/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 17:51:18,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 17:51:18,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 17:51:18,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-03 17:51:18,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-03 17:51:18,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-03 17:51:18,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-03 17:51:18,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-03 17:51:18,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-03 17:51:18,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-03 17:51:18,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-03 17:51:18,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-03 17:51:18,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-03 17:51:18,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-03 17:51:18,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-03 17:51:18,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-03 17:51:18,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-03 17:51:18,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-03 17:51:18,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-03 17:51:18,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-03 17:51:18,904 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-03 17:51:18,924 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 17:51:18,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 17:51:18,924 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 17:51:18,924 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 17:51:18,925 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 17:51:18,925 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 17:51:18,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 17:51:18,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 17:51:18,925 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 17:51:18,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 17:51:18,926 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 17:51:18,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 17:51:18,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 17:51:18,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 17:51:18,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 17:51:18,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 17:51:18,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 17:51:18,926 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 17:51:18,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 17:51:18,926 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 17:51:18,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 17:51:18,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 17:51:18,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 17:51:18,927 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 17:51:18,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 17:51:18,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:51:18,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 17:51:18,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 17:51:18,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 17:51:18,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 17:51:18,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 17:51:18,927 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 17:51:18,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 17:51:18,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 17:51:19,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 17:51:19,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 17:51:19,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 17:51:19,140 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-03 17:51:19,141 INFO L275 PluginConnector]: CDTParser initialized [2022-03-03 17:51:19,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c [2022-03-03 17:51:19,202 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e1a82ea4/0f060262547e4509b81e91153b251f23/FLAG1ed95bcf0 [2022-03-03 17:51:19,552 INFO L306 CDTParser]: Found 1 translation units. [2022-03-03 17:51:19,553 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c [2022-03-03 17:51:19,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e1a82ea4/0f060262547e4509b81e91153b251f23/FLAG1ed95bcf0 [2022-03-03 17:51:19,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e1a82ea4/0f060262547e4509b81e91153b251f23 [2022-03-03 17:51:19,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 17:51:19,574 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-03 17:51:19,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-03 17:51:19,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-03 17:51:19,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-03 17:51:19,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:51:19" (1/1) ... [2022-03-03 17:51:19,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@212f3af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:19, skipping insertion in model container [2022-03-03 17:51:19,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:51:19" (1/1) ... [2022-03-03 17:51:19,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-03 17:51:19,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-03 17:51:19,747 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c[2005,2018] [2022-03-03 17:51:19,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:51:19,753 INFO L203 MainTranslator]: Completed pre-run [2022-03-03 17:51:19,768 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c[2005,2018] [2022-03-03 17:51:19,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:51:19,778 INFO L208 MainTranslator]: Completed translation [2022-03-03 17:51:19,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:19 WrapperNode [2022-03-03 17:51:19,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-03 17:51:19,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 17:51:19,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 17:51:19,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 17:51:19,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:19" (1/1) ... [2022-03-03 17:51:19,790 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:19" (1/1) ... [2022-03-03 17:51:19,802 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-03-03 17:51:19,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 17:51:19,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 17:51:19,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 17:51:19,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 17:51:19,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:19" (1/1) ... [2022-03-03 17:51:19,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:19" (1/1) ... [2022-03-03 17:51:19,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:19" (1/1) ... [2022-03-03 17:51:19,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:19" (1/1) ... [2022-03-03 17:51:19,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:19" (1/1) ... [2022-03-03 17:51:19,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:19" (1/1) ... [2022-03-03 17:51:19,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:19" (1/1) ... [2022-03-03 17:51:19,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 17:51:19,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 17:51:19,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 17:51:19,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 17:51:19,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:19" (1/1) ... [2022-03-03 17:51:19,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:51:19,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:51:19,846 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-03 17:51:19,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-03 17:51:19,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-03 17:51:19,870 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 17:51:19,870 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 17:51:19,870 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 17:51:19,870 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 17:51:19,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-03 17:51:19,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-03 17:51:19,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-03 17:51:19,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-03 17:51:19,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-03 17:51:19,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 17:51:19,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 17:51:19,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-03 17:51:19,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-03 17:51:19,872 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 17:51:19,923 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 17:51:19,924 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 17:51:20,067 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 17:51:20,074 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 17:51:20,074 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-03 17:51:20,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:51:20 BoogieIcfgContainer [2022-03-03 17:51:20,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 17:51:20,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 17:51:20,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 17:51:20,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 17:51:20,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 05:51:19" (1/3) ... [2022-03-03 17:51:20,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270cf7c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:51:20, skipping insertion in model container [2022-03-03 17:51:20,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:51:19" (2/3) ... [2022-03-03 17:51:20,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270cf7c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:51:20, skipping insertion in model container [2022-03-03 17:51:20,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:51:20" (3/3) ... [2022-03-03 17:51:20,086 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2022-03-03 17:51:20,089 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 17:51:20,090 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 17:51:20,090 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 17:51:20,090 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 17:51:20,134 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,134 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,135 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,135 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,135 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,135 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,136 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,136 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,136 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,136 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,136 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,137 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,138 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,138 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,138 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,138 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,138 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,139 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,139 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,139 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,139 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,139 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,139 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,140 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,140 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,140 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,140 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,141 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,141 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,141 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,141 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,141 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,141 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,141 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,142 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,142 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,145 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,146 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,146 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,146 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,156 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,156 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,156 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,157 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:51:20,162 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-03 17:51:20,212 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 17:51:20,217 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-03 17:51:20,217 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-03 17:51:20,229 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 88 places, 87 transitions, 190 flow [2022-03-03 17:51:20,294 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 530 states, 529 states have (on average 2.667296786389414) internal successors, (1411), 529 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:20,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 530 states, 529 states have (on average 2.667296786389414) internal successors, (1411), 529 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:20,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-03 17:51:20,317 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:20,318 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] [2022-03-03 17:51:20,320 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:20,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:20,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1367960911, now seen corresponding path program 1 times [2022-03-03 17:51:20,333 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:20,334 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85477335] [2022-03-03 17:51:20,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:20,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:20,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:20,531 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:20,531 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85477335] [2022-03-03 17:51:20,531 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85477335] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:20,531 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:20,532 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-03 17:51:20,533 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085528666] [2022-03-03 17:51:20,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:20,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-03 17:51:20,536 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:20,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-03 17:51:20,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-03 17:51:20,560 INFO L87 Difference]: Start difference. First operand has 530 states, 529 states have (on average 2.667296786389414) internal successors, (1411), 529 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:20,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:20,604 INFO L93 Difference]: Finished difference Result 530 states and 1320 transitions. [2022-03-03 17:51:20,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-03 17:51:20,606 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-03 17:51:20,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:20,619 INFO L225 Difference]: With dead ends: 530 [2022-03-03 17:51:20,619 INFO L226 Difference]: Without dead ends: 528 [2022-03-03 17:51:20,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-03 17:51:20,623 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:20,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:51:20,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-03-03 17:51:20,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2022-03-03 17:51:20,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 2.5009487666034156) internal successors, (1318), 527 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:20,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1318 transitions. [2022-03-03 17:51:20,683 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1318 transitions. Word has length 62 [2022-03-03 17:51:20,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:20,683 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 1318 transitions. [2022-03-03 17:51:20,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:20,684 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1318 transitions. [2022-03-03 17:51:20,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-03 17:51:20,686 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:20,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:20,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 17:51:20,686 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:20,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:20,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1425985199, now seen corresponding path program 1 times [2022-03-03 17:51:20,687 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:20,687 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736385504] [2022-03-03 17:51:20,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:20,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:21,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:21,011 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:21,011 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736385504] [2022-03-03 17:51:21,011 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736385504] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:21,011 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:21,011 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-03 17:51:21,011 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655120188] [2022-03-03 17:51:21,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:21,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:51:21,013 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:21,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:51:21,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:51:21,014 INFO L87 Difference]: Start difference. First operand 528 states and 1318 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:21,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:21,275 INFO L93 Difference]: Finished difference Result 830 states and 2079 transitions. [2022-03-03 17:51:21,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:51:21,275 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-03 17:51:21,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:21,281 INFO L225 Difference]: With dead ends: 830 [2022-03-03 17:51:21,281 INFO L226 Difference]: Without dead ends: 764 [2022-03-03 17:51:21,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:51:21,285 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 [2022-03-03 17:51:21,286 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] [2022-03-03 17:51:21,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-03-03 17:51:21,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 619. [2022-03-03 17:51:21,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 618 states have (on average 2.483818770226537) internal successors, (1535), 618 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:21,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1535 transitions. [2022-03-03 17:51:21,328 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1535 transitions. Word has length 62 [2022-03-03 17:51:21,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:21,328 INFO L470 AbstractCegarLoop]: Abstraction has 619 states and 1535 transitions. [2022-03-03 17:51:21,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:21,328 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1535 transitions. [2022-03-03 17:51:21,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-03 17:51:21,352 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:21,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:21,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-03 17:51:21,353 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:21,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:21,353 INFO L85 PathProgramCache]: Analyzing trace with hash 2050221647, now seen corresponding path program 2 times [2022-03-03 17:51:21,354 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:21,354 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764147419] [2022-03-03 17:51:21,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:21,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:21,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:21,612 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:21,612 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764147419] [2022-03-03 17:51:21,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764147419] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:21,612 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:21,612 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-03 17:51:21,612 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419332071] [2022-03-03 17:51:21,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:21,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:51:21,613 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:21,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:51:21,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:51:21,614 INFO L87 Difference]: Start difference. First operand 619 states and 1535 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:21,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:21,856 INFO L93 Difference]: Finished difference Result 738 states and 1846 transitions. [2022-03-03 17:51:21,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:51:21,857 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-03 17:51:21,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:21,861 INFO L225 Difference]: With dead ends: 738 [2022-03-03 17:51:21,861 INFO L226 Difference]: Without dead ends: 675 [2022-03-03 17:51:21,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:51:21,867 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 123 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:21,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 868 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:51:21,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2022-03-03 17:51:21,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 627. [2022-03-03 17:51:21,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 626 states have (on average 2.487220447284345) internal successors, (1557), 626 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:21,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 1557 transitions. [2022-03-03 17:51:21,887 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 1557 transitions. Word has length 62 [2022-03-03 17:51:21,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:21,888 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 1557 transitions. [2022-03-03 17:51:21,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:21,889 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 1557 transitions. [2022-03-03 17:51:21,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-03 17:51:21,892 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:21,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:21,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-03 17:51:21,893 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:21,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:21,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1996637171, now seen corresponding path program 3 times [2022-03-03 17:51:21,894 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:21,894 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116742] [2022-03-03 17:51:21,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:21,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:22,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:22,115 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:22,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116742] [2022-03-03 17:51:22,115 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116742] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:22,115 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:22,115 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-03 17:51:22,115 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901839559] [2022-03-03 17:51:22,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:22,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:51:22,116 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:22,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:51:22,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:51:22,116 INFO L87 Difference]: Start difference. First operand 627 states and 1557 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:22,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:22,367 INFO L93 Difference]: Finished difference Result 741 states and 1848 transitions. [2022-03-03 17:51:22,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:51:22,367 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-03 17:51:22,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:22,371 INFO L225 Difference]: With dead ends: 741 [2022-03-03 17:51:22,371 INFO L226 Difference]: Without dead ends: 671 [2022-03-03 17:51:22,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:51:22,376 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 126 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:22,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 819 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:51:22,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-03-03 17:51:22,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 623. [2022-03-03 17:51:22,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 622 states have (on average 2.485530546623794) internal successors, (1546), 622 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:22,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1546 transitions. [2022-03-03 17:51:22,391 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1546 transitions. Word has length 62 [2022-03-03 17:51:22,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:22,393 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 1546 transitions. [2022-03-03 17:51:22,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:22,393 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1546 transitions. [2022-03-03 17:51:22,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-03 17:51:22,395 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:22,395 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] [2022-03-03 17:51:22,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-03 17:51:22,395 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:22,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:22,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1798753555, now seen corresponding path program 4 times [2022-03-03 17:51:22,397 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:22,397 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041412736] [2022-03-03 17:51:22,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:22,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:22,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:22,591 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:22,591 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041412736] [2022-03-03 17:51:22,591 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041412736] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:22,591 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:22,591 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-03 17:51:22,592 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871761548] [2022-03-03 17:51:22,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:22,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:51:22,592 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:22,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:51:22,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:51:22,593 INFO L87 Difference]: Start difference. First operand 623 states and 1546 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:22,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:22,836 INFO L93 Difference]: Finished difference Result 782 states and 1957 transitions. [2022-03-03 17:51:22,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:51:22,837 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-03 17:51:22,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:22,840 INFO L225 Difference]: With dead ends: 782 [2022-03-03 17:51:22,840 INFO L226 Difference]: Without dead ends: 716 [2022-03-03 17:51:22,840 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 [2022-03-03 17:51:22,841 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 132 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:22,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 968 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:51:22,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-03-03 17:51:22,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 623. [2022-03-03 17:51:22,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 622 states have (on average 2.485530546623794) internal successors, (1546), 622 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:22,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1546 transitions. [2022-03-03 17:51:22,857 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1546 transitions. Word has length 62 [2022-03-03 17:51:22,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:22,857 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 1546 transitions. [2022-03-03 17:51:22,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:22,857 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1546 transitions. [2022-03-03 17:51:22,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-03 17:51:22,859 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:22,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:22,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-03 17:51:22,859 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:22,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:22,860 INFO L85 PathProgramCache]: Analyzing trace with hash -21741301, now seen corresponding path program 5 times [2022-03-03 17:51:22,861 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:22,861 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263690479] [2022-03-03 17:51:22,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:22,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:23,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:23,053 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:23,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263690479] [2022-03-03 17:51:23,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263690479] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:23,053 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:23,053 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-03 17:51:23,053 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637746682] [2022-03-03 17:51:23,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:23,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 17:51:23,054 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:23,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 17:51:23,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-03-03 17:51:23,054 INFO L87 Difference]: Start difference. First operand 623 states and 1546 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:23,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:23,253 INFO L93 Difference]: Finished difference Result 838 states and 2145 transitions. [2022-03-03 17:51:23,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:51:23,254 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-03 17:51:23,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:23,257 INFO L225 Difference]: With dead ends: 838 [2022-03-03 17:51:23,257 INFO L226 Difference]: Without dead ends: 775 [2022-03-03 17:51:23,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:51:23,258 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 155 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:23,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 768 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:51:23,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-03-03 17:51:23,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 643. [2022-03-03 17:51:23,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 2.5062305295950154) internal successors, (1609), 642 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:23,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1609 transitions. [2022-03-03 17:51:23,276 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1609 transitions. Word has length 62 [2022-03-03 17:51:23,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:23,276 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1609 transitions. [2022-03-03 17:51:23,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:23,277 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1609 transitions. [2022-03-03 17:51:23,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-03 17:51:23,278 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:23,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:23,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-03 17:51:23,278 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:23,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:23,279 INFO L85 PathProgramCache]: Analyzing trace with hash -742951413, now seen corresponding path program 6 times [2022-03-03 17:51:23,279 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:23,279 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877010519] [2022-03-03 17:51:23,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:23,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:23,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:23,443 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:23,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877010519] [2022-03-03 17:51:23,443 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877010519] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:23,443 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:23,443 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-03 17:51:23,443 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503557210] [2022-03-03 17:51:23,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:23,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:51:23,449 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:23,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:51:23,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:51:23,450 INFO L87 Difference]: Start difference. First operand 643 states and 1609 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:23,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:23,620 INFO L93 Difference]: Finished difference Result 806 states and 2057 transitions. [2022-03-03 17:51:23,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:51:23,620 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-03 17:51:23,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:23,623 INFO L225 Difference]: With dead ends: 806 [2022-03-03 17:51:23,623 INFO L226 Difference]: Without dead ends: 743 [2022-03-03 17:51:23,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:51:23,625 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 105 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:23,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 657 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:51:23,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-03-03 17:51:23,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 647. [2022-03-03 17:51:23,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 2.501547987616099) internal successors, (1616), 646 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:23,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1616 transitions. [2022-03-03 17:51:23,638 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1616 transitions. Word has length 62 [2022-03-03 17:51:23,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:23,638 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 1616 transitions. [2022-03-03 17:51:23,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:23,639 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1616 transitions. [2022-03-03 17:51:23,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-03 17:51:23,640 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:23,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:23,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-03 17:51:23,640 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:23,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:23,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1967045189, now seen corresponding path program 7 times [2022-03-03 17:51:23,641 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:23,641 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383067370] [2022-03-03 17:51:23,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:23,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:23,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:23,827 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:23,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383067370] [2022-03-03 17:51:23,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383067370] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:23,827 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:23,827 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-03 17:51:23,827 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205220216] [2022-03-03 17:51:23,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:23,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:51:23,828 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:23,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:51:23,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:51:23,828 INFO L87 Difference]: Start difference. First operand 647 states and 1616 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:24,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:24,037 INFO L93 Difference]: Finished difference Result 809 states and 2059 transitions. [2022-03-03 17:51:24,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:51:24,037 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-03 17:51:24,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:24,040 INFO L225 Difference]: With dead ends: 809 [2022-03-03 17:51:24,040 INFO L226 Difference]: Without dead ends: 739 [2022-03-03 17:51:24,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:51:24,041 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 143 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:24,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 697 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:51:24,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-03-03 17:51:24,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 643. [2022-03-03 17:51:24,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 2.5) internal successors, (1605), 642 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:24,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1605 transitions. [2022-03-03 17:51:24,055 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1605 transitions. Word has length 62 [2022-03-03 17:51:24,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:24,055 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1605 transitions. [2022-03-03 17:51:24,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:24,055 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1605 transitions. [2022-03-03 17:51:24,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-03 17:51:24,060 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:24,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:24,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-03 17:51:24,060 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:24,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:24,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1153891209, now seen corresponding path program 8 times [2022-03-03 17:51:24,061 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:24,061 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131936323] [2022-03-03 17:51:24,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:24,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:24,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:24,228 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:24,228 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131936323] [2022-03-03 17:51:24,228 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131936323] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:24,228 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:24,228 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-03 17:51:24,229 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303363848] [2022-03-03 17:51:24,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:24,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:51:24,229 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:24,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:51:24,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:51:24,229 INFO L87 Difference]: Start difference. First operand 643 states and 1605 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:24,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:24,475 INFO L93 Difference]: Finished difference Result 810 states and 2064 transitions. [2022-03-03 17:51:24,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:51:24,475 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-03 17:51:24,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:24,478 INFO L225 Difference]: With dead ends: 810 [2022-03-03 17:51:24,478 INFO L226 Difference]: Without dead ends: 747 [2022-03-03 17:51:24,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:51:24,479 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 116 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:24,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 862 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:51:24,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-03-03 17:51:24,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 651. [2022-03-03 17:51:24,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 650 states have (on average 2.503076923076923) internal successors, (1627), 650 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:24,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1627 transitions. [2022-03-03 17:51:24,491 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1627 transitions. Word has length 62 [2022-03-03 17:51:24,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:24,492 INFO L470 AbstractCegarLoop]: Abstraction has 651 states and 1627 transitions. [2022-03-03 17:51:24,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:24,492 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1627 transitions. [2022-03-03 17:51:24,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-03 17:51:24,494 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:24,494 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] [2022-03-03 17:51:24,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-03 17:51:24,494 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:24,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:24,494 INFO L85 PathProgramCache]: Analyzing trace with hash -431079485, now seen corresponding path program 9 times [2022-03-03 17:51:24,495 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:24,495 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050721186] [2022-03-03 17:51:24,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:24,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:24,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:24,640 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:24,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050721186] [2022-03-03 17:51:24,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050721186] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:24,643 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:24,643 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-03 17:51:24,643 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895379439] [2022-03-03 17:51:24,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:24,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:51:24,643 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:24,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:51:24,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:51:24,644 INFO L87 Difference]: Start difference. First operand 651 states and 1627 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:24,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:24,918 INFO L93 Difference]: Finished difference Result 813 states and 2066 transitions. [2022-03-03 17:51:24,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:51:24,918 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-03 17:51:24,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:24,921 INFO L225 Difference]: With dead ends: 813 [2022-03-03 17:51:24,922 INFO L226 Difference]: Without dead ends: 743 [2022-03-03 17:51:24,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:51:24,922 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 163 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:24,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 839 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:51:24,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-03-03 17:51:24,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 647. [2022-03-03 17:51:24,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 2.501547987616099) internal successors, (1616), 646 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:24,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1616 transitions. [2022-03-03 17:51:24,937 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1616 transitions. Word has length 62 [2022-03-03 17:51:24,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:24,937 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 1616 transitions. [2022-03-03 17:51:24,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:24,938 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1616 transitions. [2022-03-03 17:51:24,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-03 17:51:24,939 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:24,939 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] [2022-03-03 17:51:24,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-03 17:51:24,940 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:24,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:24,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1717688431, now seen corresponding path program 10 times [2022-03-03 17:51:24,940 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:24,941 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270547310] [2022-03-03 17:51:24,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:24,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:25,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:25,104 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:25,104 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270547310] [2022-03-03 17:51:25,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270547310] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:25,105 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:25,105 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-03 17:51:25,105 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797330071] [2022-03-03 17:51:25,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:25,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:51:25,105 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:25,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:51:25,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:51:25,106 INFO L87 Difference]: Start difference. First operand 647 states and 1616 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:25,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:25,378 INFO L93 Difference]: Finished difference Result 854 states and 2175 transitions. [2022-03-03 17:51:25,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:51:25,379 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-03 17:51:25,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:25,382 INFO L225 Difference]: With dead ends: 854 [2022-03-03 17:51:25,382 INFO L226 Difference]: Without dead ends: 788 [2022-03-03 17:51:25,382 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 [2022-03-03 17:51:25,383 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 102 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:25,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 961 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:51:25,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-03-03 17:51:25,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 643. [2022-03-03 17:51:25,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 2.5) internal successors, (1605), 642 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:25,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1605 transitions. [2022-03-03 17:51:25,395 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1605 transitions. Word has length 62 [2022-03-03 17:51:25,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:25,395 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1605 transitions. [2022-03-03 17:51:25,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:25,396 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1605 transitions. [2022-03-03 17:51:25,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-03 17:51:25,397 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:25,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:25,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-03 17:51:25,397 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:25,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:25,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1996739535, now seen corresponding path program 11 times [2022-03-03 17:51:25,398 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:25,398 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225747351] [2022-03-03 17:51:25,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:25,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:25,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:25,537 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:25,537 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225747351] [2022-03-03 17:51:25,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225747351] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:25,538 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:25,538 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-03 17:51:25,538 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14819493] [2022-03-03 17:51:25,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:25,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:51:25,538 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:25,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:51:25,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:51:25,539 INFO L87 Difference]: Start difference. First operand 643 states and 1605 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:25,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:25,752 INFO L93 Difference]: Finished difference Result 882 states and 2234 transitions. [2022-03-03 17:51:25,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:51:25,752 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-03 17:51:25,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:25,756 INFO L225 Difference]: With dead ends: 882 [2022-03-03 17:51:25,756 INFO L226 Difference]: Without dead ends: 819 [2022-03-03 17:51:25,756 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 [2022-03-03 17:51:25,757 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 116 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:25,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 1003 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:51:25,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-03-03 17:51:25,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 683. [2022-03-03 17:51:25,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 2.5146627565982405) internal successors, (1715), 682 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:25,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1715 transitions. [2022-03-03 17:51:25,770 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1715 transitions. Word has length 62 [2022-03-03 17:51:25,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:25,770 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 1715 transitions. [2022-03-03 17:51:25,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:25,770 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1715 transitions. [2022-03-03 17:51:25,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-03 17:51:25,771 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:25,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:25,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-03 17:51:25,772 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:25,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:25,772 INFO L85 PathProgramCache]: Analyzing trace with hash -931759, now seen corresponding path program 12 times [2022-03-03 17:51:25,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:25,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472164146] [2022-03-03 17:51:25,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:25,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:25,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:25,906 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:25,906 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472164146] [2022-03-03 17:51:25,906 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472164146] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:25,906 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:25,906 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-03 17:51:25,906 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878130136] [2022-03-03 17:51:25,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:25,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:51:25,907 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:25,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:51:25,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:51:25,907 INFO L87 Difference]: Start difference. First operand 683 states and 1715 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:26,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:26,123 INFO L93 Difference]: Finished difference Result 850 states and 2154 transitions. [2022-03-03 17:51:26,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:51:26,123 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-03 17:51:26,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:26,126 INFO L225 Difference]: With dead ends: 850 [2022-03-03 17:51:26,126 INFO L226 Difference]: Without dead ends: 787 [2022-03-03 17:51:26,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:51:26,127 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 157 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:26,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 862 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:51:26,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-03-03 17:51:26,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 687. [2022-03-03 17:51:26,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 2.521865889212828) internal successors, (1730), 686 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:26,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1730 transitions. [2022-03-03 17:51:26,139 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1730 transitions. Word has length 62 [2022-03-03 17:51:26,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:26,139 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 1730 transitions. [2022-03-03 17:51:26,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:26,140 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1730 transitions. [2022-03-03 17:51:26,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-03 17:51:26,141 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:26,141 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:26,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-03 17:51:26,141 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:26,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:26,141 INFO L85 PathProgramCache]: Analyzing trace with hash -722141871, now seen corresponding path program 13 times [2022-03-03 17:51:26,141 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:26,141 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919971171] [2022-03-03 17:51:26,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:26,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:26,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:26,277 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:26,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919971171] [2022-03-03 17:51:26,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919971171] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:26,277 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:26,277 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-03 17:51:26,277 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683196015] [2022-03-03 17:51:26,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:26,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:51:26,278 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:26,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:51:26,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:51:26,278 INFO L87 Difference]: Start difference. First operand 687 states and 1730 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:26,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:26,486 INFO L93 Difference]: Finished difference Result 802 states and 2026 transitions. [2022-03-03 17:51:26,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:51:26,486 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-03 17:51:26,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:26,489 INFO L225 Difference]: With dead ends: 802 [2022-03-03 17:51:26,489 INFO L226 Difference]: Without dead ends: 739 [2022-03-03 17:51:26,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:51:26,489 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 122 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:26,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 854 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:51:26,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-03-03 17:51:26,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 691. [2022-03-03 17:51:26,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 690 states have (on average 2.517391304347826) internal successors, (1737), 690 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:26,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1737 transitions. [2022-03-03 17:51:26,500 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1737 transitions. Word has length 62 [2022-03-03 17:51:26,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:26,500 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 1737 transitions. [2022-03-03 17:51:26,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:26,500 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1737 transitions. [2022-03-03 17:51:26,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-03 17:51:26,501 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:26,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:26,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-03 17:51:26,502 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:26,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:26,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1987854731, now seen corresponding path program 14 times [2022-03-03 17:51:26,502 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:26,502 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192285870] [2022-03-03 17:51:26,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:26,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:26,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:26,631 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:26,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192285870] [2022-03-03 17:51:26,631 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192285870] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:26,631 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:26,631 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-03 17:51:26,631 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668681652] [2022-03-03 17:51:26,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:26,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:51:26,632 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:26,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:51:26,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:51:26,632 INFO L87 Difference]: Start difference. First operand 691 states and 1737 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:26,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:26,826 INFO L93 Difference]: Finished difference Result 805 states and 2028 transitions. [2022-03-03 17:51:26,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:51:26,827 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-03 17:51:26,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:26,829 INFO L225 Difference]: With dead ends: 805 [2022-03-03 17:51:26,829 INFO L226 Difference]: Without dead ends: 735 [2022-03-03 17:51:26,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:51:26,830 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 108 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:26,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 887 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:51:26,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-03-03 17:51:26,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 683. [2022-03-03 17:51:26,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 2.5146627565982405) internal successors, (1715), 682 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:26,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1715 transitions. [2022-03-03 17:51:26,840 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1715 transitions. Word has length 62 [2022-03-03 17:51:26,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:26,840 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 1715 transitions. [2022-03-03 17:51:26,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:26,840 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1715 transitions. [2022-03-03 17:51:26,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-03 17:51:26,841 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:26,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:26,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-03 17:51:26,842 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:26,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:26,842 INFO L85 PathProgramCache]: Analyzing trace with hash -127774901, now seen corresponding path program 15 times [2022-03-03 17:51:26,842 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:26,842 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288441118] [2022-03-03 17:51:26,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:26,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:26,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:26,979 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:26,979 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288441118] [2022-03-03 17:51:26,979 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288441118] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:26,979 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:26,979 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-03 17:51:26,979 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166645529] [2022-03-03 17:51:26,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:26,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:51:26,979 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:26,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:51:26,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:51:26,980 INFO L87 Difference]: Start difference. First operand 683 states and 1715 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:27,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:27,213 INFO L93 Difference]: Finished difference Result 910 states and 2347 transitions. [2022-03-03 17:51:27,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:51:27,214 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-03 17:51:27,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:27,217 INFO L225 Difference]: With dead ends: 910 [2022-03-03 17:51:27,217 INFO L226 Difference]: Without dead ends: 847 [2022-03-03 17:51:27,217 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 [2022-03-03 17:51:27,217 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 159 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:27,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 790 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:51:27,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-03-03 17:51:27,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 691. [2022-03-03 17:51:27,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 690 states have (on average 2.534782608695652) internal successors, (1749), 690 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:27,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1749 transitions. [2022-03-03 17:51:27,228 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1749 transitions. Word has length 62 [2022-03-03 17:51:27,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:27,228 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 1749 transitions. [2022-03-03 17:51:27,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:27,228 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1749 transitions. [2022-03-03 17:51:27,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-03 17:51:27,230 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:27,230 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] [2022-03-03 17:51:27,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-03 17:51:27,230 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:27,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:27,230 INFO L85 PathProgramCache]: Analyzing trace with hash -848985013, now seen corresponding path program 16 times [2022-03-03 17:51:27,231 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:27,231 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463131110] [2022-03-03 17:51:27,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:27,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:27,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:27,341 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:27,341 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463131110] [2022-03-03 17:51:27,341 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463131110] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:27,341 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:27,341 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-03 17:51:27,341 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918405168] [2022-03-03 17:51:27,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:27,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:51:27,342 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:27,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:51:27,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:51:27,342 INFO L87 Difference]: Start difference. First operand 691 states and 1749 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:27,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:27,542 INFO L93 Difference]: Finished difference Result 866 states and 2230 transitions. [2022-03-03 17:51:27,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:51:27,543 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-03 17:51:27,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:27,546 INFO L225 Difference]: With dead ends: 866 [2022-03-03 17:51:27,546 INFO L226 Difference]: Without dead ends: 803 [2022-03-03 17:51:27,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:51:27,548 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 123 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:27,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 714 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:51:27,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-03-03 17:51:27,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 695. [2022-03-03 17:51:27,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 694 states have (on average 2.5302593659942363) internal successors, (1756), 694 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:27,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1756 transitions. [2022-03-03 17:51:27,558 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1756 transitions. Word has length 62 [2022-03-03 17:51:27,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:27,558 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 1756 transitions. [2022-03-03 17:51:27,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:27,559 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1756 transitions. [2022-03-03 17:51:27,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-03 17:51:27,560 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:27,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:27,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-03 17:51:27,560 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:27,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:27,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1861011589, now seen corresponding path program 17 times [2022-03-03 17:51:27,560 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:27,560 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18000425] [2022-03-03 17:51:27,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:27,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:27,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:27,685 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:27,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18000425] [2022-03-03 17:51:27,686 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18000425] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:27,686 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:27,686 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-03 17:51:27,686 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375406454] [2022-03-03 17:51:27,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:27,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:51:27,686 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:27,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:51:27,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:51:27,687 INFO L87 Difference]: Start difference. First operand 695 states and 1756 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:27,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:27,917 INFO L93 Difference]: Finished difference Result 869 states and 2232 transitions. [2022-03-03 17:51:27,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:51:27,917 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-03 17:51:27,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:27,920 INFO L225 Difference]: With dead ends: 869 [2022-03-03 17:51:27,920 INFO L226 Difference]: Without dead ends: 799 [2022-03-03 17:51:27,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:51:27,921 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 106 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:27,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 830 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:51:27,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-03-03 17:51:27,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 687. [2022-03-03 17:51:27,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 2.5276967930029155) internal successors, (1734), 686 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:27,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1734 transitions. [2022-03-03 17:51:27,931 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1734 transitions. Word has length 62 [2022-03-03 17:51:27,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:27,931 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 1734 transitions. [2022-03-03 17:51:27,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:27,931 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1734 transitions. [2022-03-03 17:51:27,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-03 17:51:27,933 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:27,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:27,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-03 17:51:27,933 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:27,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:27,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1047857609, now seen corresponding path program 18 times [2022-03-03 17:51:27,933 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:27,933 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292171545] [2022-03-03 17:51:27,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:27,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:28,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:28,059 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:28,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292171545] [2022-03-03 17:51:28,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292171545] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:28,059 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:28,059 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-03 17:51:28,060 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60575930] [2022-03-03 17:51:28,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:28,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:51:28,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:28,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:51:28,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:51:28,061 INFO L87 Difference]: Start difference. First operand 687 states and 1734 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:28,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:28,308 INFO L93 Difference]: Finished difference Result 850 states and 2182 transitions. [2022-03-03 17:51:28,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:51:28,308 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-03 17:51:28,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:28,311 INFO L225 Difference]: With dead ends: 850 [2022-03-03 17:51:28,311 INFO L226 Difference]: Without dead ends: 787 [2022-03-03 17:51:28,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:51:28,312 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 103 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:28,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 867 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:51:28,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-03-03 17:51:28,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 695. [2022-03-03 17:51:28,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 694 states have (on average 2.5302593659942363) internal successors, (1756), 694 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:28,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1756 transitions. [2022-03-03 17:51:28,346 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1756 transitions. Word has length 62 [2022-03-03 17:51:28,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:28,346 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 1756 transitions. [2022-03-03 17:51:28,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:28,346 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1756 transitions. [2022-03-03 17:51:28,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-03 