01,210 INFO L78 Accepts]: Start accepts. Automaton has 12465 states and 36862 transitions. Word has length 74 [2022-02-15 12:26:01,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:26:01,210 INFO L470 AbstractCegarLoop]: Abstraction has 12465 states and 36862 transitions. [2022-02-15 12:26:01,210 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) [2022-02-15 12:26:01,210 INFO L276 IsEmpty]: Start isEmpty. Operand 12465 states and 36862 transitions. [2022-02-15 12:26:01,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-15 12:26:01,230 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:26:01,230 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] [2022-02-15 12:26:01,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Forceful destruction successful, exit code 0 [2022-02-15 12:26:01,430 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 [2022-02-15 12:26:01,430 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:26:01,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:26:01,431 INFO L85 PathProgramCache]: Analyzing trace with hash -525314691, now seen corresponding path program 145 times [2022-02-15 12:26:01,431 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:26:01,431 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932822023] [2022-02-15 12:26:01,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:26:01,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:26:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:26:01,469 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:01,469 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:26:01,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932822023] [2022-02-15 12:26:01,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932822023] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:26:01,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639861645] [2022-02-15 12:26:01,469 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:26:01,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:26:01,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:26:01,470 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) [2022-02-15 12:26:01,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-02-15 12:26:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:26:01,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 12:26:01,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:26:01,730 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:01,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:26:01,871 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:01,871 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639861645] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:26:01,871 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:26:01,871 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-15 12:26:01,871 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311916066] [2022-02-15 12:26:01,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:26:01,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 12:26:01,871 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:26:01,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 12:26:01,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-02-15 12:26:01,872 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) [2022-02-15 12:26:02,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:26:02,153 INFO L93 Difference]: Finished difference Result 13302 states and 38964 transitions. [2022-02-15 12:26:02,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 12:26:02,154 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 [2022-02-15 12:26:02,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:26:02,179 INFO L225 Difference]: With dead ends: 13302 [2022-02-15 12:26:02,179 INFO L226 Difference]: Without dead ends: 13266 [2022-02-15 12:26:02,180 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 [2022-02-15 12:26:02,180 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 234 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:26:02,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 787 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:26:02,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13266 states. [2022-02-15 12:26:02,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13266 to 12133. [2022-02-15 12:26:02,344 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) [2022-02-15 12:26:02,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12133 states to 12133 states and 35873 transitions. [2022-02-15 12:26:02,369 INFO L78 Accepts]: Start accepts. Automaton has 12133 states and 35873 transitions. Word has length 74 [2022-02-15 12:26:02,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:26:02,369 INFO L470 AbstractCegarLoop]: Abstraction has 12133 states and 35873 transitions. [2022-02-15 12:26:02,369 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) [2022-02-15 12:26:02,369 INFO L276 IsEmpty]: Start isEmpty. Operand 12133 states and 35873 transitions. [2022-02-15 12:26:02,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-15 12:26:02,385 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:26:02,385 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] [2022-02-15 12:26:02,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Forceful destruction successful, exit code 0 [2022-02-15 12:26:02,585 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 [2022-02-15 12:26:02,586 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:26:02,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:26:02,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1963115701, now seen corresponding path program 146 times [2022-02-15 12:26:02,586 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:26:02,586 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072485750] [2022-02-15 12:26:02,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:26:02,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:26:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:26:02,624 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:02,624 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:26:02,624 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072485750] [2022-02-15 12:26:02,625 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072485750] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:26:02,625 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712425510] [2022-02-15 12:26:02,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:26:02,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:26:02,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:26:02,626 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) [2022-02-15 12:26:02,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-02-15 12:26:02,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:26:02,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:26:02,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 12:26:02,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:26:02,847 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:02,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:26:02,984 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:02,984 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712425510] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:26:02,984 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:26:02,984 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-15 12:26:02,984 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241727490] [2022-02-15 12:26:02,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:26:02,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 12:26:02,985 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:26:02,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 12:26:02,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-15 12:26:02,985 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) [2022-02-15 12:26:03,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:26:03,365 INFO L93 Difference]: Finished difference Result 13672 states and 39905 transitions. [2022-02-15 12:26:03,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 12:26:03,365 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 [2022-02-15 12:26:03,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:26:03,388 INFO L225 Difference]: With dead ends: 13672 [2022-02-15 12:26:03,388 INFO L226 Difference]: Without dead ends: 13672 [2022-02-15 12:26:03,388 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 [2022-02-15 12:26:03,388 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 325 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:26:03,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 909 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:26:03,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13672 states. [2022-02-15 12:26:03,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13672 to 11773. [2022-02-15 12:26:03,546 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) [2022-02-15 12:26:03,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11773 states to 11773 states and 34763 transitions. [2022-02-15 12:26:03,570 INFO L78 Accepts]: Start accepts. Automaton has 11773 states and 34763 transitions. Word has length 74 [2022-02-15 12:26:03,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:26:03,570 INFO L470 AbstractCegarLoop]: Abstraction has 11773 states and 34763 transitions. [2022-02-15 12:26:03,570 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) [2022-02-15 12:26:03,570 INFO L276 IsEmpty]: Start isEmpty. Operand 11773 states and 34763 transitions. [2022-02-15 12:26:03,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-15 12:26:03,586 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:26:03,586 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] [2022-02-15 12:26:03,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Forceful destruction successful, exit code 0 [2022-02-15 12:26:03,786 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 [2022-02-15 12:26:03,786 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:26:03,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:26:03,787 INFO L85 PathProgramCache]: Analyzing trace with hash -433839251, now seen corresponding path program 147 times [2022-02-15 12:26:03,787 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:26:03,787 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391615450] [2022-02-15 12:26:03,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:26:03,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:26:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:26:03,825 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:03,825 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:26:03,825 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391615450] [2022-02-15 12:26:03,825 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391615450] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:26:03,825 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972485265] [2022-02-15 12:26:03,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:26:03,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:26:03,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:26:03,826 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) [2022-02-15 12:26:03,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2022-02-15 12:26:03,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-15 12:26:03,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:26:03,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 12:26:03,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:26:04,046 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:04,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:26:04,170 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:04,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972485265] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:26:04,170 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:26:04,171 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-15 12:26:04,171 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018954389] [2022-02-15 12:26:04,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:26:04,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 12:26:04,171 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:26:04,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 12:26:04,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-15 12:26:04,171 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) [2022-02-15 12:26:04,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:26:04,554 INFO L93 Difference]: Finished difference Result 12670 states and 37013 transitions. [2022-02-15 12:26:04,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 12:26:04,554 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 [2022-02-15 12:26:04,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:26:04,575 INFO L225 Difference]: With dead ends: 12670 [2022-02-15 12:26:04,575 INFO L226 Difference]: Without dead ends: 12634 [2022-02-15 12:26:04,575 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 [2022-02-15 12:26:04,576 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 226 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:26:04,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 931 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:26:04,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12634 states. [2022-02-15 12:26:04,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12634 to 11469. [2022-02-15 12:26:04,741 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) [2022-02-15 12:26:04,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11469 states to 11469 states and 33843 transitions. [2022-02-15 12:26:04,847 INFO L78 Accepts]: Start accepts. Automaton has 11469 states and 33843 transitions. Word has length 74 [2022-02-15 12:26:04,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:26:04,847 INFO L470 AbstractCegarLoop]: Abstraction has 11469 states and 33843 transitions. [2022-02-15 12:26:04,847 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) [2022-02-15 12:26:04,847 INFO L276 IsEmpty]: Start isEmpty. Operand 11469 states and 33843 transitions. [2022-02-15 12:26:04,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-15 12:26:04,862 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:26:04,862 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] [2022-02-15 12:26:04,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Forceful destruction successful, exit code 0 [2022-02-15 12:26:05,062 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 [2022-02-15 12:26:05,063 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:26:05,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:26:05,063 INFO L85 PathProgramCache]: Analyzing trace with hash -2118918771, now seen corresponding path program 148 times [2022-02-15 12:26:05,063 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:26:05,063 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565070044] [2022-02-15 12:26:05,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:26:05,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:26:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:26:05,101 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:05,101 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:26:05,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565070044] [2022-02-15 12:26:05,101 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565070044] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:26:05,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276916363] [2022-02-15 12:26:05,101 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:26:05,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:26:05,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:26:05,103 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) [2022-02-15 