17:51:28,347 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:28,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:28,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-03 17:51:28,348 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:28,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:28,348 INFO L85 PathProgramCache]: Analyzing trace with hash -537113085, now seen corresponding path program 19 times [2022-03-03 17:51:28,348 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:28,348 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568073149] [2022-03-03 17:51:28,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:28,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:28,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:28,478 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:28,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568073149] [2022-03-03 17:51:28,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568073149] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:28,478 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:28,478 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-03 17:51:28,478 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383969210] [2022-03-03 17:51:28,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:28,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:51:28,479 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:28,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:51:28,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:51:28,479 INFO L87 Difference]: Start difference. First operand 695 states and 1756 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:28,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:28,684 INFO L93 Difference]: Finished difference Result 853 states and 2184 transitions. [2022-03-03 17:51:28,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:51:28,684 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-03 17:51:28,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:28,687 INFO L225 Difference]: With dead ends: 853 [2022-03-03 17:51:28,687 INFO L226 Difference]: Without dead ends: 783 [2022-03-03 17:51:28,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:51:28,688 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 123 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:28,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 737 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:51:28,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2022-03-03 17:51:28,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 691. [2022-03-03 17:51:28,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 690 states have (on average 2.528985507246377) internal successors, (1745), 690 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:28,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1745 transitions. [2022-03-03 17:51:28,698 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1745 transitions. Word has length 62 [2022-03-03 17:51:28,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:28,698 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 1745 transitions. [2022-03-03 17:51:28,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:28,699 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1745 transitions. [2022-03-03 17:51:28,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-03 17:51:28,700 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:28,700 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:28,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-03 17:51:28,700 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:28,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:28,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1823722031, now seen corresponding path program 20 times [2022-03-03 17:51:28,700 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:28,700 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850397076] [2022-03-03 17:51:28,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:28,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:28,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:28,832 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:28,832 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850397076] [2022-03-03 17:51:28,832 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850397076] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:28,833 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:28,833 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-03 17:51:28,833 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862257974] [2022-03-03 17:51:28,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:28,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:51:28,833 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:28,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:51:28,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:51:28,834 INFO L87 Difference]: Start difference. First operand 691 states and 1745 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:29,062 INFO L93 Difference]: Finished difference Result 894 states and 2293 transitions. [2022-03-03 17:51:29,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:51:29,062 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-03 17:51:29,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:29,067 INFO L225 Difference]: With dead ends: 894 [2022-03-03 17:51:29,067 INFO L226 Difference]: Without dead ends: 828 [2022-03-03 17:51:29,067 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 [2022-03-03 17:51:29,068 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 113 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:29,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 966 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:51:29,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2022-03-03 17:51:29,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 683. [2022-03-03 17:51:29,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 2.5146627565982405) internal successors, (1715), 682 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1715 transitions. [2022-03-03 17:51:29,081 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1715 transitions. Word has length 62 [2022-03-03 17:51:29,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:29,081 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 1715 transitions. [2022-03-03 17:51:29,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,082 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1715 transitions. [2022-03-03 17:51:29,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-03 17:51:29,083 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:29,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:29,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-03 17:51:29,084 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:29,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:29,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1062789427, now seen corresponding path program 1 times [2022-03-03 17:51:29,084 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:29,084 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220465576] [2022-03-03 17:51:29,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:29,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:29,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:29,107 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:29,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220465576] [2022-03-03 17:51:29,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220465576] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:29,107 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:29,107 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:51:29,107 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827998661] [2022-03-03 17:51:29,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:29,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:51:29,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:29,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:51:29,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:51:29,108 INFO L87 Difference]: Start difference. First operand 683 states and 1715 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:29,161 INFO L93 Difference]: Finished difference Result 987 states and 2483 transitions. [2022-03-03 17:51:29,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 17:51:29,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-03 17:51:29,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:29,164 INFO L225 Difference]: With dead ends: 987 [2022-03-03 17:51:29,164 INFO L226 Difference]: Without dead ends: 906 [2022-03-03 17:51:29,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:51:29,165 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 99 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:29,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 330 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:51:29,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2022-03-03 17:51:29,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 621. [2022-03-03 17:51:29,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 620 states have (on average 2.5274193548387096) internal successors, (1567), 620 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 1567 transitions. [2022-03-03 17:51:29,175 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 1567 transitions. Word has length 66 [2022-03-03 17:51:29,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:29,175 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 1567 transitions. [2022-03-03 17:51:29,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,175 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 1567 transitions. [2022-03-03 17:51:29,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-03 17:51:29,176 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:29,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:29,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-03 17:51:29,176 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:29,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:29,177 INFO L85 PathProgramCache]: Analyzing trace with hash -80553619, now seen corresponding path program 1 times [2022-03-03 17:51:29,177 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:29,177 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696534801] [2022-03-03 17:51:29,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:29,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:29,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:29,196 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:29,196 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696534801] [2022-03-03 17:51:29,196 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696534801] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:29,196 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:29,196 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:51:29,196 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784064064] [2022-03-03 17:51:29,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:29,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:51:29,197 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:29,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:51:29,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:51:29,197 INFO L87 Difference]: Start difference. First operand 621 states and 1567 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:29,256 INFO L93 Difference]: Finished difference Result 949 states and 2424 transitions. [2022-03-03 17:51:29,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-03 17:51:29,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-03 17:51:29,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:29,259 INFO L225 Difference]: With dead ends: 949 [2022-03-03 17:51:29,259 INFO L226 Difference]: Without dead ends: 949 [2022-03-03 17:51:29,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-03 17:51:29,260 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 128 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:29,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 334 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:51:29,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2022-03-03 17:51:29,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 637. [2022-03-03 17:51:29,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 636 states have (on average 2.539308176100629) internal successors, (1615), 636 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1615 transitions. [2022-03-03 17:51:29,270 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1615 transitions. Word has length 66 [2022-03-03 17:51:29,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:29,270 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 1615 transitions. [2022-03-03 17:51:29,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,270 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1615 transitions. [2022-03-03 17:51:29,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-03 17:51:29,272 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:29,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:29,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-03 17:51:29,272 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:29,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:29,272 INFO L85 PathProgramCache]: Analyzing trace with hash 626763185, now seen corresponding path program 2 times [2022-03-03 17:51:29,272 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:29,272 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426110393] [2022-03-03 17:51:29,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:29,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:29,315 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:29,315 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426110393] [2022-03-03 17:51:29,315 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426110393] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:29,315 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:29,315 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:51:29,315 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947603763] [2022-03-03 17:51:29,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:29,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:51:29,315 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:29,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:51:29,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:51:29,316 INFO L87 Difference]: Start difference. First operand 637 states and 1615 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:29,379 INFO L93 Difference]: Finished difference Result 1128 states and 2881 transitions. [2022-03-03 17:51:29,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 17:51:29,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-03 17:51:29,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:29,382 INFO L225 Difference]: With dead ends: 1128 [2022-03-03 17:51:29,382 INFO L226 Difference]: Without dead ends: 1112 [2022-03-03 17:51:29,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-03 17:51:29,383 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 133 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:29,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 317 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:51:29,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2022-03-03 17:51:29,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 641. [2022-03-03 17:51:29,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 2.546875) internal successors, (1630), 640 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1630 transitions. [2022-03-03 17:51:29,394 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1630 transitions. Word has length 66 [2022-03-03 17:51:29,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:29,394 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 1630 transitions. [2022-03-03 17:51:29,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,394 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1630 transitions. [2022-03-03 17:51:29,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-03 17:51:29,395 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:29,395 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, 1, 1, 1, 1] [2022-03-03 17:51:29,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-03 17:51:29,396 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:29,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:29,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1732914939, now seen corresponding path program 2 times [2022-03-03 17:51:29,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:29,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756498762] [2022-03-03 17:51:29,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:29,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:29,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:29,417 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:29,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756498762] [2022-03-03 17:51:29,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756498762] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:29,417 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:29,417 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:51:29,417 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010772585] [2022-03-03 17:51:29,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:29,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:51:29,418 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:29,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:51:29,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:51:29,419 INFO L87 Difference]: Start difference. First operand 641 states and 1630 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:29,486 INFO L93 Difference]: Finished difference Result 1299 states and 3298 transitions. [2022-03-03 17:51:29,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 17:51:29,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-03 17:51:29,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:29,489 INFO L225 Difference]: With dead ends: 1299 [2022-03-03 17:51:29,489 INFO L226 Difference]: Without dead ends: 1299 [2022-03-03 17:51:29,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-03 17:51:29,490 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 146 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:29,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 356 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:51:29,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2022-03-03 17:51:29,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 657. [2022-03-03 17:51:29,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 2.557926829268293) internal successors, (1678), 656 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1678 transitions. [2022-03-03 17:51:29,502 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1678 transitions. Word has length 66 [2022-03-03 17:51:29,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:29,502 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 1678 transitions. [2022-03-03 17:51:29,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,502 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1678 transitions. [2022-03-03 17:51:29,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-03 17:51:29,503 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:29,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:29,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-03 17:51:29,503 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:29,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:29,504 INFO L85 PathProgramCache]: Analyzing trace with hash 2046949573, now seen corresponding path program 3 times [2022-03-03 17:51:29,504 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:29,504 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180305986] [2022-03-03 17:51:29,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:29,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:29,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:29,523 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:29,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180305986] [2022-03-03 17:51:29,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180305986] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:29,523 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:29,523 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:51:29,523 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317756001] [2022-03-03 17:51:29,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:29,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:51:29,524 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:29,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:51:29,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:51:29,524 INFO L87 Difference]: Start difference. First operand 657 states and 1678 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:29,590 INFO L93 Difference]: Finished difference Result 1084 states and 2770 transitions. [2022-03-03 17:51:29,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 17:51:29,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-03 17:51:29,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:29,593 INFO L225 Difference]: With dead ends: 1084 [2022-03-03 17:51:29,593 INFO L226 Difference]: Without dead ends: 1065 [2022-03-03 17:51:29,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-03 17:51:29,593 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 104 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:29,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 321 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:51:29,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2022-03-03 17:51:29,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 657. [2022-03-03 17:51:29,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 2.551829268292683) internal successors, (1674), 656 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1674 transitions. [2022-03-03 17:51:29,604 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1674 transitions. Word has length 66 [2022-03-03 17:51:29,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:29,605 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 1674 transitions. [2022-03-03 17:51:29,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,605 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1674 transitions. [2022-03-03 17:51:29,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-03 17:51:29,606 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:29,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:29,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-03 17:51:29,606 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:29,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:29,606 INFO L85 PathProgramCache]: Analyzing trace with hash 236497677, now seen corresponding path program 3 times [2022-03-03 17:51:29,607 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:29,607 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189709569] [2022-03-03 17:51:29,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:29,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:29,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:29,628 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:29,628 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189709569] [2022-03-03 17:51:29,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189709569] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:29,628 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:29,628 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:51:29,628 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519108716] [2022-03-03 17:51:29,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:29,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:51:29,628 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:29,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:51:29,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:51:29,629 INFO L87 Difference]: Start difference. First operand 657 states and 1674 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:29,707 INFO L93 Difference]: Finished difference Result 1112 states and 2849 transitions. [2022-03-03 17:51:29,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 17:51:29,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-03 17:51:29,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:29,709 INFO L225 Difference]: With dead ends: 1112 [2022-03-03 17:51:29,709 INFO L226 Difference]: Without dead ends: 1112 [2022-03-03 17:51:29,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-03 17:51:29,710 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 [2022-03-03 17:51:29,710 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] [2022-03-03 17:51:29,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2022-03-03 17:51:29,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 657. [2022-03-03 17:51:29,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 2.551829268292683) internal successors, (1674), 656 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1674 transitions. [2022-03-03 17:51:29,721 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1674 transitions. Word has length 66 [2022-03-03 17:51:29,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:29,721 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 1674 transitions. [2022-03-03 17:51:29,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,721 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1674 transitions. [2022-03-03 17:51:29,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-03 17:51:29,722 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:29,722 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:29,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-03 17:51:29,722 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:29,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:29,723 INFO L85 PathProgramCache]: Analyzing trace with hash -228837771, now seen corresponding path program 4 times [2022-03-03 17:51:29,723 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:29,723 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170687448] [2022-03-03 17:51:29,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:29,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:29,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:29,743 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:29,743 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170687448] [2022-03-03 17:51:29,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170687448] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:29,743 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:29,744 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:51:29,744 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357395375] [2022-03-03 17:51:29,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:29,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:51:29,744 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:29,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:51:29,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:51:29,744 INFO L87 Difference]: Start difference. First operand 657 states and 1674 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:29,803 INFO L93 Difference]: Finished difference Result 967 states and 2471 transitions. [2022-03-03 17:51:29,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 17:51:29,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-03 17:51:29,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:29,806 INFO L225 Difference]: With dead ends: 967 [2022-03-03 17:51:29,806 INFO L226 Difference]: Without dead ends: 919 [2022-03-03 17:51:29,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:51:29,806 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 102 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:29,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 308 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:51:29,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-03-03 17:51:29,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 625. [2022-03-03 17:51:29,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.5416666666666665) internal successors, (1586), 624 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1586 transitions. [2022-03-03 17:51:29,816 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1586 transitions. Word has length 66 [2022-03-03 17:51:29,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:29,816 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1586 transitions. [2022-03-03 17:51:29,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,816 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1586 transitions. [2022-03-03 17:51:29,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-03 17:51:29,817 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:29,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:29,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-03 17:51:29,818 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:29,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:29,818 INFO L85 PathProgramCache]: Analyzing trace with hash -583910423, now seen corresponding path program 4 times [2022-03-03 17:51:29,818 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:29,818 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113776537] [2022-03-03 17:51:29,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:29,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:29,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:29,838 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:29,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113776537] [2022-03-03 17:51:29,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113776537] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:29,838 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:29,838 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:51:29,838 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447703120] [2022-03-03 17:51:29,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:29,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:51:29,839 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:29,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:51:29,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:51:29,839 INFO L87 Difference]: Start difference. First operand 625 states and 1586 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:29,906 INFO L93 Difference]: Finished difference Result 959 states and 2469 transitions. [2022-03-03 17:51:29,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-03 17:51:29,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-03 17:51:29,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:29,909 INFO L225 Difference]: With dead ends: 959 [2022-03-03 17:51:29,909 INFO L226 Difference]: Without dead ends: 959 [2022-03-03 17:51:29,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-03 17:51:29,909 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 111 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:29,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 342 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:51:29,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-03-03 17:51:29,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 625. [2022-03-03 17:51:29,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.5416666666666665) internal successors, (1586), 624 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1586 transitions. [2022-03-03 17:51:29,919 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1586 transitions. Word has length 66 [2022-03-03 17:51:29,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:29,919 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1586 transitions. [2022-03-03 17:51:29,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:29,919 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1586 transitions. [2022-03-03 17:51:29,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-03 17:51:29,920 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:29,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:29,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-03 17:51:29,921 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:29,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:29,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1624806385, now seen corresponding path program 5 times [2022-03-03 17:51:29,921 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:29,921 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499713204] [2022-03-03 17:51:29,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:29,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:29,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:29,941 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:29,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499713204] [2022-03-03 17:51:29,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499713204] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:29,941 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:29,941 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:51:29,941 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993933078] [2022-03-03 17:51:29,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:29,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:51:29,942 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:29,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:51:29,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:51:29,942 INFO L87 Difference]: Start difference. First operand 625 states and 1586 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:30,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:30,035 INFO L93 Difference]: Finished difference Result 1086 states and 2779 transitions. [2022-03-03 17:51:30,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 17:51:30,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-03 17:51:30,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:30,037 INFO L225 Difference]: With dead ends: 1086 [2022-03-03 17:51:30,037 INFO L226 Difference]: Without dead ends: 1070 [2022-03-03 17:51:30,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-03 17:51:30,037 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 116 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:30,037 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] [2022-03-03 17:51:30,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2022-03-03 17:51:30,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 625. [2022-03-03 17:51:30,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.53525641025641) internal successors, (1582), 624 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:30,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1582 transitions. [2022-03-03 17:51:30,048 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1582 transitions. Word has length 66 [2022-03-03 17:51:30,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:30,048 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1582 transitions. [2022-03-03 17:51:30,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:30,048 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1582 transitions. [2022-03-03 17:51:30,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-03 17:51:30,049 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:30,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:30,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-03 17:51:30,049 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:30,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:30,050 INFO L85 PathProgramCache]: Analyzing trace with hash -734871739, now seen corresponding path program 5 times [2022-03-03 17:51:30,050 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:30,050 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805151811] [2022-03-03 17:51:30,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:30,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:30,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:30,072 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:30,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805151811] [2022-03-03 17:51:30,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805151811] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:30,072 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:30,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:51:30,072 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677230738] [2022-03-03 17:51:30,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:30,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:51:30,072 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:30,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:51:30,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:51:30,073 INFO L87 Difference]: Start difference. First operand 625 states and 1582 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:30,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:30,151 INFO L93 Difference]: Finished difference Result 1257 states and 3196 transitions. [2022-03-03 17:51:30,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 17:51:30,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-03 17:51:30,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:30,153 INFO L225 Difference]: With dead ends: 1257 [2022-03-03 17:51:30,153 INFO L226 Difference]: Without dead ends: 1257 [2022-03-03 17:51:30,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-03 17:51:30,155 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 132 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:30,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 333 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:51:30,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2022-03-03 17:51:30,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 625. [2022-03-03 17:51:30,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.53525641025641) internal successors, (1582), 624 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:30,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1582 transitions. [2022-03-03 17:51:30,166 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1582 transitions. Word has length 66 [2022-03-03 17:51:30,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:30,166 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1582 transitions. [2022-03-03 17:51:30,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:30,167 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1582 transitions. [2022-03-03 17:51:30,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-03 17:51:30,168 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:30,168 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:30,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-03 17:51:30,168 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:30,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:30,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1249974523, now seen corresponding path program 6 times [2022-03-03 17:51:30,169 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:30,169 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32188111] [2022-03-03 17:51:30,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:30,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:30,192 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:30,192 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32188111] [2022-03-03 17:51:30,193 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32188111] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:30,193 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:30,193 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:51:30,193 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614470600] [2022-03-03 17:51:30,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:30,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:51:30,193 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:30,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:51:30,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:51:30,194 INFO L87 Difference]: Start difference. First operand 625 states and 1582 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:30,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:30,263 INFO L93 Difference]: Finished difference Result 1018 states and 2598 transitions. [2022-03-03 17:51:30,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 17:51:30,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-03 17:51:30,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:30,265 INFO L225 Difference]: With dead ends: 1018 [2022-03-03 17:51:30,265 INFO L226 Difference]: Without dead ends: 999 [2022-03-03 17:51:30,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-03 17:51:30,267 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 124 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:30,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 302 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:51:30,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-03-03 17:51:30,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 625. [2022-03-03 17:51:30,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.5288461538461537) internal successors, (1578), 624 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:30,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1578 transitions. [2022-03-03 17:51:30,278 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1578 transitions. Word has length 66 [2022-03-03 17:51:30,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:30,278 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1578 transitions. [2022-03-03 17:51:30,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:30,278 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1578 transitions. [2022-03-03 17:51:30,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-03 17:51:30,279 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:30,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:30,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-03 17:51:30,279 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:30,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:30,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1234540877, now seen corresponding path program 6 times [2022-03-03 17:51:30,280 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:30,280 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956788137] [2022-03-03 17:51:30,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:30,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:30,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:30,300 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:30,300 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956788137] [2022-03-03 17:51:30,300 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956788137] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:51:30,300 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:51:30,300 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:51:30,301 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705508775] [2022-03-03 17:51:30,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:51:30,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:51:30,301 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:30,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:51:30,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:51:30,301 INFO L87 Difference]: Start difference. First operand 625 states and 1578 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:30,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:30,367 INFO L93 Difference]: Finished difference Result 862 states and 2198 transitions. [2022-03-03 17:51:30,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 17:51:30,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-03 17:51:30,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:30,369 INFO L225 Difference]: With dead ends: 862 [2022-03-03 17:51:30,370 INFO L226 Difference]: Without dead ends: 862 [2022-03-03 17:51:30,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-03 17:51:30,370 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 87 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:30,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 312 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:51:30,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2022-03-03 17:51:30,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 621. [2022-03-03 17:51:30,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 620 states have (on average 2.5274193548387096) internal successors, (1567), 620 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:30,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 1567 transitions. [2022-03-03 17:51:30,380 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 1567 transitions. Word has length 66 [2022-03-03 17:51:30,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:30,380 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 1567 transitions. [2022-03-03 17:51:30,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:30,381 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 1567 transitions. [2022-03-03 17:51:30,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:51:30,382 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:30,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:30,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-03 17:51:30,382 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:30,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:30,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1550680847, now seen corresponding path program 1 times [2022-03-03 17:51:30,383 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:30,383 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670969149] [2022-03-03 17:51:30,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:30,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:30,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:30,523 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:30,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670969149] [2022-03-03 17:51:30,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670969149] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:51:30,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752455652] [2022-03-03 17:51:30,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:30,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:30,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:51:30,525 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:51:30,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-03 17:51:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:30,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:51:30,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:51:31,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:31,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:51:31,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:31,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752455652] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:51:31,648 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:51:31,648 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:51:31,648 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99051465] [2022-03-03 17:51:31,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:51:31,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:51:31,648 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:31,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:51:31,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=995, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:51:31,649 INFO L87 Difference]: Start difference. First operand 621 states and 1567 transitions. Second operand has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:33,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:33,365 INFO L93 Difference]: Finished difference Result 1332 states and 3500 transitions. [2022-03-03 17:51:33,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-03 17:51:33,379 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:51:33,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:33,382 INFO L225 Difference]: With dead ends: 1332 [2022-03-03 17:51:33,382 INFO L226 Difference]: Without dead ends: 1257 [2022-03-03 17:51:33,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=766, Invalid=4636, Unknown=0, NotChecked=0, Total=5402 [2022-03-03 17:51:33,383 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 537 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:33,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 2574 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:51:33,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2022-03-03 17:51:33,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 809. [2022-03-03 17:51:33,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 808 states have (on average 2.573019801980198) internal successors, (2079), 808 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:33,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 2079 transitions. [2022-03-03 17:51:33,396 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 2079 transitions. Word has length 70 [2022-03-03 17:51:33,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:33,396 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 2079 transitions. [2022-03-03 17:51:33,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:33,397 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 2079 transitions. [2022-03-03 17:51:33,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:51:33,398 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:33,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:33,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-03 17:51:33,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-03-03 17:51:33,612 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:33,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:33,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1707982699, now seen corresponding path program 2 times [2022-03-03 17:51:33,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:33,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649897951] [2022-03-03 17:51:33,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:33,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:33,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:33,769 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:33,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649897951] [2022-03-03 17:51:33,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649897951] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:51:33,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693346004] [2022-03-03 17:51:33,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:51:33,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:33,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:51:33,770 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:51:33,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-03 17:51:33,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:51:33,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:51:33,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:51:33,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:51:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:34,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:51:34,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:34,806 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693346004] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:51:34,806 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:51:34,807 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:51:34,807 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387452642] [2022-03-03 17:51:34,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:51:34,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:51:34,808 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:34,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:51:34,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=992, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:51:34,809 INFO L87 Difference]: Start difference. First operand 809 states and 2079 transitions. Second operand has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:37,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:37,289 INFO L93 Difference]: Finished difference Result 1555 states and 4131 transitions. [2022-03-03 17:51:37,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-03 17:51:37,289 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:51:37,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:37,292 INFO L225 Difference]: With dead ends: 1555 [2022-03-03 17:51:37,292 INFO L226 Difference]: Without dead ends: 1480 [2022-03-03 17:51:37,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2481 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1151, Invalid=7039, Unknown=0, NotChecked=0, Total=8190 [2022-03-03 17:51:37,294 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 611 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 2758 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:37,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 2758 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:51:37,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2022-03-03 17:51:37,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 837. [2022-03-03 17:51:37,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 836 states have (on average 2.588516746411483) internal successors, (2164), 836 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:37,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 2164 transitions. [2022-03-03 17:51:37,310 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 2164 transitions. Word has length 70 [2022-03-03 17:51:37,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:37,310 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 2164 transitions. [2022-03-03 17:51:37,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:37,311 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 2164 transitions. [2022-03-03 17:51:37,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:51:37,312 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:37,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:37,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-03 17:51:37,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-03-03 17:51:37,528 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:37,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:37,528 INFO L85 PathProgramCache]: Analyzing trace with hash -4106897, now seen corresponding path program 3 times [2022-03-03 17:51:37,528 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:37,528 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063419539] [2022-03-03 17:51:37,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:37,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:37,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:37,673 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:37,673 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063419539] [2022-03-03 17:51:37,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063419539] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:51:37,673 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159777452] [2022-03-03 17:51:37,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:51:37,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:37,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:51:37,676 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:51:37,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-03 17:51:37,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:51:37,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:51:37,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:51:37,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:51:38,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:38,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:51:38,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:38,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159777452] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:51:38,670 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:51:38,670 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:51:38,671 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808023227] [2022-03-03 17:51:38,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:51:38,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:51:38,671 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:38,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:51:38,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:51:38,672 INFO L87 Difference]: Start difference. First operand 837 states and 2164 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:40,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:40,520 INFO L93 Difference]: Finished difference Result 1564 states and 4070 transitions. [2022-03-03 17:51:40,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-03 17:51:40,520 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:51:40,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:40,522 INFO L225 Difference]: With dead ends: 1564 [2022-03-03 17:51:40,522 INFO L226 Difference]: Without dead ends: 1438 [2022-03-03 17:51:40,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1901 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=915, Invalid=5727, Unknown=0, NotChecked=0, Total=6642 [2022-03-03 17:51:40,524 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 530 mSDsluCounter, 2685 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:40,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 2700 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:51:40,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2022-03-03 17:51:40,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 849. [2022-03-03 17:51:40,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 848 states have (on average 2.5908018867924527) internal successors, (2197), 848 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:40,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 2197 transitions. [2022-03-03 17:51:40,537 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 2197 transitions. Word has length 70 [2022-03-03 17:51:40,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:40,537 INFO L470 AbstractCegarLoop]: Abstraction has 849 states and 2197 transitions. [2022-03-03 17:51:40,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:40,537 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 2197 transitions. [2022-03-03 17:51:40,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:51:40,539 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:40,539 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] [2022-03-03 17:51:40,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-03 17:51:40,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:40,755 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:40,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:40,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1589077591, now seen corresponding path program 4 times [2022-03-03 17:51:40,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:40,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206854808] [2022-03-03 17:51:40,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:40,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:40,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:40,893 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:40,893 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206854808] [2022-03-03 17:51:40,893 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206854808] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:51:40,893 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522830777] [2022-03-03 17:51:40,893 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:51:40,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:40,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:51:40,894 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:51:40,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-03 17:51:40,965 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:51:40,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:51:40,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-03 17:51:40,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:51:41,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:41,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:51:41,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:41,735 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522830777] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:51:41,735 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:51:41,735 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2022-03-03 17:51:41,735 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561661292] [2022-03-03 17:51:41,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:51:41,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:51:41,736 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:41,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:51:41,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:51:41,737 INFO L87 Difference]: Start difference. First operand 849 states and 2197 transitions. Second operand has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:42,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:42,868 INFO L93 Difference]: Finished difference Result 1357 states and 3523 transitions. [2022-03-03 17:51:42,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-03 17:51:42,868 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:51:42,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:42,881 INFO L225 Difference]: With dead ends: 1357 [2022-03-03 17:51:42,881 INFO L226 Difference]: Without dead ends: 1287 [2022-03-03 17:51:42,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1446 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=829, Invalid=4573, Unknown=0, NotChecked=0, Total=5402 [2022-03-03 17:51:42,882 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 395 mSDsluCounter, 2463 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 2515 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:42,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 2515 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:51:42,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2022-03-03 17:51:42,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 929. [2022-03-03 17:51:42,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 928 states have (on average 2.6088362068965516) internal successors, (2421), 928 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:42,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 2421 transitions. [2022-03-03 17:51:42,900 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 2421 transitions. Word has length 70 [2022-03-03 17:51:42,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:42,900 INFO L470 AbstractCegarLoop]: Abstraction has 929 states and 2421 transitions. [2022-03-03 17:51:42,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:42,900 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 2421 transitions. [2022-03-03 17:51:42,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:51:42,902 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:42,902 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:42,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-03 17:51:43,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-03-03 17:51:43,118 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:43,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:43,119 INFO L85 PathProgramCache]: Analyzing trace with hash 742294319, now seen corresponding path program 5 times [2022-03-03 17:51:43,119 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:43,119 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618963780] [2022-03-03 17:51:43,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:43,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:43,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:43,258 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:43,258 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618963780] [2022-03-03 17:51:43,259 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618963780] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:51:43,259 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306392955] [2022-03-03 17:51:43,259 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:51:43,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:43,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:51:43,260 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:51:43,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-03 17:51:43,315 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:51:43,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:51:43,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 17:51:43,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:51:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:43,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:51:44,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:44,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306392955] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:51:44,040 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:51:44,040 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:51:44,040 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149930486] [2022-03-03 17:51:44,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:51:44,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:51:44,041 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:44,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:51:44,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:51:44,042 INFO L87 Difference]: Start difference. First operand 929 states and 2421 transitions. Second operand has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:45,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:45,285 INFO L93 Difference]: Finished difference Result 1578 states and 4174 transitions. [2022-03-03 17:51:45,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-03 17:51:45,285 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:51:45,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:45,289 INFO L225 Difference]: With dead ends: 1578 [2022-03-03 17:51:45,289 INFO L226 Difference]: Without dead ends: 1515 [2022-03-03 17:51:45,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1802 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1105, Invalid=5375, Unknown=0, NotChecked=0, Total=6480 [2022-03-03 17:51:45,291 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 788 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 2105 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:45,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [788 Valid, 2105 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:51:45,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2022-03-03 17:51:45,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 993. [2022-03-03 17:51:45,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 992 states have (on average 2.6461693548387095) internal successors, (2625), 992 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:45,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 2625 transitions. [2022-03-03 17:51:45,307 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 2625 transitions. Word has length 70 [2022-03-03 17:51:45,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:45,307 INFO L470 AbstractCegarLoop]: Abstraction has 993 states and 2625 transitions. [2022-03-03 17:51:45,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:45,307 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 2625 transitions. [2022-03-03 17:51:45,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:51:45,310 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:45,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:45,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-03-03 17:51:45,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-03-03 17:51:45,527 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:45,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:45,527 INFO L85 PathProgramCache]: Analyzing trace with hash -969795277, now seen corresponding path program 6 times [2022-03-03 17:51:45,527 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:45,527 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112972137] [2022-03-03 17:51:45,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:45,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:45,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:45,664 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:45,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112972137] [2022-03-03 17:51:45,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112972137] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:51:45,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653232258] [2022-03-03 17:51:45,665 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:51:45,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:45,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:51:45,666 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:51:45,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-03 17:51:45,718 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:51:45,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:51:45,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 17:51:45,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:51:46,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:46,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:51:46,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:46,463 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653232258] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:51:46,464 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:51:46,464 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:51:46,464 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146130410] [2022-03-03 17:51:46,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:51:46,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:51:46,464 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:46,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:51:46,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:51:46,465 INFO L87 Difference]: Start difference. First operand 993 states and 2625 transitions. Second operand has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:47,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:47,685 INFO L93 Difference]: Finished difference Result 1377 states and 3662 transitions. [2022-03-03 17:51:47,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-03 17:51:47,687 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:51:47,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:47,689 INFO L225 Difference]: With dead ends: 1377 [2022-03-03 17:51:47,689 INFO L226 Difference]: Without dead ends: 1310 [2022-03-03 17:51:47,690 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 [2022-03-03 17:51:47,691 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 616 mSDsluCounter, 2444 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 2462 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:47,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 2462 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:51:47,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2022-03-03 17:51:47,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 977. [2022-03-03 17:51:47,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 976 states have (on average 2.6403688524590163) internal successors, (2577), 976 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:47,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 2577 transitions. [2022-03-03 17:51:47,704 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 2577 transitions. Word has length 70 [2022-03-03 17:51:47,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:47,704 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 2577 transitions. [2022-03-03 17:51:47,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:47,704 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 2577 transitions. [2022-03-03 17:51:47,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:51:47,706 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:47,706 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:47,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-03 17:51:47,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-03-03 17:51:47,920 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:47,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:47,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1740201325, now seen corresponding path program 7 times [2022-03-03 17:51:47,921 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:47,921 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442106176] [2022-03-03 17:51:47,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:47,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:48,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:48,074 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:48,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442106176] [2022-03-03 17:51:48,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442106176] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:51:48,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166045594] [2022-03-03 17:51:48,074 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:51:48,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:48,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:51:48,081 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:51:48,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-03 17:51:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:48,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:51:48,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:51:48,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:48,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:51:48,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:48,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166045594] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:51:48,997 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:51:48,997 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:51:48,997 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325536977] [2022-03-03 17:51:48,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:51:48,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:51:48,997 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:48,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:51:48,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:51:48,998 INFO L87 Difference]: Start difference. First operand 977 states and 2577 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:51,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:51,672 INFO L93 Difference]: Finished difference Result 2171 states and 5825 transitions. [2022-03-03 17:51:51,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-03 17:51:51,672 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:51:51,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:51,676 INFO L225 Difference]: With dead ends: 2171 [2022-03-03 17:51:51,676 INFO L226 Difference]: Without dead ends: 2031 [2022-03-03 17:51:51,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3871 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1718, Invalid=9838, Unknown=0, NotChecked=0, Total=11556 [2022-03-03 17:51:51,679 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 775 mSDsluCounter, 2340 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 2390 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:51,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 2390 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:51:51,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2022-03-03 17:51:51,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 1013. [2022-03-03 17:51:51,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1012 states have (on average 2.66403162055336) internal successors, (2696), 1012 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:51,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 2696 transitions. [2022-03-03 17:51:51,697 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 2696 transitions. Word has length 70 [2022-03-03 17:51:51,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:51,697 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 2696 transitions. [2022-03-03 17:51:51,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:51,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 2696 transitions. [2022-03-03 17:51:51,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:51:51,699 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:51,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:51,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-03 17:51:51,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:51,907 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:51,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:51,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1996119831, now seen corresponding path program 8 times [2022-03-03 17:51:51,908 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:51,908 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861710523] [2022-03-03 17:51:51,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:51,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:52,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:52,054 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:52,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861710523] [2022-03-03 17:51:52,054 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861710523] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:51:52,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968770443] [2022-03-03 17:51:52,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:51:52,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:52,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:51:52,064 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:51:52,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-03 17:51:52,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:51:52,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:51:52,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:51:52,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:51:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:52,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:51:53,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:53,017 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968770443] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:51:53,017 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:51:53,017 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:51:53,017 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600708901] [2022-03-03 17:51:53,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:51:53,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:51:53,018 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:53,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:51:53,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:51:53,018 INFO L87 Difference]: Start difference. First operand 1013 states and 2696 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:55,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:55,606 INFO L93 Difference]: Finished difference Result 2201 states and 5933 transitions. [2022-03-03 17:51:55,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-03-03 17:51:55,606 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:51:55,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:55,611 INFO L225 Difference]: With dead ends: 2201 [2022-03-03 17:51:55,611 INFO L226 Difference]: Without dead ends: 2075 [2022-03-03 17:51:55,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3645 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1631, Invalid=9499, Unknown=0, NotChecked=0, Total=11130 [2022-03-03 17:51:55,613 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 768 mSDsluCounter, 2268 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:55,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 2313 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:51:55,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2022-03-03 17:51:55,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 1065. [2022-03-03 17:51:55,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1064 states have (on average 2.6907894736842106) internal successors, (2863), 1064 states have internal predecessors, (2863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:55,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 2863 transitions. [2022-03-03 17:51:55,630 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 2863 transitions. Word has length 70 [2022-03-03 17:51:55,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:55,630 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 2863 transitions. [2022-03-03 17:51:55,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:55,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 2863 transitions. [2022-03-03 17:51:55,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:51:55,632 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:55,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:55,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-03 17:51:55,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-03-03 17:51:55,839 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:55,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:55,840 INFO L85 PathProgramCache]: Analyzing trace with hash 713876771, now seen corresponding path program 9 times [2022-03-03 17:51:55,840 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:55,840 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513389235] [2022-03-03 17:51:55,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:55,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:55,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:55,974 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:55,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513389235] [2022-03-03 17:51:55,974 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513389235] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:51:55,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015424504] [2022-03-03 17:51:55,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:51:55,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:55,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:51:55,988 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:51:56,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-03 17:51:56,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:51:56,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:51:56,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:51:56,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:51:56,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:56,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:51:56,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:56,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015424504] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:51:56,917 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:51:56,917 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:51:56,917 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274966861] [2022-03-03 17:51:56,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:51:56,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:51:56,917 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:56,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:51:56,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:51:56,918 INFO L87 Difference]: Start difference. First operand 1065 states and 2863 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:59,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:59,633 INFO L93 Difference]: Finished difference Result 2153 states and 5838 transitions. [2022-03-03 17:51:59,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-03-03 17:51:59,633 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 [2022-03-03 17:51:59,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:59,637 INFO L225 Difference]: With dead ends: 2153 [2022-03-03 17:51:59,638 INFO L226 Difference]: Without dead ends: 2013 [2022-03-03 17:51:59,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3745 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1653, Invalid=9689, Unknown=0, NotChecked=0, Total=11342 [2022-03-03 17:51:59,639 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 652 mSDsluCounter, 2875 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 2860 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:59,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [652 Valid, 2860 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:51:59,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2022-03-03 17:51:59,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1065. [2022-03-03 17:51:59,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1064 states have (on average 2.68703007518797) internal successors, (2859), 1064 states have internal predecessors, (2859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:59,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 2859 transitions. [2022-03-03 17:51:59,657 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 2859 transitions. Word has length 70 [2022-03-03 17:51:59,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:59,657 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 2859 transitions. [2022-03-03 17:51:59,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:51:59,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 2859 transitions. [2022-03-03 17:51:59,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:51:59,659 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:59,659 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:51:59,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-03 17:51:59,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:59,888 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:59,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:59,888 INFO L85 PathProgramCache]: Analyzing trace with hash -572732175, now seen corresponding path program 10 times [2022-03-03 17:51:59,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:59,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144973499] [2022-03-03 17:51:59,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:59,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:00,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:00,039 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:00,039 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144973499] [2022-03-03 17:52:00,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144973499] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:52:00,039 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810235999] [2022-03-03 17:52:00,039 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:52:00,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:00,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:52:00,040 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:52:00,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-03 17:52:00,095 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:52:00,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:52:00,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-03 17:52:00,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:52:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:00,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:52:00,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:00,785 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810235999] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:52:00,785 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:52:00,785 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2022-03-03 17:52:00,785 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23381841] [2022-03-03 17:52:00,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:52:00,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:52:00,787 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:00,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:52:00,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=882, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:52:00,788 INFO L87 Difference]: Start difference. First operand 1065 states and 2859 transitions. Second operand has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:03,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:03,203 INFO L93 Difference]: Finished difference Result 2793 states and 7571 transitions. [2022-03-03 17:52:03,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-03 17:52:03,203 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:52:03,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:03,208 INFO L225 Difference]: With dead ends: 2793 [2022-03-03 17:52:03,209 INFO L226 Difference]: Without dead ends: 2661 [2022-03-03 17:52:03,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4054 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1760, Invalid=10672, Unknown=0, NotChecked=0, Total=12432 [2022-03-03 17:52:03,210 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 861 mSDsluCounter, 3410 mSDsCounter, 0 mSdLazyCounter, 1788 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 3430 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:03,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [861 Valid, 3430 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1788 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:52:03,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2661 states. [2022-03-03 17:52:03,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2661 to 1416. [2022-03-03 17:52:03,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 2.8141342756183745) internal successors, (3982), 1415 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:03,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 3982 transitions. [2022-03-03 17:52:03,236 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 3982 transitions. Word has length 70 [2022-03-03 17:52:03,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:03,238 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 3982 transitions. [2022-03-03 17:52:03,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:03,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 3982 transitions. [2022-03-03 17:52:03,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:52:03,240 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:03,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:03,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-03 17:52:03,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-03-03 17:52:03,455 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:03,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:03,456 INFO L85 PathProgramCache]: Analyzing trace with hash -340166747, now seen corresponding path program 11 times [2022-03-03 17:52:03,456 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:03,456 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12615035] [2022-03-03 17:52:03,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:03,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:03,587 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:03,587 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12615035] [2022-03-03 17:52:03,587 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12615035] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:52:03,587 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937989849] [2022-03-03 17:52:03,587 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:52:03,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:03,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:52:03,588 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:52:03,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-03 17:52:03,638 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:52:03,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:52:03,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:52:03,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:52:03,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:03,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:52:04,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:04,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937989849] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:52:04,448 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:52:04,448 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:52:04,448 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675938038] [2022-03-03 17:52:04,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:52:04,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:52:04,449 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:04,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:52:04,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:52:04,449 INFO L87 Difference]: Start difference. First operand 1416 states and 3982 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:06,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:06,679 INFO L93 Difference]: Finished difference Result 2895 states and 8029 transitions. [2022-03-03 17:52:06,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-03 17:52:06,680 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:52:06,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:06,685 INFO L225 Difference]: With dead ends: 2895 [2022-03-03 17:52:06,685 INFO L226 Difference]: Without dead ends: 2769 [2022-03-03 17:52:06,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2406 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1033, Invalid=7157, Unknown=0, NotChecked=0, Total=8190 [2022-03-03 17:52:06,686 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 545 mSDsluCounter, 3108 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 3108 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:06,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 3108 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:52:06,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2022-03-03 17:52:06,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 1444. [2022-03-03 17:52:06,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 2.8184338184338182) internal successors, (4067), 1443 states have internal predecessors, (4067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:06,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 4067 transitions. [2022-03-03 17:52:06,711 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 4067 transitions. Word has length 70 [2022-03-03 17:52:06,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:06,711 INFO L470 AbstractCegarLoop]: Abstraction has 1444 states and 4067 transitions. [2022-03-03 17:52:06,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:06,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 4067 transitions. [2022-03-03 17:52:06,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:52:06,713 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:06,713 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:06,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-03 17:52:06,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-03-03 17:52:06,930 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:06,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:06,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1925137441, now seen corresponding path program 12 times [2022-03-03 17:52:06,930 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:06,930 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096991369] [2022-03-03 17:52:06,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:06,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:07,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:07,082 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:07,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096991369] [2022-03-03 17:52:07,082 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096991369] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:52:07,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319273203] [2022-03-03 17:52:07,082 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:52:07,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:07,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:52:07,083 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:52:07,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-03 17:52:07,148 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:52:07,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:52:07,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:52:07,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:52:07,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:07,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:52:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:07,981 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319273203] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:52:07,981 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:52:07,981 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:52:07,981 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964824632] [2022-03-03 17:52:07,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:52:07,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:52:07,981 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:07,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:52:07,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:52:07,982 INFO L87 Difference]: Start difference. First operand 1444 states and 4067 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:10,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:10,190 INFO L93 Difference]: Finished difference Result 2847 states and 7934 transitions. [2022-03-03 17:52:10,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-03 17:52:10,190 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:52:10,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:10,194 INFO L225 Difference]: With dead ends: 2847 [2022-03-03 17:52:10,194 INFO L226 Difference]: Without dead ends: 2707 [2022-03-03 17:52:10,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2499 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1060, Invalid=7312, Unknown=0, NotChecked=0, Total=8372 [2022-03-03 17:52:10,195 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 532 mSDsluCounter, 2915 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 2904 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:10,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 2904 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:52:10,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2707 states. [2022-03-03 17:52:10,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2707 to 1436. [2022-03-03 17:52:10,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 2.81602787456446) internal successors, (4041), 1435 states have internal predecessors, (4041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:10,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 4041 transitions. [2022-03-03 17:52:10,219 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 4041 transitions. Word has length 70 [2022-03-03 17:52:10,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:10,219 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 4041 transitions. [2022-03-03 17:52:10,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:10,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 4041 transitions. [2022-03-03 17:52:10,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:52:10,221 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:10,221 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:10,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-03 17:52:10,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-03-03 17:52:10,422 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:10,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:10,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1083220909, now seen corresponding path program 13 times [2022-03-03 17:52:10,422 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:10,422 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843755234] [2022-03-03 17:52:10,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:10,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:10,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:10,561 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:10,561 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843755234] [2022-03-03 17:52:10,561 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843755234] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:52:10,561 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331114802] [2022-03-03 17:52:10,561 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:52:10,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:10,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:52:10,563 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:52:10,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-03 17:52:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:10,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:52:10,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:52:10,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:10,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:52:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:11,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331114802] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:52:11,473 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:52:11,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:52:11,474 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117325054] [2022-03-03 17:52:11,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:52:11,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:52:11,474 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:11,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:52:11,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=994, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:52:11,474 INFO L87 Difference]: Start difference. First operand 1436 states and 4041 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:14,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:14,818 INFO L93 Difference]: Finished difference Result 3158 states and 8754 transitions. [2022-03-03 17:52:14,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-03-03 17:52:14,818 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:52:14,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:14,823 INFO L225 Difference]: With dead ends: 3158 [2022-03-03 17:52:14,823 INFO L226 Difference]: Without dead ends: 3026 [2022-03-03 17:52:14,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4898 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1851, Invalid=12669, Unknown=0, NotChecked=0, Total=14520 [2022-03-03 17:52:14,824 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 749 mSDsluCounter, 2686 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:14,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 2713 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:52:14,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2022-03-03 17:52:14,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 1504. [2022-03-03 17:52:14,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1503 states have (on average 2.821024617431803) internal successors, (4240), 1503 states have internal predecessors, (4240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:14,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 4240 transitions. [2022-03-03 17:52:14,862 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 4240 transitions. Word has length 70 [2022-03-03 17:52:14,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:14,862 INFO L470 AbstractCegarLoop]: Abstraction has 1504 states and 4240 transitions. [2022-03-03 17:52:14,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:14,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 4240 transitions. [2022-03-03 17:52:14,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:52:14,864 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:14,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:14,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-03 17:52:15,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-03-03 17:52:15,081 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:15,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:15,081 INFO L85 PathProgramCache]: Analyzing trace with hash -295820047, now seen corresponding path program 14 times [2022-03-03 17:52:15,081 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:15,081 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551966082] [2022-03-03 17:52:15,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:15,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:15,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:15,209 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:15,210 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551966082] [2022-03-03 17:52:15,210 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551966082] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:52:15,210 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382140814] [2022-03-03 17:52:15,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:52:15,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:15,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:52:15,211 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:52:15,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-03 17:52:15,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:52:15,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:52:15,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:52:15,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:52:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:15,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:52:16,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:16,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382140814] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:52:16,058 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:52:16,058 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:52:16,058 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580463677] [2022-03-03 17:52:16,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:52:16,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:52:16,058 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:16,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:52:16,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:52:16,059 INFO L87 Difference]: Start difference. First operand 1504 states and 4240 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:18,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:18,399 INFO L93 Difference]: Finished difference Result 2838 states and 7871 transitions. [2022-03-03 17:52:18,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-03 17:52:18,400 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:52:18,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:18,404 INFO L225 Difference]: With dead ends: 2838 [2022-03-03 17:52:18,404 INFO L226 Difference]: Without dead ends: 2706 [2022-03-03 17:52:18,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2679 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1071, Invalid=7859, Unknown=0, NotChecked=0, Total=8930 [2022-03-03 17:52:18,405 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 522 mSDsluCounter, 3567 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 3518 SdHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:18,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 3518 Invalid, 1558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:52:18,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2022-03-03 17:52:18,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 1519. [2022-03-03 17:52:18,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1518 states have (on average 2.816205533596838) internal successors, (4275), 1518 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 4275 transitions. [2022-03-03 17:52:18,438 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 4275 transitions. Word has length 70 [2022-03-03 17:52:18,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:18,438 INFO L470 AbstractCegarLoop]: Abstraction has 1519 states and 4275 transitions. [2022-03-03 17:52:18,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:18,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 4275 transitions. [2022-03-03 17:52:18,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:52:18,440 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:18,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:18,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-03 17:52:18,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:18,641 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:18,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:18,641 INFO L85 PathProgramCache]: Analyzing trace with hash 146329989, now seen corresponding path program 15 times [2022-03-03 17:52:18,642 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:18,642 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558062415] [2022-03-03 17:52:18,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:18,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:18,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:18,783 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:18,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558062415] [2022-03-03 17:52:18,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558062415] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:52:18,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266902535] [2022-03-03 17:52:18,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:52:18,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:18,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:52:18,784 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:52:18,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-03 17:52:18,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:52:18,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:52:18,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:52:18,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:52:19,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:19,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:52:19,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:19,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266902535] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:52:19,702 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:52:19,702 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:52:19,703 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143587210] [2022-03-03 17:52:19,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:52:19,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:52:19,703 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:19,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:52:19,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=984, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:52:19,703 INFO L87 Difference]: Start difference. First operand 1519 states and 4275 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:23,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:23,248 INFO L93 Difference]: Finished difference Result 3305 states and 9252 transitions. [2022-03-03 17:52:23,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-03-03 17:52:23,248 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:52:23,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:23,254 INFO L225 Difference]: With dead ends: 3305 [2022-03-03 17:52:23,254 INFO L226 Difference]: Without dead ends: 3179 [2022-03-03 17:52:23,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5564 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2275, Invalid=13475, Unknown=0, NotChecked=0, Total=15750 [2022-03-03 17:52:23,255 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 816 mSDsluCounter, 2945 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 2964 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:23,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 2964 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:52:23,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2022-03-03 17:52:23,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 1615. [2022-03-03 17:52:23,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1614 states have (on average 2.8469640644361833) internal successors, (4595), 1614 states have internal predecessors, (4595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:23,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 4595 transitions. [2022-03-03 17:52:23,283 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 4595 transitions. Word has length 70 [2022-03-03 17:52:23,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:23,283 INFO L470 AbstractCegarLoop]: Abstraction has 1615 states and 4595 transitions. [2022-03-03 17:52:23,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:23,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 4595 transitions. [2022-03-03 17:52:23,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:52:23,285 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:23,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:23,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-03 17:52:23,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-03-03 17:52:23,502 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:23,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:23,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1438640705, now seen corresponding path program 16 times [2022-03-03 17:52:23,502 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:23,502 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305307379] [2022-03-03 17:52:23,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:23,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:23,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:23,642 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:23,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305307379] [2022-03-03 17:52:23,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305307379] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:52:23,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531267041] [2022-03-03 17:52:23,642 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:52:23,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:23,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:52:23,643 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:52:23,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-03 17:52:23,696 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:52:23,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:52:23,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 17:52:23,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:52:24,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:24,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:52:24,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:24,409 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531267041] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:52:24,409 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:52:24,409 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:52:24,409 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786286110] [2022-03-03 17:52:24,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:52:24,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:52:24,409 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:24,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:52:24,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:52:24,410 INFO L87 Difference]: Start difference. First operand 1615 states and 4595 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:26,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:26,525 INFO L93 Difference]: Finished difference Result 3390 states and 9672 transitions. [2022-03-03 17:52:26,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-03-03 17:52:26,525 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:52:26,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:26,530 INFO L225 Difference]: With dead ends: 3390 [2022-03-03 17:52:26,530 INFO L226 Difference]: Without dead ends: 3213 [2022-03-03 17:52:26,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4151 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1687, Invalid=10745, Unknown=0, NotChecked=0, Total=12432 [2022-03-03 17:52:26,531 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 635 mSDsluCounter, 3408 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 3407 SdHoareTripleChecker+Invalid, 2018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:26,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 3407 Invalid, 2018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1894 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:52:26,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3213 states. [2022-03-03 17:52:26,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3213 to 1683. [2022-03-03 17:52:26,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 2.859690844233056) internal successors, (4810), 1682 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:26,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 4810 transitions. [2022-03-03 17:52:26,558 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 4810 transitions. Word has length 70 [2022-03-03 17:52:26,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:26,558 INFO L470 AbstractCegarLoop]: Abstraction has 1683 states and 4810 transitions. [2022-03-03 17:52:26,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:26,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 4810 transitions. [2022-03-03 17:52:26,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:52:26,561 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:26,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:26,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-03 17:52:26,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-03-03 17:52:26,767 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:26,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:26,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1845975855, now seen corresponding path program 17 times [2022-03-03 17:52:26,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:26,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645731701] [2022-03-03 17:52:26,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:26,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:26,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:26,977 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:26,977 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645731701] [2022-03-03 17:52:26,977 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645731701] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:52:26,977 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216941216] [2022-03-03 17:52:26,978 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:52:26,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:26,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:52:26,979 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:52:26,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-03 17:52:27,036 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:52:27,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:52:27,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 17:52:27,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:52:27,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:27,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:52:27,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:27,706 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216941216] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:52:27,706 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:52:27,706 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:52:27,706 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403927678] [2022-03-03 17:52:27,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:52:27,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:52:27,707 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:27,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:52:27,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=934, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:52:27,707 INFO L87 Difference]: Start difference. First operand 1683 states and 4810 transitions. Second operand has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:29,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:29,116 INFO L93 Difference]: Finished difference Result 2439 states and 6867 transitions. [2022-03-03 17:52:29,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-03 17:52:29,116 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:52:29,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:29,120 INFO L225 Difference]: With dead ends: 2439 [2022-03-03 17:52:29,120 INFO L226 Difference]: Without dead ends: 2376 [2022-03-03 17:52:29,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2331 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1318, Invalid=6872, Unknown=0, NotChecked=0, Total=8190 [2022-03-03 17:52:29,122 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 698 mSDsluCounter, 2566 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 2596 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:29,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [698 Valid, 2596 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:52:29,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2022-03-03 17:52:29,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 1763. [2022-03-03 17:52:29,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 2.8819523269012484) internal successors, (5078), 1762 states have internal predecessors, (5078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:29,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 5078 transitions. [2022-03-03 17:52:29,146 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 5078 transitions. Word has length 70 [2022-03-03 17:52:29,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:29,148 INFO L470 AbstractCegarLoop]: Abstraction has 1763 states and 5078 transitions. [2022-03-03 17:52:29,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:29,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 5078 transitions. [2022-03-03 17:52:29,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:52:29,151 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:29,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:29,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-03 17:52:29,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-03-03 17:52:29,367 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:29,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:29,367 INFO L85 PathProgramCache]: Analyzing trace with hash 133886259, now seen corresponding path program 18 times [2022-03-03 17:52:29,368 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:29,368 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473296627] [2022-03-03 17:52:29,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:29,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:29,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:29,513 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:29,513 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473296627] [2022-03-03 17:52:29,514 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473296627] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:52:29,514 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469814566] [2022-03-03 17:52:29,514 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:52:29,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:29,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:52:29,515 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:52:29,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-03 17:52:29,579 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:52:29,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:52:29,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 17:52:29,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:52:29,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:29,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:52:30,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:30,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469814566] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:52:30,262 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:52:30,262 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:52:30,262 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434146818] [2022-03-03 17:52:30,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:52:30,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:52:30,263 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:30,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:52:30,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:52:30,263 INFO L87 Difference]: Start difference. First operand 1763 states and 5078 transitions. Second operand has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:31,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:31,562 INFO L93 Difference]: Finished difference Result 2219 states and 6317 transitions. [2022-03-03 17:52:31,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-03 17:52:31,562 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:52:31,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:31,566 INFO L225 Difference]: With dead ends: 2219 [2022-03-03 17:52:31,566 INFO L226 Difference]: Without dead ends: 2152 [2022-03-03 17:52:31,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2127 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1233, Invalid=6423, Unknown=0, NotChecked=0, Total=7656 [2022-03-03 17:52:31,567 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 611 mSDsluCounter, 2424 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:31,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 2444 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:52:31,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2022-03-03 17:52:31,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 1683. [2022-03-03 17:52:31,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 2.8620689655172415) internal successors, (4814), 1682 states have internal predecessors, (4814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:31,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 4814 transitions. [2022-03-03 17:52:31,603 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 4814 transitions. Word has length 70 [2022-03-03 17:52:31,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:31,603 INFO L470 AbstractCegarLoop]: Abstraction has 1683 states and 4814 transitions. [2022-03-03 17:52:31,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:31,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 4814 transitions. [2022-03-03 17:52:31,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:52:31,606 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:31,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:31,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-03-03 17:52:31,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:31,810 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:31,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:31,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1885871487, now seen corresponding path program 19 times [2022-03-03 17:52:31,810 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:31,810 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808336488] [2022-03-03 17:52:31,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:31,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:31,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:31,939 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:31,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808336488] [2022-03-03 17:52:31,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808336488] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:52:31,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559927644] [2022-03-03 17:52:31,939 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:52:31,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:31,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:52:31,941 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:52:31,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-03 17:52:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:32,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:52:32,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:52:32,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:32,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:52:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:32,843 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559927644] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:52:32,843 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:52:32,843 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:52:32,844 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008540349] [2022-03-03 17:52:32,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:52:32,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:52:32,844 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:32,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:52:32,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:52:32,845 INFO L87 Difference]: Start difference. First operand 1683 states and 4814 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:35,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:35,944 INFO L93 Difference]: Finished difference Result 3486 states and 9856 transitions. [2022-03-03 17:52:35,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-03-03 17:52:35,944 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:52:35,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:35,949 INFO L225 Difference]: With dead ends: 3486 [2022-03-03 17:52:35,949 INFO L226 Difference]: Without dead ends: 3360 [2022-03-03 17:52:35,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4418 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1812, Invalid=11298, Unknown=0, NotChecked=0, Total=13110 [2022-03-03 17:52:35,950 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 680 mSDsluCounter, 2512 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:35,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 2543 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:52:35,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3360 states. [2022-03-03 17:52:35,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3360 to 1795. [2022-03-03 17:52:35,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 2.881828316610925) internal successors, (5170), 1794 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:35,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 5170 transitions. [2022-03-03 17:52:35,979 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 5170 transitions. Word has length 70 [2022-03-03 17:52:35,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:35,979 INFO L470 AbstractCegarLoop]: Abstraction has 1795 states and 5170 transitions. [2022-03-03 17:52:35,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:35,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 5170 transitions. [2022-03-03 17:52:35,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:52:35,982 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:35,982 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:36,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-03 17:52:36,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:36,182 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:36,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:36,183 INFO L85 PathProgramCache]: Analyzing trace with hash 300900793, now seen corresponding path program 20 times [2022-03-03 17:52:36,183 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:36,183 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556651591] [2022-03-03 17:52:36,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:36,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:36,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:36,328 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:36,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556651591] [2022-03-03 17:52:36,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556651591] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:52:36,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090173786] [2022-03-03 17:52:36,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:52:36,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:36,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:52:36,330 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:52:36,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-03 17:52:36,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:52:36,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:52:36,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:52:36,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:52:36,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:36,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:52:37,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:37,200 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090173786] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:52:37,201 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:52:37,201 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:52:37,201 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282890953] [2022-03-03 17:52:37,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:52:37,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:52:37,201 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:37,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:52:37,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:52:37,201 INFO L87 Difference]: Start difference. First operand 1795 states and 5170 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:40,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:40,293 INFO L93 Difference]: Finished difference Result 3422 states and 9717 transitions. [2022-03-03 17:52:40,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-03-03 17:52:40,293 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:52:40,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:40,298 INFO L225 Difference]: With dead ends: 3422 [2022-03-03 17:52:40,298 INFO L226 Difference]: Without dead ends: 3282 [2022-03-03 17:52:40,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4527 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1850, Invalid=11490, Unknown=0, NotChecked=0, Total=13340 [2022-03-03 17:52:40,300 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 718 mSDsluCounter, 2374 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 2419 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:40,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [718 Valid, 2419 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:52:40,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3282 states. [2022-03-03 17:52:40,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3282 to 1787. [2022-03-03 17:52:40,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1787 states, 1786 states have (on average 2.875699888017917) internal successors, (5136), 1786 states have internal predecessors, (5136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:40,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1787 states to 1787 states and 5136 transitions. [2022-03-03 17:52:40,340 INFO L78 Accepts]: Start accepts. Automaton has 1787 states and 5136 transitions. Word has length 70 [2022-03-03 17:52:40,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:40,341 INFO L470 AbstractCegarLoop]: Abstraction has 1787 states and 5136 transitions. [2022-03-03 17:52:40,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:40,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1787 states and 5136 transitions. [2022-03-03 17:52:40,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:52:40,344 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:40,344 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:40,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-03 17:52:40,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-03-03 17:52:40,559 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:40,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:40,560 INFO L85 PathProgramCache]: Analyzing trace with hash -985708153, now seen corresponding path program 21 times [2022-03-03 17:52:40,560 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:40,560 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631389430] [2022-03-03 17:52:40,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:40,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:40,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:40,709 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:40,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631389430] [2022-03-03 17:52:40,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631389430] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:52:40,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240512261] [2022-03-03 17:52:40,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:52:40,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:40,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:52:40,710 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:52:40,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-03 17:52:40,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:52:40,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:52:40,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:52:40,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:52:41,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:41,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:52:41,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:41,592 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240512261] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:52:41,592 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:52:41,592 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:52:41,592 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735236933] [2022-03-03 17:52:41,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:52:41,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:52:41,593 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:41,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:52:41,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:52:41,593 INFO L87 Difference]: Start difference. First operand 1787 states and 5136 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:45,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:45,717 INFO L93 Difference]: Finished difference Result 3648 states and 10326 transitions. [2022-03-03 17:52:45,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-03-03 17:52:45,717 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:52:45,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:45,723 INFO L225 Difference]: With dead ends: 3648 [2022-03-03 17:52:45,723 INFO L226 Difference]: Without dead ends: 3516 [2022-03-03 17:52:45,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6642 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2527, Invalid=15833, Unknown=0, NotChecked=0, Total=18360 [2022-03-03 17:52:45,724 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 824 mSDsluCounter, 2769 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:45,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 2785 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:52:45,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3516 states. [2022-03-03 17:52:45,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3516 to 1755. [2022-03-03 17:52:45,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1754 states have (on average 2.877993158494869) internal successors, (5048), 1754 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:45,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 5048 transitions. [2022-03-03 17:52:45,750 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 5048 transitions. Word has length 70 [2022-03-03 17:52:45,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:45,751 INFO L470 AbstractCegarLoop]: Abstraction has 1755 states and 5048 transitions. [2022-03-03 17:52:45,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:45,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 5048 transitions. [2022-03-03 17:52:45,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:52:45,753 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:45,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:45,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-03 17:52:45,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:45,954 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:45,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:45,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1930218187, now seen corresponding path program 22 times [2022-03-03 17:52:45,954 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:45,954 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365935688] [2022-03-03 17:52:45,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:45,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:46,094 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:46,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365935688] [2022-03-03 17:52:46,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365935688] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:52:46,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591505283] [2022-03-03 17:52:46,094 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:52:46,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:46,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:52:46,095 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:52:46,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-03 17:52:46,151 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:52:46,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:52:46,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 17:52:46,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:52:46,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:46,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:52:46,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:46,820 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591505283] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:52:46,821 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:52:46,821 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:52:46,821 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236844822] [2022-03-03 17:52:46,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:52:46,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:52:46,821 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:46,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:52:46,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:52:46,821 INFO L87 Difference]: Start difference. First operand 1755 states and 5048 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:48,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:48,415 INFO L93 Difference]: Finished difference Result 2948 states and 8269 transitions. [2022-03-03 17:52:48,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-03 17:52:48,415 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:52:48,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:48,419 INFO L225 Difference]: With dead ends: 2948 [2022-03-03 17:52:48,419 INFO L226 Difference]: Without dead ends: 2837 [2022-03-03 17:52:48,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2690 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1221, Invalid=7335, Unknown=0, NotChecked=0, Total=8556 [2022-03-03 17:52:48,420 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 522 mSDsluCounter, 3252 mSDsCounter, 0 mSdLazyCounter, 1513 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 3237 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:48,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 3237 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1513 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:52:48,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2837 states. [2022-03-03 17:52:48,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2837 to 1811. [2022-03-03 17:52:48,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1810 states have (on average 2.887292817679558) internal successors, (5226), 1810 states have internal predecessors, (5226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:48,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 5226 transitions. [2022-03-03 17:52:48,446 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 5226 transitions. Word has length 70 [2022-03-03 17:52:48,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:48,446 INFO L470 AbstractCegarLoop]: Abstraction has 1811 states and 5226 transitions. [2022-03-03 17:52:48,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:48,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 5226 transitions. [2022-03-03 17:52:48,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:52:48,449 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:48,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:48,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-03 17:52:48,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:48,668 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:48,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:48,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1922599073, now seen corresponding path program 23 times [2022-03-03 17:52:48,668 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:48,668 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787579155] [2022-03-03 17:52:48,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:48,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:48,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:48,789 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:48,790 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787579155] [2022-03-03 17:52:48,790 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787579155] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:52:48,790 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99993311] [2022-03-03 17:52:48,790 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:52:48,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:48,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:52:48,791 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:52:48,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-03 17:52:48,882 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:52:48,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:52:48,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 17:52:48,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:52:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:49,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:52:49,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:49,515 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99993311] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:52:49,515 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:52:49,515 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:52:49,515 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591925442] [2022-03-03 17:52:49,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:52:49,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:52:49,516 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:49,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:52:49,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:52:49,516 INFO L87 Difference]: Start difference. First operand 1811 states and 5226 transitions. Second operand has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:50,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:50,586 INFO L93 Difference]: Finished difference Result 2448 states and 6998 transitions. [2022-03-03 17:52:50,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-03 17:52:50,587 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:52:50,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:50,590 INFO L225 Difference]: With dead ends: 2448 [2022-03-03 17:52:50,590 INFO L226 Difference]: Without dead ends: 2385 [2022-03-03 17:52:50,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1639 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=968, Invalid=5038, Unknown=0, NotChecked=0, Total=6006 [2022-03-03 17:52:50,591 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 827 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:50,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 2085 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:52:50,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2022-03-03 17:52:50,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 1935. [2022-03-03 17:52:50,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1935 states, 1934 states have (on average 2.892967942088935) internal successors, (5595), 1934 states have internal predecessors, (5595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:50,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 5595 transitions. [2022-03-03 17:52:50,615 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 5595 transitions. Word has length 70 [2022-03-03 17:52:50,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:50,616 INFO L470 AbstractCegarLoop]: Abstraction has 1935 states and 5595 transitions. [2022-03-03 17:52:50,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:50,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 5595 transitions. [2022-03-03 17:52:50,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:52:50,618 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:50,618 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:50,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-03 17:52:50,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:50,836 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:50,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:50,836 INFO L85 PathProgramCache]: Analyzing trace with hash 787397529, now seen corresponding path program 24 times [2022-03-03 17:52:50,836 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:50,836 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231018079] [2022-03-03 17:52:50,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:50,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:50,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:50,980 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:50,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231018079] [2022-03-03 17:52:50,980 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231018079] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:52:50,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791392024] [2022-03-03 17:52:50,980 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:52:50,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:50,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:52:50,981 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:52:50,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-03 17:52:51,041 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:52:51,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:52:51,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:52:51,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:52:51,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:51,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:52:51,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:51,834 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791392024] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:52:51,834 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:52:51,834 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:52:51,834 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234149769] [2022-03-03 17:52:51,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:52:51,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:52:51,834 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:51,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:52:51,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=977, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:52:51,835 INFO L87 Difference]: Start difference. First operand 1935 states and 5595 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:55,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:55,684 INFO L93 Difference]: Finished difference Result 4151 states and 11923 transitions. [2022-03-03 17:52:55,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-03-03 17:52:55,684 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:52:55,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:55,690 INFO L225 Difference]: With dead ends: 4151 [2022-03-03 17:52:55,690 INFO L226 Difference]: Without dead ends: 4011 [2022-03-03 17:52:55,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6756 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2828, Invalid=15262, Unknown=0, NotChecked=0, Total=18090 [2022-03-03 17:52:55,691 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 829 mSDsluCounter, 2576 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:55,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [829 Valid, 2587 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:52:55,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4011 