12:26:05,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2022-02-15 12:26:05,234 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:26:05,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:26:05,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 12:26:05,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:26:05,321 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:05,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:26:05,447 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:05,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276916363] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:26:05,447 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:26:05,447 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-15 12:26:05,447 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426394206] [2022-02-15 12:26:05,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:26:05,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 12:26:05,448 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:26:05,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 12:26:05,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-02-15 12:26:05,448 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) [2022-02-15 12:26:05,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:26:05,797 INFO L93 Difference]: Finished difference Result 12266 states and 35915 transitions. [2022-02-15 12:26:05,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 12:26:05,798 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 [2022-02-15 12:26:05,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:26:05,820 INFO L225 Difference]: With dead ends: 12266 [2022-02-15 12:26:05,821 INFO L226 Difference]: Without dead ends: 12230 [2022-02-15 12:26:05,821 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 [2022-02-15 12:26:05,821 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 222 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:26:05,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 912 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:26:05,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12230 states. [2022-02-15 12:26:05,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12230 to 11513. [2022-02-15 12:26:05,996 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) [2022-02-15 12:26:06,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11513 states to 11513 states and 33976 transitions. [2022-02-15 12:26:06,020 INFO L78 Accepts]: Start accepts. Automaton has 11513 states and 33976 transitions. Word has length 74 [2022-02-15 12:26:06,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:26:06,021 INFO L470 AbstractCegarLoop]: Abstraction has 11513 states and 33976 transitions. [2022-02-15 12:26:06,021 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) [2022-02-15 12:26:06,021 INFO L276 IsEmpty]: Start isEmpty. Operand 11513 states and 33976 transitions. [2022-02-15 12:26:06,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-15 12:26:06,037 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:26:06,037 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] [2022-02-15 12:26:06,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Ended with exit code 0 [2022-02-15 12:26:06,237 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 [2022-02-15 12:26:06,237 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:26:06,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:26:06,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1069541713, now seen corresponding path program 149 times [2022-02-15 12:26:06,238 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:26:06,238 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741118682] [2022-02-15 12:26:06,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:26:06,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:26:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:26:06,275 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:06,276 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:26:06,276 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741118682] [2022-02-15 12:26:06,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741118682] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:26:06,276 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369193537] [2022-02-15 12:26:06,276 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:26:06,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:26:06,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:26:06,277 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) [2022-02-15 12:26:06,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2022-02-15 12:26:06,410 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 12:26:06,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:26:06,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 12:26:06,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:26:06,500 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:06,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:26:06,626 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:06,626 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369193537] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:26:06,626 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:26:06,626 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-15 12:26:06,626 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69549119] [2022-02-15 12:26:06,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:26:06,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 12:26:06,626 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:26:06,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 12:26:06,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-02-15 12:26:06,627 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) [2022-02-15 12:26:07,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:26:07,113 INFO L93 Difference]: Finished difference Result 12402 states and 36248 transitions. [2022-02-15 12:26:07,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 12:26:07,113 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 [2022-02-15 12:26:07,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:26:07,135 INFO L225 Difference]: With dead ends: 12402 [2022-02-15 12:26:07,136 INFO L226 Difference]: Without dead ends: 12366 [2022-02-15 12:26:07,136 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 [2022-02-15 12:26:07,136 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 241 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:26:07,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 1018 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:26:07,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12366 states. [2022-02-15 12:26:07,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12366 to 11481. [2022-02-15 12:26:07,290 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) [2022-02-15 12:26:07,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11481 states to 11481 states and 33872 transitions. [2022-02-15 12:26:07,312 INFO L78 Accepts]: Start accepts. Automaton has 11481 states and 33872 transitions. Word has length 74 [2022-02-15 12:26:07,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:26:07,313 INFO L470 AbstractCegarLoop]: Abstraction has 11481 states and 33872 transitions. [2022-02-15 12:26:07,313 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) [2022-02-15 12:26:07,313 INFO L276 IsEmpty]: Start isEmpty. Operand 11481 states and 33872 transitions. [2022-02-15 12:26:07,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-15 12:26:07,328 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:26:07,328 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] [2022-02-15 12:26:07,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Forceful destruction successful, exit code 0 [2022-02-15 12:26:07,528 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 [2022-02-15 12:26:07,528 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:26:07,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:26:07,528 INFO L85 PathProgramCache]: Analyzing trace with hash -374564563, now seen corresponding path program 150 times [2022-02-15 12:26:07,528 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:26:07,529 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681456132] [2022-02-15 12:26:07,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:26:07,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:26:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:26:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:07,566 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:26:07,566 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681456132] [2022-02-15 12:26:07,566 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681456132] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:26:07,566 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122264861] [2022-02-15 12:26:07,566 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:26:07,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:26:07,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:26:07,567 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) [2022-02-15 12:26:07,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2022-02-15 12:26:07,704 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-15 12:26:07,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:26:07,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 12:26:07,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:26:07,790 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:07,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:26:07,902 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:07,902 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122264861] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:26:07,902 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:26:07,902 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-02-15 12:26:07,902 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964723525] [2022-02-15 12:26:07,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:26:07,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 12:26:07,902 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:26:07,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 12:26:07,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-02-15 12:26:07,902 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) [2022-02-15 12:26:08,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:26:08,182 INFO L93 Difference]: Finished difference Result 12346 states and 36137 transitions. [2022-02-15 12:26:08,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 12:26:08,182 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 [2022-02-15 12:26:08,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:26:08,203 INFO L225 Difference]: With dead ends: 12346 [2022-02-15 12:26:08,204 INFO L226 Difference]: Without dead ends: 12298 [2022-02-15 12:26:08,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 147 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=249, Invalid=507, Unknown=0, NotChecked=0, Total=756 [2022-02-15 12:26:08,204 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 296 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:26:08,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 825 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:26:08,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12298 states. [2022-02-15 12:26:08,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12298 to 10885. [2022-02-15 12:26:08,383 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) [2022-02-15 12:26:08,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10885 states to 10885 states and 32158 transitions. [2022-02-15 12:26:08,405 INFO L78 Accepts]: Start accepts. Automaton has 10885 states and 32158 transitions. Word has length 74 [2022-02-15 12:26:08,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:26:08,405 INFO L470 AbstractCegarLoop]: Abstraction has 10885 states and 32158 transitions. [2022-02-15 12:26:08,405 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) [2022-02-15 12:26:08,405 INFO L276 IsEmpty]: Start isEmpty. Operand 10885 states and 32158 transitions. [2022-02-15 12:26:08,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-15 12:26:08,420 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:26:08,420 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] [2022-02-15 12:26:08,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Ended with exit code 0 [2022-02-15 12:26:08,620 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 [2022-02-15 12:26:08,621 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:26:08,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:26:08,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1326088179, now seen corresponding path program 151 times [2022-02-15 12:26:08,621 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:26:08,621 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615315765] [2022-02-15 12:26:08,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:26:08,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:26:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:26:08,659 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:08,659 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:26:08,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615315765] [2022-02-15 12:26:08,659 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615315765] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:26:08,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416061946] [2022-02-15 12:26:08,660 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:26:08,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:26:08,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:26:08,661 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) [2022-02-15 12:26:08,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2022-02-15 12:26:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:26:08,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-15 12:26:08,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:26:08,883 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:08,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:26:09,008 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:09,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416061946] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:26:09,008 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:26:09,008 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-02-15 12:26:09,008 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612298665] [2022-02-15 12:26:09,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:26:09,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 12:26:09,008 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:26:09,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 12:26:09,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-02-15 12:26:09,009 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) [2022-02-15 12:26:09,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:26:09,354 INFO L93 Difference]: Finished difference Result 12036 states and 35091 transitions. [2022-02-15 12:26:09,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 12:26:09,355 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 [2022-02-15 12:26:09,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:26:09,375 INFO L225 Difference]: With dead ends: 12036 [2022-02-15 12:26:09,375 INFO L226 Difference]: Without dead ends: 12036 [2022-02-15 12:26:09,376 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 [2022-02-15 12:26:09,376 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 242 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:26:09,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 1042 