states. [2022-03-03 17:52:55,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4011 to 2051. [2022-03-03 17:52:55,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2051 states, 2050 states have (on average 2.937560975609756) internal successors, (6022), 2050 states have internal predecessors, (6022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:55,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 6022 transitions. [2022-03-03 17:52:55,723 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 6022 transitions. Word has length 70 [2022-03-03 17:52:55,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:55,723 INFO L470 AbstractCegarLoop]: Abstraction has 2051 states and 6022 transitions. [2022-03-03 17:52:55,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:52:55,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 6022 transitions. [2022-03-03 17:52:55,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:52:55,726 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:55,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:52:55,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-03-03 17:52:55,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:55,927 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:55,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:55,927 INFO L85 PathProgramCache]: Analyzing trace with hash -499211417, now seen corresponding path program 25 times [2022-03-03 17:52:55,928 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:55,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723050214] [2022-03-03 17:52:55,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:55,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:56,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:56,070 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:56,070 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723050214] [2022-03-03 17:52:56,070 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723050214] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:52:56,070 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284387827] [2022-03-03 17:52:56,070 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:52:56,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:56,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:52:56,071 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:52:56,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-03 17:52:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:56,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:52:56,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:52:56,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:56,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:52:56,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:56,913 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284387827] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:52:56,913 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:52:56,913 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:52:56,913 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674690790] [2022-03-03 17:52:56,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:52:56,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:52:56,914 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:56,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:52:56,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:52:56,914 INFO L87 Difference]: Start difference. First operand 2051 states and 6022 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:01,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:01,931 INFO L93 Difference]: Finished difference Result 4543 states and 12903 transitions. [2022-03-03 17:53:01,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-03-03 17:53:01,931 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:53:01,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:01,938 INFO L225 Difference]: With dead ends: 4543 [2022-03-03 17:53:01,938 INFO L226 Difference]: Without dead ends: 4411 [2022-03-03 17:53:01,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10013 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=3803, Invalid=21637, Unknown=0, NotChecked=0, Total=25440 [2022-03-03 17:53:01,942 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 1092 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 2719 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:01,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1092 Valid, 2719 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:53:01,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4411 states. [2022-03-03 17:53:01,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4411 to 1943. [2022-03-03 17:53:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1943 states, 1942 states have (on average 2.915036045314109) internal successors, (5661), 1942 states have internal predecessors, (5661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:01,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 5661 transitions. [2022-03-03 17:53:01,974 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 5661 transitions. Word has length 70 [2022-03-03 17:53:01,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:01,974 INFO L470 AbstractCegarLoop]: Abstraction has 1943 states and 5661 transitions. [2022-03-03 17:53:01,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:01,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 5661 transitions. [2022-03-03 17:53:01,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:53:01,977 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:01,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:01,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-03 17:53:02,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-03-03 17:53:02,182 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:02,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:02,182 INFO L85 PathProgramCache]: Analyzing trace with hash -222953207, now seen corresponding path program 26 times [2022-03-03 17:53:02,182 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:02,182 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850835021] [2022-03-03 17:53:02,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:02,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:02,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:02,321 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:02,322 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850835021] [2022-03-03 17:53:02,322 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850835021] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:53:02,322 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566316856] [2022-03-03 17:53:02,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:53:02,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:53:02,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:53:02,323 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:53:02,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-03 17:53:02,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:53:02,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:53:02,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:53:02,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:53:02,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:02,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:53:03,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:03,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566316856] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:53:03,244 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:53:03,244 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:53:03,244 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726168965] [2022-03-03 17:53:03,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:53:03,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:53:03,245 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:03,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:53:03,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:53:03,245 INFO L87 Difference]: Start difference. First operand 1943 states and 5661 transitions. Second operand has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:07,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:07,508 INFO L93 Difference]: Finished difference Result 4168 states and 12047 transitions. [2022-03-03 17:53:07,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-03-03 17:53:07,508 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:53:07,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:07,515 INFO L225 Difference]: With dead ends: 4168 [2022-03-03 17:53:07,515 INFO L226 Difference]: Without dead ends: 4093 [2022-03-03 17:53:07,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7903 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=3498, Invalid=17672, Unknown=0, NotChecked=0, Total=21170 [2022-03-03 17:53:07,516 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 1224 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 2351 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:07,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1224 Valid, 2351 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:53:07,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4093 states. [2022-03-03 17:53:07,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4093 to 2171. [2022-03-03 17:53:07,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2171 states, 2170 states have (on average 2.9419354838709677) internal successors, (6384), 2170 states have internal predecessors, (6384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:07,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2171 states to 2171 states and 6384 transitions. [2022-03-03 17:53:07,551 INFO L78 Accepts]: Start accepts. Automaton has 2171 states and 6384 transitions. Word has length 70 [2022-03-03 17:53:07,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:07,551 INFO L470 AbstractCegarLoop]: Abstraction has 2171 states and 6384 transitions. [2022-03-03 17:53:07,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:07,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2171 states and 6384 transitions. [2022-03-03 17:53:07,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:53:07,554 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:07,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:07,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-03 17:53:07,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-03-03 17:53:07,755 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:07,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:07,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1935042803, now seen corresponding path program 27 times [2022-03-03 17:53:07,755 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:07,755 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358255199] [2022-03-03 17:53:07,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:07,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:07,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:07,904 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:07,904 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358255199] [2022-03-03 17:53:07,904 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358255199] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:53:07,904 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532767307] [2022-03-03 17:53:07,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:53:07,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:53:07,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:53:07,905 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:53:07,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-03 17:53:07,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:53:07,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:53:07,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:53:07,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:53:08,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:08,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:53:08,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:08,874 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532767307] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:53:08,874 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:53:08,874 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:53:08,874 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608584940] [2022-03-03 17:53:08,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:53:08,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:53:08,874 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:08,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:53:08,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:53:08,875 INFO L87 Difference]: Start difference. First operand 2171 states and 6384 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:12,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:12,826 INFO L93 Difference]: Finished difference Result 4061 states and 11706 transitions. [2022-03-03 17:53:12,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-03-03 17:53:12,826 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:53:12,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:12,832 INFO L225 Difference]: With dead ends: 4061 [2022-03-03 17:53:12,832 INFO L226 Difference]: Without dead ends: 3935 [2022-03-03 17:53:12,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7685 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3319, Invalid=17273, Unknown=0, NotChecked=0, Total=20592 [2022-03-03 17:53:12,834 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 980 mSDsluCounter, 2408 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:12,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [980 Valid, 2424 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:53:12,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2022-03-03 17:53:12,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 2163. [2022-03-03 17:53:12,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 2.942645698427382) internal successors, (6362), 2162 states have internal predecessors, (6362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:12,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 6362 transitions. [2022-03-03 17:53:12,864 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 6362 transitions. Word has length 70 [2022-03-03 17:53:12,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:12,864 INFO L470 AbstractCegarLoop]: Abstraction has 2163 states and 6362 transitions. [2022-03-03 17:53:12,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:12,865 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 6362 transitions. [2022-03-03 17:53:12,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:53:12,867 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:12,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:12,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-03 17:53:13,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-03-03 17:53:13,071 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:13,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:13,072 INFO L85 PathProgramCache]: Analyzing trace with hash 774953799, now seen corresponding path program 28 times [2022-03-03 17:53:13,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:13,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387306226] [2022-03-03 17:53:13,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:13,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:13,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:13,202 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:13,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387306226] [2022-03-03 17:53:13,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387306226] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:53:13,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556885938] [2022-03-03 17:53:13,202 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:53:13,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:53:13,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:53:13,204 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:53:13,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-03 17:53:13,277 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:53:13,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:53:13,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 17:53:13,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:53:13,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:13,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:53:13,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:13,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556885938] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:53:13,950 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:53:13,950 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:53:13,951 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237310853] [2022-03-03 17:53:13,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:53:13,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:53:13,951 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:13,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:53:13,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:53:13,951 INFO L87 Difference]: Start difference. First operand 2163 states and 6362 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:17,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:17,148 INFO L93 Difference]: Finished difference Result 4136 states and 12015 transitions. [2022-03-03 17:53:17,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-03-03 17:53:17,148 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:53:17,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:17,155 INFO L225 Difference]: With dead ends: 4136 [2022-03-03 17:53:17,155 INFO L226 Difference]: Without dead ends: 3990 [2022-03-03 17:53:17,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8287 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2953, Invalid=20609, Unknown=0, NotChecked=0, Total=23562 [2022-03-03 17:53:17,157 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 856 mSDsluCounter, 3209 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 3242 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:17,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [856 Valid, 3242 Invalid, 2013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1887 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:53:17,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3990 states. [2022-03-03 17:53:17,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3990 to 2547. [2022-03-03 17:53:17,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2547 states, 2546 states have (on average 2.978004713275727) internal successors, (7582), 2546 states have internal predecessors, (7582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:17,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2547 states to 2547 states and 7582 transitions. [2022-03-03 17:53:17,195 INFO L78 Accepts]: Start accepts. Automaton has 2547 states and 7582 transitions. Word has length 70 [2022-03-03 17:53:17,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:17,195 INFO L470 AbstractCegarLoop]: Abstraction has 2547 states and 7582 transitions. [2022-03-03 17:53:17,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:17,195 INFO L276 IsEmpty]: Start isEmpty. Operand 2547 states and 7582 transitions. [2022-03-03 17:53:17,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:53:17,198 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:17,198 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:17,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-03 17:53:17,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:53:17,408 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:17,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:17,409 INFO L85 PathProgramCache]: Analyzing trace with hash 8283375, now seen corresponding path program 29 times [2022-03-03 17:53:17,409 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:17,409 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775895795] [2022-03-03 17:53:17,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:17,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:17,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:17,538 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:17,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775895795] [2022-03-03 17:53:17,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775895795] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:53:17,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670971487] [2022-03-03 17:53:17,538 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:53:17,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:53:17,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:53:17,540 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:53:17,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-03 17:53:17,600 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:53:17,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:53:17,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:53:17,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:53:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:17,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:53:18,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:18,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670971487] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:53:18,376 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:53:18,376 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:53:18,376 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607674931] [2022-03-03 17:53:18,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:53:18,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:53:18,376 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:18,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:53:18,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:53:18,377 INFO L87 Difference]: Start difference. First operand 2547 states and 7582 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:20,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:20,126 INFO L93 Difference]: Finished difference Result 4263 states and 12331 transitions. [2022-03-03 17:53:20,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-03 17:53:20,126 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:53:20,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:20,132 INFO L225 Difference]: With dead ends: 4263 [2022-03-03 17:53:20,132 INFO L226 Difference]: Without dead ends: 4131 [2022-03-03 17:53:20,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2009 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=825, Invalid=5981, Unknown=0, NotChecked=0, Total=6806 [2022-03-03 17:53:20,133 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 567 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 2781 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:20,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 2781 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:53:20,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4131 states. [2022-03-03 17:53:20,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4131 to 2583. [2022-03-03 17:53:20,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2583 states, 2582 states have (on average 2.9763749031758326) internal successors, (7685), 2582 states have internal predecessors, (7685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:20,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 7685 transitions. [2022-03-03 17:53:20,168 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 7685 transitions. Word has length 70 [2022-03-03 17:53:20,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:20,169 INFO L470 AbstractCegarLoop]: Abstraction has 2583 states and 7685 transitions. [2022-03-03 17:53:20,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:20,169 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 7685 transitions. [2022-03-03 17:53:20,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:53:20,171 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:20,172 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:20,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-03 17:53:20,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:53:20,379 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:20,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:20,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1430331001, now seen corresponding path program 30 times [2022-03-03 17:53:20,379 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:20,379 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623436450] [2022-03-03 17:53:20,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:20,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:20,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:20,508 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:20,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623436450] [2022-03-03 17:53:20,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623436450] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:53:20,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66253728] [2022-03-03 17:53:20,508 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:53:20,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:53:20,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:53:20,511 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:53:20,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-03 17:53:20,571 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:53:20,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:53:20,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 17:53:20,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:53:20,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:20,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:53:21,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:21,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66253728] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:53:21,248 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:53:21,248 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:53:21,248 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10333970] [2022-03-03 17:53:21,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:53:21,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:53:21,248 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:21,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:53:21,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:53:21,249 INFO L87 Difference]: Start difference. First operand 2583 states and 7685 transitions. Second operand has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:21,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:21,932 INFO L93 Difference]: Finished difference Result 3172 states and 9281 transitions. [2022-03-03 17:53:21,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:53:21,932 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:53:21,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:21,937 INFO L225 Difference]: With dead ends: 3172 [2022-03-03 17:53:21,937 INFO L226 Difference]: Without dead ends: 3031 [2022-03-03 17:53:21,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=418, Invalid=2774, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 17:53:21,938 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 442 mSDsluCounter, 2682 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 2667 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:21,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 2667 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:53:21,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2022-03-03 17:53:21,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 2699. [2022-03-03 17:53:21,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2698 states have (on average 2.968124536693847) internal successors, (8008), 2698 states have internal predecessors, (8008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:21,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 8008 transitions. [2022-03-03 17:53:21,973 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 8008 transitions. Word has length 70 [2022-03-03 17:53:21,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:21,973 INFO L470 AbstractCegarLoop]: Abstraction has 2699 states and 8008 transitions. [2022-03-03 17:53:21,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:21,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 8008 transitions. [2022-03-03 17:53:21,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:53:21,977 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:21,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:21,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-03 17:53:22,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2022-03-03 17:53:22,187 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:22,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:22,187 INFO L85 PathProgramCache]: Analyzing trace with hash -924716199, now seen corresponding path program 31 times [2022-03-03 17:53:22,187 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:22,187 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087564226] [2022-03-03 17:53:22,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:22,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:22,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:22,309 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:22,309 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087564226] [2022-03-03 17:53:22,309 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087564226] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:53:22,309 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128391279] [2022-03-03 17:53:22,309 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:53:22,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:53:22,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:53:22,310 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:53:22,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-03 17:53:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:22,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:53:22,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:53:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:22,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:53:23,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:23,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128391279] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:53:23,160 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:53:23,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:53:23,160 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766938175] [2022-03-03 17:53:23,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:53:23,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:53:23,160 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:23,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:53:23,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:53:23,161 INFO L87 Difference]: Start difference. First operand 2699 states and 8008 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:28,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:28,048 INFO L93 Difference]: Finished difference Result 7297 states and 21595 transitions. [2022-03-03 17:53:28,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2022-03-03 17:53:28,049 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:53:28,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:28,062 INFO L225 Difference]: With dead ends: 7297 [2022-03-03 17:53:28,062 INFO L226 Difference]: Without dead ends: 7171 [2022-03-03 17:53:28,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11497 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=4313, Invalid=25789, Unknown=0, NotChecked=0, Total=30102 [2022-03-03 17:53:28,064 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 1040 mSDsluCounter, 2857 mSDsCounter, 0 mSdLazyCounter, 1479 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 2882 SdHoareTripleChecker+Invalid, 1645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:28,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1040 Valid, 2882 Invalid, 1645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1479 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:53:28,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7171 states. [2022-03-03 17:53:28,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7171 to 2923. [2022-03-03 17:53:28,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2922 states have (on average 2.9791238877481176) internal successors, (8705), 2922 states have internal predecessors, (8705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:28,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 8705 transitions. [2022-03-03 17:53:28,122 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 8705 transitions. Word has length 70 [2022-03-03 17:53:28,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:28,122 INFO L470 AbstractCegarLoop]: Abstraction has 2923 states and 8705 transitions. [2022-03-03 17:53:28,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:28,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 8705 transitions. [2022-03-03 17:53:28,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:53:28,126 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:28,126 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] [2022-03-03 17:53:28,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-03 17:53:28,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:53:28,327 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:28,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:28,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1785280403, now seen corresponding path program 32 times [2022-03-03 17:53:28,327 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:28,327 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824540087] [2022-03-03 17:53:28,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:28,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:28,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:28,464 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:28,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824540087] [2022-03-03 17:53:28,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824540087] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:53:28,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75997712] [2022-03-03 17:53:28,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:53:28,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:53:28,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:53:28,476 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:53:28,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-03 17:53:28,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:53:28,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:53:28,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:53:28,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:53:28,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:28,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:53:29,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:29,378 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75997712] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:53:29,378 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:53:29,378 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:53:29,378 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240493773] [2022-03-03 17:53:29,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:53:29,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:53:29,379 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:29,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:53:29,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=983, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:53:29,379 INFO L87 Difference]: Start difference. First operand 2923 states and 8705 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:34,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:34,218 INFO L93 Difference]: Finished difference Result 7159 states and 21275 transitions. [2022-03-03 17:53:34,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2022-03-03 17:53:34,218 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:53:34,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:34,229 INFO L225 Difference]: With dead ends: 7159 [2022-03-03 17:53:34,230 INFO L226 Difference]: Without dead ends: 7019 [2022-03-03 17:53:34,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11450 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=4310, Invalid=25792, Unknown=0, NotChecked=0, Total=30102 [2022-03-03 17:53:34,232 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 1121 mSDsluCounter, 2749 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:34,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 2761 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:53:34,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7019 states. [2022-03-03 17:53:34,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7019 to 2943. [2022-03-03 17:53:34,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2943 states, 2942 states have (on average 2.976206662134602) internal successors, (8756), 2942 states have internal predecessors, (8756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:34,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2943 states to 2943 states and 8756 transitions. [2022-03-03 17:53:34,315 INFO L78 Accepts]: Start accepts. Automaton has 2943 states and 8756 transitions. Word has length 70 [2022-03-03 17:53:34,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:34,315 INFO L470 AbstractCegarLoop]: Abstraction has 2943 states and 8756 transitions. [2022-03-03 17:53:34,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:34,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2943 states and 8756 transitions. [2022-03-03 17:53:34,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:53:34,318 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:34,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:34,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-03 17:53:34,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:53:34,519 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:34,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:34,520 INFO L85 PathProgramCache]: Analyzing trace with hash 498671457, now seen corresponding path program 33 times [2022-03-03 17:53:34,520 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:34,520 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124333060] [2022-03-03 17:53:34,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:34,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:34,638 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:34,638 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124333060] [2022-03-03 17:53:34,638 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124333060] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:53:34,638 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237916521] [2022-03-03 17:53:34,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:53:34,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:53:34,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:53:34,639 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:53:34,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-03 17:53:34,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:53:34,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:53:34,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:53:34,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:53:34,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:34,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:53:35,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:35,467 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237916521] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:53:35,467 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:53:35,467 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:53:35,467 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073936112] [2022-03-03 17:53:35,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:53:35,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:53:35,467 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:35,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:53:35,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:53:35,468 INFO L87 Difference]: Start difference. First operand 2943 states and 8756 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:41,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:41,474 INFO L93 Difference]: Finished difference Result 7372 states and 21849 transitions. [2022-03-03 17:53:41,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2022-03-03 17:53:41,474 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:53:41,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:41,486 INFO L225 Difference]: With dead ends: 7372 [2022-03-03 17:53:41,486 INFO L226 Difference]: Without dead ends: 7240 [2022-03-03 17:53:41,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15559 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=5327, Invalid=33679, Unknown=0, NotChecked=0, Total=39006 [2022-03-03 17:53:41,489 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 1137 mSDsluCounter, 3135 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:41,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 3127 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:53:41,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7240 states. [2022-03-03 17:53:41,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7240 to 2911. [2022-03-03 17:53:41,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2911 states, 2910 states have (on average 2.9786941580756015) internal successors, (8668), 2910 states have internal predecessors, (8668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:41,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2911 states to 2911 states and 8668 transitions. [2022-03-03 17:53:41,560 INFO L78 Accepts]: Start accepts. Automaton has 2911 states and 8668 transitions. Word has length 70 [2022-03-03 17:53:41,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:41,560 INFO L470 AbstractCegarLoop]: Abstraction has 2911 states and 8668 transitions. [2022-03-03 17:53:41,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:41,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2911 states and 8668 transitions. [2022-03-03 17:53:41,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:53:41,564 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:41,564 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:41,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-03-03 17:53:41,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-03-03 17:53:41,775 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:41,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:41,775 INFO L85 PathProgramCache]: Analyzing trace with hash -880369499, now seen corresponding path program 34 times [2022-03-03 17:53:41,776 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:41,776 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596088873] [2022-03-03 17:53:41,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:41,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:41,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:41,908 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:41,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596088873] [2022-03-03 17:53:41,908 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596088873] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:53:41,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852418019] [2022-03-03 17:53:41,908 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:53:41,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:53:41,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:53:41,909 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:53:41,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-03 17:53:41,969 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:53:41,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:53:41,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 17:53:41,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:53:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:42,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:53:42,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:42,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852418019] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:53:42,612 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:53:42,612 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:53:42,612 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951853320] [2022-03-03 17:53:42,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:53:42,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:53:42,613 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:42,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:53:42,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:53:42,613 INFO L87 Difference]: Start difference. First operand 2911 states and 8668 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:45,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:45,233 INFO L93 Difference]: Finished difference Result 6164 states and 18125 transitions. [2022-03-03 17:53:45,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-03-03 17:53:45,233 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:53:45,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:45,242 INFO L225 Difference]: With dead ends: 6164 [2022-03-03 17:53:45,242 INFO L226 Difference]: Without dead ends: 6053 [2022-03-03 17:53:45,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5871 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2442, Invalid=13560, Unknown=0, NotChecked=0, Total=16002 [2022-03-03 17:53:45,243 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 891 mSDsluCounter, 3461 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 3435 SdHoareTripleChecker+Invalid, 1712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:45,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [891 Valid, 3435 Invalid, 1712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1607 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:53:45,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6053 states. [2022-03-03 17:53:45,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6053 to 2947. [2022-03-03 17:53:45,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2947 states, 2946 states have (on average 2.9813306177868295) internal successors, (8783), 2946 states have internal predecessors, (8783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:45,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2947 states to 2947 states and 8783 transitions. [2022-03-03 17:53:45,290 INFO L78 Accepts]: Start accepts. Automaton has 2947 states and 8783 transitions. Word has length 70 [2022-03-03 17:53:45,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:45,291 INFO L470 AbstractCegarLoop]: Abstraction has 2947 states and 8783 transitions. [2022-03-03 17:53:45,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:45,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2947 states and 8783 transitions. [2022-03-03 17:53:45,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:53:45,294 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:45,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:45,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-03 17:53:45,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:53:45,495 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:45,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:45,495 INFO L85 PathProgramCache]: Analyzing trace with hash -438219463, now seen corresponding path program 35 times [2022-03-03 17:53:45,495 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:45,495 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668790806] [2022-03-03 17:53:45,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:45,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:45,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:45,623 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:45,623 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668790806] [2022-03-03 17:53:45,623 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668790806] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:53:45,623 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215455156] [2022-03-03 17:53:45,623 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:53:45,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:53:45,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:53:45,624 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:53:45,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-03 17:53:45,686 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:53:45,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:53:45,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 17:53:45,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:53:45,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:45,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-03 17:53:45,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215455156] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:53:45,961 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-03 17:53:45,961 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 25 [2022-03-03 17:53:45,961 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941180833] [2022-03-03 17:53:45,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:53:45,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 17:53:45,962 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:45,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 17:53:45,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:53:45,962 INFO L87 Difference]: Start difference. First operand 2947 states and 8783 transitions. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:46,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:46,393 INFO L93 Difference]: Finished difference Result 3382 states and 9952 transitions. [2022-03-03 17:53:46,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 17:53:46,393 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:53:46,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:46,398 INFO L225 Difference]: With dead ends: 3382 [2022-03-03 17:53:46,398 INFO L226 Difference]: Without dead ends: 3315 [2022-03-03 17:53:46,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=336, Invalid=1734, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 17:53:46,398 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 212 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:46,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 1232 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:53:46,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3315 states. [2022-03-03 17:53:46,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3315 to 2859. [2022-03-03 17:53:46,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2859 states, 2858 states have (on average 2.9730580825752275) internal successors, (8497), 2858 states have internal predecessors, (8497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:46,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 8497 transitions. [2022-03-03 17:53:46,431 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 8497 transitions. Word has length 70 [2022-03-03 17:53:46,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:46,431 INFO L470 AbstractCegarLoop]: Abstraction has 2859 states and 8497 transitions. [2022-03-03 17:53:46,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:46,431 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 8497 transitions. [2022-03-03 17:53:46,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:53:46,434 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:46,434 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:46,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-03 17:53:46,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-03-03 17:53:46,635 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:46,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:46,635 INFO L85 PathProgramCache]: Analyzing trace with hash -2023190157, now seen corresponding path program 36 times [2022-03-03 17:53:46,635 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:46,635 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054649620] [2022-03-03 17:53:46,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:46,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:46,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:46,773 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:46,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054649620] [2022-03-03 17:53:46,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054649620] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:53:46,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298535900] [2022-03-03 17:53:46,773 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:53:46,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:53:46,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:53:46,774 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:53:46,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-03 17:53:46,837 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:53:46,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:53:46,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:53:46,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:53:47,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:47,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:53:47,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:47,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298535900] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:53:47,607 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:53:47,607 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:53:47,607 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345108397] [2022-03-03 17:53:47,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:53:47,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:53:47,607 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:47,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:53:47,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=972, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:53:47,608 INFO L87 Difference]: Start difference. First operand 2859 states and 8497 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:54,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:54,127 INFO L93 Difference]: Finished difference Result 7388 states and 21882 transitions. [2022-03-03 17:53:54,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2022-03-03 17:53:54,127 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:53:54,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:54,138 INFO L225 Difference]: With dead ends: 7388 [2022-03-03 17:53:54,138 INFO L226 Difference]: Without dead ends: 7248 [2022-03-03 17:53:54,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19327 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=7100, Invalid=39772, Unknown=0, NotChecked=0, Total=46872 [2022-03-03 17:53:54,140 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 1263 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:54,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1263 Valid, 2657 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:53:54,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7248 states. [2022-03-03 17:53:54,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7248 to 2899. [2022-03-03 17:53:54,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2899 states, 2898 states have (on average 2.9755003450655626) internal successors, (8623), 2898 states have internal predecessors, (8623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:54,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 8623 transitions. [2022-03-03 17:53:54,193 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 8623 transitions. Word has length 70 [2022-03-03 17:53:54,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:54,193 INFO L470 AbstractCegarLoop]: Abstraction has 2899 states and 8623 transitions. [2022-03-03 17:53:54,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:53:54,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 8623 transitions. [2022-03-03 17:53:54,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:53:54,197 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:54,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:53:54,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-03 17:53:54,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:53:54,397 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:54,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:54,398 INFO L85 PathProgramCache]: Analyzing trace with hash 985168193, now seen corresponding path program 37 times [2022-03-03 17:53:54,398 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:54,398 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807737837] [2022-03-03 17:53:54,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:54,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:54,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:54,508 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:54,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807737837] [2022-03-03 17:53:54,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807737837] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:53:54,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296714643] [2022-03-03 17:53:54,508 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:53:54,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:53:54,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:53:54,509 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:53:54,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-03 17:53:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:54,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:53:54,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:53:54,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:54,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:53:55,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:55,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296714643] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:53:55,340 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:53:55,340 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:53:55,340 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825180169] [2022-03-03 17:53:55,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:53:55,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:53:55,340 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:55,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:53:55,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:53:55,340 INFO L87 Difference]: Start difference. First operand 2899 states and 8623 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:03,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:03,315 INFO L93 Difference]: Finished difference Result 7844 states and 23020 transitions. [2022-03-03 17:54:03,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-03-03 17:54:03,316 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:54:03,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:03,328 INFO L225 Difference]: With dead ends: 7844 [2022-03-03 17:54:03,328 INFO L226 Difference]: Without dead ends: 7712 [2022-03-03 17:54:03,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25481 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=8557, Invalid=51223, Unknown=0, NotChecked=0, Total=59780 [2022-03-03 17:54:03,331 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 1551 mSDsluCounter, 2787 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 2799 SdHoareTripleChecker+Invalid, 1676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:03,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1551 Valid, 2799 Invalid, 1676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:54:03,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7712 states. [2022-03-03 17:54:03,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7712 to 2875. [2022-03-03 17:54:03,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2874 states have (on average 2.977383437717467) internal successors, (8557), 2874 states have internal predecessors, (8557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:03,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 8557 transitions. [2022-03-03 17:54:03,405 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 8557 transitions. Word has length 70 [2022-03-03 17:54:03,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:03,405 INFO L470 AbstractCegarLoop]: Abstraction has 2875 states and 8557 transitions. [2022-03-03 17:54:03,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:03,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 8557 transitions. [2022-03-03 17:54:03,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:54:03,408 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:03,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:03,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-03-03 17:54:03,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-03-03 17:54:03,609 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:03,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:03,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1261426403, now seen corresponding path program 38 times [2022-03-03 17:54:03,609 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:03,609 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365259558] [2022-03-03 17:54:03,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:03,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:03,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:03,742 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:03,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365259558] [2022-03-03 17:54:03,742 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365259558] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:54:03,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418963443] [2022-03-03 17:54:03,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:54:03,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:03,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:54:03,743 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:54:03,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-03 17:54:03,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:54:03,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:54:03,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:54:03,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:54:04,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:04,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:54:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:04,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418963443] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:54:04,612 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:54:04,612 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:54:04,612 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687673241] [2022-03-03 17:54:04,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:54:04,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:54:04,613 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:04,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:54:04,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:54:04,613 INFO L87 Difference]: Start difference. First operand 2875 states and 8557 transitions. Second operand has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:06,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:06,083 INFO L93 Difference]: Finished difference Result 3171 states and 9296 transitions. [2022-03-03 17:54:06,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-03 17:54:06,083 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:54:06,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:06,088 INFO L225 Difference]: With dead ends: 3171 [2022-03-03 17:54:06,088 INFO L226 Difference]: Without dead ends: 3108 [2022-03-03 17:54:06,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1955 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1327, Invalid=5645, Unknown=0, NotChecked=0, Total=6972 [2022-03-03 17:54:06,089 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 735 mSDsluCounter, 2679 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:06,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 2684 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:54:06,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2022-03-03 17:54:06,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 2895. [2022-03-03 17:54:06,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2895 states, 2894 states have (on average 2.977194194885971) internal successors, (8616), 2894 states have internal predecessors, (8616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:06,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 8616 transitions. [2022-03-03 17:54:06,126 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 8616 transitions. Word has length 70 [2022-03-03 17:54:06,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:06,126 INFO L470 AbstractCegarLoop]: Abstraction has 2895 states and 8616 transitions. [2022-03-03 17:54:06,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:06,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 8616 transitions. [2022-03-03 17:54:06,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:54:06,130 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:06,130 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:06,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-03 17:54:06,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:06,330 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:06,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:06,331 INFO L85 PathProgramCache]: Analyzing trace with hash -450663193, now seen corresponding path program 39 times [2022-03-03 17:54:06,331 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:06,331 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110180800] [2022-03-03 17:54:06,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:06,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:06,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:06,452 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:06,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110180800] [2022-03-03 17:54:06,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110180800] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:54:06,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641293821] [2022-03-03 17:54:06,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:54:06,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:06,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:54:06,454 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:54:06,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-03 17:54:06,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:54:06,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:54:06,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:54:06,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:54:06,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:06,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:54:07,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:07,307 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641293821] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:54:07,307 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:54:07,307 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:54:07,307 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775667307] [2022-03-03 17:54:07,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:54:07,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:54:07,308 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:07,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:54:07,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:54:07,308 INFO L87 Difference]: Start difference. First operand 2895 states and 8616 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:08,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:08,688 INFO L93 Difference]: Finished difference Result 3164 states and 9233 transitions. [2022-03-03 17:54:08,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-03 17:54:08,688 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:54:08,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:08,693 INFO L225 Difference]: With dead ends: 3164 [2022-03-03 17:54:08,693 INFO L226 Difference]: Without dead ends: 3101 [2022-03-03 17:54:08,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1884 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1297, Invalid=5509, Unknown=0, NotChecked=0, Total=6806 [2022-03-03 17:54:08,694 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 632 mSDsluCounter, 2316 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:08,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [632 Valid, 2338 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:54:08,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3101 states. [2022-03-03 17:54:08,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3101 to 2263. [2022-03-03 17:54:08,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 2.892130857648099) internal successors, (6542), 2262 states have internal predecessors, (6542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:08,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 6542 transitions. [2022-03-03 17:54:08,724 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 6542 transitions. Word has length 70 [2022-03-03 17:54:08,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:08,724 INFO L470 AbstractCegarLoop]: Abstraction has 2263 states and 6542 transitions. [2022-03-03 17:54:08,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:08,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 6542 transitions. [2022-03-03 17:54:08,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:54:08,727 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:08,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:08,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-03 17:54:08,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:08,927 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:08,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:08,928 INFO L85 PathProgramCache]: Analyzing trace with hash -2035633887, now seen corresponding path program 40 times [2022-03-03 17:54:08,928 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:08,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206102709] [2022-03-03 17:54:08,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:08,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:09,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:09,062 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:09,062 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206102709] [2022-03-03 17:54:09,062 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206102709] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:54:09,062 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245817278] [2022-03-03 17:54:09,062 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:54:09,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:09,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:54:09,064 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:54:09,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-03 17:54:09,140 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:54:09,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:54:09,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 17:54:09,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:54:09,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:09,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:54:09,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:09,805 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245817278] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:54:09,805 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:54:09,805 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:54:09,805 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2352677] [2022-03-03 17:54:09,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:54:09,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:54:09,806 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:09,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:54:09,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:54:09,806 INFO L87 Difference]: Start difference. First operand 2263 states and 6542 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:13,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:13,577 INFO L93 Difference]: Finished difference Result 4510 states and 12932 transitions. [2022-03-03 17:54:13,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-03-03 17:54:13,577 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:54:13,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:13,584 INFO L225 Difference]: With dead ends: 4510 [2022-03-03 17:54:13,584 INFO L226 Difference]: Without dead ends: 4398 [2022-03-03 17:54:13,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10124 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4209, Invalid=22851, Unknown=0, NotChecked=0, Total=27060 [2022-03-03 17:54:13,585 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 1071 mSDsluCounter, 3338 mSDsCounter, 0 mSdLazyCounter, 1787 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 3352 SdHoareTripleChecker+Invalid, 1944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:13,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1071 Valid, 3352 Invalid, 1944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1787 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:54:13,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4398 states. [2022-03-03 17:54:13,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4398 to 2271. [2022-03-03 17:54:13,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2271 states, 2270 states have (on average 2.8969162995594715) internal successors, (6576), 2270 states have internal predecessors, (6576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:13,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 6576 transitions. [2022-03-03 17:54:13,619 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 6576 transitions. Word has length 70 [2022-03-03 17:54:13,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:13,619 INFO L470 AbstractCegarLoop]: Abstraction has 2271 states and 6576 transitions. [2022-03-03 17:54:13,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:13,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 6576 transitions. [2022-03-03 17:54:13,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:54:13,621 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:13,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:13,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-03 17:54:13,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2022-03-03 17:54:13,822 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:13,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:13,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1492662985, now seen corresponding path program 41 times [2022-03-03 17:54:13,822 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:13,822 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320735135] [2022-03-03 17:54:13,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:13,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:13,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:13,935 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:13,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320735135] [2022-03-03 17:54:13,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320735135] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:54:13,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370791859] [2022-03-03 17:54:13,935 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:54:13,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:13,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:54:13,937 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:54:13,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-03 17:54:14,000 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:54:14,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:54:14,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:54:14,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:54:14,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:14,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:54:14,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:14,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370791859] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:54:14,769 