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:26:09,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12036 states. [2022-02-15 12:26:09,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12036 to 10669. [2022-02-15 12:26:09,514 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) [2022-02-15 12:26:09,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 31472 transitions. [2022-02-15 12:26:09,536 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 31472 transitions. Word has length 74 [2022-02-15 12:26:09,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:26:09,536 INFO L470 AbstractCegarLoop]: Abstraction has 10669 states and 31472 transitions. [2022-02-15 12:26:09,536 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) [2022-02-15 12:26:09,536 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 31472 transitions. [2022-02-15 12:26:09,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 12:26:09,550 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:26:09,550 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] [2022-02-15 12:26:09,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Forceful destruction successful, exit code 0 [2022-02-15 12:26:09,750 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 [2022-02-15 12:26:09,751 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:26:09,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:26:09,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1482324071, now seen corresponding path program 152 times [2022-02-15 12:26:09,751 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:26:09,751 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968935944] [2022-02-15 12:26:09,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:26:09,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:26:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:26:09,926 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:09,926 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:26:09,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968935944] [2022-02-15 12:26:09,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968935944] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:26:09,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405449009] [2022-02-15 12:26:09,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:26:09,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:26:09,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:26:09,927 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) [2022-02-15 12:26:09,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2022-02-15 12:26:10,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:26:10,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:26:10,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-15 12:26:10,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:26:10,429 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:10,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:26:11,145 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:11,146 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405449009] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:26:11,146 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:26:11,146 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-02-15 12:26:11,146 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280879587] [2022-02-15 12:26:11,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:26:11,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-15 12:26:11,146 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:26:11,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-15 12:26:11,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1531, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 12:26:11,147 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) [2022-02-15 12:26:12,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:26:12,946 INFO L93 Difference]: Finished difference Result 12099 states and 35409 transitions. [2022-02-15 12:26:12,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-15 12:26:12,947 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 [2022-02-15 12:26:12,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:26:12,968 INFO L225 Difference]: With dead ends: 12099 [2022-02-15 12:26:12,968 INFO L226 Difference]: Without dead ends: 11964 [2022-02-15 12:26:12,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2442 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1221, Invalid=7151, Unknown=0, NotChecked=0, Total=8372 [2022-02-15 12:26:12,970 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 496 mSDsluCounter, 3159 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 3199 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:26:12,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 3199 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:26:12,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11964 states. [2022-02-15 12:26:13,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11964 to 10721. [2022-02-15 12:26:13,150 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) [2022-02-15 12:26:13,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10721 states to 10721 states and 31607 transitions. [2022-02-15 12:26:13,171 INFO L78 Accepts]: Start accepts. Automaton has 10721 states and 31607 transitions. Word has length 78 [2022-02-15 12:26:13,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:26:13,171 INFO L470 AbstractCegarLoop]: Abstraction has 10721 states and 31607 transitions. [2022-02-15 12:26:13,171 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) [2022-02-15 12:26:13,171 INFO L276 IsEmpty]: Start isEmpty. Operand 10721 states and 31607 transitions. [2022-02-15 12:26:13,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 12:26:13,186 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:26:13,187 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] [2022-02-15 12:26:13,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Forceful destruction successful, exit code 0 [2022-02-15 12:26:13,387 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 [2022-02-15 12:26:13,387 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:26:13,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:26:13,388 INFO L85 PathProgramCache]: Analyzing trace with hash 2093402461, now seen corresponding path program 153 times [2022-02-15 12:26:13,388 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:26:13,388 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612030237] [2022-02-15 12:26:13,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:26:13,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:26:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:26:13,563 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:13,563 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:26:13,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612030237] [2022-02-15 12:26:13,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612030237] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:26:13,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309126011] [2022-02-15 12:26:13,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:26:13,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:26:13,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:26:13,565 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) [2022-02-15 12:26:13,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2022-02-15 12:26:13,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-15 12:26:13,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:26:13,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:26:13,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:26:14,020 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:26:14,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:26:14,393 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:26:14,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309126011] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:26:14,393 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:26:14,393 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-02-15 12:26:14,393 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991626185] [2022-02-15 12:26:14,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:26:14,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-15 12:26:14,393 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:26:14,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-15 12:26:14,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1202, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 12:26:14,394 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) [2022-02-15 12:26:17,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:26:17,092 INFO L93 Difference]: Finished difference Result 11808 states and 34568 transitions. [2022-02-15 12:26:17,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-15 12:26:17,092 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 [2022-02-15 12:26:17,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:26:17,111 INFO L225 Difference]: With dead ends: 11808 [2022-02-15 12:26:17,112 INFO L226 Difference]: Without dead ends: 11569 [2022-02-15 12:26:17,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4614 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1862, Invalid=13144, Unknown=0, NotChecked=0, Total=15006 [2022-02-15 12:26:17,114 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 567 mSDsluCounter, 4055 mSDsCounter, 0 mSdLazyCounter, 1911 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 4145 SdHoareTripleChecker+Invalid, 2000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:26:17,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 4145 Invalid, 2000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1911 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:26:17,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11569 states. [2022-02-15 12:26:17,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11569 to 10285. [2022-02-15 12:26:17,241 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) [2022-02-15 12:26:17,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10285 states to 10285 states and 29820 transitions. [2022-02-15 12:26:17,260 INFO L78 Accepts]: Start accepts. Automaton has 10285 states and 29820 transitions. Word has length 78 [2022-02-15 12:26:17,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:26:17,260 INFO L470 AbstractCegarLoop]: Abstraction has 10285 states and 29820 transitions. [2022-02-15 12:26:17,260 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) [2022-02-15 12:26:17,260 INFO L276 IsEmpty]: Start isEmpty. Operand 10285 states and 29820 transitions. [2022-02-15 12:26:17,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 12:26:17,273 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:26:17,273 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] [2022-02-15 12:26:17,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Forceful destruction successful, exit code 0 [2022-02-15 12:26:17,473 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 [2022-02-15 12:26:17,474 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:26:17,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:26:17,474 INFO L85 PathProgramCache]: Analyzing trace with hash -926819967, now seen corresponding path program 154 times [2022-02-15 12:26:17,474 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:26:17,474 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665617657] [2022-02-15 12:26:17,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:26:17,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:26:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:26:17,667 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:17,667 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:26:17,667 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665617657] [2022-02-15 12:26:17,667 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665617657] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:26:17,667 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494209750] [2022-02-15 12:26:17,668 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:26:17,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:26:17,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:26:17,669 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) [2022-02-15 12:26:17,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2022-02-15 12:26:17,807 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:26:17,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:26:17,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-15 12:26:17,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:26:18,260 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:18,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:26:18,869 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:18,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494209750] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:26:18,869 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:26:18,869 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2022-02-15 12:26:18,870 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592795611] [2022-02-15 12:26:18,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:26:18,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-15 12:26:18,870 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:26:18,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-15 12:26:18,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1801, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 12:26:18,870 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) [2022-02-15 12:26:21,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:26:21,500 INFO L93 Difference]: Finished difference Result 12424 states and 35711 transitions. [2022-02-15 12:26:21,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-15 12:26:21,500 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 [2022-02-15 12:26:21,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:26:21,522 INFO L225 Difference]: With dead ends: 12424 [2022-02-15 12:26:21,522 INFO L226 Difference]: Without dead ends: 12322 [2022-02-15 12:26:21,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4013 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1765, Invalid=11807, Unknown=0, NotChecked=0, Total=13572 [2022-02-15 12:26:21,524 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 884 mSDsluCounter, 3672 mSDsCounter, 0 mSdLazyCounter, 1895 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 3718 SdHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:26:21,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [884 Valid, 3718 Invalid, 2069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1895 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:26:21,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12322 states. [2022-02-15 12:26:21,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12322 to 10357. [2022-02-15 12:26:21,657 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) [2022-02-15 12:26:21,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10357 states to 10357 states and 30018 transitions. [2022-02-15 12:26:21,676 INFO L78 Accepts]: Start accepts. Automaton has 10357 states and 30018 transitions. Word has length 78 [2022-02-15 12:26:21,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:26:21,676 INFO L470 AbstractCegarLoop]: Abstraction has 10357 states and 30018 transitions. [2022-02-15 12:26:21,676 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) [2022-02-15 12:26:21,676 INFO L276 IsEmpty]: Start isEmpty. Operand 10357 states and 30018 transitions. [2022-02-15 12:26:21,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 12:26:21,689 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:26:21,689 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] [2022-02-15 