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:54:14,769 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:54:14,769 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568711880] [2022-03-03 17:54:14,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:54:14,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:54:14,769 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:14,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:54:14,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=987, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:54:14,770 INFO L87 Difference]: Start difference. First operand 2271 states and 6576 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:17,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:17,563 INFO L93 Difference]: Finished difference Result 4929 states and 14107 transitions. [2022-03-03 17:54:17,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-03-03 17:54:17,563 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:54:17,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:17,571 INFO L225 Difference]: With dead ends: 4929 [2022-03-03 17:54:17,571 INFO L226 Difference]: Without dead ends: 4797 [2022-03-03 17:54:17,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4832 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1870, Invalid=12172, Unknown=0, NotChecked=0, Total=14042 [2022-03-03 17:54:17,572 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 937 mSDsluCounter, 3019 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 2995 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:17,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [937 Valid, 2995 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:54:17,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4797 states. [2022-03-03 17:54:17,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4797 to 2279. [2022-03-03 17:54:17,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 2278 states have (on average 2.89640035118525) internal successors, (6598), 2278 states have internal predecessors, (6598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:17,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 6598 transitions. [2022-03-03 17:54:17,611 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 6598 transitions. Word has length 70 [2022-03-03 17:54:17,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:17,612 INFO L470 AbstractCegarLoop]: Abstraction has 2279 states and 6598 transitions. [2022-03-03 17:54:17,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:17,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 6598 transitions. [2022-03-03 17:54:17,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:54:17,614 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:17,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:17,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-03 17:54:17,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:17,815 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:17,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:17,815 INFO L85 PathProgramCache]: Analyzing trace with hash 54048609, now seen corresponding path program 42 times [2022-03-03 17:54:17,815 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:17,815 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134153332] [2022-03-03 17:54:17,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:17,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:17,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:17,940 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:17,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134153332] [2022-03-03 17:54:17,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134153332] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:54:17,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146551466] [2022-03-03 17:54:17,940 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:54:17,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:17,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:54:17,941 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:54:17,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-03 17:54:18,008 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:54:18,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:54:18,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 17:54:18,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:54:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:18,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:54:18,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:18,613 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146551466] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:54:18,613 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:54:18,614 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:54:18,614 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405879767] [2022-03-03 17:54:18,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:54:18,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:54:18,614 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:18,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:54:18,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:54:18,614 INFO L87 Difference]: Start difference. First operand 2279 states and 6598 transitions. Second operand has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:19,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:19,639 INFO L93 Difference]: Finished difference Result 2897 states and 8239 transitions. [2022-03-03 17:54:19,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-03 17:54:19,640 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:54:19,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:19,644 INFO L225 Difference]: With dead ends: 2897 [2022-03-03 17:54:19,644 INFO L226 Difference]: Without dead ends: 2756 [2022-03-03 17:54:19,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1558 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=825, Invalid=4725, Unknown=0, NotChecked=0, Total=5550 [2022-03-03 17:54:19,645 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 738 mSDsluCounter, 2816 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 2797 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:19,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 2797 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:54:19,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2022-03-03 17:54:19,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2183. [2022-03-03 17:54:19,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2183 states, 2182 states have (on average 2.8900091659028413) internal successors, (6306), 2182 states have internal predecessors, (6306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:19,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 6306 transitions. [2022-03-03 17:54:19,685 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 6306 transitions. Word has length 70 [2022-03-03 17:54:19,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:19,685 INFO L470 AbstractCegarLoop]: Abstraction has 2183 states and 6306 transitions. [2022-03-03 17:54:19,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:19,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 6306 transitions. [2022-03-03 17:54:19,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:54:19,696 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:19,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:19,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-03-03 17:54:19,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:19,902 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:19,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:19,902 INFO L85 PathProgramCache]: Analyzing trace with hash 2133956963, now seen corresponding path program 43 times [2022-03-03 17:54:19,902 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:19,902 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320479874] [2022-03-03 17:54:19,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:19,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:20,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:20,040 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:20,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320479874] [2022-03-03 17:54:20,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320479874] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:54:20,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119806983] [2022-03-03 17:54:20,040 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:54:20,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:20,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:54:20,042 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:54:20,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-03 17:54:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:20,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:54:20,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:54:20,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:20,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:54:20,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:20,895 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119806983] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:54:20,895 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:54:20,895 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:54:20,895 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481688822] [2022-03-03 17:54:20,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:54:20,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:54:20,896 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:20,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:54:20,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:54:20,896 INFO L87 Difference]: Start difference. First operand 2183 states and 6306 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:22,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:22,459 INFO L93 Difference]: Finished difference Result 4598 states and 13080 transitions. [2022-03-03 17:54:22,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-03 17:54:22,459 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:54:22,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:22,466 INFO L225 Difference]: With dead ends: 4598 [2022-03-03 17:54:22,466 INFO L226 Difference]: Without dead ends: 4523 [2022-03-03 17:54:22,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2152 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1064, Invalid=5908, Unknown=0, NotChecked=0, Total=6972 [2022-03-03 17:54:22,467 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 827 mSDsluCounter, 2402 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:22,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 2449 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:54:22,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4523 states. [2022-03-03 17:54:22,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4523 to 2247. [2022-03-03 17:54:22,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 2.885574354407836) internal successors, (6481), 2246 states have internal predecessors, (6481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:22,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 6481 transitions. [2022-03-03 17:54:22,505 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 6481 transitions. Word has length 70 [2022-03-03 17:54:22,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:22,505 INFO L470 AbstractCegarLoop]: Abstraction has 2247 states and 6481 transitions. [2022-03-03 17:54:22,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:22,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 6481 transitions. [2022-03-03 17:54:22,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:54:22,508 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:22,508 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] [2022-03-03 17:54:22,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-03-03 17:54:22,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2022-03-03 17:54:22,709 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:22,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:22,709 INFO L85 PathProgramCache]: Analyzing trace with hash 548986269, now seen corresponding path program 44 times [2022-03-03 17:54:22,709 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:22,709 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844676980] [2022-03-03 17:54:22,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:22,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:22,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:22,852 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:22,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844676980] [2022-03-03 17:54:22,852 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844676980] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:54:22,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302328440] [2022-03-03 17:54:22,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:54:22,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:22,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:54:22,854 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:54:22,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-03 17:54:22,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:54:22,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:54:22,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:54:22,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:54:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:23,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:54:23,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:23,745 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302328440] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:54:23,745 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:54:23,745 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:54:23,745 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371510484] [2022-03-03 17:54:23,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:54:23,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:54:23,745 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:23,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:54:23,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:54:23,745 INFO L87 Difference]: Start difference. First operand 2247 states and 6481 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:25,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:25,322 INFO L93 Difference]: Finished difference Result 4388 states and 12581 transitions. [2022-03-03 17:54:25,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-03-03 17:54:25,322 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:54:25,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:25,329 INFO L225 Difference]: With dead ends: 4388 [2022-03-03 17:54:25,329 INFO L226 Difference]: Without dead ends: 4248 [2022-03-03 17:54:25,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2279 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1073, Invalid=6237, Unknown=0, NotChecked=0, Total=7310 [2022-03-03 17:54:25,330 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 568 mSDsluCounter, 2848 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 2849 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:25,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 2849 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:54:25,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4248 states. [2022-03-03 17:54:25,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4248 to 2267. [2022-03-03 17:54:25,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2267 states, 2266 states have (on average 2.88261253309797) internal successors, (6532), 2266 states have internal predecessors, (6532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:25,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2267 states to 2267 states and 6532 transitions. [2022-03-03 17:54:25,365 INFO L78 Accepts]: Start accepts. Automaton has 2267 states and 6532 transitions. Word has length 70 [2022-03-03 17:54:25,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:25,365 INFO L470 AbstractCegarLoop]: Abstraction has 2267 states and 6532 transitions. [2022-03-03 17:54:25,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:25,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2267 states and 6532 transitions. [2022-03-03 17:54:25,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:54:25,368 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:25,368 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] [2022-03-03 17:54:25,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-03-03 17:54:25,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:25,569 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:25,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:25,569 INFO L85 PathProgramCache]: Analyzing trace with hash -737622677, now seen corresponding path program 45 times [2022-03-03 17:54:25,569 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:25,569 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391216801] [2022-03-03 17:54:25,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:25,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:25,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:25,683 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:25,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391216801] [2022-03-03 17:54:25,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391216801] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:54:25,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39290266] [2022-03-03 17:54:25,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:54:25,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:25,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:54:25,686 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:54:25,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-03 17:54:25,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:54:25,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:54:25,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:54:25,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:54:26,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:26,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:54:26,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:26,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39290266] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:54:26,528 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:54:26,528 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:54:26,528 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412210365] [2022-03-03 17:54:26,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:54:26,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:54:26,528 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:26,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:54:26,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:54:26,528 INFO L87 Difference]: Start difference. First operand 2267 states and 6532 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:28,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:28,843 INFO L93 Difference]: Finished difference Result 4685 states and 13369 transitions. [2022-03-03 17:54:28,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-03-03 17:54:28,843 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:54:28,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:28,851 INFO L225 Difference]: With dead ends: 4685 [2022-03-03 17:54:28,851 INFO L226 Difference]: Without dead ends: 4553 [2022-03-03 17:54:28,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4133 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1639, Invalid=10351, Unknown=0, NotChecked=0, Total=11990 [2022-03-03 17:54:28,852 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 793 mSDsluCounter, 2622 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:28,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 2640 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:54:28,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4553 states. [2022-03-03 17:54:28,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4553 to 2239. [2022-03-03 17:54:28,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2239 states, 2238 states have (on average 2.884271671134942) internal successors, (6455), 2238 states have internal predecessors, (6455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:28,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2239 states to 2239 states and 6455 transitions. [2022-03-03 17:54:28,889 INFO L78 Accepts]: Start accepts. Automaton has 2239 states and 6455 transitions. Word has length 70 [2022-03-03 17:54:28,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:28,889 INFO L470 AbstractCegarLoop]: Abstraction has 2239 states and 6455 transitions. [2022-03-03 17:54:28,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:28,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2239 states and 6455 transitions. [2022-03-03 17:54:28,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:54:28,891 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:28,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:28,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-03-03 17:54:29,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-03-03 17:54:29,092 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:29,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:29,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2116663633, now seen corresponding path program 46 times [2022-03-03 17:54:29,093 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:29,093 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046641906] [2022-03-03 17:54:29,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:29,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:29,207 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:29,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046641906] [2022-03-03 17:54:29,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046641906] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:54:29,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982692600] [2022-03-03 17:54:29,208 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:54:29,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:29,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:54:29,209 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:54:29,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-03 17:54:29,277 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:54:29,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:54:29,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 17:54:29,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:54:29,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:29,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:54:29,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:29,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982692600] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:54:29,927 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:54:29,927 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:54:29,927 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871980902] [2022-03-03 17:54:29,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:54:29,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:54:29,928 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:29,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:54:29,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:54:29,928 INFO L87 Difference]: Start difference. First operand 2239 states and 6455 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:30,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:30,723 INFO L93 Difference]: Finished difference Result 3694 states and 10488 transitions. [2022-03-03 17:54:30,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 17:54:30,723 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:54:30,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:30,729 INFO L225 Difference]: With dead ends: 3694 [2022-03-03 17:54:30,729 INFO L226 Difference]: Without dead ends: 3583 [2022-03-03 17:54:30,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=420, Invalid=3002, Unknown=0, NotChecked=0, Total=3422 [2022-03-03 17:54:30,730 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 478 mSDsluCounter, 3274 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 3261 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:30,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 3261 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:54:30,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2022-03-03 17:54:30,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 2261. [2022-03-03 17:54:30,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 2260 states have (on average 2.8809734513274337) internal successors, (6511), 2260 states have internal predecessors, (6511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:30,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 6511 transitions. [2022-03-03 17:54:30,761 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 6511 transitions. Word has length 70 [2022-03-03 17:54:30,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:30,761 INFO L470 AbstractCegarLoop]: Abstraction has 2261 states and 6511 transitions. [2022-03-03 17:54:30,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:30,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 6511 transitions. [2022-03-03 17:54:30,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:54:30,765 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:30,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:30,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-03-03 17:54:30,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:30,967 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:30,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:30,968 INFO L85 PathProgramCache]: Analyzing trace with hash 739689287, now seen corresponding path program 47 times [2022-03-03 17:54:30,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:30,968 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419196341] [2022-03-03 17:54:30,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:30,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:31,088 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:31,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419196341] [2022-03-03 17:54:31,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419196341] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:54:31,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921939813] [2022-03-03 17:54:31,088 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:54:31,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:31,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:54:31,089 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:54:31,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-03 17:54:31,157 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:54:31,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:54:31,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 17:54:31,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:54:31,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:31,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:54:31,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:31,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921939813] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:54:31,748 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:54:31,749 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:54:31,749 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292667371] [2022-03-03 17:54:31,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:54:31,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:54:31,749 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:31,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:54:31,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:54:31,749 INFO L87 Difference]: Start difference. First operand 2261 states and 6511 transitions. Second operand has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:32,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:32,566 INFO L93 Difference]: Finished difference Result 2798 states and 7920 transitions. [2022-03-03 17:54:32,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-03 17:54:32,567 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:54:32,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:32,571 INFO L225 Difference]: With dead ends: 2798 [2022-03-03 17:54:32,571 INFO L226 Difference]: Without dead ends: 2657 [2022-03-03 17:54:32,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=473, Invalid=3187, Unknown=0, NotChecked=0, Total=3660 [2022-03-03 17:54:32,572 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 569 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 2898 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:32,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 2898 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:54:32,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2022-03-03 17:54:32,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 2257. [2022-03-03 17:54:32,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 2.870567375886525) internal successors, (6476), 2256 states have internal predecessors, (6476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:32,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 6476 transitions. [2022-03-03 17:54:32,600 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 6476 transitions. Word has length 70 [2022-03-03 17:54:32,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:32,600 INFO L470 AbstractCegarLoop]: Abstraction has 2257 states and 6476 transitions. [2022-03-03 17:54:32,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:32,601 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 6476 transitions. [2022-03-03 17:54:32,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:54:32,603 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:32,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:32,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-03-03 17:54:32,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:32,804 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:32,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:32,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1789143841, now seen corresponding path program 48 times [2022-03-03 17:54:32,804 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:32,804 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459422928] [2022-03-03 17:54:32,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:32,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:32,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:32,923 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:32,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459422928] [2022-03-03 17:54:32,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459422928] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:54:32,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297478] [2022-03-03 17:54:32,923 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:54:32,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:32,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:54:32,924 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:54:32,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-03 17:54:32,998 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:54:32,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:54:32,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:54:33,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:54:33,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:33,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:54:33,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:33,805 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297478] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:54:33,805 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:54:33,805 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:54:33,805 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063767440] [2022-03-03 17:54:33,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:54:33,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:54:33,805 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:33,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:54:33,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:54:33,806 INFO L87 Difference]: Start difference. First operand 2257 states and 6476 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:35,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:35,644 INFO L93 Difference]: Finished difference Result 4626 states and 12971 transitions. [2022-03-03 17:54:35,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-03-03 17:54:35,645 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:54:35,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:35,651 INFO L225 Difference]: With dead ends: 4626 [2022-03-03 17:54:35,652 INFO L226 Difference]: Without dead ends: 4327 [2022-03-03 17:54:35,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2369 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=892, Invalid=6590, Unknown=0, NotChecked=0, Total=7482 [2022-03-03 17:54:35,652 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 1011 mSDsluCounter, 3263 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 3225 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:35,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1011 Valid, 3225 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:54:35,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4327 states. [2022-03-03 17:54:35,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4327 to 2221. [2022-03-03 17:54:35,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2221 states, 2220 states have (on average 2.7882882882882885) internal successors, (6190), 2220 states have internal predecessors, (6190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:35,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 6190 transitions. [2022-03-03 17:54:35,687 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 6190 transitions. Word has length 70 [2022-03-03 17:54:35,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:35,688 INFO L470 AbstractCegarLoop]: Abstraction has 2221 states and 6190 transitions. [2022-03-03 17:54:35,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:35,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 6190 transitions. [2022-03-03 17:54:35,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:54:35,690 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:35,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:35,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-03-03 17:54:35,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:35,895 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:35,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:35,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1345581259, now seen corresponding path program 49 times [2022-03-03 17:54:35,896 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:35,896 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428442560] [2022-03-03 17:54:35,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:35,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:36,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:36,017 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:36,017 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428442560] [2022-03-03 17:54:36,017 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428442560] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:54:36,017 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606237156] [2022-03-03 17:54:36,017 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:54:36,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:36,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:54:36,019 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:54:36,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-03 17:54:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:36,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:54:36,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:54:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:36,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:54:36,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:36,909 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606237156] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:54:36,909 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:54:36,909 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:54:36,909 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378636273] [2022-03-03 17:54:36,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:54:36,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:54:36,909 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:36,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:54:36,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:54:36,910 INFO L87 Difference]: Start difference. First operand 2221 states and 6190 transitions. Second operand has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:38,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:38,087 INFO L93 Difference]: Finished difference Result 3277 states and 9055 transitions. [2022-03-03 17:54:38,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-03 17:54:38,088 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:54:38,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:38,093 INFO L225 Difference]: With dead ends: 3277 [2022-03-03 17:54:38,093 INFO L226 Difference]: Without dead ends: 3130 [2022-03-03 17:54:38,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1444 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=753, Invalid=4359, Unknown=0, NotChecked=0, Total=5112 [2022-03-03 17:54:38,094 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 394 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:38,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 2910 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:54:38,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3130 states. [2022-03-03 17:54:38,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3130 to 2269. [2022-03-03 17:54:38,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2269 states, 2268 states have (on average 2.7874779541446206) internal successors, (6322), 2268 states have internal predecessors, (6322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:38,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 6322 transitions. [2022-03-03 17:54:38,131 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 6322 transitions. Word has length 70 [2022-03-03 17:54:38,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:38,131 INFO L470 AbstractCegarLoop]: Abstraction has 2269 states and 6322 transitions. [2022-03-03 17:54:38,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:38,131 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 6322 transitions. [2022-03-03 17:54:38,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:54:38,133 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:38,133 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] [2022-03-03 17:54:38,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-03-03 17:54:38,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:38,334 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:38,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:38,334 INFO L85 PathProgramCache]: Analyzing trace with hash -424984627, now seen corresponding path program 50 times [2022-03-03 17:54:38,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:38,335 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047177330] [2022-03-03 17:54:38,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:38,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:38,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:38,464 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:38,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047177330] [2022-03-03 17:54:38,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047177330] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:54:38,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273274724] [2022-03-03 17:54:38,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:54:38,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:38,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:54:38,465 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:54:38,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-03 17:54:38,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:54:38,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:54:38,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:54:38,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:54:38,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:38,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:54:39,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:39,313 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273274724] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:54:39,314 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:54:39,314 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:54:39,314 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407953538] [2022-03-03 17:54:39,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:54:39,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:54:39,314 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:39,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:54:39,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:54:39,315 INFO L87 Difference]: Start difference. First operand 2269 states and 6322 transitions. Second operand has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:40,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:40,518 INFO L93 Difference]: Finished difference Result 3297 states and 9110 transitions. [2022-03-03 17:54:40,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-03 17:54:40,518 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:54:40,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:40,524 INFO L225 Difference]: With dead ends: 3297 [2022-03-03 17:54:40,524 INFO L226 Difference]: Without dead ends: 3222 [2022-03-03 17:54:40,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=802, Invalid=4454, Unknown=0, NotChecked=0, Total=5256 [2022-03-03 17:54:40,525 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 428 mSDsluCounter, 2161 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 2208 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:40,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 2208 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:54:40,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2022-03-03 17:54:40,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 2273. [2022-03-03 17:54:40,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 2272 states have (on average 2.787411971830986) internal successors, (6333), 2272 states have internal predecessors, (6333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:40,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 6333 transitions. [2022-03-03 17:54:40,555 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 6333 transitions. Word has length 70 [2022-03-03 17:54:40,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:40,556 INFO L470 AbstractCegarLoop]: Abstraction has 2273 states and 6333 transitions. [2022-03-03 17:54:40,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:40,556 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 6333 transitions. [2022-03-03 17:54:40,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:54:40,558 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:40,558 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] [2022-03-03 17:54:40,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-03 17:54:40,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2022-03-03 17:54:40,759 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:40,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:40,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1523233091, now seen corresponding path program 51 times [2022-03-03 17:54:40,759 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:40,759 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922551925] [2022-03-03 17:54:40,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:40,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:40,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:40,872 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:40,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922551925] [2022-03-03 17:54:40,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922551925] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:54:40,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63765792] [2022-03-03 17:54:40,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:54:40,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:40,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:54:40,874 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:54:40,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-03 17:54:40,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:54:40,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:54:40,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:54:40,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:54:41,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:41,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:54:41,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:41,752 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63765792] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:54:41,752 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:54:41,752 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:54:41,752 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352362622] [2022-03-03 17:54:41,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:54:41,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:54:41,752 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:41,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:54:41,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=992, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:54:41,753 INFO L87 Difference]: Start difference. First operand 2273 states and 6333 transitions. Second operand has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:44,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:44,349 INFO L93 Difference]: Finished difference Result 3789 states and 10531 transitions. [2022-03-03 17:54:44,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-03-03 17:54:44,350 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:54:44,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:44,355 INFO L225 Difference]: With dead ends: 3789 [2022-03-03 17:54:44,355 INFO L226 Difference]: Without dead ends: 3714 [2022-03-03 17:54:44,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3506 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1972, Invalid=9158, Unknown=0, NotChecked=0, Total=11130 [2022-03-03 17:54:44,356 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 507 mSDsluCounter, 2311 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:44,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [507 Valid, 2348 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:54:44,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2022-03-03 17:54:44,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 2297. [2022-03-03 17:54:44,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2297 states, 2296 states have (on average 2.7905052264808363) internal successors, (6407), 2296 states have internal predecessors, (6407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:44,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2297 states to 2297 states and 6407 transitions. [2022-03-03 17:54:44,385 INFO L78 Accepts]: Start accepts. Automaton has 2297 states and 6407 transitions. Word has length 70 [2022-03-03 17:54:44,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:44,385 INFO L470 AbstractCegarLoop]: Abstraction has 2297 states and 6407 transitions. [2022-03-03 17:54:44,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:44,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2297 states and 6407 transitions. [2022-03-03 17:54:44,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:54:44,388 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:44,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:44,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-03-03 17:54:44,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:44,589 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:44,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:44,589 INFO L85 PathProgramCache]: Analyzing trace with hash 719292939, now seen corresponding path program 52 times [2022-03-03 17:54:44,589 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:44,589 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868791684] [2022-03-03 17:54:44,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:44,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:44,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:44,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:44,717 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:44,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868791684] [2022-03-03 17:54:44,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868791684] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:54:44,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510491071] [2022-03-03 17:54:44,718 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:54:44,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:44,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:54:44,719 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:54:44,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-03 17:54:44,799 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:54:44,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:54:44,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-03 17:54:44,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:54:45,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:45,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:54:45,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:45,424 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510491071] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:54:45,424 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:54:45,424 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 29 [2022-03-03 17:54:45,424 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960174920] [2022-03-03 17:54:45,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:54:45,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-03 17:54:45,425 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:45,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-03 17:54:45,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2022-03-03 17:54:45,425 INFO L87 Difference]: Start difference. First operand 2297 states and 6407 transitions. Second operand has 29 states, 29 states have (on average 3.586206896551724) internal successors, (104), 29 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:46,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:46,694 INFO L93 Difference]: Finished difference Result 3673 states and 9986 transitions. [2022-03-03 17:54:46,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 17:54:46,695 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.586206896551724) internal successors, (104), 29 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:54:46,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:46,700 INFO L225 Difference]: With dead ends: 3673 [2022-03-03 17:54:46,700 INFO L226 Difference]: Without dead ends: 3514 [2022-03-03 17:54:46,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=621, Invalid=3411, Unknown=0, NotChecked=0, Total=4032 [2022-03-03 17:54:46,701 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 437 mSDsluCounter, 1870 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:46,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 1924 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:54:46,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3514 states. [2022-03-03 17:54:46,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3514 to 2361. [2022-03-03 17:54:46,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2361 states, 2360 states have (on average 2.791101694915254) internal successors, (6587), 2360 states have internal predecessors, (6587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:46,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2361 states to 2361 states and 6587 transitions. [2022-03-03 17:54:46,734 INFO L78 Accepts]: Start accepts. Automaton has 2361 states and 6587 transitions. Word has length 70 [2022-03-03 17:54:46,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:46,734 INFO L470 AbstractCegarLoop]: Abstraction has 2361 states and 6587 transitions. [2022-03-03 17:54:46,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.586206896551724) internal successors, (104), 29 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:46,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2361 states and 6587 transitions. [2022-03-03 17:54:46,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:54:46,737 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:46,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:46,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-03-03 17:54:46,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2022-03-03 17:54:46,953 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:46,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:46,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1639889571, now seen corresponding path program 53 times [2022-03-03 17:54:46,954 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:46,954 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976434248] [2022-03-03 17:54:46,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:46,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:47,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:47,066 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:47,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976434248] [2022-03-03 17:54:47,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976434248] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:54:47,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760427834] [2022-03-03 17:54:47,066 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:54:47,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:47,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:54:47,067 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:54:47,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-03 17:54:47,138 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:54:47,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:54:47,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:54:47,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:54:47,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:47,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:54:47,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:47,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760427834] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:54:47,925 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:54:47,925 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-03-03 17:54:47,925 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63584537] [2022-03-03 17:54:47,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:54:47,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-03 17:54:47,926 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:47,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-03 17:54:47,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1052, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 17:54:47,926 INFO L87 Difference]: Start difference. First operand 2361 states and 6587 transitions. Second operand has 35 states, 35 states have (on average 3.342857142857143) internal successors, (117), 35 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:50,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:50,067 INFO L93 Difference]: Finished difference Result 4433 states and 12291 transitions. [2022-03-03 17:54:50,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-03 17:54:50,067 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.342857142857143) internal successors, (117), 35 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:54:50,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:50,073 INFO L225 Difference]: With dead ends: 4433 [2022-03-03 17:54:50,073 INFO L226 Difference]: Without dead ends: 4295 [2022-03-03 17:54:50,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2662 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1255, Invalid=7675, Unknown=0, NotChecked=0, Total=8930 [2022-03-03 17:54:50,074 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 517 mSDsluCounter, 2847 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:50,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 2877 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:54:50,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4295 states. [2022-03-03 17:54:50,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4295 to 2541. [2022-03-03 17:54:50,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 2540 states have (on average 2.8039370078740156) internal successors, (7122), 2540 states have internal predecessors, (7122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:50,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 7122 transitions. [2022-03-03 17:54:50,110 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 7122 transitions. Word has length 70 [2022-03-03 17:54:50,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:50,110 INFO L470 AbstractCegarLoop]: Abstraction has 2541 states and 7122 transitions. [2022-03-03 17:54:50,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.342857142857143) internal successors, (117), 35 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:50,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 7122 transitions. [2022-03-03 17:54:50,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:54:50,113 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:50,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:50,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-03-03 17:54:50,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:50,314 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:50,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:50,314 INFO L85 PathProgramCache]: Analyzing trace with hash 603585821, now seen corresponding path program 54 times [2022-03-03 17:54:50,314 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:50,315 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554624660] [2022-03-03 17:54:50,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:50,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:50,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:50,433 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:50,433 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554624660] [2022-03-03 17:54:50,433 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554624660] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:54:50,434 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834493884] [2022-03-03 17:54:50,434 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:54:50,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:50,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:54:50,435 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:54:50,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-03 17:54:50,507 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:54:50,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:54:50,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:54:50,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:54:50,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:50,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:54:51,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:51,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834493884] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:54:51,276 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:54:51,276 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-03-03 17:54:51,276 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464605042] [2022-03-03 17:54:51,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:54:51,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:54:51,276 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:51,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:54:51,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=801, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:54:51,277 INFO L87 Difference]: Start difference. First operand 2541 states and 7122 transitions. Second operand has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:55,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:55,321 INFO L93 Difference]: Finished difference Result 5151 states and 14441 transitions. [2022-03-03 17:54:55,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-03-03 17:54:55,321 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:54:55,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:55,328 INFO L225 Difference]: With dead ends: 5151 [2022-03-03 17:54:55,328 INFO L226 Difference]: Without dead ends: 5076 [2022-03-03 17:54:55,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6235 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2496, Invalid=14796, Unknown=0, NotChecked=0, Total=17292 [2022-03-03 17:54:55,329 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 696 mSDsluCounter, 2552 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 2631 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:55,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 2631 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:54:55,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5076 states. [2022-03-03 17:54:55,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5076 to 2677. [2022-03-03 17:54:55,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2677 states, 2676 states have (on average 2.828101644245142) internal successors, (7568), 2676 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:55,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2677 states to 2677 states and 7568 transitions. [2022-03-03 17:54:55,371 INFO L78 Accepts]: Start accepts. Automaton has 2677 states and 7568 transitions. Word has length 70 [2022-03-03 17:54:55,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:55,371 INFO L470 AbstractCegarLoop]: Abstraction has 2677 states and 7568 transitions. [2022-03-03 17:54:55,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:55,371 INFO L276 IsEmpty]: Start isEmpty. Operand 2677 states and 7568 transitions. [2022-03-03 17:54:55,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:54:55,375 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:55,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:55,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-03-03 17:54:55,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:55,587 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:55,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:55,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1601492827, now seen corresponding path program 55 times [2022-03-03 17:54:55,588 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:55,588 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117810807] [2022-03-03 17:54:55,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:55,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:55,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:55,729 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:55,729 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117810807] [2022-03-03 17:54:55,729 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117810807] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:54:55,729 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348733677] [2022-03-03 17:54:55,729 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:54:55,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:55,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:54:55,730 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:54:55,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-03 17:54:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:55,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:54:55,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:54:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:56,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:54:56,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:56,556 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348733677] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:54:56,557 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:54:56,557 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-03-03 17:54:56,557 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937570297] [2022-03-03 17:54:56,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:54:56,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:54:56,557 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:56,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:54:56,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:54:56,557 INFO L87 Difference]: Start difference. First operand 2677 states and 7568 transitions. Second operand has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:59,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:59,455 INFO L93 Difference]: Finished difference Result 5030 states and 14106 transitions. [2022-03-03 17:54:59,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-03 17:54:59,455 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:54:59,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:59,463 INFO L225 Difference]: With dead ends: 5030 [2022-03-03 17:54:59,463 INFO L226 Difference]: Without dead ends: 4941 [2022-03-03 17:54:59,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3617 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1555, Invalid=9575, Unknown=0, NotChecked=0, Total=11130 [2022-03-03 17:54:59,479 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 652 mSDsluCounter, 2478 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:59,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [652 Valid, 2548 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:54:59,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4941 states. [2022-03-03 17:54:59,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4941 to 3061. [2022-03-03 17:54:59,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3061 states, 3060 states have (on average 2.8705882352941177) internal successors, (8784), 3060 states have internal predecessors, (8784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:59,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3061 states to 3061 states and 8784 transitions. [2022-03-03 17:54:59,530 INFO L78 Accepts]: Start accepts. Automaton has 3061 states and 8784 transitions. Word has length 70 [2022-03-03 17:54:59,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:59,530 INFO L470 AbstractCegarLoop]: Abstraction has 3061 states and 8784 transitions. [2022-03-03 17:54:59,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:54:59,530 INFO L276 IsEmpty]: Start isEmpty. Operand 3061 states and 8784 transitions. [2022-03-03 17:54:59,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:54:59,534 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:59,534 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:54:59,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-03-03 17:54:59,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:59,736 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:59,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:59,736 INFO L85 PathProgramCache]: Analyzing trace with hash 541641107, now seen corresponding path program 56 times [2022-03-03 17:54:59,736 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:59,736 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119802075] [2022-03-03 17:54:59,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:59,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:59,857 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:59,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119802075] [2022-03-03 17:54:59,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119802075] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:54:59,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315414888] [2022-03-03 17:54:59,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:54:59,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:59,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:54:59,860 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:54:59,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-03 17:54:59,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:54:59,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:54:59,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:54:59,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:55:00,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:00,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:55:00,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:00,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315414888] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:55:00,709 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:55:00,709 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-03-03 17:55:00,709 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995650636] [2022-03-03 17:55:00,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:55:00,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:55:00,709 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:00,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:55:00,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:55:00,710 INFO L87 Difference]: Start difference. First operand 3061 states and 8784 transitions. Second operand has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 31 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:06,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:06,314 INFO L93 Difference]: Finished difference Result 5152 states and 14487 transitions. [2022-03-03 17:55:06,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-03-03 17:55:06,314 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 31 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:55:06,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:06,322 INFO L225 Difference]: With dead ends: 5152 [2022-03-03 17:55:06,323 INFO L226 Difference]: Without dead ends: 5077 [2022-03-03 17:55:06,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8367 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=3445, Invalid=19205, Unknown=0, NotChecked=0, Total=22650 [2022-03-03 17:55:06,324 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 610 mSDsluCounter, 3282 mSDsCounter, 0 mSdLazyCounter, 1844 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 3333 SdHoareTripleChecker+Invalid, 1950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:06,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [610 Valid, 3333 Invalid, 1950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1844 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:55:06,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5077 states. [2022-03-03 17:55:06,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5077 to 3069. [2022-03-03 17:55:06,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3069 states, 3068 states have (on average 2.8715775749674055) internal successors, (8810), 3068 states have internal predecessors, (8810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:06,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3069 states to 3069 states and 8810 transitions. [2022-03-03 17:55:06,381 INFO L78 Accepts]: Start accepts. Automaton has 3069 states and 8810 transitions. Word has length 70 [2022-03-03 17:55:06,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:06,381 INFO L470 AbstractCegarLoop]: Abstraction has 3069 states and 8810 transitions. [2022-03-03 17:55:06,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 31 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:06,382 INFO L276 IsEmpty]: Start isEmpty. Operand 3069 states and 8810 transitions. [2022-03-03 17:55:06,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:55:06,385 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:06,385 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:06,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-03-03 17:55:06,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:06,586 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:06,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:06,586 INFO L85 PathProgramCache]: Analyzing trace with hash -494662643, now seen corresponding path program 57 times [2022-03-03 17:55:06,586 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:06,586 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784742074] [2022-03-03 17:55:06,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:06,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:06,721 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:06,721 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784742074] [2022-03-03 17:55:06,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784742074] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:55:06,722 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155594275] [2022-03-03 17:55:06,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:55:06,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:06,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:55:06,723 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:55:06,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-03 17:55:06,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:55:06,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:55:06,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:55:06,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:55:07,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:07,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:55:07,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:07,576 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155594275] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:55:07,576 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:55:07,576 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-03-03 17:55:07,576 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587276620] [2022-03-03 17:55:07,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:55:07,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:55:07,577 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:07,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:55:07,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=813, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:55:07,577 INFO L87 Difference]: Start difference. First operand 3069 states and 8810 transitions. Second operand has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:14,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:14,115 INFO L93 Difference]: Finished difference Result 5557 states and 15617 transitions. [2022-03-03 17:55:14,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-03-03 17:55:14,116 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:55:14,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:14,124 INFO L225 Difference]: With dead ends: 5557 [2022-03-03 17:55:14,124 INFO L226 Difference]: Without dead ends: 5482 [2022-03-03 17:55:14,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11280 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=4217, Invalid=25195, Unknown=0, NotChecked=0, Total=29412 [2022-03-03 17:55:14,126 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 849 mSDsluCounter, 3059 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:14,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [849 Valid, 3130 Invalid, 1942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1776 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:55:14,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5482 states. [2022-03-03 17:55:14,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5482 to 3109. [2022-03-03 17:55:14,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3109 states, 3108 states have (on average 2.873873873873874) internal successors, (8932), 3108 states have