12:26:21,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Ended with exit code 0 [2022-02-15 12:26:21,889 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 [2022-02-15 12:26:21,889 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:26:21,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:26:21,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1986671687, now seen corresponding path program 155 times [2022-02-15 12:26:21,890 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:26:21,890 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681010381] [2022-02-15 12:26:21,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:26:21,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:26:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:26:22,064 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:22,065 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:26:22,065 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681010381] [2022-02-15 12:26:22,065 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681010381] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:26:22,065 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183854816] [2022-02-15 12:26:22,065 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:26:22,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:26:22,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:26:22,066 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) [2022-02-15 12:26:22,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2022-02-15 12:26:22,212 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-15 12:26:22,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:26:22,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:26:22,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:26:22,535 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:26:22,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:26:22,937 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:26:22,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183854816] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:26:22,937 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:26:22,937 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-02-15 12:26:22,937 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469167879] [2022-02-15 12:26:22,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:26:22,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-15 12:26:22,938 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:26:22,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-15 12:26:22,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1191, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 12:26:22,938 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) [2022-02-15 12:26:25,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:26:25,399 INFO L93 Difference]: Finished difference Result 11180 states and 32193 transitions. [2022-02-15 12:26:25,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-02-15 12:26:25,399 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 [2022-02-15 12:26:25,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:26:25,418 INFO L225 Difference]: With dead ends: 11180 [2022-02-15 12:26:25,418 INFO L226 Difference]: Without dead ends: 11077 [2022-02-15 12:26:25,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4372 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2057, Invalid=11985, Unknown=0, NotChecked=0, Total=14042 [2022-02-15 12:26:25,419 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 769 mSDsluCounter, 3313 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 3386 SdHoareTripleChecker+Invalid, 1773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:26:25,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [769 Valid, 3386 Invalid, 1773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1616 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:26:25,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11077 states. [2022-02-15 12:26:25,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11077 to 9941. [2022-02-15 12:26:25,546 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) [2022-02-15 12:26:25,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9941 states to 9941 states and 28694 transitions. [2022-02-15 12:26:25,565 INFO L78 Accepts]: Start accepts. Automaton has 9941 states and 28694 transitions. Word has length 78 [2022-02-15 12:26:25,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:26:25,565 INFO L470 AbstractCegarLoop]: Abstraction has 9941 states and 28694 transitions. [2022-02-15 12:26:25,565 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) [2022-02-15 12:26:25,565 INFO L276 IsEmpty]: Start isEmpty. Operand 9941 states and 28694 transitions. [2022-02-15 12:26:25,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 12:26:25,581 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:26:25,581 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] [2022-02-15 12:26:25,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Forceful destruction successful, exit code 0 [2022-02-15 12:26:25,804 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 [2022-02-15 12:26:25,804 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:26:25,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:26:25,804 INFO L85 PathProgramCache]: Analyzing trace with hash -2025068431, now seen corresponding path program 156 times [2022-02-15 12:26:25,805 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:26:25,805 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355520061] [2022-02-15 12:26:25,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:26:25,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:26:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:26:25,986 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:25,987 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:26:25,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355520061] [2022-02-15 12:26:25,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355520061] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:26:25,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384478830] [2022-02-15 12:26:25,987 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:26:25,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:26:25,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:26:25,988 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) [2022-02-15 12:26:25,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2022-02-15 12:26:26,131 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-15 12:26:26,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:26:26,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-15 12:26:26,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:26:26,505 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:26,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:26:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:27,230 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384478830] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:26:27,230 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:26:27,230 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-02-15 12:26:27,230 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207430690] [2022-02-15 12:26:27,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:26:27,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-15 12:26:27,231 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:26:27,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-15 12:26:27,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1521, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 12:26:27,231 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) [2022-02-15 12:26:29,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:26:29,978 INFO L93 Difference]: Finished difference Result 12896 states and 36946 transitions. [2022-02-15 12:26:29,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-15 12:26:29,978 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 [2022-02-15 12:26:29,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:26:30,002 INFO L225 Difference]: With dead ends: 12896 [2022-02-15 12:26:30,002 INFO L226 Difference]: Without dead ends: 12810 [2022-02-15 12:26:30,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3448 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1600, Invalid=9956, Unknown=0, NotChecked=0, Total=11556 [2022-02-15 12:26:30,004 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 669 mSDsluCounter, 3747 mSDsCounter, 0 mSdLazyCounter, 2071 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 3805 SdHoareTripleChecker+Invalid, 2206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 2071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 12:26:30,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [669 Valid, 3805 Invalid, 2206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 2071 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 12:26:30,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12810 states. [2022-02-15 12:26:30,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12810 to 10041. [2022-02-15 12:26:30,189 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) [2022-02-15 12:26:30,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10041 states to 10041 states and 28969 transitions. [2022-02-15 12:26:30,209 INFO L78 Accepts]: Start accepts. Automaton has 10041 states and 28969 transitions. Word has length 78 [2022-02-15 12:26:30,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:26:30,209 INFO L470 AbstractCegarLoop]: Abstraction has 10041 states and 28969 transitions. [2022-02-15 12:26:30,209 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) [2022-02-15 12:26:30,209 INFO L276 IsEmpty]: Start isEmpty. Operand 10041 states and 28969 transitions. [2022-02-15 12:26:30,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 12:26:30,222 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:26:30,222 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] [2022-02-15 12:26:30,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Ended with exit code 0 [2022-02-15 12:26:30,422 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 [2022-02-15 12:26:30,423 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:26:30,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:26:30,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1304210485, now seen corresponding path program 157 times [2022-02-15 12:26:30,423 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:26:30,423 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283697013] [2022-02-15 12:26:30,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:26:30,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:26:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:26:30,598 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:30,598 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:26:30,598 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283697013] [2022-02-15 12:26:30,598 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283697013] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:26:30,598 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604922372] [2022-02-15 12:26:30,598 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:26:30,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:26:30,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:26:30,599 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) [2022-02-15 12:26:30,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2022-02-15 12:26:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:26:30,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-15 12:26:30,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:26:31,100 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:31,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:26:31,812 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:31,812 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604922372] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:26:31,812 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:26:31,812 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-02-15 12:26:31,812 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254241449] [2022-02-15 12:26:31,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:26:31,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-15 12:26:31,812 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:26:31,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-15 12:26:31,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1519, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 12:26:31,813 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) [2022-02-15 12:26:34,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:26:34,812 INFO L93 Difference]: Finished difference Result 13244 states and 38083 transitions. [2022-02-15 12:26:34,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-15 12:26:34,813 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 [2022-02-15 12:26:34,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:26:34,835 INFO L225 Difference]: With dead ends: 13244 [2022-02-15 12:26:34,835 INFO L226 Difference]: Without dead ends: 13158 [2022-02-15 12:26:34,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3981 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1819, Invalid=10837, Unknown=0, NotChecked=0, Total=12656 [2022-02-15 12:26:34,837 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 681 mSDsluCounter, 3774 mSDsCounter, 0 mSdLazyCounter, 2195 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 3860 SdHoareTripleChecker+Invalid, 2315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 12:26:34,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 3860 Invalid, 2315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2195 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 12:26:34,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13158 states. [2022-02-15 12:26:34,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13158 to 9961. [2022-02-15 12:26:34,978 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) [2022-02-15 12:26:35,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9961 states to 9961 states and 28749 transitions. [2022-02-15 12:26:35,077 INFO L78 Accepts]: Start accepts. Automaton has 9961 states and 28749 transitions. Word has length 78 [2022-02-15 12:26:35,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:26:35,077 INFO L470 AbstractCegarLoop]: Abstraction has 9961 states and 28749 transitions. [2022-02-15 12:26:35,077 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) [2022-02-15 12:26:35,077 INFO L276 IsEmpty]: Start isEmpty. Operand 9961 states and 28749 transitions. [2022-02-15 12:26:35,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 12:26:35,088 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:26:35,088 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] [2022-02-15 12:26:35,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Ended with exit code 0 [2022-02-15 12:26:35,288 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 [2022-02-15 12:26:35,288 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:26:35,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:26:35,289 INFO L85 PathProgramCache]: Analyzing trace with hash 460003775, now seen corresponding path program 158 times [2022-02-15 12:26:35,289 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:26:35,289 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123314090] [2022-02-15 12:26:35,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:26:35,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:26:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:26:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:35,475 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:26:35,475 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123314090] [2022-02-15 12:26:35,475 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123314090] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:26:35,475 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576637507] [2022-02-15 12:26:35,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:26:35,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:26:35,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:26:35,476 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) [2022-02-15 12:26:35,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2022-02-15 12:26:35,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:26:35,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:26:35,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-15 12:26:35,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:26:35,999 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:36,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:26:36,731 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:36,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576637507] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:26:36,731 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:26:36,731 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-02-15 12:26:36,731 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553653367] [2022-02-15 12:26:36,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:26:36,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-15 12:26:36,732 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:26:36,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-15 12:26:36,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1534, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 12:26:36,732 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) [2022-02-15 12:26:38,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:26:38,778 INFO L93 Difference]: Finished difference Result 11948 states and 34086 transitions. [2022-02-15 12:26:38,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-15 12:26:38,779 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 [2022-02-15 12:26:38,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:26:38,798 INFO L225 Difference]: With dead ends: 11948 [2022-02-15 12:26:38,799 INFO L226 Difference]: Without dead ends: 11862 [2022-02-15 12:26:38,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2365 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1115, Invalid=7257, Unknown=0, NotChecked=0, Total=8372 [2022-02-15 12:26:38,800 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 510 mSDsluCounter, 3455 mSDsCounter, 0 mSdLazyCounter, 1710 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 3516 SdHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:26:38,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 3516 Invalid, 1793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1710 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:26:38,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11862 states. [2022-02-15 12:26:38,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11862 to 10057. [2022-02-15 12:26:38,930 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) [2022-02-15 12:26:38,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10057 states to 10057 states and 29021 transitions. [2022-02-15 12:26:38,949 INFO L78 Accepts]: Start accepts. Automaton has 10057 states and 29021 transitions. Word has length 78 [2022-02-15 12:26:38,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:26:38,949 INFO L470 AbstractCegarLoop]: Abstraction has 10057 states and 29021 transitions. [2022-02-15 12:26:38,949 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) [2022-02-15 12:26:38,949 INFO L276 IsEmpty]: Start isEmpty. Operand 10057 states and 29021 transitions. [2022-02-15 12:26:38,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 12:26:38,961 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:26:38,961 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] [2022-02-15 12:26:38,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Forceful destruction successful, exit code 0 [2022-02-15 12:26:39,163 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 [2022-02-15 12:26:39,163 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:26:39,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:26:39,164 INFO L85 PathProgramCache]: Analyzing trace with hash -638244689, now seen corresponding path program 159 times [2022-02-15 12:26:39,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:26:39,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143277856] [2022-02-15 12:26:39,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:26:39,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:26:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:26:39,392 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:39,392 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:26:39,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143277856] [2022-02-15 12:26:39,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143277856] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:26:39,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695977026] [2022-02-15 12:26:39,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:26:39,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:26:39,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:26:39,393 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) [2022-02-15 12:26:39,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2022-02-15 12:26:39,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-15 12:26:39,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:26:39,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:26:39,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:26:39,883 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:26:39,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:26:40,276 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:26:40,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695977026] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:26:40,276 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:26:40,276 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-02-15 12:26:40,276 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633652944] [2022-02-15 12:26:40,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:26:40,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-15 12:26:40,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:26:40,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-15 12:26:40,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1185, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 12:26:40,277 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) [2022-02-15 12:26:42,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:26:42,852 INFO L93 Difference]: Finished difference Result 10939 states and 31356 transitions. [2022-02-15 12:26:42,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-15 12:26:42,852 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 [2022-02-15 12:26:42,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:26:42,871 INFO L225 Difference]: With dead ends: 10939 [2022-02-15 12:26:42,871 INFO L226 Difference]: Without dead ends: 10853 [2022-02-15 12:26:42,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4774 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2099, Invalid=13153, Unknown=0, NotChecked=0, Total=15252 [2022-02-15 12:26:42,873 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 563 mSDsluCounter, 3892 mSDsCounter, 0 mSdLazyCounter, 2045 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 3991 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 [2022-02-15 12:26:42,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 3991 Invalid, 2156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2045 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:26:42,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10853 states. [2022-02-15 12:26:42,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10853 to 9813. [2022-02-15 12:26:43,008 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) [2022-02-15 12:26:43,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9813 states to 9813 states and 28270 transitions. [2022-02-15 12:26:43,028 INFO L78 Accepts]: Start accepts. Automaton has 9813 states and 28270 transitions. Word has length 78 [2022-02-15 12:26:43,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:26:43,028 INFO L470 AbstractCegarLoop]: Abstraction has 9813 states and 28270 transitions. [2022-02-15 12:26:43,028 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) [2022-02-15 12:26:43,028 INFO L276 IsEmpty]: Start isEmpty. Operand 9813 states and 28270 transitions. [2022-02-15 12:26:43,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 12:26:43,042 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:26:43,042 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] [2022-02-15 12:26:43,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Ended with exit code 0 [2022-02-15 12:26:43,243 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 [2022-02-15 12:26:43,243 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:26:43,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:26:43,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1603933069, now seen corresponding path program 160 times [2022-02-15 12:26:43,243 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:26:43,243 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575537873] [2022-02-15 12:26:43,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:26:43,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:26:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:26:43,421 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:43,421 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:26:43,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575537873] [2022-02-15 12:26:43,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575537873] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:26:43,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921244118] [2022-02-15 12:26:43,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:26:43,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:26:43,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:26:43,422 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) [2022-02-15 12:26:43,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2022-02-15 12:26:43,566 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:26:43,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:26:43,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-15 12:26:43,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:26:43,999 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:43,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:26:44,595 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:44,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921244118] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:26:44,595 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:26:44,595 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2022-02-15 12:26:44,595 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929319275] [2022-02-15 12:26:44,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:26:44,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-15 12:26:44,595 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:26:44,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-15 12:26:44,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1810, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 12:26:44,596 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) [2022-02-15 12:26:48,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:26:48,302 INFO L93 Difference]: Finished difference Result 12362 states and 35437 transitions. [2022-02-15 12:26:48,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-02-15 12:26:48,302 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 [2022-02-15 12:26:48,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:26:48,323 INFO L225 Difference]: With dead ends: 12362 [2022-02-15 12:26:48,324 INFO L226 Difference]: Without dead ends: 12276 [2022-02-15 12:26:48,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7188 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2692, Invalid=19360, Unknown=0, NotChecked=0, Total=22052 [2022-02-15 12:26:48,325 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 1209 mSDsluCounter, 3693 mSDsCounter, 0 mSdLazyCounter, 1879 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 3747 SdHoareTripleChecker+Invalid, 2115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:26:48,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1209 Valid, 3747 Invalid, 2115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1879 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:26:48,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12276 states. [2022-02-15 12:26:48,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12276 to 10205. [2022-02-15 12:26:48,476 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) [2022-02-15 12:26:48,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10205 states to 10205 states and 29396 transitions. [2022-02-15 12:26:48,497 INFO L78 Accepts]: Start accepts. Automaton has 10205 states and 29396 transitions. Word has length 78 [2022-02-15 12:26:48,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:26:48,497 INFO L470 AbstractCegarLoop]: Abstraction has 10205 states and 29396 transitions. [2022-02-15 12:26:48,498 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) [2022-02-15 12:26:48,498 INFO L276 IsEmpty]: Start isEmpty. Operand 10205 states and 29396 transitions. [2022-02-15 12:26:48,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 12:26:48,512 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:26:48,512 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] [2022-02-15 12:26:48,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Ended with exit code 0 [2022-02-15 12:26:48,712 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 [2022-02-15 12:26:48,712 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:26:48,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:26:48,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1563789765, now seen corresponding path program 161 times [2022-02-15 12:26:48,713 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:26:48,713 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784500020] [2022-02-15 12:26:48,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:26:48,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:26:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:26:48,898 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:48,899 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:26:48,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784500020] [2022-02-15 12:26:48,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784500020] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:26:48,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548870133] [2022-02-15 12:26:48,899 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:26:48,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:26:48,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:26:48,900 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) [2022-02-15 12:26:48,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Waiting until timeout for monitored process [2022-02-15 12:26:49,043 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-15 12:26:49,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:26:49,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:26:49,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:26:49,378 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:26:49,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:26:49,797 