internal predecessors, (8932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:14,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 8932 transitions. [2022-03-03 17:55:14,174 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 8932 transitions. Word has length 70 [2022-03-03 17:55:14,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:14,175 INFO L470 AbstractCegarLoop]: Abstraction has 3109 states and 8932 transitions. [2022-03-03 17:55:14,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:14,175 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 8932 transitions. [2022-03-03 17:55:14,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:55:14,178 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:14,178 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] [2022-03-03 17:55:14,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-03-03 17:55:14,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-03-03 17:55:14,379 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:14,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:14,379 INFO L85 PathProgramCache]: Analyzing trace with hash 503244363, now seen corresponding path program 58 times [2022-03-03 17:55:14,379 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:14,379 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841068488] [2022-03-03 17:55:14,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:14,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:14,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:14,526 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:14,526 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841068488] [2022-03-03 17:55:14,526 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841068488] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:55:14,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004825578] [2022-03-03 17:55:14,527 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:55:14,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:14,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:55:14,528 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:55:14,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-03 17:55:14,604 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:55:14,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:55:14,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-03 17:55:14,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:55:14,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:14,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:55:15,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:15,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004825578] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:55:15,221 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:55:15,221 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 29 [2022-03-03 17:55:15,221 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229498994] [2022-03-03 17:55:15,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:55:15,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-03 17:55:15,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:15,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-03 17:55:15,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2022-03-03 17:55:15,221 INFO L87 Difference]: Start difference. First operand 3109 states and 8932 transitions. Second operand has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:18,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:18,584 INFO L93 Difference]: Finished difference Result 6141 states and 17233 transitions. [2022-03-03 17:55:18,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-03-03 17:55:18,584 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:55:18,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:18,593 INFO L225 Difference]: With dead ends: 6141 [2022-03-03 17:55:18,593 INFO L226 Difference]: Without dead ends: 6011 [2022-03-03 17:55:18,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6530 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2733, Invalid=15357, Unknown=0, NotChecked=0, Total=18090 [2022-03-03 17:55:18,594 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 760 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 2750 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:18,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 2750 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:55:18,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2022-03-03 17:55:18,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 3721. [2022-03-03 17:55:18,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3721 states, 3720 states have (on average 2.9115591397849463) internal successors, (10831), 3720 states have internal predecessors, (10831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:18,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3721 states to 3721 states and 10831 transitions. [2022-03-03 17:55:18,649 INFO L78 Accepts]: Start accepts. Automaton has 3721 states and 10831 transitions. Word has length 70 [2022-03-03 17:55:18,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:18,649 INFO L470 AbstractCegarLoop]: Abstraction has 3721 states and 10831 transitions. [2022-03-03 17:55:18,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:18,649 INFO L276 IsEmpty]: Start isEmpty. Operand 3721 states and 10831 transitions. [2022-03-03 17:55:18,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:55:18,657 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:18,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:18,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-03-03 17:55:18,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:18,857 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:18,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:18,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1460351023, now seen corresponding path program 59 times [2022-03-03 17:55:18,858 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:18,858 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060672413] [2022-03-03 17:55:18,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:18,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:18,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:18,993 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:18,993 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060672413] [2022-03-03 17:55:18,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060672413] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:55:18,993 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633752223] [2022-03-03 17:55:18,993 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:55:18,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:18,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:55:18,995 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:55:18,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-03 17:55:19,070 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:55:19,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:55:19,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 17:55:19,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:55:19,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:19,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:55:19,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:19,675 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633752223] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:55:19,675 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:55:19,675 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:55:19,675 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84857029] [2022-03-03 17:55:19,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:55:19,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:55:19,676 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:19,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:55:19,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:55:19,676 INFO L87 Difference]: Start difference. First operand 3721 states and 10831 transitions. Second operand has 33 states, 33 states have (on average 3.242424242424242) internal successors, (107), 33 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:21,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:21,958 INFO L93 Difference]: Finished difference Result 5228 states and 15055 transitions. [2022-03-03 17:55:21,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-03-03 17:55:21,959 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.242424242424242) internal successors, (107), 33 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:55:21,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:21,967 INFO L225 Difference]: With dead ends: 5228 [2022-03-03 17:55:21,967 INFO L226 Difference]: Without dead ends: 5121 [2022-03-03 17:55:21,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6140 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2789, Invalid=15033, Unknown=0, NotChecked=0, Total=17822 [2022-03-03 17:55:21,969 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 756 mSDsluCounter, 2702 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 2779 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:21,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 2779 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:55:21,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5121 states. [2022-03-03 17:55:22,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5121 to 3585. [2022-03-03 17:55:22,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3584 states have (on average 2.914341517857143) internal successors, (10445), 3584 states have internal predecessors, (10445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:22,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 10445 transitions. [2022-03-03 17:55:22,033 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 10445 transitions. Word has length 70 [2022-03-03 17:55:22,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:22,033 INFO L470 AbstractCegarLoop]: Abstraction has 3585 states and 10445 transitions. [2022-03-03 17:55:22,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.242424242424242) internal successors, (107), 33 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:22,033 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 10445 transitions. [2022-03-03 17:55:22,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:55:22,039 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:22,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:22,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-03-03 17:55:22,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:22,243 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:22,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:22,244 INFO L85 PathProgramCache]: Analyzing trace with hash -462444017, now seen corresponding path program 60 times [2022-03-03 17:55:22,244 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:22,244 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695268412] [2022-03-03 17:55:22,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:22,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:22,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:22,498 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:22,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695268412] [2022-03-03 17:55:22,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695268412] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:55:22,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367683914] [2022-03-03 17:55:22,499 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:55:22,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:22,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:55:22,500 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:55:22,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-03 17:55:22,576 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:55:22,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:55:22,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:55:22,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:55:22,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:22,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:55:23,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:23,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367683914] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:55:23,328 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:55:23,328 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-03-03 17:55:23,328 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142558493] [2022-03-03 17:55:23,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:55:23,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:55:23,328 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:23,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:55:23,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:55:23,329 INFO L87 Difference]: Start difference. First operand 3585 states and 10445 transitions. Second operand has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:29,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:29,703 INFO L93 Difference]: Finished difference Result 7128 states and 20475 transitions. [2022-03-03 17:55:29,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-03-03 17:55:29,704 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:55:29,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:29,715 INFO L225 Difference]: With dead ends: 7128 [2022-03-03 17:55:29,715 INFO L226 Difference]: Without dead ends: 7039 [2022-03-03 17:55:29,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11748 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=4597, Invalid=26203, Unknown=0, NotChecked=0, Total=30800 [2022-03-03 17:55:29,717 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 1032 mSDsluCounter, 2211 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 2319 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:29,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1032 Valid, 2319 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:55:29,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7039 states. [2022-03-03 17:55:29,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7039 to 4073. [2022-03-03 17:55:29,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4073 states, 4072 states have (on average 2.951620825147348) internal successors, (12019), 4072 states have internal predecessors, (12019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:29,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4073 states to 4073 states and 12019 transitions. [2022-03-03 17:55:29,805 INFO L78 Accepts]: Start accepts. Automaton has 4073 states and 12019 transitions. Word has length 70 [2022-03-03 17:55:29,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:29,805 INFO L470 AbstractCegarLoop]: Abstraction has 4073 states and 12019 transitions. [2022-03-03 17:55:29,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:29,806 INFO L276 IsEmpty]: Start isEmpty. Operand 4073 states and 12019 transitions. [2022-03-03 17:55:29,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:55:29,811 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:29,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:29,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-03-03 17:55:30,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:30,012 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:30,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:30,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1519589779, now seen corresponding path program 61 times [2022-03-03 17:55:30,012 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:30,012 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223029365] [2022-03-03 17:55:30,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:30,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:30,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:30,122 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:30,122 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223029365] [2022-03-03 17:55:30,122 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223029365] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:55:30,122 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239933065] [2022-03-03 17:55:30,122 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:55:30,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:30,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:55:30,123 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:55:30,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-03 17:55:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:30,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:55:30,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:55:30,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:30,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:55:30,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:30,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239933065] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:55:30,954 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:55:30,954 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-03-03 17:55:30,954 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104595303] [2022-03-03 17:55:30,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:55:30,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:55:30,954 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:30,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:55:30,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:55:30,970 INFO L87 Difference]: Start difference. First operand 4073 states and 12019 transitions. Second operand has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:36,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:36,855 INFO L93 Difference]: Finished difference Result 7825 states and 22614 transitions. [2022-03-03 17:55:36,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-03-03 17:55:36,855 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:55:36,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:36,867 INFO L225 Difference]: With dead ends: 7825 [2022-03-03 17:55:36,867 INFO L226 Difference]: Without dead ends: 7649 [2022-03-03 17:55:36,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10620 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=4477, Invalid=22255, Unknown=0, NotChecked=0, Total=26732 [2022-03-03 17:55:36,869 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 1213 mSDsluCounter, 2688 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:36,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1213 Valid, 2744 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:55:36,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7649 states. [2022-03-03 17:55:36,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7649 to 4581. [2022-03-03 17:55:36,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4581 states, 4580 states have (on average 2.992139737991266) internal successors, (13704), 4580 states have internal predecessors, (13704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:36,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4581 states to 4581 states and 13704 transitions. [2022-03-03 17:55:36,948 INFO L78 Accepts]: Start accepts. Automaton has 4581 states and 13704 transitions. Word has length 70 [2022-03-03 17:55:36,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:36,948 INFO L470 AbstractCegarLoop]: Abstraction has 4581 states and 13704 transitions. [2022-03-03 17:55:36,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:36,948 INFO L276 IsEmpty]: Start isEmpty. Operand 4581 states and 13704 transitions. [2022-03-03 17:55:36,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:55:36,953 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:36,954 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] [2022-03-03 17:55:36,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-03-03 17:55:37,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:37,154 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:37,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:37,155 INFO L85 PathProgramCache]: Analyzing trace with hash -570575051, now seen corresponding path program 62 times [2022-03-03 17:55:37,155 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:37,155 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676548879] [2022-03-03 17:55:37,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:37,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:37,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:37,285 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:37,285 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676548879] [2022-03-03 17:55:37,285 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676548879] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:55:37,285 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127833736] [2022-03-03 17:55:37,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:55:37,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:37,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:55:37,286 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:55:37,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-03 17:55:37,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:55:37,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:55:37,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:55:37,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:55:37,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:37,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:55:38,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:38,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127833736] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:55:38,085 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:55:38,085 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 29 [2022-03-03 17:55:38,085 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916794879] [2022-03-03 17:55:38,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:55:38,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-03 17:55:38,086 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:38,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-03 17:55:38,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=707, Unknown=0, NotChecked=0, Total=812 [2022-03-03 17:55:38,086 INFO L87 Difference]: Start difference. First operand 4581 states and 13704 transitions. Second operand has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:40,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:40,260 INFO L93 Difference]: Finished difference Result 5971 states and 17267 transitions. [2022-03-03 17:55:40,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-03 17:55:40,260 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:55:40,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:40,269 INFO L225 Difference]: With dead ends: 5971 [2022-03-03 17:55:40,269 INFO L226 Difference]: Without dead ends: 5812 [2022-03-03 17:55:40,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2147 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=925, Invalid=6385, Unknown=0, NotChecked=0, Total=7310 [2022-03-03 17:55:40,270 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 681 mSDsluCounter, 2422 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:40,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 2503 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:55:40,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2022-03-03 17:55:40,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 4725. [2022-03-03 17:55:40,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4725 states, 4724 states have (on average 2.988145639288738) internal successors, (14116), 4724 states have internal predecessors, (14116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:40,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4725 states to 4725 states and 14116 transitions. [2022-03-03 17:55:40,344 INFO L78 Accepts]: Start accepts. Automaton has 4725 states and 14116 transitions. Word has length 70 [2022-03-03 17:55:40,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:40,344 INFO L470 AbstractCegarLoop]: Abstraction has 4725 states and 14116 transitions. [2022-03-03 17:55:40,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:40,345 INFO L276 IsEmpty]: Start isEmpty. Operand 4725 states and 14116 transitions. [2022-03-03 17:55:40,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:55:40,351 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:40,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:40,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-03-03 17:55:40,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:40,551 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:40,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:40,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1033019655, now seen corresponding path program 63 times [2022-03-03 17:55:40,552 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:40,552 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344641455] [2022-03-03 17:55:40,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:40,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:40,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:40,686 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:40,686 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344641455] [2022-03-03 17:55:40,686 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344641455] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:55:40,686 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170345769] [2022-03-03 17:55:40,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:55:40,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:40,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:55:40,687 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:55:40,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-03 17:55:40,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:55:40,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:55:40,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:55:40,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:55:41,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:41,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:55:41,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:41,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170345769] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:55:41,567 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:55:41,567 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 30 [2022-03-03 17:55:41,567 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326169417] [2022-03-03 17:55:41,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:55:41,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 17:55:41,568 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:41,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 17:55:41,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2022-03-03 17:55:41,568 INFO L87 Difference]: Start difference. First operand 4725 states and 14116 transitions. Second operand has 30 states, 30 states have (on average 3.4) internal successors, (102), 30 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:43,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:43,974 INFO L93 Difference]: Finished difference Result 5987 states and 17326 transitions. [2022-03-03 17:55:43,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-03-03 17:55:43,974 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.4) internal successors, (102), 30 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:55:43,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:43,982 INFO L225 Difference]: With dead ends: 5987 [2022-03-03 17:55:43,982 INFO L226 Difference]: Without dead ends: 5789 [2022-03-03 17:55:43,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 121 SyntacticMatches, 5 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2878 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1147, Invalid=7783, Unknown=0, NotChecked=0, Total=8930 [2022-03-03 17:55:43,983 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 578 mSDsluCounter, 2485 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:43,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 2548 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:55:43,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5789 states. [2022-03-03 17:55:44,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5789 to 4749. [2022-03-03 17:55:44,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4749 states, 4748 states have (on average 2.9869418702611625) internal successors, (14182), 4748 states have internal predecessors, (14182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:44,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4749 states to 4749 states and 14182 transitions. [2022-03-03 17:55:44,047 INFO L78 Accepts]: Start accepts. Automaton has 4749 states and 14182 transitions. Word has length 70 [2022-03-03 17:55:44,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:44,048 INFO L470 AbstractCegarLoop]: Abstraction has 4749 states and 14182 transitions. [2022-03-03 17:55:44,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.4) internal successors, (102), 30 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:44,048 INFO L276 IsEmpty]: Start isEmpty. Operand 4749 states and 14182 transitions. [2022-03-03 17:55:44,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:55:44,053 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:44,054 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, 1, 1, 1, 1] [2022-03-03 17:55:44,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-03-03 17:55:44,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2022-03-03 17:55:44,254 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:44,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:44,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1148726773, now seen corresponding path program 64 times [2022-03-03 17:55:44,254 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:44,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779874746] [2022-03-03 17:55:44,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:44,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:44,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:44,372 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:44,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779874746] [2022-03-03 17:55:44,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779874746] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:55:44,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585650244] [2022-03-03 17:55:44,372 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:55:44,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:44,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:55:44,373 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:55:44,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-03 17:55:44,451 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:55:44,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:55:44,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-03 17:55:44,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:55:44,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:44,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:55:45,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:45,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585650244] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:55:45,057 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:55:45,057 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 28 [2022-03-03 17:55:45,057 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536815455] [2022-03-03 17:55:45,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:55:45,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 17:55:45,057 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:45,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 17:55:45,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2022-03-03 17:55:45,058 INFO L87 Difference]: Start difference. First operand 4749 states and 14182 transitions. Second operand has 28 states, 28 states have (on average 3.607142857142857) internal successors, (101), 28 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:46,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:46,081 INFO L93 Difference]: Finished difference Result 5657 states and 16347 transitions. [2022-03-03 17:55:46,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 17:55:46,082 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.607142857142857) internal successors, (101), 28 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:55:46,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:46,090 INFO L225 Difference]: With dead ends: 5657 [2022-03-03 17:55:46,090 INFO L226 Difference]: Without dead ends: 5558 [2022-03-03 17:55:46,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 123 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=562, Invalid=2518, Unknown=0, NotChecked=0, Total=3080 [2022-03-03 17:55:46,091 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 504 mSDsluCounter, 2033 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:46,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 2081 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:55:46,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5558 states. [2022-03-03 17:55:46,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5558 to 4749. [2022-03-03 17:55:46,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4749 states, 4748 states have (on average 2.98441449031171) internal successors, (14170), 4748 states have internal predecessors, (14170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:46,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4749 states to 4749 states and 14170 transitions. [2022-03-03 17:55:46,163 INFO L78 Accepts]: Start accepts. Automaton has 4749 states and 14170 transitions. Word has length 70 [2022-03-03 17:55:46,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:46,163 INFO L470 AbstractCegarLoop]: Abstraction has 4749 states and 14170 transitions. [2022-03-03 17:55:46,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.607142857142857) internal successors, (101), 28 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:46,163 INFO L276 IsEmpty]: Start isEmpty. Operand 4749 states and 14170 transitions. [2022-03-03 17:55:46,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:55:46,169 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:46,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:46,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-03-03 17:55:46,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:46,370 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:46,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:46,370 INFO L85 PathProgramCache]: Analyzing trace with hash -150819767, now seen corresponding path program 65 times [2022-03-03 17:55:46,370 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:46,370 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081557586] [2022-03-03 17:55:46,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:46,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:46,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:46,505 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:46,506 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081557586] [2022-03-03 17:55:46,506 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081557586] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:55:46,506 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418934731] [2022-03-03 17:55:46,506 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:55:46,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:46,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:55:46,507 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:55:46,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-03 17:55:46,598 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:55:46,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:55:46,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 17:55:46,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:55:46,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:46,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-03 17:55:46,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418934731] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:55:46,870 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-03 17:55:46,870 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 25 [2022-03-03 17:55:46,870 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096674885] [2022-03-03 17:55:46,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:55:46,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 17:55:46,871 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:46,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 17:55:46,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:55:46,871 INFO L87 Difference]: Start difference. First operand 4749 states and 14170 transitions. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:47,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:47,019 INFO L93 Difference]: Finished difference Result 4859 states and 14422 transitions. [2022-03-03 17:55:47,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 17:55:47,019 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:55:47,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:47,027 INFO L225 Difference]: With dead ends: 4859 [2022-03-03 17:55:47,027 INFO L226 Difference]: Without dead ends: 4781 [2022-03-03 17:55:47,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:55:47,028 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 126 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:47,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 830 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:55:47,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4781 states. [2022-03-03 17:55:47,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4781 to 4713. [2022-03-03 17:55:47,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4713 states, 4712 states have (on average 2.9887521222410864) internal successors, (14083), 4712 states have internal predecessors, (14083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:47,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4713 states to 4713 states and 14083 transitions. [2022-03-03 17:55:47,090 INFO L78 Accepts]: Start accepts. Automaton has 4713 states and 14083 transitions. Word has length 70 [2022-03-03 17:55:47,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:47,090 INFO L470 AbstractCegarLoop]: Abstraction has 4713 states and 14083 transitions. [2022-03-03 17:55:47,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:47,091 INFO L276 IsEmpty]: Start isEmpty. Operand 4713 states and 14083 transitions. [2022-03-03 17:55:47,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:55:47,097 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:47,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:47,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-03-03 17:55:47,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2022-03-03 17:55:47,297 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:47,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:47,298 INFO L85 PathProgramCache]: Analyzing trace with hash 2046055433, now seen corresponding path program 66 times [2022-03-03 17:55:47,298 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:47,298 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128544348] [2022-03-03 17:55:47,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:47,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:47,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:47,438 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:47,438 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128544348] [2022-03-03 17:55:47,438 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128544348] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:55:47,438 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540263232] [2022-03-03 17:55:47,438 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:55:47,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:47,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:55:47,440 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:55:47,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-03 17:55:47,518 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:55:47,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:55:47,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:55:47,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:55:47,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:47,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:55:48,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:48,274 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540263232] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:55:48,274 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:55:48,274 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2022-03-03 17:55:48,274 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097492518] [2022-03-03 17:55:48,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:55:48,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:55:48,274 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:48,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:55:48,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:55:48,275 INFO L87 Difference]: Start difference. First operand 4713 states and 14083 transitions. Second operand has 32 states, 32 states have (on average 3.21875) internal successors, (103), 32 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:51,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:51,409 INFO L93 Difference]: Finished difference Result 7586 states and 22120 transitions. [2022-03-03 17:55:51,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-03-03 17:55:51,409 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.21875) internal successors, (103), 32 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:55:51,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:51,421 INFO L225 Difference]: With dead ends: 7586 [2022-03-03 17:55:51,421 INFO L226 Difference]: Without dead ends: 7511 [2022-03-03 17:55:51,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3698 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1697, Invalid=9223, Unknown=0, NotChecked=0, Total=10920 [2022-03-03 17:55:51,422 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 553 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:51,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [553 Valid, 2674 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:55:51,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7511 states. [2022-03-03 17:55:51,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7511 to 4793. [2022-03-03 17:55:51,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4793 states, 4792 states have (on average 2.9881051752921537) internal successors, (14319), 4792 states have internal predecessors, (14319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:51,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4793 states to 4793 states and 14319 transitions. [2022-03-03 17:55:51,501 INFO L78 Accepts]: Start accepts. Automaton has 4793 states and 14319 transitions. Word has length 70 [2022-03-03 17:55:51,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:51,501 INFO L470 AbstractCegarLoop]: Abstraction has 4793 states and 14319 transitions. [2022-03-03 17:55:51,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.21875) internal successors, (103), 32 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:51,501 INFO L276 IsEmpty]: Start isEmpty. Operand 4793 states and 14319 transitions. [2022-03-03 17:55:51,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:55:51,507 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:51,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:51,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-03-03 17:55:51,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2022-03-03 17:55:51,707 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:51,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:51,708 INFO L85 PathProgramCache]: Analyzing trace with hash 461084739, now seen corresponding path program 67 times [2022-03-03 17:55:51,708 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:51,708 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191048160] [2022-03-03 17:55:51,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:51,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:51,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:51,842 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:51,842 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191048160] [2022-03-03 17:55:51,842 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191048160] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:55:51,842 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828029290] [2022-03-03 17:55:51,842 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:55:51,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:51,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:55:51,843 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:55:51,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-03-03 17:55:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:51,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:55:51,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:55:52,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:52,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:55:52,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:52,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828029290] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:55:52,737 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:55:52,737 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2022-03-03 17:55:52,737 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488013442] [2022-03-03 17:55:52,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:55:52,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:55:52,738 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:52,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:55:52,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:55:52,738 INFO L87 Difference]: Start difference. First operand 4793 states and 14319 transitions. Second operand has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:55,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:55,892 INFO L93 Difference]: Finished difference Result 7564 states and 22088 transitions. [2022-03-03 17:55:55,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-03-03 17:55:55,893 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:55:55,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:55,909 INFO L225 Difference]: With dead ends: 7564 [2022-03-03 17:55:55,910 INFO L226 Difference]: Without dead ends: 7475 [2022-03-03 17:55:55,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3759 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1701, Invalid=9429, Unknown=0, NotChecked=0, Total=11130 [2022-03-03 17:55:55,911 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 522 mSDsluCounter, 3032 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:55,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 3025 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:55:55,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7475 states. [2022-03-03 17:55:55,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7475 to 4857. [2022-03-03 17:55:55,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4857 states, 4856 states have (on average 2.985790774299835) internal successors, (14499), 4856 states have internal predecessors, (14499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:55,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4857 states to 4857 states and 14499 transitions. [2022-03-03 17:55:55,999 INFO L78 Accepts]: Start accepts. Automaton has 4857 states and 14499 transitions. Word has length 70 [2022-03-03 17:55:55,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:55,999 INFO L470 AbstractCegarLoop]: Abstraction has 4857 states and 14499 transitions. [2022-03-03 17:55:55,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:55,999 INFO L276 IsEmpty]: Start isEmpty. Operand 4857 states and 14499 transitions. [2022-03-03 17:55:56,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:55:56,006 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:56,006 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] [2022-03-03 17:55:56,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-03-03 17:55:56,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2022-03-03 17:55:56,206 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:56,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:56,207 INFO L85 PathProgramCache]: Analyzing trace with hash -825524207, now seen corresponding path program 68 times [2022-03-03 17:55:56,207 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:56,207 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266057519] [2022-03-03 17:55:56,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:56,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:56,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:56,318 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:56,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266057519] [2022-03-03 17:55:56,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266057519] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:55:56,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069483313] [2022-03-03 17:55:56,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:55:56,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:56,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:55:56,319 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:55:56,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-03-03 17:55:56,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:55:56,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:55:56,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:55:56,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:55:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:56,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:55:57,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:57,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069483313] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:55:57,168 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:55:57,168 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2022-03-03 17:55:57,168 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425554869] [2022-03-03 17:55:57,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:55:57,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:55:57,168 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:57,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:55:57,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:55:57,169 INFO L87 Difference]: Start difference. First operand 4857 states and 14499 transitions. Second operand has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:01,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:01,307 INFO L93 Difference]: Finished difference Result 8098 states and 23481 transitions. [2022-03-03 17:56:01,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-03-03 17:56:01,307 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:56:01,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:01,320 INFO L225 Difference]: With dead ends: 8098 [2022-03-03 17:56:01,321 INFO L226 Difference]: Without dead ends: 7875 [2022-03-03 17:56:01,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6149 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2252, Invalid=14778, Unknown=0, NotChecked=0, Total=17030 [2022-03-03 17:56:01,322 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 710 mSDsluCounter, 3266 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 3275 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:01,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 3275 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:56:01,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7875 states. [2022-03-03 17:56:01,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7875 to 4957. [2022-03-03 17:56:01,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4957 states, 4956 states have (on average 2.986682808716707) internal successors, (14802), 4956 states have internal predecessors, (14802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:01,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4957 states to 4957 states and 14802 transitions. [2022-03-03 17:56:01,409 INFO L78 Accepts]: Start accepts. Automaton has 4957 states and 14802 transitions. Word has length 70 [2022-03-03 17:56:01,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:01,409 INFO L470 AbstractCegarLoop]: Abstraction has 4957 states and 14802 transitions. [2022-03-03 17:56:01,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:01,409 INFO L276 IsEmpty]: Start isEmpty. Operand 4957 states and 14802 transitions. [2022-03-03 17:56:01,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:56:01,416 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:01,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:01,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-03-03 17:56:01,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2022-03-03 17:56:01,619 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:01,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:01,620 INFO L85 PathProgramCache]: Analyzing trace with hash 2090402133, now seen corresponding path program 69 times [2022-03-03 17:56:01,620 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:01,620 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501445272] [2022-03-03 17:56:01,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:01,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:01,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:01,757 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:01,757 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501445272] [2022-03-03 17:56:01,757 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501445272] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:56:01,757 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767568617] [2022-03-03 17:56:01,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:56:01,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:56:01,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:56:01,758 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:56:01,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-03-03 17:56:01,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:56:01,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:56:01,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:56:01,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:56:02,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:02,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:56:02,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:02,616 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767568617] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:56:02,616 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:56:02,616 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-03-03 17:56:02,616 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387301036] [2022-03-03 17:56:02,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:56:02,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-03 17:56:02,616 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:02,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-03 17:56:02,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1060, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 17:56:02,617 INFO L87 Difference]: Start difference. First operand 4957 states and 14802 transitions. Second operand has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:04,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:04,858 INFO L93 Difference]: Finished difference Result 7085 states and 20759 transitions. [2022-03-03 17:56:04,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-03-03 17:56:04,859 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:56:04,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:04,870 INFO L225 Difference]: With dead ends: 7085 [2022-03-03 17:56:04,870 INFO L226 Difference]: Without dead ends: 6906 [2022-03-03 17:56:04,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2716 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1168, Invalid=7762, Unknown=0, NotChecked=0, Total=8930 [2022-03-03 17:56:04,871 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 500 mSDsluCounter, 2854 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:04,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 2877 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:56:04,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6906 states. [2022-03-03 17:56:04,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6906 to 5181. [2022-03-03 17:56:04,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5181 states, 5180 states have (on average 2.9818532818532817) internal successors, (15446), 5180 states have internal predecessors, (15446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:04,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5181 states to 5181 states and 15446 transitions. [2022-03-03 17:56:04,955 INFO L78 Accepts]: Start accepts. Automaton has 5181 states and 15446 transitions. Word has length 70 [2022-03-03 17:56:04,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:04,955 INFO L470 AbstractCegarLoop]: Abstraction has 5181 states and 15446 transitions. [2022-03-03 17:56:04,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:04,955 INFO L276 IsEmpty]: Start isEmpty. Operand 5181 states and 15446 transitions. [2022-03-03 17:56:04,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:56:04,962 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:04,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:04,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-03-03 17:56:05,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:56:05,162 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:05,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:05,163 INFO L85 PathProgramCache]: Analyzing trace with hash 947581475, now seen corresponding path program 70 times [2022-03-03 17:56:05,163 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:05,163 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450071479] [2022-03-03 17:56:05,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:05,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:05,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:05,277 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:05,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450071479] [2022-03-03 17:56:05,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450071479] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:56:05,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61508233] [2022-03-03 17:56:05,277 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:56:05,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:56:05,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:56:05,278 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:56:05,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-03-03 17:56:05,360 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:56:05,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:56:05,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 17:56:05,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:56:05,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:05,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:56:06,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:06,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61508233] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:56:06,030 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:56:06,030 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:56:06,030 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35306475] [2022-03-03 17:56:06,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:56:06,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:56:06,030 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:06,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:56:06,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:56:06,031 INFO L87 Difference]: Start difference. First operand 5181 states and 15446 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:08,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:08,445 INFO L93 Difference]: Finished difference Result 7732 states and 22695 transitions. [2022-03-03 17:56:08,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-03-03 17:56:08,445 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:56:08,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:08,464 INFO L225 Difference]: With dead ends: 7732 [2022-03-03 17:56:08,465 INFO L226 Difference]: Without dead ends: 7605 [2022-03-03 17:56:08,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4169 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1641, Invalid=10569, Unknown=0, NotChecked=0, Total=12210 [2022-03-03 17:56:08,466 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 681 mSDsluCounter, 2349 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:08,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 2423 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1437 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:56:08,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7605 states. [2022-03-03 17:56:08,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7605 to 5229. [2022-03-03 17:56:08,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5229 states, 5228 states have (on average 2.9820198928844683) internal successors, (15590), 5228 states have internal predecessors, (15590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:08,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5229 states to 5229 states and 15590 transitions. [2022-03-03 17:56:08,569 INFO L78 Accepts]: Start accepts. Automaton has 5229 states and 15590 transitions. Word has length 70 [2022-03-03 17:56:08,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:08,569 INFO L470 AbstractCegarLoop]: Abstraction has 5229 states and 15590 transitions. [2022-03-03 17:56:08,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:08,569 INFO L276 IsEmpty]: Start isEmpty. Operand 5229 states and 15590 transitions. [2022-03-03 17:56:08,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:56:08,576 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:08,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:08,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-03-03 17:56:08,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-03-03 17:56:08,777 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:08,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:08,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1340787411, now seen corresponding path program 71 times [2022-03-03 17:56:08,778 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:08,778 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861148184] [2022-03-03 17:56:08,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:08,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:08,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:08,898 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:08,898 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861148184] [2022-03-03 17:56:08,898 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861148184] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:56:08,898 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940680939] [2022-03-03 17:56:08,898 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:56:08,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:56:08,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:56:08,899 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:56:08,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-03-03 17:56:08,979 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:56:08,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:56:08,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 17:56:08,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:56:09,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:09,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:56:09,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:09,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940680939] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:56:09,640 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:56:09,640 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:56:09,640 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330648090] [2022-03-03 17:56:09,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:56:09,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:56:09,640 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:09,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:56:09,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:56:09,641 INFO L87 Difference]: Start difference. First operand 5229 states and 15590 transitions. Second operand has 33 states, 33 states have (on average 3.212121212121212) internal successors, (106), 33 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:10,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:10,460 INFO L93 Difference]: Finished difference Result 7120 states and 21026 transitions. [2022-03-03 17:56:10,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 17:56:10,461 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.212121212121212) internal successors, (106), 33 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:56:10,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:10,473 INFO L225 Difference]: With dead ends: 7120 [2022-03-03 17:56:10,473 INFO L226 Difference]: Without dead ends: 7057 [2022-03-03 17:56:10,474 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 [2022-03-03 17:56:10,474 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 430 mSDsluCounter, 2021 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 2082 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:10,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 2082 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:56:10,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7057 states. [2022-03-03 17:56:10,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7057 to 5293. [2022-03-03 17:56:10,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5293 states, 5292 states have (on average 2.9814814814814814) internal successors, (15778), 5292 states have internal predecessors, (15778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:10,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5293 states to 5293 states and 15778 transitions. [2022-03-03 17:56:10,556 INFO L78 Accepts]: Start accepts. Automaton has 5293 states and 15778 transitions. Word has length 70 [2022-03-03 17:56:10,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:10,556 INFO L470 AbstractCegarLoop]: Abstraction has 5293 states and 15778 transitions. [2022-03-03 17:56:10,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.212121212121212) internal successors, (106), 33 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:10,556 INFO L276 IsEmpty]: Start isEmpty. Operand 5293 states and 15778 transitions. [2022-03-03 17:56:10,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:56:10,563 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:10,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:10,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-03-03 17:56:10,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-03-03 17:56:10,763 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:10,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:10,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1369209191, now seen corresponding path program 72 times [2022-03-03 17:56:10,764 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:10,764 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741656625] [2022-03-03 17:56:10,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:10,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:10,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:10,895 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:10,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741656625] [2022-03-03 17:56:10,895 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741656625] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:56:10,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950312216] [2022-03-03 17:56:10,895 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:56:10,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:56:10,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:56:10,896 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:56:10,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-03-03 17:56:10,985 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:56:10,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:56:10,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:56:10,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:56:11,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:11,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:56:11,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:11,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950312216] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:56:11,766 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:56:11,766 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-03 17:56:11,766 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118881721] [2022-03-03 17:56:11,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:56:11,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:56:11,766 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:11,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:56:11,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=917, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:56:11,767 INFO L87 Difference]: Start difference. First operand 5293 states and 15778 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:14,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:14,378 INFO L93 Difference]: Finished difference Result 8261 states and 24206 transitions. [2022-03-03 17:56:14,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-03 17:56:14,379 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:56:14,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:14,393 INFO L225 Difference]: With dead ends: 8261 [2022-03-03 17:56:14,393 INFO L226 Difference]: Without dead ends: 8172 [2022-03-03 17:56:14,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2641 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1226, Invalid=7146, Unknown=0, NotChecked=0, Total=8372 [2022-03-03 17:56:14,394 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 436 mSDsluCounter, 2991 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 2985 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:14,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 2985 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:56:14,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8172 states. [2022-03-03 17:56:14,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8172 to 5485. [2022-03-03 17:56:14,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5485 states, 5484 states have (on average 2.977753464624362) internal successors, (16330), 5484 states have internal predecessors, (16330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:14,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5485 states to 5485 states and 16330 transitions. [2022-03-03 17:56:14,515 INFO L78 Accepts]: Start accepts. Automaton has 5485 states and 16330 transitions. Word has length 70 [2022-03-03 17:56:14,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:14,515 INFO L470 AbstractCegarLoop]: Abstraction has 5485 states and 16330 transitions. [2022-03-03 17:56:14,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:14,515 INFO L276 IsEmpty]: Start isEmpty. Operand 5485 states and 16330 transitions. [2022-03-03 17:56:14,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:56:14,522 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:14,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:14,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-03-03 17:56:14,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2022-03-03 17:56:14,724 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:14,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:14,724 INFO L85 PathProgramCache]: Analyzing trace with hash 82600245, now seen corresponding path program 73 times [2022-03-03 17:56:14,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:14,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313317853] [2022-03-03 17:56:14,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:14,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:14,873 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:14,874 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313317853] [2022-03-03 17:56:14,874 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313317853] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:56:14,874 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990381237] [2022-03-03 17:56:14,874 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:56:14,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:56:14,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:56:14,875 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:56:14,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-03-03 17:56:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:14,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:56:14,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:56:15,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:15,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:56:15,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:15,735 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990381237] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:56:15,735 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:56:15,735 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-03 17:56:15,735 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577326927] [2022-03-03 17:56:15,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:56:15,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:56:15,735 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:15,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:56:15,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=922, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:56:15,736 INFO L87 Difference]: Start difference. First operand 5485 states and 16330 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:19,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:19,022 INFO L93 Difference]: Finished difference Result 8548 states and 24902 transitions. [2022-03-03 17:56:19,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-03-03 17:56:19,023 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:56:19,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:19,037 INFO L225 Difference]: With dead ends: 8548 [2022-03-03 17:56:19,037 INFO L226 Difference]: Without dead ends: 8347 [2022-03-03 17:56:19,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3949 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1577, Invalid=10195, Unknown=0, NotChecked=0, Total=11772 [2022-03-03 17:56:19,039 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 543 mSDsluCounter, 3181 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 3176 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:19,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [543 Valid, 3176 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:56:19,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8347 states. [2022-03-03 17:56:19,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8347 to 5393. [2022-03-03 17:56:19,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5393 states, 5392 states have (on average 2.9808976261127595) internal successors, (16073), 5392 states have internal predecessors, (16073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:19,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5393 states to 5393 states and 16073 transitions. [2022-03-03 17:56:19,143 INFO L78 Accepts]: Start accepts. Automaton has 5393 states and 16073 transitions. Word has length 70 [2022-03-03 17:56:19,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:19,143 INFO L470 AbstractCegarLoop]: Abstraction has 5393 states and 16073 transitions. [2022-03-03 17:56:19,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:19,143 INFO L276 IsEmpty]: Start isEmpty. Operand 5393 states and 16073 transitions. [2022-03-03 