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:26:49,797 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548870133] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:26:49,797 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:26:49,798 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-02-15 12:26:49,798 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124580795] [2022-02-15 12:26:49,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:26:49,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-15 12:26:49,798 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:26:49,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-15 12:26:49,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1199, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 12:26:49,798 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) [2022-02-15 12:26:51,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:26:51,920 INFO L93 Difference]: Finished difference Result 11576 states and 33122 transitions. [2022-02-15 12:26:51,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-15 12:26:51,921 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 [2022-02-15 12:26:51,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:26:51,941 INFO L225 Difference]: With dead ends: 11576 [2022-02-15 12:26:51,941 INFO L226 Difference]: Without dead ends: 11469 [2022-02-15 12:26:51,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3105 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1345, Invalid=9367, Unknown=0, NotChecked=0, Total=10712 [2022-02-15 12:26:51,943 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 426 mSDsluCounter, 3907 mSDsCounter, 0 mSdLazyCounter, 1700 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 3991 SdHoareTripleChecker+Invalid, 1779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:26:51,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 3991 Invalid, 1779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1700 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:26:51,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11469 states. [2022-02-15 12:26:52,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11469 to 10457. [2022-02-15 12:26:52,136 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) [2022-02-15 12:26:52,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10457 states to 10457 states and 29921 transitions. [2022-02-15 12:26:52,158 INFO L78 Accepts]: Start accepts. Automaton has 10457 states and 29921 transitions. Word has length 78 [2022-02-15 12:26:52,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:26:52,158 INFO L470 AbstractCegarLoop]: Abstraction has 10457 states and 29921 transitions. [2022-02-15 12:26:52,158 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) [2022-02-15 12:26:52,158 INFO L276 IsEmpty]: Start isEmpty. Operand 10457 states and 29921 transitions. [2022-02-15 12:26:52,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 12:26:52,172 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:26:52,172 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] [2022-02-15 12:26:52,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Forceful destruction successful, exit code 0 [2022-02-15 12:26:52,373 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 [2022-02-15 12:26:52,373 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:26:52,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:26:52,373 INFO L85 PathProgramCache]: Analyzing trace with hash 948913081, now seen corresponding path program 162 times [2022-02-15 12:26:52,374 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:26:52,374 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041590778] [2022-02-15 12:26:52,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:26:52,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:26:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:26:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:52,546 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:26:52,546 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041590778] [2022-02-15 12:26:52,546 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041590778] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:26:52,546 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083972352] [2022-02-15 12:26:52,546 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:26:52,547 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:26:52,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:26:52,548 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) [2022-02-15 12:26:52,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2022-02-15 12:26:52,692 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-15 12:26:52,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:26:52,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-15 12:26:52,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:26:53,048 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:53,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:26:53,794 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:53,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083972352] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:26:53,794 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:26:53,794 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-02-15 12:26:53,794 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375404452] [2022-02-15 12:26:53,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:26:53,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-15 12:26:53,794 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:26:53,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-15 12:26:53,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1554, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 12:26:53,795 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) [2022-02-15 12:26:55,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:26:55,808 INFO L93 Difference]: Finished difference Result 12144 states and 34460 transitions. [2022-02-15 12:26:55,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-15 12:26:55,808 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 [2022-02-15 12:26:55,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:26:55,829 INFO L225 Difference]: With dead ends: 12144 [2022-02-15 12:26:55,829 INFO L226 Difference]: Without dead ends: 12078 [2022-02-15 12:26:55,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2398 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=995, Invalid=7377, Unknown=0, NotChecked=0, Total=8372 [2022-02-15 12:26:55,830 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 442 mSDsluCounter, 4113 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 4130 SdHoareTripleChecker+Invalid, 1998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:26:55,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 4130 Invalid, 1998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1912 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:26:55,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12078 states. [2022-02-15 12:26:55,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12078 to 10461. [2022-02-15 12:26:55,984 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) [2022-02-15 12:26:56,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10461 states to 10461 states and 29932 transitions. [2022-02-15 12:26:56,005 INFO L78 Accepts]: Start accepts. Automaton has 10461 states and 29932 transitions. Word has length 78 [2022-02-15 12:26:56,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:26:56,006 INFO L470 AbstractCegarLoop]: Abstraction has 10461 states and 29932 transitions. [2022-02-15 12:26:56,006 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) [2022-02-15 12:26:56,006 INFO L276 IsEmpty]: Start isEmpty. Operand 10461 states and 29932 transitions. [2022-02-15 12:26:56,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 12:26:56,019 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:26:56,019 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] [2022-02-15 12:26:56,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Ended with exit code 0 [2022-02-15 12:26:56,219 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 [2022-02-15 12:26:56,220 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:26:56,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:26:56,220 INFO L85 PathProgramCache]: Analyzing trace with hash -206351307, now seen corresponding path program 163 times [2022-02-15 12:26:56,220 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:26:56,220 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016533021] [2022-02-15 12:26:56,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:26:56,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:26:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:26:56,398 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:56,398 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:26:56,398 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016533021] [2022-02-15 12:26:56,398 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016533021] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:26:56,398 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645163771] [2022-02-15 12:26:56,398 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:26:56,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:26:56,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:26:56,399 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) [2022-02-15 12:26:56,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Waiting until timeout for monitored process [2022-02-15 12:26:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:26:56,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-15 12:26:56,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:26:56,914 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:56,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:26:57,682 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:26:57,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645163771] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:26:57,682 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:26:57,682 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-02-15 12:26:57,682 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139586978] [2022-02-15 12:26:57,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:26:57,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-15 12:26:57,683 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:26:57,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-15 12:26:57,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1535, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 12:26:57,683 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) [2022-02-15 12:27:00,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:27:00,501 INFO L93 Difference]: Finished difference Result 13518 states and 38297 transitions. [2022-02-15 12:27:00,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-15 12:27:00,501 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 [2022-02-15 12:27:00,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:27:00,525 INFO L225 Difference]: With dead ends: 13518 [2022-02-15 12:27:00,525 INFO L226 Difference]: Without dead ends: 13440 [2022-02-15 12:27:00,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3711 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1553, Invalid=10657, Unknown=0, NotChecked=0, Total=12210 [2022-02-15 12:27:00,526 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 586 mSDsluCounter, 3879 mSDsCounter, 0 mSdLazyCounter, 2111 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 3910 SdHoareTripleChecker+Invalid, 2217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 12:27:00,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 3910 Invalid, 2217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2111 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 12:27:00,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13440 states. [2022-02-15 12:27:00,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13440 to 10609. [2022-02-15 12:27:00,704 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) [2022-02-15 12:27:00,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10609 states to 10609 states and 30351 transitions. [2022-02-15 12:27:00,724 INFO L78 Accepts]: Start accepts. Automaton has 10609 states and 30351 transitions. Word has length 78 [2022-02-15 12:27:00,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:27:00,724 INFO L470 AbstractCegarLoop]: Abstraction has 10609 states and 30351 transitions. [2022-02-15 12:27:00,724 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) [2022-02-15 12:27:00,724 INFO L276 IsEmpty]: Start isEmpty. Operand 10609 states and 30351 transitions. [2022-02-15 12:27:00,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 12:27:00,738 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:27:00,738 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] [2022-02-15 12:27:00,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Forceful destruction successful, exit code 0 [2022-02-15 12:27:00,938 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 [2022-02-15 12:27:00,938 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:27:00,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:27:00,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1628909515, now seen corresponding path program 164 times [2022-02-15 12:27:00,939 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:27:00,939 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100809284] [2022-02-15 12:27:00,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:27:00,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:27:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:27:01,113 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:27:01,113 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:27:01,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100809284] [2022-02-15 12:27:01,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100809284] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:27:01,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014892863] [2022-02-15 12:27:01,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:27:01,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:27:01,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:27:01,114 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) [2022-02-15 12:27:01,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Waiting until timeout for monitored process [2022-02-15 12:27:01,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:27:01,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:27:01,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-15 12:27:01,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:27:01,620 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:27:01,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:27:02,381 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:27:02,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014892863] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:27:02,382 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:27:02,382 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-02-15 12:27:02,382 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217362422] [2022-02-15 12:27:02,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:27:02,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-15 12:27:02,382 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:27:02,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-15 12:27:02,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1562, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 12:27:02,383 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) [2022-02-15 12:27:05,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:27:05,359 INFO L93 Difference]: Finished difference Result 12814 states and 36301 transitions. [2022-02-15 12:27:05,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-15 12:27:05,359 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 [2022-02-15 12:27:05,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:27:05,386 INFO L225 Difference]: With dead ends: 12814 [2022-02-15 12:27:05,386 INFO L226 Difference]: Without dead ends: 12748 [2022-02-15 12:27:05,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4148 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1593, Invalid=12213, Unknown=0, NotChecked=0, Total=13806 [2022-02-15 12:27:05,388 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 550 mSDsluCounter, 5382 mSDsCounter, 0 mSdLazyCounter, 2748 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 5360 SdHoareTripleChecker+Invalid, 2850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 12:27:05,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 5360 Invalid, 2850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2748 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 12:27:05,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12748 states. [2022-02-15 12:27:05,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12748 to 10709. [2022-02-15 12:27:05,547 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) [2022-02-15 12:27:05,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10709 states to 10709 states and 30626 transitions. [2022-02-15 12:27:05,568 INFO L78 Accepts]: Start accepts. Automaton has 10709 states and 30626 transitions. Word has length 78 [2022-02-15 12:27:05,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:27:05,569 INFO L470 AbstractCegarLoop]: Abstraction has 10709 states and 30626 transitions. [2022-02-15 12:27:05,569 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) [2022-02-15 12:27:05,569 INFO L276 IsEmpty]: Start isEmpty. Operand 10709 states and 30626 transitions. [2022-02-15 12:27:05,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 12:27:05,582 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:27:05,583 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] [2022-02-15 12:27:05,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Forceful destruction successful, exit code 0 [2022-02-15 12:27:05,783 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 [2022-02-15 12:27:05,783 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:27:05,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:27:05,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1510793393, now seen corresponding path program 165 times [2022-02-15 12:27:05,783 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:27:05,783 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420971132] [2022-02-15 12:27:05,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:27:05,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:27:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:27:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:27:05,962 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:27:05,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420971132] [2022-02-15 12:27:05,962 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420971132] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:27:05,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150028969] [2022-02-15 12:27:05,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:27:05,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:27:05,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:27:05,963 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) [2022-02-15 12:27:05,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Waiting until timeout for monitored process [2022-02-15 12:27:06,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-15 12:27:06,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:27:06,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:27:06,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:27:06,441 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:27:06,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:27:06,837 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:27:06,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150028969] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:27:06,837 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:27:06,837 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-02-15 12:27:06,837 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620866726] [2022-02-15 12:27:06,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:27:06,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-15 12:27:06,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:27:06,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-15 12:27:06,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1183, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 12:27:06,838 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) [2022-02-15 12:27:09,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:27:09,619 INFO L93 Difference]: Finished difference Result 14463 states and 41355 transitions. [2022-02-15 12:27:09,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-02-15 12:27:09,619 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 [2022-02-15 12:27:09,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:27:09,644 INFO L225 Difference]: With dead ends: 14463 [2022-02-15 12:27:09,644 INFO L226 Difference]: Without dead ends: 14385 [2022-02-15 12:27:09,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4950 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1977, Invalid=13773, Unknown=0, NotChecked=0, Total=15750 [2022-02-15 12:27:09,645 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 633 mSDsluCounter, 3740 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 3848 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:27:09,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 3848 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1799 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:27:09,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14385 states. [2022-02-15 12:27:09,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14385 to 11217. [2022-02-15 12:27:09,816 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) [2022-02-15 12:27:09,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11217 states to 11217 states and 32179 transitions. [2022-02-15 12:27:09,837 INFO L78 Accepts]: Start accepts. Automaton has 11217 states and 32179 transitions. Word has length 78 [2022-02-15 12:27:09,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:27:09,837 INFO L470 AbstractCegarLoop]: Abstraction has 11217 states and 32179 transitions. [2022-02-15 12:27:09,837 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) [2022-02-15 12:27:09,837 INFO L276 IsEmpty]: Start isEmpty. Operand 11217 states and 32179 transitions. [2022-02-15 12:27:09,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 12:27:09,851 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:27:09,852 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] [2022-02-15 12:27:09,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Forceful destruction successful, exit code 0 [2022-02-15 12:27:10,052 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 [2022-02-15 12:27:10,052 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:27:10,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:27:10,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1726214867, now seen corresponding path program 166 times [2022-02-15 12:27:10,052 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:27:10,053 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900788813] [2022-02-15 12:27:10,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:27:10,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:27:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:27:10,227 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:27:10,227 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:27:10,227 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900788813] [2022-02-15 12:27:10,227 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900788813] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:27:10,227 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119731314] [2022-02-15 12:27:10,227 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:27:10,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:27:10,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:27:10,229 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) [2022-02-15 12:27:10,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Waiting until timeout for monitored process [2022-02-15 12:27:10,373 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:27:10,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:27:10,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-15 12:27:10,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:27:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:27:10,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:27:11,358 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:27:11,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119731314] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:27:11,359 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:27:11,359 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 40 [2022-02-15 12:27:11,359 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496787941] [2022-02-15 12:27:11,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:27:11,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-15 12:27:11,359 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:27:11,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-15 12:27:11,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 12:27:11,360 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) [2022-02-15 12:27:16,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:27:16,112 INFO L93 Difference]: Finished difference Result 15620 states and 44125 transitions. [2022-02-15 12:27:16,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-02-15 12:27:16,112 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 [2022-02-15 12:27:16,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:27:16,139 INFO L225 Difference]: With dead ends: 15620 [2022-02-15 12:27:16,139 INFO L226 Difference]: Without dead ends: 15395 [2022-02-15 12:27:16,141 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 [2022-02-15 12:27:16,141 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 955 mSDsluCounter, 5180 mSDsCounter, 0 mSdLazyCounter, 2933 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 5144 SdHoareTripleChecker+Invalid, 3136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 2933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:27:16,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [955 Valid, 5144 Invalid, 3136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 2933 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 12:27:16,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15395 states. [2022-02-15 12:27:16,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15395 to 11897. [2022-02-15 12:27:16,327 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) [2022-02-15 12:27:16,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11897 states to 11897 states and 34069 transitions. [2022-02-15 12:27:16,352 INFO L78 Accepts]: Start accepts. Automaton has 11897 states and 34069 transitions. Word has length 78 [2022-02-15 12:27:16,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:27:16,352 INFO L470 AbstractCegarLoop]: Abstraction has 11897 states and 34069 transitions. [2022-02-15 12:27:16,352 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) [2022-02-15 12:27:16,352 INFO L276 IsEmpty]: Start isEmpty. Operand 11897 states and 34069 transitions. [2022-02-15 12:27:16,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 12:27:16,368 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:27:16,368 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] [2022-02-15 12:27:16,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Ended with exit code 0 [2022-02-15 12:27:16,568 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 [2022-02-15 12:27:16,569 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:27:16,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:27:16,569 INFO L85 PathProgramCache]: Analyzing trace with hash 143966545, now seen corresponding path program 167 times [2022-02-15 12:27:16,569 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:27:16,569 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485542703] [2022-02-15 12:27:16,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:27:16,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:27:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:27:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:27:16,744 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:27:16,744 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485542703] [2022-02-15 12:27:16,744 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485542703] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:27:16,744 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625488355] [2022-02-15 12:27:16,744 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:27:16,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:27:16,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:27:16,745 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) [2022-02-15 12:27:16,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Waiting until timeout for monitored process [2022-02-15 12:27:16,892 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-15 12:27:16,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:27:16,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-15 12:27:16,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:27:17,253 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:27:17,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:27:17,987 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:27:17,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625488355] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:27:17,987 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:27:17,987 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-02-15 12:27:17,987 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839515550] [2022-02-15 12:27:17,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:27:17,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-15 12:27:17,987 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:27:17,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-15 12:27:17,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 12:27:17,988 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) [2022-02-15 12:27:20,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:27:20,927 INFO L93 Difference]: Finished difference Result 13940 states and 39519 transitions. [2022-02-15 12:27:20,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-15 12:27:20,927 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 [2022-02-15 12:27:20,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:27:20,952 INFO L225 Difference]: With dead ends: 13940 [2022-02-15 12:27:20,952 INFO L226 Difference]: Without dead ends: 13859 [2022-02-15 12:27:20,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4911 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1745, Invalid=13507, Unknown=0, NotChecked=0, Total=15252 [2022-02-15 12:27:20,953 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 796 mSDsluCounter, 4013 mSDsCounter, 0 mSdLazyCounter, 1983 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 4044 SdHoareTripleChecker+Invalid, 2121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:27:20,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [796 