17:56:19,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:56:19,150 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:19,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:19,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-03-03 17:56:19,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:56:19,351 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:19,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:19,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1855705927, now seen corresponding path program 74 times [2022-03-03 17:56:19,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:19,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168162238] [2022-03-03 17:56:19,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:19,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:19,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:19,467 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:19,467 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168162238] [2022-03-03 17:56:19,467 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168162238] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:56:19,467 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512975549] [2022-03-03 17:56:19,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:56:19,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:56:19,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:56:19,468 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:56:19,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-03-03 17:56:19,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:56:19,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:56:19,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:56:19,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:56:19,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:19,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:56:20,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:20,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512975549] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:56:20,318 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:56:20,318 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-03 17:56:20,318 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253005856] [2022-03-03 17:56:20,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:56:20,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:56:20,318 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:20,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:56:20,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:56:20,319 INFO L87 Difference]: Start difference. First operand 5393 states and 16073 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:23,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:23,909 INFO L93 Difference]: Finished difference Result 9391 states and 27767 transitions. [2022-03-03 17:56:23,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-03-03 17:56:23,909 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:56:23,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:23,950 INFO L225 Difference]: With dead ends: 9391 [2022-03-03 17:56:23,950 INFO L226 Difference]: Without dead ends: 9321 [2022-03-03 17:56:23,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4948 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2244, Invalid=11798, Unknown=0, NotChecked=0, Total=14042 [2022-03-03 17:56:23,951 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 579 mSDsluCounter, 2837 mSDsCounter, 0 mSdLazyCounter, 1520 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:23,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 2834 Invalid, 1626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1520 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:56:23,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9321 states. [2022-03-03 17:56:24,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9321 to 5713. [2022-03-03 17:56:24,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5713 states, 5712 states have (on average 2.9903711484593836) internal successors, (17081), 5712 states have internal predecessors, (17081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:24,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5713 states to 5713 states and 17081 transitions. [2022-03-03 17:56:24,036 INFO L78 Accepts]: Start accepts. Automaton has 5713 states and 17081 transitions. Word has length 70 [2022-03-03 17:56:24,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:24,037 INFO L470 AbstractCegarLoop]: Abstraction has 5713 states and 17081 transitions. [2022-03-03 17:56:24,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:24,037 INFO L276 IsEmpty]: Start isEmpty. Operand 5713 states and 17081 transitions. [2022-03-03 17:56:24,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:56:24,044 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:24,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:24,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-03-03 17:56:24,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:56:24,244 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:24,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:24,245 INFO L85 PathProgramCache]: Analyzing trace with hash 569096981, now seen corresponding path program 75 times [2022-03-03 17:56:24,245 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:24,245 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675971152] [2022-03-03 17:56:24,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:24,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:24,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:24,352 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:24,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675971152] [2022-03-03 17:56:24,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675971152] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:56:24,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164502002] [2022-03-03 17:56:24,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:56:24,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:56:24,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:56:24,353 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:56:24,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-03-03 17:56:24,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:56:24,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:56:24,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:56:24,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:56:24,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:24,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:56:25,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:25,192 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164502002] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:56:25,192 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:56:25,192 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-03-03 17:56:25,192 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397148816] [2022-03-03 17:56:25,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:56:25,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-03 17:56:25,192 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:25,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-03 17:56:25,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1047, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 17:56:25,193 INFO L87 Difference]: Start difference. First operand 5713 states and 17081 transitions. Second operand has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:30,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:30,234 INFO L93 Difference]: Finished difference Result 10418 states and 30896 transitions. [2022-03-03 17:56:30,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-03-03 17:56:30,234 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:56:30,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:30,251 INFO L225 Difference]: With dead ends: 10418 [2022-03-03 17:56:30,252 INFO L226 Difference]: Without dead ends: 10211 [2022-03-03 17:56:30,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10590 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=4077, Invalid=23979, Unknown=0, NotChecked=0, Total=28056 [2022-03-03 17:56:30,254 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 791 mSDsluCounter, 3531 mSDsCounter, 0 mSdLazyCounter, 1879 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 3545 SdHoareTripleChecker+Invalid, 2032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:30,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [791 Valid, 3545 Invalid, 2032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1879 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:56:30,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10211 states. [2022-03-03 17:56:30,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10211 to 6809. [2022-03-03 17:56:30,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6809 states, 6808 states have (on average 3.008078730904818) internal successors, (20479), 6808 states have internal predecessors, (20479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:30,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6809 states to 6809 states and 20479 transitions. [2022-03-03 17:56:30,411 INFO L78 Accepts]: Start accepts. Automaton has 6809 states and 20479 transitions. Word has length 70 [2022-03-03 17:56:30,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:30,411 INFO L470 AbstractCegarLoop]: Abstraction has 6809 states and 20479 transitions. [2022-03-03 17:56:30,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:30,411 INFO L276 IsEmpty]: Start isEmpty. Operand 6809 states and 20479 transitions. [2022-03-03 17:56:30,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:56:30,419 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:30,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:30,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-03-03 17:56:30,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2022-03-03 17:56:30,620 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:30,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:30,620 INFO L85 PathProgramCache]: Analyzing trace with hash -845833117, now seen corresponding path program 76 times [2022-03-03 17:56:30,620 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:30,620 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812995281] [2022-03-03 17:56:30,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:30,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:30,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:30,740 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:30,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812995281] [2022-03-03 17:56:30,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812995281] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:56:30,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179901009] [2022-03-03 17:56:30,741 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:56:30,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:56:30,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:56:30,742 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:56:30,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-03-03 17:56:30,826 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:56:30,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:56:30,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 17:56:30,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:56:31,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:31,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:56:31,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:31,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179901009] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:56:31,505 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:56:31,505 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:56:31,505 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519660348] [2022-03-03 17:56:31,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:56:31,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:56:31,506 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:31,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:56:31,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:56:31,506 INFO L87 Difference]: Start difference. First operand 6809 states and 20479 transitions. Second operand has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:32,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:32,321 INFO L93 Difference]: Finished difference Result 8250 states and 24519 transitions. [2022-03-03 17:56:32,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 17:56:32,322 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:56:32,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:32,335 INFO L225 Difference]: With dead ends: 8250 [2022-03-03 17:56:32,335 INFO L226 Difference]: Without dead ends: 8187 [2022-03-03 17:56:32,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=496, Invalid=2810, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 17:56:32,336 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 393 mSDsluCounter, 2386 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:32,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 2449 Invalid, 1192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:56:32,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8187 states. [2022-03-03 17:56:32,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8187 to 6813. [2022-03-03 17:56:32,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6813 states, 6812 states have (on average 3.0079271873165) internal successors, (20490), 6812 states have internal predecessors, (20490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:32,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6813 states to 6813 states and 20490 transitions. [2022-03-03 17:56:32,470 INFO L78 Accepts]: Start accepts. Automaton has 6813 states and 20490 transitions. Word has length 70 [2022-03-03 17:56:32,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:32,470 INFO L470 AbstractCegarLoop]: Abstraction has 6813 states and 20490 transitions. [2022-03-03 17:56:32,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:32,470 INFO L276 IsEmpty]: Start isEmpty. Operand 6813 states and 20490 transitions. [2022-03-03 17:56:32,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:56:32,479 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:32,479 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] [2022-03-03 17:56:32,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-03-03 17:56:32,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:56:32,680 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:32,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:32,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1864163485, now seen corresponding path program 77 times [2022-03-03 17:56:32,680 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:32,681 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551048630] [2022-03-03 17:56:32,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:32,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:32,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:32,815 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:32,815 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551048630] [2022-03-03 17:56:32,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551048630] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:56:32,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353467064] [2022-03-03 17:56:32,816 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:56:32,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:56:32,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:56:32,817 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:56:32,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-03-03 17:56:32,913 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:56:32,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:56:32,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 17:56:32,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:56:33,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:33,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:56:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:33,553 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353467064] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:56:33,553 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:56:33,554 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:56:33,554 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692737230] [2022-03-03 17:56:33,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:56:33,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:56:33,554 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:33,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:56:33,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:56:33,554 INFO L87 Difference]: Start difference. First operand 6813 states and 20490 transitions. Second operand has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:34,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:34,402 INFO L93 Difference]: Finished difference Result 8670 states and 25800 transitions. [2022-03-03 17:56:34,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-03 17:56:34,402 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:56:34,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:34,415 INFO L225 Difference]: With dead ends: 8670 [2022-03-03 17:56:34,415 INFO L226 Difference]: Without dead ends: 8592 [2022-03-03 17:56:34,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=629, Invalid=3531, Unknown=0, NotChecked=0, Total=4160 [2022-03-03 17:56:34,416 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 324 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:34,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 1935 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:56:34,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8592 states. [2022-03-03 17:56:34,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8592 to 7069. [2022-03-03 17:56:34,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7069 states, 7068 states have (on average 2.999151103565365) internal successors, (21198), 7068 states have internal predecessors, (21198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:34,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7069 states to 7069 states and 21198 transitions. [2022-03-03 17:56:34,518 INFO L78 Accepts]: Start accepts. Automaton has 7069 states and 21198 transitions. Word has length 70 [2022-03-03 17:56:34,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:34,518 INFO L470 AbstractCegarLoop]: Abstraction has 7069 states and 21198 transitions. [2022-03-03 17:56:34,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:34,518 INFO L276 IsEmpty]: Start isEmpty. Operand 7069 states and 21198 transitions. [2022-03-03 17:56:34,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:56:34,527 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:34,527 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:34,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-03-03 17:56:34,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:56:34,728 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:34,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:34,728 INFO L85 PathProgramCache]: Analyzing trace with hash -801486417, now seen corresponding path program 78 times [2022-03-03 17:56:34,728 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:34,728 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455289034] [2022-03-03 17:56:34,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:34,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:34,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:34,860 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:34,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455289034] [2022-03-03 17:56:34,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455289034] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:56:34,861 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276636658] [2022-03-03 17:56:34,861 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:56:34,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:56:34,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:56:34,862 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) [2022-03-03 17:56:34,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-03-03 17:56:34,953 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:56:34,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:56:34,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:56:34,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:56:35,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:35,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:56:35,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:35,777 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276636658] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:56:35,777 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:56:35,777 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-03 17:56:35,777 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659581124] [2022-03-03 17:56:35,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:56:35,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:56:35,777 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:35,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:56:35,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:56:35,778 INFO L87 Difference]: Start difference. First operand 7069 states and 21198 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:38,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:38,646 INFO L93 Difference]: Finished difference Result 9783 states and 28923 transitions. [2022-03-03 17:56:38,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-03 17:56:38,646 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:56:38,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:38,661 INFO L225 Difference]: With dead ends: 9783 [2022-03-03 17:56:38,661 INFO L226 Difference]: Without dead ends: 9557 [2022-03-03 17:56:38,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3056 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1259, Invalid=8641, Unknown=0, NotChecked=0, Total=9900 [2022-03-03 17:56:38,662 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 540 mSDsluCounter, 2793 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 2823 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:38,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [540 Valid, 2823 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:56:38,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9557 states. [2022-03-03 17:56:38,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9557 to 7145. [2022-03-03 17:56:38,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7145 states, 7144 states have (on average 2.9959406494960805) internal successors, (21403), 7144 states have internal predecessors, (21403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:38,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7145 states to 7145 states and 21403 transitions. [2022-03-03 17:56:38,781 INFO L78 Accepts]: Start accepts. Automaton has 7145 states and 21403 transitions. Word has length 70 [2022-03-03 17:56:38,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:38,781 INFO L470 AbstractCegarLoop]: Abstraction has 7145 states and 21403 transitions. [2022-03-03 17:56:38,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:38,781 INFO L276 IsEmpty]: Start isEmpty. Operand 7145 states and 21403 transitions. [2022-03-03 17:56:38,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:56:38,791 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:38,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:38,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-03-03 17:56:38,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:56:38,991 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:38,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:38,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1944307075, now seen corresponding path program 79 times [2022-03-03 17:56:38,992 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:38,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986527450] [2022-03-03 17:56:38,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:38,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:39,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:39,121 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:39,121 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986527450] [2022-03-03 17:56:39,121 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986527450] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:56:39,121 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110917903] [2022-03-03 17:56:39,121 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:56:39,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:56:39,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:56:39,122 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:56:39,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-03-03 17:56:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:39,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:56:39,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:56:39,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:39,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:56:39,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:39,971 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110917903] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:56:39,971 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:56:39,971 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-03 17:56:39,971 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219166296] [2022-03-03 17:56:39,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:56:39,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:56:39,972 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:39,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:56:39,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:56:39,972 INFO L87 Difference]: Start difference. First operand 7145 states and 21403 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:44,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:44,092 INFO L93 Difference]: Finished difference Result 12364 states and 36685 transitions. [2022-03-03 17:56:44,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-03-03 17:56:44,093 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:56:44,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:44,114 INFO L225 Difference]: With dead ends: 12364 [2022-03-03 17:56:44,115 INFO L226 Difference]: Without dead ends: 12286 [2022-03-03 17:56:44,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6266 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2687, Invalid=14869, Unknown=0, NotChecked=0, Total=17556 [2022-03-03 17:56:44,116 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 618 mSDsluCounter, 2753 mSDsCounter, 0 mSdLazyCounter, 1620 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 2806 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:44,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 2806 Invalid, 1729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1620 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:56:44,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12286 states. [2022-03-03 17:56:44,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12286 to 7585. [2022-03-03 17:56:44,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7585 states, 7584 states have (on average 3.0038238396624473) internal successors, (22781), 7584 states have internal predecessors, (22781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:44,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7585 states to 7585 states and 22781 transitions. [2022-03-03 17:56:44,257 INFO L78 Accepts]: Start accepts. Automaton has 7585 states and 22781 transitions. Word has length 70 [2022-03-03 17:56:44,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:44,257 INFO L470 AbstractCegarLoop]: Abstraction has 7585 states and 22781 transitions. [2022-03-03 17:56:44,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:44,257 INFO L276 IsEmpty]: Start isEmpty. Operand 7585 states and 22781 transitions. [2022-03-03 17:56:44,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:56:44,267 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:44,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:44,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-03-03 17:56:44,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-03-03 17:56:44,468 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:44,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:44,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1064051275, now seen corresponding path program 80 times [2022-03-03 17:56:44,468 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:44,468 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237061035] [2022-03-03 17:56:44,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:44,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:44,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:44,583 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:44,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237061035] [2022-03-03 17:56:44,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237061035] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:56:44,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377179150] [2022-03-03 17:56:44,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:56:44,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:56:44,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:56:44,584 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:56:44,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-03-03 17:56:44,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:56:44,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:56:44,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:56:44,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:56:44,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:44,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:56:45,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:45,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377179150] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:56:45,477 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:56:45,477 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-03 17:56:45,477 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884113840] [2022-03-03 17:56:45,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:56:45,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:56:45,477 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:45,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:56:45,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=922, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:56:45,477 INFO L87 Difference]: Start difference. First operand 7585 states and 22781 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:50,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:50,485 INFO L93 Difference]: Finished difference Result 13169 states and 38887 transitions. [2022-03-03 17:56:50,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-03-03 17:56:50,485 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:56:50,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:50,510 INFO L225 Difference]: With dead ends: 13169 [2022-03-03 17:56:50,510 INFO L226 Difference]: Without dead ends: 12961 [2022-03-03 17:56:50,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9122 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=3474, Invalid=20706, Unknown=0, NotChecked=0, Total=24180 [2022-03-03 17:56:50,513 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 873 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 2994 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:50,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 2994 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1685 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:56:50,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12961 states. [2022-03-03 17:56:50,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12961 to 8545. [2022-03-03 17:56:50,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8545 states, 8544 states have (on average 3.0038623595505616) internal successors, (25665), 8544 states have internal predecessors, (25665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:50,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8545 states to 8545 states and 25665 transitions. [2022-03-03 17:56:50,695 INFO L78 Accepts]: Start accepts. Automaton has 8545 states and 25665 transitions. Word has length 70 [2022-03-03 17:56:50,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:50,695 INFO L470 AbstractCegarLoop]: Abstraction has 8545 states and 25665 transitions. [2022-03-03 17:56:50,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:50,695 INFO L276 IsEmpty]: Start isEmpty. Operand 8545 states and 25665 transitions. [2022-03-03 17:56:50,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:56:50,707 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:50,707 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] [2022-03-03 17:56:50,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-03-03 17:56:50,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-03-03 17:56:50,908 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:50,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:50,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1956750805, now seen corresponding path program 81 times [2022-03-03 17:56:50,908 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:50,908 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389586217] [2022-03-03 17:56:50,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:50,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:51,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:51,026 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:51,026 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389586217] [2022-03-03 17:56:51,026 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389586217] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:56:51,026 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957332196] [2022-03-03 17:56:51,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:56:51,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:56:51,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:56:51,027 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:56:51,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-03-03 17:56:51,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:56:51,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:56:51,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:56:51,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:56:51,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:51,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:56:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:51,908 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957332196] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:56:51,908 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:56:51,908 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-03 17:56:51,909 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168401515] [2022-03-03 17:56:51,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:56:51,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:56:51,909 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:51,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:56:51,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:56:51,909 INFO L87 Difference]: Start difference. First operand 8545 states and 25665 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:57,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:56:57,932 INFO L93 Difference]: Finished difference Result 15093 states and 44939 transitions. [2022-03-03 17:56:57,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2022-03-03 17:56:57,932 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:56:57,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:56:57,961 INFO L225 Difference]: With dead ends: 15093 [2022-03-03 17:56:57,961 INFO L226 Difference]: Without dead ends: 15004 [2022-03-03 17:56:57,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12633 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=4476, Invalid=28466, Unknown=0, NotChecked=0, Total=32942 [2022-03-03 17:56:57,964 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 786 mSDsluCounter, 3009 mSDsCounter, 0 mSdLazyCounter, 1758 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 3099 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:57,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [786 Valid, 3099 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1758 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:56:57,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15004 states. [2022-03-03 17:56:58,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15004 to 8781. [2022-03-03 17:56:58,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8781 states, 8780 states have (on average 3.0093394077448745) internal successors, (26422), 8780 states have internal predecessors, (26422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:58,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8781 states to 8781 states and 26422 transitions. [2022-03-03 17:56:58,163 INFO L78 Accepts]: Start accepts. Automaton has 8781 states and 26422 transitions. Word has length 70 [2022-03-03 17:56:58,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:56:58,164 INFO L470 AbstractCegarLoop]: Abstraction has 8781 states and 26422 transitions. [2022-03-03 17:56:58,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:56:58,164 INFO L276 IsEmpty]: Start isEmpty. Operand 8781 states and 26422 transitions. [2022-03-03 17:56:58,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:56:58,176 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:56:58,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:56:58,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-03-03 17:56:58,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2022-03-03 17:56:58,377 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:56:58,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:56:58,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1791018719, now seen corresponding path program 82 times [2022-03-03 17:56:58,377 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:56:58,377 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619863347] [2022-03-03 17:56:58,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:56:58,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:56:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:56:58,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:58,498 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:56:58,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619863347] [2022-03-03 17:56:58,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619863347] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:56:58,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815094060] [2022-03-03 17:56:58,498 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:56:58,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:56:58,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:56:58,499 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:56:58,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-03-03 17:56:58,592 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:56:58,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:56:58,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 17:56:58,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:56:58,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:58,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:56:59,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:56:59,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815094060] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:56:59,257 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:56:59,257 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:56:59,257 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836561400] [2022-03-03 17:56:59,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:56:59,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:56:59,258 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:56:59,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:56:59,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:56:59,258 INFO L87 Difference]: Start difference. First operand 8781 states and 26422 transitions. Second operand has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:00,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:00,865 INFO L93 Difference]: Finished difference Result 11574 states and 34306 transitions. [2022-03-03 17:57:00,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-03 17:57:00,866 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:57:00,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:00,889 INFO L225 Difference]: With dead ends: 11574 [2022-03-03 17:57:00,889 INFO L226 Difference]: Without dead ends: 11499 [2022-03-03 17:57:00,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2256 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1028, Invalid=6112, Unknown=0, NotChecked=0, Total=7140 [2022-03-03 17:57:00,890 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 574 mSDsluCounter, 2627 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 2680 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:00,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 2680 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1437 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:57:00,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11499 states. [2022-03-03 17:57:01,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11499 to 8805. [2022-03-03 17:57:01,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8805 states, 8804 states have (on average 3.008632439800091) internal successors, (26488), 8804 states have internal predecessors, (26488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:01,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8805 states to 8805 states and 26488 transitions. [2022-03-03 17:57:01,056 INFO L78 Accepts]: Start accepts. Automaton has 8805 states and 26488 transitions. Word has length 70 [2022-03-03 17:57:01,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:01,056 INFO L470 AbstractCegarLoop]: Abstraction has 8805 states and 26488 transitions. [2022-03-03 17:57:01,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:01,056 INFO L276 IsEmpty]: Start isEmpty. Operand 8805 states and 26488 transitions. [2022-03-03 17:57:01,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:57:01,102 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:01,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:01,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-03-03 17:57:01,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2022-03-03 17:57:01,302 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:01,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:01,303 INFO L85 PathProgramCache]: Analyzing trace with hash 206048025, now seen corresponding path program 83 times [2022-03-03 17:57:01,303 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:01,303 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562084593] [2022-03-03 17:57:01,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:01,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:01,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:01,423 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:01,423 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562084593] [2022-03-03 17:57:01,423 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562084593] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:57:01,423 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345217404] [2022-03-03 17:57:01,423 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:57:01,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:57:01,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:57:01,424 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:57:01,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-03-03 17:57:01,514 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:57:01,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:57:01,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 17:57:01,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:57:01,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:01,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:57:02,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:02,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345217404] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:57:02,178 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:57:02,178 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:57:02,178 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149032760] [2022-03-03 17:57:02,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:57:02,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:57:02,178 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:02,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:57:02,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:57:02,179 INFO L87 Difference]: Start difference. First operand 8805 states and 26488 transitions. Second operand has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:03,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:03,561 INFO L93 Difference]: Finished difference Result 11718 states and 35118 transitions. [2022-03-03 17:57:03,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-03-03 17:57:03,561 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:57:03,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:03,582 INFO L225 Difference]: With dead ends: 11718 [2022-03-03 17:57:03,582 INFO L226 Difference]: Without dead ends: 11640 [2022-03-03 17:57:03,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2026 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1075, Invalid=5405, Unknown=0, NotChecked=0, Total=6480 [2022-03-03 17:57:03,582 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 386 mSDsluCounter, 1913 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:03,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 1985 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:57:03,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11640 states. [2022-03-03 17:57:03,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11640 to 8957. [2022-03-03 17:57:03,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8957 states, 8956 states have (on average 3.014068780705672) internal successors, (26994), 8956 states have internal predecessors, (26994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:03,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8957 states to 8957 states and 26994 transitions. [2022-03-03 17:57:03,777 INFO L78 Accepts]: Start accepts. Automaton has 8957 states and 26994 transitions. Word has length 70 [2022-03-03 17:57:03,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:03,777 INFO L470 AbstractCegarLoop]: Abstraction has 8957 states and 26994 transitions. [2022-03-03 17:57:03,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:03,777 INFO L276 IsEmpty]: Start isEmpty. Operand 8957 states and 26994 transitions. [2022-03-03 17:57:03,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:57:03,790 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:03,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:03,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-03-03 17:57:03,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:57:03,991 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:03,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:03,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1835365419, now seen corresponding path program 84 times [2022-03-03 17:57:03,991 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:03,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043542478] [2022-03-03 17:57:03,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:03,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:04,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:04,109 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:04,109 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043542478] [2022-03-03 17:57:04,109 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043542478] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:57:04,109 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85599061] [2022-03-03 17:57:04,109 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:57:04,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:57:04,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:57:04,110 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:57:04,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-03-03 17:57:04,202 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:57:04,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:57:04,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:57:04,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:57:04,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:04,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:57:04,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:04,986 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85599061] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:57:04,986 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:57:04,986 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-03 17:57:04,987 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397194860] [2022-03-03 17:57:04,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:57:04,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:57:04,987 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:04,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:57:04,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:57:04,987 INFO L87 Difference]: Start difference. First operand 8957 states and 26994 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:09,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:09,177 INFO L93 Difference]: Finished difference Result 12589 states and 37341 transitions. [2022-03-03 17:57:09,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-03-03 17:57:09,177 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:57:09,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:09,203 INFO L225 Difference]: With dead ends: 12589 [2022-03-03 17:57:09,203 INFO L226 Difference]: Without dead ends: 12363 [2022-03-03 17:57:09,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6416 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2449, Invalid=15373, Unknown=0, NotChecked=0, Total=17822 [2022-03-03 17:57:09,204 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 755 mSDsluCounter, 2784 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 2810 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:09,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 2810 Invalid, 1618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:57:09,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12363 states. [2022-03-03 17:57:09,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12363 to 9093. [2022-03-03 17:57:09,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9093 states, 9092 states have (on average 3.0153981522217332) internal successors, (27416), 9092 states have internal predecessors, (27416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:09,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9093 states to 9093 states and 27416 transitions. [2022-03-03 17:57:09,391 INFO L78 Accepts]: Start accepts. Automaton has 9093 states and 27416 transitions. Word has length 70 [2022-03-03 17:57:09,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:09,391 INFO L470 AbstractCegarLoop]: Abstraction has 9093 states and 27416 transitions. [2022-03-03 17:57:09,391 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) [2022-03-03 17:57:09,391 INFO L276 IsEmpty]: Start isEmpty. Operand 9093 states and 27416 transitions. [2022-03-03 17:57:09,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:57:09,405 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:09,405 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:09,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-03-03 17:57:09,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:57:09,606 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:09,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:09,606 INFO L85 PathProgramCache]: Analyzing trace with hash 692544761, now seen corresponding path program 85 times [2022-03-03 17:57:09,606 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:09,606 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172826906] [2022-03-03 17:57:09,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:09,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:09,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:09,722 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:09,722 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172826906] [2022-03-03 17:57:09,722 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172826906] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:57:09,722 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931624055] [2022-03-03 17:57:09,722 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:57:09,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:57:09,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:57:09,724 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:57:09,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-03-03 17:57:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:09,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:57:09,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:57:10,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:10,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:57:10,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:10,653 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931624055] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:57:10,653 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:57:10,653 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-03 17:57:10,653 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567304901] [2022-03-03 17:57:10,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:57:10,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:57:10,653 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:10,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:57:10,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=898, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:57:10,654 INFO L87 Difference]: Start difference. First operand 9093 states and 27416 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:14,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:14,544 INFO L93 Difference]: Finished difference Result 13905 states and 41521 transitions. [2022-03-03 17:57:14,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-03-03 17:57:14,544 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 [2022-03-03 17:57:14,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:14,573 INFO L225 Difference]: With dead ends: 13905 [2022-03-03 17:57:14,573 INFO L226 Difference]: Without dead ends: 13819 [2022-03-03 17:57:14,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6479 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3010, Invalid=14546, Unknown=0, NotChecked=0, Total=17556 [2022-03-03 17:57:14,574 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 748 mSDsluCounter, 2459 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 2531 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:14,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [748 Valid, 2531 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:57:14,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13819 states. [2022-03-03 17:57:14,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13819 to 9969. [2022-03-03 17:57:14,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9969 states, 9968 states have (on average 3.0217696629213484) internal successors, (30121), 9968 states have internal predecessors, (30121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:14,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9969 states to 9969 states and 30121 transitions. [2022-03-03 17:57:14,783 INFO L78 Accepts]: Start accepts. Automaton has 9969 states and 30121 transitions. Word has length 70 [2022-03-03 17:57:14,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:14,783 INFO L470 AbstractCegarLoop]: Abstraction has 9969 states and 30121 transitions. [2022-03-03 17:57:14,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:14,784 INFO L276 IsEmpty]: Start isEmpty. Operand 9969 states and 30121 transitions. [2022-03-03 17:57:14,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:57:14,798 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:14,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:14,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-03-03 17:57:14,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2022-03-03 17:57:15,000 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:15,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:15,000 INFO L85 PathProgramCache]: Analyzing trace with hash 680101031, now seen corresponding path program 86 times [2022-03-03 17:57:15,000 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:15,000 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463586535] [2022-03-03 17:57:15,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:15,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:15,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:15,117 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:15,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463586535] [2022-03-03 17:57:15,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463586535] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:57:15,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409389196] [2022-03-03 17:57:15,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:57:15,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:57:15,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:57:15,118 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:57:15,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-03-03 17:57:15,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:57:15,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:57:15,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:57:15,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:57:15,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:15,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:57:15,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:15,988 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409389196] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:57:15,988 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:57:15,988 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-03 17:57:15,988 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255742847] [2022-03-03 17:57:15,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:57:15,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:57:15,989 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:15,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:57:15,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:57:15,989 INFO L87 Difference]: Start difference. First operand 9969 states and 30121 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:20,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:20,181 INFO L93 Difference]: Finished difference Result 16134 states and 48531 transitions. [2022-03-03 17:57:20,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-03-03 17:57:20,181 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:57:20,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:20,210 INFO L225 Difference]: With dead ends: 16134 [2022-03-03 17:57:20,211 INFO L226 Difference]: Without dead ends: 16045 [2022-03-03 17:57:20,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6718 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3044, Invalid=15316, Unknown=0, NotChecked=0, Total=18360 [2022-03-03 17:57:20,212 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 862 mSDsluCounter, 2967 mSDsCounter, 0 mSdLazyCounter, 1649 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 3033 SdHoareTripleChecker+Invalid, 1810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:20,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [862 Valid, 3033 Invalid, 1810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1649 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:57:20,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16045 states. [2022-03-03 17:57:20,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16045 to 10725. [2022-03-03 17:57:20,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10725 states, 10724 states have (on average 3.0365535248041775) internal successors, (32564), 10724 states have internal predecessors, (32564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:20,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10725 states to 10725 states and 32564 transitions. [2022-03-03 17:57:20,430 INFO L78 Accepts]: Start accepts. Automaton has 10725 states and 32564 transitions. Word has length 70 [2022-03-03 17:57:20,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:20,430 INFO L470 AbstractCegarLoop]: Abstraction has 10725 states and 32564 transitions. [2022-03-03 17:57:20,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:20,430 INFO L276 IsEmpty]: Start isEmpty. Operand 10725 states and 32564 transitions. [2022-03-03 17:57:20,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:57:20,446 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:20,446 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:20,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2022-03-03 17:57:20,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:57:20,646 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:20,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:20,647 INFO L85 PathProgramCache]: Analyzing trace with hash -86569393, now seen corresponding path program 87 times [2022-03-03 17:57:20,647 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:20,647 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806243583] [2022-03-03 17:57:20,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:20,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:20,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:20,811 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:20,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806243583] [2022-03-03 17:57:20,812 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806243583] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:57:20,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766432500] [2022-03-03 17:57:20,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:57:20,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:57:20,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:57:20,813 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:57:20,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-03-03 17:57:20,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:57:20,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:57:20,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:57:20,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:57:21,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:21,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:57:21,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:21,734 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766432500] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:57:21,734 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:57:21,734 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-03-03 17:57:21,735 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003146562] [2022-03-03 17:57:21,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:57:21,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-03 17:57:21,735 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:21,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-03 17:57:21,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1055, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 17:57:21,735 INFO L87 Difference]: Start difference. First operand 10725 states and 32564 transitions. Second operand has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:23,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:23,420 INFO L93 Difference]: Finished difference Result 12758 states and 38181 transitions. [2022-03-03 17:57:23,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-03 17:57:23,421 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:57:23,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:23,446 INFO L225 Difference]: With dead ends: 12758 [2022-03-03 17:57:23,446 INFO L226 Difference]: Without dead ends: 12583 [2022-03-03 17:57:23,447 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 [2022-03-03 17:57:23,447 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 483 mSDsluCounter, 2403 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:23,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [483 Valid, 2435 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:57:23,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12583 states. [2022-03-03 17:57:23,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12583 to 11021. [2022-03-03 17:57:23,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11021 states, 11020 states have (on average 3.0339382940108894) internal successors, (33434), 11020 states have internal predecessors, (33434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:23,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11021 states to 11021 states and 33434 transitions. [2022-03-03 17:57:23,646 INFO L78 Accepts]: Start accepts. Automaton has 11021 states and 33434 transitions. Word has length 70 [2022-03-03 17:57:23,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:23,646 INFO L470 AbstractCegarLoop]: Abstraction has 11021 states and 33434 transitions. [2022-03-03 17:57:23,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:23,647 INFO L276 IsEmpty]: Start isEmpty. Operand 11021 states and 33434 transitions. [2022-03-03 17:57:23,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:57:23,663 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:23,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:23,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-03-03 17:57:23,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:57:23,864 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:23,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:23,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1525183769, now seen corresponding path program 88 times [2022-03-03 17:57:23,864 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:23,864 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497053690] [2022-03-03 17:57:23,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:23,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:24,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:24,065 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:24,065 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497053690] [2022-03-03 17:57:24,065 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497053690] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:57:24,065 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087235110] [2022-03-03 17:57:24,065 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:57:24,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:57:24,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:57:24,066 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:57:24,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-03-03 17:57:24,158 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:57:24,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:57:24,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 17:57:24,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:57:24,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:24,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:57:24,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:24,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087235110] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:57:24,817 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:57:24,817 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:57:24,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158655493] [2022-03-03 17:57:24,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:57:24,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:57:24,818 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:24,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:57:24,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:57:24,818 INFO L87 Difference]: Start difference. First operand 11021 states and 33434 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:25,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:25,814 INFO L93 Difference]: Finished difference Result 12477 states and 37314 transitions. [2022-03-03 17:57:25,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:57:25,815 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:57:25,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:25,837 INFO L225 Difference]: With dead ends: 12477 [2022-03-03 17:57:25,837 INFO L226 Difference]: Without dead ends: 12281 [2022-03-03 17:57:25,838 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 [2022-03-03 17:57:25,838 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 529 mSDsluCounter, 2234 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:25,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 2264 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:57:25,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12281 states. [2022-03-03 17:57:26,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12281 to 11017. [2022-03-03 17:57:26,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11017 states, 11016 states have (on average 3.034041394335512) internal successors, (33423), 11016 states have internal predecessors, (33423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:26,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11017 states to 11017 states and 33423 transitions. [2022-03-03 17:57:26,096 INFO L78 Accepts]: Start accepts. Automaton has 11017 states and 33423 transitions. Word has length 70 [2022-03-03 17:57:26,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:26,096 INFO L470 AbstractCegarLoop]: Abstraction has 11017 states and 33423 transitions. [2022-03-03 17:57:26,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:26,097 INFO L276 IsEmpty]: Start isEmpty. Operand 11017 states and 33423 transitions. [2022-03-03 17:57:26,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:57:26,114 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:26,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:26,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-03-03 17:57:26,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:57:26,314 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:26,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:26,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1281105169, now seen corresponding path program 89 times [2022-03-03 17:57:26,315 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:26,315 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386645244] [2022-03-03 17:57:26,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:26,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:26,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:26,437 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:26,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386645244] [2022-03-03 17:57:26,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386645244] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:57:26,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049732313] [2022-03-03 17:57:26,437 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:57:26,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:57:26,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:57:26,438 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:57:26,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-03-03 17:57:26,528 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:57:26,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:57:26,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:57:26,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:57:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:26,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:57:27,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:27,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049732313] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:57:27,261 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:57:27,261 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:57:27,261 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227855759] [2022-03-03 17:57:27,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:57:27,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:57:27,262 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:27,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:57:27,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:57:27,262 INFO L87 Difference]: Start difference. First operand 11017 states and 33423 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:29,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:29,032 INFO L93 Difference]: Finished difference Result 17317 states and 52070 transitions. [2022-03-03 17:57:29,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-03 17:57:29,032 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:57:29,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:29,064 INFO L225 Difference]: With dead ends: 17317 [2022-03-03 17:57:29,064 INFO L226 Difference]: Without dead ends: 17131 [2022-03-03 17:57:29,064 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 [2022-03-03 17:57:29,064 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 460 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:29,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 2436 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:57:29,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17131 states. [2022-03-03 17:57:29,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17131 to 11697. [2022-03-03 17:57:29,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11697 states, 11696 states have (on average 3.031207250341997) internal successors, (35453), 11696 states have internal predecessors, (35453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:29,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11697 states to 11697 states and 35453 transitions. [2022-03-03 17:57:29,302 INFO L78 Accepts]: Start accepts. Automaton has 11697 states and 35453 transitions. Word has length 70 [2022-03-03 17:57:29,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:29,302 INFO L470 AbstractCegarLoop]: Abstraction has 11697 states and 35453 transitions. [2022-03-03 17:57:29,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:29,303 INFO L276 IsEmpty]: Start isEmpty. Operand 11697 states and 35453 transitions. [2022-03-03 17:57:29,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:57:29,319 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:29,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:29,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-03-03 17:57:29,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable121 [2022-03-03 17:57:29,520 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:29,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:29,520 INFO L85 PathProgramCache]: Analyzing trace with hash -360508537, now seen corresponding path program 90 times [2022-03-03 17:57:29,520 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:29,520 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243630488] [2022-03-03 17:57:29,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:29,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:29,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:29,658 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:29,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243630488] [2022-03-03 17:57:29,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243630488] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:57:29,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385714506] [2022-03-03 17:57:29,658 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:57:29,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:57:29,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:57:29,659 