Valid, 4044 Invalid, 2121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1983 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:27:20,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13859 states. [2022-02-15 12:27:21,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13859 to 12025. [2022-02-15 12:27:21,119 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) [2022-02-15 12:27:21,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12025 states to 12025 states and 34461 transitions. [2022-02-15 12:27:21,145 INFO L78 Accepts]: Start accepts. Automaton has 12025 states and 34461 transitions. Word has length 78 [2022-02-15 12:27:21,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:27:21,145 INFO L470 AbstractCegarLoop]: Abstraction has 12025 states and 34461 transitions. [2022-02-15 12:27:21,146 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) [2022-02-15 12:27:21,146 INFO L276 IsEmpty]: Start isEmpty. Operand 12025 states and 34461 transitions. [2022-02-15 12:27:21,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 12:27:21,163 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:27:21,163 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] [2022-02-15 12:27:21,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Forceful destruction successful, exit code 0 [2022-02-15 12:27:21,363 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 [2022-02-15 12:27:21,364 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:27:21,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:27:21,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1172360911, now seen corresponding path program 168 times [2022-02-15 12:27:21,364 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:27:21,364 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516367881] [2022-02-15 12:27:21,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:27:21,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:27:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:27:21,542 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:27:21,543 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:27:21,543 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516367881] [2022-02-15 12:27:21,543 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516367881] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:27:21,543 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428835473] [2022-02-15 12:27:21,543 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:27:21,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:27:21,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:27:21,544 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) [2022-02-15 12:27:21,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Waiting until timeout for monitored process [2022-02-15 12:27:21,692 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-15 12:27:21,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:27:21,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-15 12:27:21,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:27:22,020 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:27:22,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:27:22,412 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:27:22,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428835473] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:27:22,412 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:27:22,412 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-02-15 12:27:22,412 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798861605] [2022-02-15 12:27:22,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:27:22,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-15 12:27:22,413 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:27:22,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-15 12:27:22,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 12:27:22,413 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) [2022-02-15 12:27:25,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:27:25,781 INFO L93 Difference]: Finished difference Result 16073 states and 45915 transitions. [2022-02-15 12:27:25,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-02-15 12:27:25,781 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 [2022-02-15 12:27:25,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:27:25,810 INFO L225 Difference]: With dead ends: 16073 [2022-02-15 12:27:25,810 INFO L226 Difference]: Without dead ends: 15949 [2022-02-15 12:27:25,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8543 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3534, Invalid=21588, Unknown=0, NotChecked=0, Total=25122 [2022-02-15 12:27:25,813 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 950 mSDsluCounter, 3725 mSDsCounter, 0 mSdLazyCounter, 1856 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 3815 SdHoareTripleChecker+Invalid, 2076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:27:25,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [950 Valid, 3815 Invalid, 2076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1856 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:27:25,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15949 states. [2022-02-15 12:27:25,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15949 to 5553. [2022-02-15 12:27:25,999 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) [2022-02-15 12:27:26,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5553 states to 5553 states and 15771 transitions. [2022-02-15 12:27:26,008 INFO L78 Accepts]: Start accepts. Automaton has 5553 states and 15771 transitions. Word has length 78 [2022-02-15 12:27:26,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:27:26,009 INFO L470 AbstractCegarLoop]: Abstraction has 5553 states and 15771 transitions. [2022-02-15 12:27:26,009 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) [2022-02-15 12:27:26,009 INFO L276 IsEmpty]: Start isEmpty. Operand 5553 states and 15771 transitions. [2022-02-15 12:27:26,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 12:27:26,016 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:27:26,016 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] [2022-02-15 12:27:26,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Forceful destruction successful, exit code 0 [2022-02-15 12:27:26,217 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 [2022-02-15 12:27:26,217 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:27:26,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:27:26,218 INFO L85 PathProgramCache]: Analyzing trace with hash 315095993, now seen corresponding path program 169 times [2022-02-15 12:27:26,218 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:27:26,218 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458279702] [2022-02-15 12:27:26,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:27:26,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:27:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:27:26,387 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:27:26,387 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:27:26,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458279702] [2022-02-15 12:27:26,387 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458279702] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:27:26,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424868774] [2022-02-15 12:27:26,387 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:27:26,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:27:26,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:27:26,389 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) [2022-02-15 12:27:26,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Waiting until timeout for monitored process [2022-02-15 12:27:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:27:26,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-15 12:27:26,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:27:26,874 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:27:26,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:27:27,650 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:27:27,650 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424868774] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:27:27,650 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:27:27,650 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2022-02-15 12:27:27,650 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165589616] [2022-02-15 12:27:27,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:27:27,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-15 12:27:27,651 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:27:27,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-15 12:27:27,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1489, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 12:27:27,652 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) Received shutdown request... [2022-02-15 12:27:28,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 12:27:28,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 131 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1182 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=619, Invalid=3937, Unknown=0, NotChecked=0, Total=4556 [2022-02-15 12:27:28,764 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 150 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 2008 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 12:27:28,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 2008 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 12:27:28,765 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-02-15 12:27:28,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Forceful destruction successful, exit code 0 [2022-02-15 12:27:28,792 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-15 12:27:28,798 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 [2022-02-15 12:27:28,965 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 [2022-02-15 12:27:28,966 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (5553states) and FLOYD_HOARE automaton (currently 32 states, 41 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 68 known predicates. [2022-02-15 12:27:28,967 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-15 12:27:28,968 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-15 12:27:28,970 INFO L732 BasicCegarLoop]: Path program histogram: [169, 20, 6, 6, 1] [2022-02-15 12:27:28,971 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-15 12:27:28,971 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 12:27:28,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 12:27:28 BasicIcfg [2022-02-15 12:27:28,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 12:27:28,972 INFO L158 Benchmark]: Toolchain (without parser) took 704276.20ms. Allocated memory was 177.2MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 118.9MB in the beginning and 710.2MB in the end (delta: -591.3MB). Peak memory consumption was 613.5MB. Max. memory is 8.0GB. [2022-02-15 12:27:28,972 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 177.2MB. Free memory is still 135.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 12:27:28,972 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.65ms. Allocated memory was 177.2MB in the beginning and 221.2MB in the end (delta: 44.0MB). Free memory was 118.6MB in the beginning and 192.3MB in the end (delta: -73.6MB). Peak memory consumption was 12.7MB. Max. memory is 8.0GB. [2022-02-15 12:27:28,972 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.94ms. Allocated memory is still 221.2MB. Free memory was 192.3MB in the beginning and 190.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-15 12:27:28,972 INFO L158 Benchmark]: Boogie Preprocessor took 15.73ms. Allocated memory is still 221.2MB. Free memory was 190.7MB in the beginning and 189.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-15 12:27:28,972 INFO L158 Benchmark]: RCFGBuilder took 362.09ms. Allocated memory is still 221.2MB. Free memory was 189.6MB in the beginning and 177.6MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-15 12:27:28,972 INFO L158 Benchmark]: TraceAbstraction took 703650.22ms. Allocated memory was 221.2MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 177.1MB in the beginning and 710.2MB in the end (delta: -533.2MB). Peak memory consumption was 627.6MB. Max. memory is 8.0GB. [2022-02-15 12:27:28,973 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 177.2MB. Free memory is still 135.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 205.65ms. Allocated memory was 177.2MB in the beginning and 221.2MB in the end (delta: 44.0MB). Free memory was 118.6MB in the beginning and 192.3MB in the end (delta: -73.6MB). Peak memory consumption was 12.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.94ms. Allocated memory is still 221.2MB. Free memory was 192.3MB in the beginning and 190.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.73ms. Allocated memory is still 221.2MB. Free memory was 190.7MB in the beginning and 189.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 362.09ms. Allocated memory is still 221.2MB. Free memory was 189.6MB in the beginning and 177.6MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 703650.22ms. Allocated memory was 221.2MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 177.1MB in the beginning and 710.2MB in the end (delta: -533.2MB). Peak memory consumption was 627.6MB. 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 constructing difference of abstraction (5553states) and FLOYD_HOARE automaton (currently 32 states, 41 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 68 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 constructing difference of abstraction (5553states) and FLOYD_HOARE automaton (currently 32 states, 41 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 68 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 constructing difference of abstraction (5553states) and FLOYD_HOARE automaton (currently 32 states, 41 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 68 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: 703.5s, OverallIterations: 202, TraceHistogramMax: 2, PathProgramHistogramMax: 169, EmptinessCheckTime: 2.1s, AutomataDifference: 460.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 105923 SdHoareTripleChecker+Valid, 91.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 105923 mSDsluCounter, 475966 SdHoareTripleChecker+Invalid, 76.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 466626 mSDsCounter, 15804 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 231729 IncrementalHoareTripleChecker+Invalid, 247533 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15804 mSolverCounterUnsat, 29336 mSDtfsCounter, 231729 mSolverCounterSat, 1.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 38503 GetRequests, 20431 SyntacticMatches, 650 SemanticMatches, 17421 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692045 ImplicationChecksByTransitivity, 410.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14625occurred in iteration=158, InterpolantAutomatonStates: 14248, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 26.2s AutomataMinimizationTime, 201 MinimizatonAttempts, 538880 StatesRemovedByMinimization, 200 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.2s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 160.4s InterpolantComputationTime, 26122 NumberOfCodeBlocks, 26107 NumberOfCodeBlocksAsserted, 563 NumberOfCheckSat, 37389 ConstructedInterpolants, 0 QuantifiedInterpolants, 220627 SizeOfPredicates, 1702 NumberOfNonLiveVariables, 26616 ConjunctsInSsa, 3350 ConjunctsInUnsatCore, 537 InterpolantComputations, 36 PerfectInterpolantSequences, 226/1710 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