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:57:29,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-03-03 17:57:29,761 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:57:29,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:57:29,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:57:29,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:57:30,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:30,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:57:30,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:30,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385714506] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:57:30,549 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:57:30,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-03-03 17:57:30,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803176950] [2022-03-03 17:57:30,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:57:30,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-03 17:57:30,549 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:30,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-03 17:57:30,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1055, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 17:57:30,550 INFO L87 Difference]: Start difference. First operand 11697 states and 35453 transitions. Second operand has 35 states, 35 states have (on average 2.942857142857143) internal successors, (103), 35 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:33,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:33,143 INFO L93 Difference]: Finished difference Result 15500 states and 46196 transitions. [2022-03-03 17:57:33,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-03 17:57:33,143 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.942857142857143) internal successors, (103), 35 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:57:33,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:33,173 INFO L225 Difference]: With dead ends: 15500 [2022-03-03 17:57:33,173 INFO L226 Difference]: Without dead ends: 15425 [2022-03-03 17:57:33,174 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 [2022-03-03 17:57:33,174 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 514 mSDsluCounter, 3072 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:33,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [514 Valid, 3155 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1681 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:57:33,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15425 states. [2022-03-03 17:57:33,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15425 to 12397. [2022-03-03 17:57:33,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12397 states, 12396 states have (on average 3.0450145208131656) internal successors, (37746), 12396 states have internal predecessors, (37746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:33,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12397 states to 12397 states and 37746 transitions. [2022-03-03 17:57:33,418 INFO L78 Accepts]: Start accepts. Automaton has 12397 states and 37746 transitions. Word has length 70 [2022-03-03 17:57:33,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:33,418 INFO L470 AbstractCegarLoop]: Abstraction has 12397 states and 37746 transitions. [2022-03-03 17:57:33,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.942857142857143) internal successors, (103), 35 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:33,418 INFO L276 IsEmpty]: Start isEmpty. Operand 12397 states and 37746 transitions. [2022-03-03 17:57:33,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:57:33,438 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:33,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:33,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-03-03 17:57:33,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-03-03 17:57:33,651 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:33,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:33,652 INFO L85 PathProgramCache]: Analyzing trace with hash -398905281, now seen corresponding path program 91 times [2022-03-03 17:57:33,652 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:33,652 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765505285] [2022-03-03 17:57:33,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:33,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:33,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:33,767 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:33,767 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765505285] [2022-03-03 17:57:33,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765505285] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:57:33,767 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228352900] [2022-03-03 17:57:33,767 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:57:33,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:57:33,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:57:33,768 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:57:33,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-03-03 17:57:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:33,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:57:33,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:57:34,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:34,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:57:34,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:34,573 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228352900] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:57:34,573 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:57:34,573 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:57:34,573 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433105552] [2022-03-03 17:57:34,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:57:34,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:57:34,573 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:34,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:57:34,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:57:34,573 INFO L87 Difference]: Start difference. First operand 12397 states and 37746 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:36,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:36,196 INFO L93 Difference]: Finished difference Result 18209 states and 54741 transitions. [2022-03-03 17:57:36,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-03 17:57:36,197 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:57:36,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:36,234 INFO L225 Difference]: With dead ends: 18209 [2022-03-03 17:57:36,235 INFO L226 Difference]: Without dead ends: 18069 [2022-03-03 17:57:36,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1844 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=867, Invalid=5139, Unknown=0, NotChecked=0, Total=6006 [2022-03-03 17:57:36,236 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 475 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 2408 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:36,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 2408 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:57:36,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18069 states. [2022-03-03 17:57:36,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18069 to 12569. [2022-03-03 17:57:36,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12569 states, 12568 states have (on average 3.044796308084023) internal successors, (38267), 12568 states have internal predecessors, (38267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:36,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12569 states to 12569 states and 38267 transitions. [2022-03-03 17:57:36,507 INFO L78 Accepts]: Start accepts. Automaton has 12569 states and 38267 transitions. Word has length 70 [2022-03-03 17:57:36,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:36,507 INFO L470 AbstractCegarLoop]: Abstraction has 12569 states and 38267 transitions. [2022-03-03 17:57:36,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:36,508 INFO L276 IsEmpty]: Start isEmpty. Operand 12569 states and 38267 transitions. [2022-03-03 17:57:36,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:57:36,528 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:36,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:36,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-03-03 17:57:36,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-03-03 17:57:36,729 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:36,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:36,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1458757001, now seen corresponding path program 92 times [2022-03-03 17:57:36,729 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:36,729 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978149820] [2022-03-03 17:57:36,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:36,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:36,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:36,849 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:36,849 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978149820] [2022-03-03 17:57:36,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978149820] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:57:36,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128316830] [2022-03-03 17:57:36,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:57:36,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:57:36,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:57:36,851 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:57:36,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-03-03 17:57:36,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:57:36,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:57:36,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:57:36,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:57:37,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:37,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:57:37,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:37,717 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128316830] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:57:37,717 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:57:37,717 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:57:37,717 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069284964] [2022-03-03 17:57:37,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:57:37,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:57:37,718 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:37,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:57:37,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:57:37,718 INFO L87 Difference]: Start difference. First operand 12569 states and 38267 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:40,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:40,680 INFO L93 Difference]: Finished difference Result 19261 states and 57956 transitions. [2022-03-03 17:57:40,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-03-03 17:57:40,680 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:57:40,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:40,721 INFO L225 Difference]: With dead ends: 19261 [2022-03-03 17:57:40,722 INFO L226 Difference]: Without dead ends: 19135 [2022-03-03 17:57:40,723 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 [2022-03-03 17:57:40,724 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 639 mSDsluCounter, 2105 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:40,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 2158 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:57:40,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19135 states. [2022-03-03 17:57:40,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19135 to 12745. [2022-03-03 17:57:41,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12745 states, 12744 states have (on average 3.045433145009416) internal successors, (38811), 12744 states have internal predecessors, (38811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:41,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12745 states to 12745 states and 38811 transitions. [2022-03-03 17:57:41,036 INFO L78 Accepts]: Start accepts. Automaton has 12745 states and 38811 transitions. Word has length 70 [2022-03-03 17:57:41,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:41,036 INFO L470 AbstractCegarLoop]: Abstraction has 12745 states and 38811 transitions. [2022-03-03 17:57:41,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:41,036 INFO L276 IsEmpty]: Start isEmpty. Operand 12745 states and 38811 transitions. [2022-03-03 17:57:41,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:57:41,057 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:41,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:41,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-03-03 17:57:41,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:57:41,257 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:41,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:41,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1497153745, now seen corresponding path program 93 times [2022-03-03 17:57:41,258 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:41,258 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582293217] [2022-03-03 17:57:41,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:41,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:41,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:41,376 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:41,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582293217] [2022-03-03 17:57:41,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582293217] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:57:41,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590047190] [2022-03-03 17:57:41,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:57:41,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:57:41,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:57:41,377 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:57:41,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-03-03 17:57:41,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:57:41,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:57:41,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:57:41,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:57:41,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:41,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:57:42,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:42,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590047190] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:57:42,197 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:57:42,197 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:57:42,197 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703416422] [2022-03-03 17:57:42,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:57:42,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:57:42,197 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:42,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:57:42,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:57:42,198 INFO L87 Difference]: Start difference. First operand 12745 states and 38811 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:45,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:45,204 INFO L93 Difference]: Finished difference Result 19613 states and 58886 transitions. [2022-03-03 17:57:45,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-03-03 17:57:45,204 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:57:45,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:45,242 INFO L225 Difference]: With dead ends: 19613 [2022-03-03 17:57:45,242 INFO L226 Difference]: Without dead ends: 19473 [2022-03-03 17:57:45,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4382 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1988, Invalid=10668, Unknown=0, NotChecked=0, Total=12656 [2022-03-03 17:57:45,243 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 586 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:45,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 2694 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:57:45,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19473 states. [2022-03-03 17:57:45,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19473 to 12769. [2022-03-03 17:57:45,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12769 states, 12768 states have (on average 3.045817669172932) internal successors, (38889), 12768 states have internal predecessors, (38889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:45,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12769 states to 12769 states and 38889 transitions. [2022-03-03 17:57:45,524 INFO L78 Accepts]: Start accepts. Automaton has 12769 states and 38889 transitions. Word has length 70 [2022-03-03 17:57:45,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:45,524 INFO L470 AbstractCegarLoop]: Abstraction has 12769 states and 38889 transitions. [2022-03-03 17:57:45,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:45,524 INFO L276 IsEmpty]: Start isEmpty. Operand 12769 states and 38889 transitions. [2022-03-03 17:57:45,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:57:45,544 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:45,544 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:45,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-03-03 17:57:45,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-03-03 17:57:45,745 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:45,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:45,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1832125171, now seen corresponding path program 94 times [2022-03-03 17:57:45,745 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:45,745 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042622078] [2022-03-03 17:57:45,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:45,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:45,868 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:45,868 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042622078] [2022-03-03 17:57:45,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042622078] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:57:45,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774227572] [2022-03-03 17:57:45,869 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:57:45,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:57:45,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:57:45,870 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:57:45,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-03-03 17:57:45,968 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:57:45,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:57:45,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 17:57:45,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:57:46,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:46,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:57:46,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:46,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774227572] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:57:46,574 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:57:46,574 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:57:46,574 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900719402] [2022-03-03 17:57:46,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:57:46,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:57:46,574 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:46,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:57:46,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:57:46,575 INFO L87 Difference]: Start difference. First operand 12769 states and 38889 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:48,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:48,473 INFO L93 Difference]: Finished difference Result 17008 states and 51265 transitions. [2022-03-03 17:57:48,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-03 17:57:48,474 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:57:48,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:48,512 INFO L225 Difference]: With dead ends: 17008 [2022-03-03 17:57:48,512 INFO L226 Difference]: Without dead ends: 16868 [2022-03-03 17:57:48,513 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 [2022-03-03 17:57:48,513 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 496 mSDsluCounter, 2804 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 2863 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:48,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 2863 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:57:48,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16868 states. [2022-03-03 17:57:48,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16868 to 13465. [2022-03-03 17:57:48,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13465 states, 13464 states have (on average 3.05102495543672) internal successors, (41079), 13464 states have internal predecessors, (41079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:48,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13465 states to 13465 states and 41079 transitions. [2022-03-03 17:57:48,832 INFO L78 Accepts]: Start accepts. Automaton has 13465 states and 41079 transitions. Word has length 70 [2022-03-03 17:57:48,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:48,834 INFO L470 AbstractCegarLoop]: Abstraction has 13465 states and 41079 transitions. [2022-03-03 17:57:48,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:48,834 INFO L276 IsEmpty]: Start isEmpty. Operand 13465 states and 41079 transitions. [2022-03-03 17:57:48,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:57:48,857 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:48,857 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] [2022-03-03 17:57:48,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-03-03 17:57:49,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2022-03-03 17:57:49,059 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:49,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:49,059 INFO L85 PathProgramCache]: Analyzing trace with hash -480808329, now seen corresponding path program 95 times [2022-03-03 17:57:49,059 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:49,059 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679143297] [2022-03-03 17:57:49,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:49,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:49,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:49,166 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:49,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679143297] [2022-03-03 17:57:49,167 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679143297] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:57:49,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116952870] [2022-03-03 17:57:49,167 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:57:49,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:57:49,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:57:49,168 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:57:49,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-03-03 17:57:49,259 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:57:49,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:57:49,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 17:57:49,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:57:49,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:49,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:57:49,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:49,842 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116952870] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:57:49,842 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:57:49,842 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:57:49,842 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063249643] [2022-03-03 17:57:49,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:57:49,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:57:49,843 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:49,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:57:49,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=916, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:57:49,843 INFO L87 Difference]: Start difference. First operand 13465 states and 41079 transitions. Second operand has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:50,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:50,950 INFO L93 Difference]: Finished difference Result 16291 states and 49496 transitions. [2022-03-03 17:57:50,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-03 17:57:50,951 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:57:50,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:50,992 INFO L225 Difference]: With dead ends: 16291 [2022-03-03 17:57:50,992 INFO L226 Difference]: Without dead ends: 16187 [2022-03-03 17:57:50,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1299 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=979, Invalid=3991, Unknown=0, NotChecked=0, Total=4970 [2022-03-03 17:57:50,995 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 491 mSDsluCounter, 2157 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:50,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 2226 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:57:51,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16187 states. [2022-03-03 17:57:51,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16187 to 11569. [2022-03-03 17:57:51,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11569 states, 11568 states have (on average 3.0426175656984786) internal successors, (35197), 11568 states have internal predecessors, (35197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:51,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11569 states to 11569 states and 35197 transitions. [2022-03-03 17:57:51,305 INFO L78 Accepts]: Start accepts. Automaton has 11569 states and 35197 transitions. Word has length 70 [2022-03-03 17:57:51,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:51,305 INFO L470 AbstractCegarLoop]: Abstraction has 11569 states and 35197 transitions. [2022-03-03 17:57:51,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:51,305 INFO L276 IsEmpty]: Start isEmpty. Operand 11569 states and 35197 transitions. [2022-03-03 17:57:51,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:57:51,323 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:51,323 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] [2022-03-03 17:57:51,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-03-03 17:57:51,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2022-03-03 17:57:51,535 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:51,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:51,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1145842415, now seen corresponding path program 96 times [2022-03-03 17:57:51,536 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:51,536 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883632178] [2022-03-03 17:57:51,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:51,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:51,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:51,654 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:51,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883632178] [2022-03-03 17:57:51,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883632178] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:57:51,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564718806] [2022-03-03 17:57:51,654 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:57:51,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:57:51,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:57:51,655 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:57:51,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-03-03 17:57:51,750 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:57:51,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:57:51,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:57:51,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:57:52,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:52,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:57:52,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:52,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564718806] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:57:52,466 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:57:52,466 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:57:52,466 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507896869] [2022-03-03 17:57:52,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:57:52,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:57:52,467 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:52,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:57:52,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:57:52,467 INFO L87 Difference]: Start difference. First operand 11569 states and 35197 transitions. Second operand has 34 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 34 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:54,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:54,768 INFO L93 Difference]: Finished difference Result 17131 states and 51397 transitions. [2022-03-03 17:57:54,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-03 17:57:54,768 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 34 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:57:54,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:54,802 INFO L225 Difference]: With dead ends: 17131 [2022-03-03 17:57:54,803 INFO L226 Difference]: Without dead ends: 17005 [2022-03-03 17:57:54,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3029 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1312, Invalid=7808, Unknown=0, NotChecked=0, Total=9120 [2022-03-03 17:57:54,804 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 604 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:54,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 1933 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:57:54,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17005 states. [2022-03-03 17:57:55,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17005 to 11629. [2022-03-03 17:57:55,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11629 states, 11628 states have (on average 3.042139662882697) internal successors, (35374), 11628 states have internal predecessors, (35374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:55,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11629 states to 11629 states and 35374 transitions. [2022-03-03 17:57:55,119 INFO L78 Accepts]: Start accepts. Automaton has 11629 states and 35374 transitions. Word has length 70 [2022-03-03 17:57:55,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:55,119 INFO L470 AbstractCegarLoop]: Abstraction has 11629 states and 35374 transitions. [2022-03-03 17:57:55,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 34 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:55,119 INFO L276 IsEmpty]: Start isEmpty. Operand 11629 states and 35374 transitions. [2022-03-03 17:57:55,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:57:55,136 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:55,136 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] [2022-03-03 17:57:55,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-03-03 17:57:55,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2022-03-03 17:57:55,336 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:55,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:55,337 INFO L85 PathProgramCache]: Analyzing trace with hash -566247181, now seen corresponding path program 97 times [2022-03-03 17:57:55,337 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:55,337 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310331643] [2022-03-03 17:57:55,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:55,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:55,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:55,459 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:55,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310331643] [2022-03-03 17:57:55,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310331643] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:57:55,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963745570] [2022-03-03 17:57:55,459 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:57:55,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:57:55,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:57:55,460 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:57:55,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-03-03 17:57:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:55,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:57:55,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:57:55,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:55,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:57:56,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:56,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963745570] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:57:56,261 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:57:56,261 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:57:56,261 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320177410] [2022-03-03 17:57:56,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:57:56,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:57:56,261 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:56,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:57:56,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=976, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:57:56,262 INFO L87 Difference]: Start difference. First operand 11629 states and 35374 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:57,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:57:57,826 INFO L93 Difference]: Finished difference Result 16449 states and 49459 transitions. [2022-03-03 17:57:57,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-03 17:57:57,826 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:57:57,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:57:57,862 INFO L225 Difference]: With dead ends: 16449 [2022-03-03 17:57:57,862 INFO L226 Difference]: Without dead ends: 16315 [2022-03-03 17:57:57,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1841 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=864, Invalid=5142, Unknown=0, NotChecked=0, Total=6006 [2022-03-03 17:57:57,863 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 458 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:57:57,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [458 Valid, 2049 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:57:57,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16315 states. [2022-03-03 17:57:58,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16315 to 11629. [2022-03-03 17:57:58,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11629 states, 11628 states have (on average 3.042483660130719) internal successors, (35378), 11628 states have internal predecessors, (35378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:58,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11629 states to 11629 states and 35378 transitions. [2022-03-03 17:57:58,122 INFO L78 Accepts]: Start accepts. Automaton has 11629 states and 35378 transitions. Word has length 70 [2022-03-03 17:57:58,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:57:58,122 INFO L470 AbstractCegarLoop]: Abstraction has 11629 states and 35378 transitions. [2022-03-03 17:57:58,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:58,122 INFO L276 IsEmpty]: Start isEmpty. Operand 11629 states and 35378 transitions. [2022-03-03 17:57:58,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:57:58,168 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:57:58,168 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:57:58,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-03-03 17:57:58,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:57:58,368 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:57:58,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:57:58,369 INFO L85 PathProgramCache]: Analyzing trace with hash 45657325, now seen corresponding path program 98 times [2022-03-03 17:57:58,369 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:57:58,369 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305685410] [2022-03-03 17:57:58,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:57:58,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:57:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:57:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:58,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:57:58,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305685410] [2022-03-03 17:57:58,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305685410] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:57:58,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022980706] [2022-03-03 17:57:58,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:57:58,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:57:58,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:57:58,493 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:57:58,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-03-03 17:57:58,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:57:58,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:57:58,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:57:58,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:57:58,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:58,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:57:59,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:57:59,322 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022980706] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:57:59,322 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:57:59,322 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:57:59,322 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446534441] [2022-03-03 17:57:59,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:57:59,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:57:59,322 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:57:59,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:57:59,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:57:59,323 INFO L87 Difference]: Start difference. First operand 11629 states and 35378 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:01,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:01,463 INFO L93 Difference]: Finished difference Result 17464 states and 52615 transitions. [2022-03-03 17:58:01,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-03 17:58:01,463 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:58:01,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:01,498 INFO L225 Difference]: With dead ends: 17464 [2022-03-03 17:58:01,498 INFO L226 Difference]: Without dead ends: 17338 [2022-03-03 17:58:01,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2726 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1223, Invalid=7707, Unknown=0, NotChecked=0, Total=8930 [2022-03-03 17:58:01,499 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 415 mSDsluCounter, 3019 mSDsCounter, 0 mSdLazyCounter, 1561 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 3045 SdHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:01,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 3045 Invalid, 1636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1561 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:58:01,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17338 states. [2022-03-03 17:58:01,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17338 to 11665. [2022-03-03 17:58:01,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11665 states, 11664 states have (on average 3.042266803840878) internal successors, (35485), 11664 states have internal predecessors, (35485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:01,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11665 states to 11665 states and 35485 transitions. [2022-03-03 17:58:01,740 INFO L78 Accepts]: Start accepts. Automaton has 11665 states and 35485 transitions. Word has length 70 [2022-03-03 17:58:01,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:01,741 INFO L470 AbstractCegarLoop]: Abstraction has 11665 states and 35485 transitions. [2022-03-03 17:58:01,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:01,741 INFO L276 IsEmpty]: Start isEmpty. Operand 11665 states and 35485 transitions. [2022-03-03 17:58:01,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:58:01,758 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:01,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:01,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2022-03-03 17:58:01,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:01,958 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:01,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:01,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1539313369, now seen corresponding path program 99 times [2022-03-03 17:58:01,959 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:01,959 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901875185] [2022-03-03 17:58:01,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:01,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:02,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:02,104 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:02,104 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901875185] [2022-03-03 17:58:02,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901875185] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:58:02,104 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810449153] [2022-03-03 17:58:02,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:58:02,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:02,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:58:02,105 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:58:02,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-03-03 17:58:02,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:58:02,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:58:02,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:58:02,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:58:02,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:02,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:58:02,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:02,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810449153] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:58:02,926 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:58:02,926 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:58:02,926 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611534854] [2022-03-03 17:58:02,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:58:02,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:58:02,926 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:02,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:58:02,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:58:02,926 INFO L87 Difference]: Start difference. First operand 11665 states and 35485 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:04,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:04,941 INFO L93 Difference]: Finished difference Result 17251 states and 52120 transitions. [2022-03-03 17:58:04,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-03 17:58:04,941 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:58:04,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:04,977 INFO L225 Difference]: With dead ends: 17251 [2022-03-03 17:58:04,977 INFO L226 Difference]: Without dead ends: 17095 [2022-03-03 17:58:04,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2571 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1214, Invalid=7342, Unknown=0, NotChecked=0, Total=8556 [2022-03-03 17:58:04,979 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 462 mSDsluCounter, 2171 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 2231 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:04,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 2231 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:58:04,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17095 states. [2022-03-03 17:58:05,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17095 to 11649. [2022-03-03 17:58:05,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11649 states, 11648 states have (on average 3.0423248626373627) internal successors, (35437), 11648 states have internal predecessors, (35437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:05,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11649 states to 11649 states and 35437 transitions. [2022-03-03 17:58:05,223 INFO L78 Accepts]: Start accepts. Automaton has 11649 states and 35437 transitions. Word has length 70 [2022-03-03 17:58:05,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:05,224 INFO L470 AbstractCegarLoop]: Abstraction has 11649 states and 35437 transitions. [2022-03-03 17:58:05,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:05,224 INFO L276 IsEmpty]: Start isEmpty. Operand 11649 states and 35437 transitions. [2022-03-03 17:58:05,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:58:05,240 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:05,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:05,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-03-03 17:58:05,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:05,441 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:05,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:05,441 INFO L85 PathProgramCache]: Analyzing trace with hash 90004025, now seen corresponding path program 100 times [2022-03-03 17:58:05,441 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:05,441 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509334175] [2022-03-03 17:58:05,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:05,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:05,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:05,555 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:05,555 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509334175] [2022-03-03 17:58:05,555 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509334175] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:58:05,555 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056969965] [2022-03-03 17:58:05,555 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:58:05,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:05,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:58:05,556 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:58:05,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-03-03 17:58:05,655 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:58:05,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:58:05,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-03 17:58:05,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:58:05,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:05,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:58:06,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:06,270 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056969965] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:58:06,270 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:58:06,270 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2022-03-03 17:58:06,270 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504044678] [2022-03-03 17:58:06,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:58:06,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:58:06,271 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:06,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:58:06,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:58:06,271 INFO L87 Difference]: Start difference. First operand 11649 states and 35437 transitions. Second operand has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:07,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:07,180 INFO L93 Difference]: Finished difference Result 13738 states and 41509 transitions. [2022-03-03 17:58:07,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 17:58:07,180 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:58:07,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:07,207 INFO L225 Difference]: With dead ends: 13738 [2022-03-03 17:58:07,207 INFO L226 Difference]: Without dead ends: 13574 [2022-03-03 17:58:07,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=581, Invalid=3579, Unknown=0, NotChecked=0, Total=4160 [2022-03-03 17:58:07,208 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 343 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2057 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:07,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2057 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:58:07,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13574 states. [2022-03-03 17:58:07,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13574 to 11701. [2022-03-03 17:58:07,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11701 states, 11700 states have (on average 3.0413675213675213) internal successors, (35584), 11700 states have internal predecessors, (35584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:07,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11701 states to 11701 states and 35584 transitions. [2022-03-03 17:58:07,413 INFO L78 Accepts]: Start accepts. Automaton has 11701 states and 35584 transitions. Word has length 70 [2022-03-03 17:58:07,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:07,413 INFO L470 AbstractCegarLoop]: Abstraction has 11701 states and 35584 transitions. [2022-03-03 17:58:07,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:07,413 INFO L276 IsEmpty]: Start isEmpty. Operand 11701 states and 35584 transitions. [2022-03-03 17:58:07,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:58:07,430 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:07,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:07,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-03-03 17:58:07,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:07,630 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:07,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:07,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1052816633, now seen corresponding path program 101 times [2022-03-03 17:58:07,631 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:07,631 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618184783] [2022-03-03 17:58:07,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:07,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:07,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:07,744 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:07,744 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618184783] [2022-03-03 17:58:07,744 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618184783] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:58:07,744 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419273491] [2022-03-03 17:58:07,744 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:58:07,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:07,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:58:07,745 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:58:07,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-03-03 17:58:07,843 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:58:07,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:58:07,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 17:58:07,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:58:08,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:08,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:58:08,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:08,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419273491] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:58:08,489 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:58:08,489 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:58:08,489 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451787855] [2022-03-03 17:58:08,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:58:08,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:58:08,490 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:08,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:58:08,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:58:08,490 INFO L87 Difference]: Start difference. First operand 11701 states and 35584 transitions. Second operand has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:10,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:10,159 INFO L93 Difference]: Finished difference Result 16211 states and 49160 transitions. [2022-03-03 17:58:10,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-03 17:58:10,159 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:58:10,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:10,195 INFO L225 Difference]: With dead ends: 16211 [2022-03-03 17:58:10,196 INFO L226 Difference]: Without dead ends: 16125 [2022-03-03 17:58:10,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2396 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1475, Invalid=6715, Unknown=0, NotChecked=0, Total=8190 [2022-03-03 17:58:10,197 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 402 mSDsluCounter, 2976 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:10,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 3019 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1434 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:58:10,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16125 states. [2022-03-03 17:58:10,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16125 to 12377. [2022-03-03 17:58:10,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12377 states, 12376 states have (on average 3.055187459599224) internal successors, (37811), 12376 states have internal predecessors, (37811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:10,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12377 states to 12377 states and 37811 transitions. [2022-03-03 17:58:10,472 INFO L78 Accepts]: Start accepts. Automaton has 12377 states and 37811 transitions. Word has length 70 [2022-03-03 17:58:10,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:10,472 INFO L470 AbstractCegarLoop]: Abstraction has 12377 states and 37811 transitions. [2022-03-03 17:58:10,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:10,472 INFO L276 IsEmpty]: Start isEmpty. Operand 12377 states and 37811 transitions. [2022-03-03 17:58:10,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:58:10,492 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:10,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:10,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2022-03-03 17:58:10,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2022-03-03 17:58:10,693 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:10,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:10,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1065260363, now seen corresponding path program 102 times [2022-03-03 17:58:10,693 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:10,693 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672441107] [2022-03-03 17:58:10,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:10,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:10,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:10,807 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:10,807 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672441107] [2022-03-03 17:58:10,807 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672441107] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:58:10,807 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251510761] [2022-03-03 17:58:10,807 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:58:10,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:10,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:58:10,808 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:58:10,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-03-03 17:58:10,906 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:58:10,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:58:10,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:58:10,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:58:11,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:11,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:58:11,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:11,605 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251510761] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:58:11,605 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:58:11,605 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:58:11,605 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013338372] [2022-03-03 17:58:11,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:58:11,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:58:11,605 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:11,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:58:11,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=972, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:58:11,606 INFO L87 Difference]: Start difference. First operand 12377 states and 37811 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:14,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:14,519 INFO L93 Difference]: Finished difference Result 21245 states and 64502 transitions. [2022-03-03 17:58:14,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-03-03 17:58:14,519 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:58:14,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:14,560 INFO L225 Difference]: With dead ends: 21245 [2022-03-03 17:58:14,560 INFO L226 Difference]: Without dead ends: 21105 [2022-03-03 17:58:14,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4045 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1827, Invalid=9945, Unknown=0, NotChecked=0, Total=11772 [2022-03-03 17:58:14,561 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 599 mSDsluCounter, 2649 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:14,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [599 Valid, 2702 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:58:14,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21105 states. [2022-03-03 17:58:14,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21105 to 12685. [2022-03-03 17:58:14,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12685 states, 12684 states have (on average 3.054714601072217) internal successors, (38746), 12684 states have internal predecessors, (38746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:14,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12685 states to 12685 states and 38746 transitions. [2022-03-03 17:58:14,818 INFO L78 Accepts]: Start accepts. Automaton has 12685 states and 38746 transitions. Word has length 70 [2022-03-03 17:58:14,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:14,818 INFO L470 AbstractCegarLoop]: Abstraction has 12685 states and 38746 transitions. [2022-03-03 17:58:14,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:14,818 INFO L276 IsEmpty]: Start isEmpty. Operand 12685 states and 38746 transitions. [2022-03-03 17:58:14,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:58:14,838 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:14,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:14,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2022-03-03 17:58:15,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-03-03 17:58:15,048 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:15,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:15,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1448736071, now seen corresponding path program 103 times [2022-03-03 17:58:15,049 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:15,049 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474562441] [2022-03-03 17:58:15,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:15,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:15,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:15,170 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:15,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474562441] [2022-03-03 17:58:15,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474562441] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:58:15,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793590223] [2022-03-03 17:58:15,170 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:58:15,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:15,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:58:15,172 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:58:15,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-03-03 17:58:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:15,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:58:15,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:58:15,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:15,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:58:15,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:15,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793590223] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:58:15,996 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:58:15,996 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:58:15,996 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018509817] [2022-03-03 17:58:15,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:58:15,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:58:15,996 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:15,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:58:15,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=994, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:58:15,997 INFO L87 Difference]: Start difference. First operand 12685 states and 38746 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:18,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:18,316 INFO L93 Difference]: Finished difference Result 18355 states and 55702 transitions. [2022-03-03 17:58:18,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-03 17:58:18,316 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:58:18,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:18,350 INFO L225 Difference]: With dead ends: 18355 [2022-03-03 17:58:18,350 INFO L226 Difference]: Without dead ends: 18193 [2022-03-03 17:58:18,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2962 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1311, Invalid=8391, Unknown=0, NotChecked=0, Total=9702 [2022-03-03 17:58:18,351 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 374 mSDsluCounter, 3162 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 3203 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:18,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 3203 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1573 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:58:18,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18193 states. [2022-03-03 17:58:18,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18193 to 12725. [2022-03-03 17:58:18,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12725 states, 12724 states have (on average 3.054699779943414) internal successors, (38868), 12724 states have internal predecessors, (38868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:18,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12725 states to 12725 states and 38868 transitions. [2022-03-03 17:58:18,589 INFO L78 Accepts]: Start accepts. Automaton has 12725 states and 38868 transitions. Word has length 70 [2022-03-03 17:58:18,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:18,589 INFO L470 AbstractCegarLoop]: Abstraction has 12725 states and 38868 transitions. [2022-03-03 17:58:18,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:18,589 INFO L276 IsEmpty]: Start isEmpty. Operand 12725 states and 38868 transitions. [2022-03-03 17:58:18,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:58:18,608 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:18,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:18,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-03-03 17:58:18,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2022-03-03 17:58:18,809 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:18,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:18,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1493082771, now seen corresponding path program 104 times [2022-03-03 17:58:18,809 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:18,809 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888863845] [2022-03-03 17:58:18,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:18,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:18,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:18,937 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:18,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888863845] [2022-03-03 17:58:18,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888863845] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:58:18,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828207907] [2022-03-03 17:58:18,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:58:18,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:18,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:58:18,939 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:58:18,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-03-03 17:58:19,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:58:19,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:58:19,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:58:19,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:58:19,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:19,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:58:19,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:19,779 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828207907] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:58:19,779 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:58:19,779 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:58:19,779 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756002616] [2022-03-03 17:58:19,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:58:19,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:58:19,779 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:19,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:58:19,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:58:19,780 INFO L87 Difference]: Start difference. First operand 12725 states and 38868 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:21,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:21,840 INFO L93 Difference]: Finished difference Result 18145 states and 55212 transitions. [2022-03-03 17:58:21,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-03 17:58:21,840 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:58:21,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:21,940 INFO L225 Difference]: With dead ends: 18145 [2022-03-03 17:58:21,940 INFO L226 Difference]: Without dead ends: 17966 [2022-03-03 17:58:21,941 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 [2022-03-03 17:58:21,941 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 417 mSDsluCounter, 2738 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 2774 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:21,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 2774 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:58:21,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17966 states. [2022-03-03 17:58:22,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17966 to 12709. [2022-03-03 17:58:22,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12709 states, 12708 states have (on average 3.054453887315077) internal successors, (38816), 12708 states have internal predecessors, (38816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:22,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12709 states to 12709 states and 38816 transitions. [2022-03-03 17:58:22,192 INFO L78 Accepts]: Start accepts. Automaton has 12709 states and 38816 transitions. Word has length 70 [2022-03-03 17:58:22,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:22,192 INFO L470 AbstractCegarLoop]: Abstraction has 12709 states and 38816 transitions. [2022-03-03 17:58:22,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:22,193 INFO L276 IsEmpty]: Start isEmpty. Operand 12709 states and 38816 transitions. [2022-03-03 17:58:22,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:58:22,214 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:22,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:22,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-03-03 17:58:22,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-03-03 17:58:22,419 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:22,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:22,420 INFO L85 PathProgramCache]: Analyzing trace with hash 350262113, now seen corresponding path program 105 times [2022-03-03 17:58:22,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:22,420 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20408472] [2022-03-03 17:58:22,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:22,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:22,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:22,574 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:22,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20408472] [2022-03-03 17:58:22,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20408472] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:58:22,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535803347] [2022-03-03 17:58:22,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:58:22,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:22,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:58:22,588 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:58:22,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-03-03 17:58:22,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:58:22,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:58:22,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:58:22,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:58:22,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:22,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:58:23,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:23,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535803347] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:58:23,408 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:58:23,408 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:58:23,408 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034262489] [2022-03-03 17:58:23,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:58:23,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:58:23,409 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:23,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:58:23,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:58:23,409 INFO L87 Difference]: Start difference. First operand 12709 states and 38816 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:26,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:26,986 INFO L93 Difference]: Finished difference Result 19869 states and 60294 transitions. [2022-03-03 17:58:26,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-03-03 17:58:26,986 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:58:26,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:27,029 INFO L225 Difference]: With dead ends: 19869 [2022-03-03 17:58:27,029 INFO L226 Difference]: Without dead ends: 19713 [2022-03-03 17:58:27,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6585 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3046, Invalid=15044, Unknown=0, NotChecked=0, Total=18090 [2022-03-03 17:58:27,038 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 690 mSDsluCounter, 2231 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 2308 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:27,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 2308 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:58:27,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19713 states. [2022-03-03 17:58:27,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19713 to 12725. [2022-03-03 17:58:27,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12725 states, 12724 states have (on average 3.054699779943414) internal successors, (38868), 12724 states have internal predecessors, (38868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:27,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12725 states to 12725 states and 38868 transitions. [2022-03-03 17:58:27,345 INFO L78 Accepts]: Start accepts. Automaton has 12725 states and 38868 transitions. Word has length 70 [2022-03-03 17:58:27,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:27,345 INFO L470 AbstractCegarLoop]: Abstraction has 12725 states and 38868 transitions. [2022-03-03 17:58:27,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:27,345 INFO L276 IsEmpty]: Start isEmpty. Operand 12725 states and 38868 transitions. [2022-03-03 17:58:27,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:58:27,366 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:27,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:27,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-03-03 17:58:27,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2022-03-03 17:58:27,567 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:27,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:27,567 INFO L85 PathProgramCache]: Analyzing trace with hash 337818383, now seen corresponding path program 106 times [2022-03-03 17:58:27,567 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:27,567 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53711577] [2022-03-03 17:58:27,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:27,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:27,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:27,684 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:27,684 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53711577] [2022-03-03 17:58:27,684 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53711577] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:58:27,684 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752227300] [2022-03-03 17:58:27,684 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:58:27,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:27,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:58:27,685 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:58:27,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-03-03 17:58:27,783 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:58:27,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:58:27,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-03 17:58:27,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:58:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:28,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:58:28,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:28,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752227300] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:58:28,380 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:58:28,380 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2022-03-03 17:58:28,381 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600570553] [2022-03-03 17:58:28,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:58:28,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:58:28,381 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:28,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:58:28,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:58:28,381 INFO L87 Difference]: Start difference. First operand 12725 states and 38868 transitions. Second operand has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:30,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:30,464 INFO L93 Difference]: Finished difference Result 17204 states and 51997 transitions. [2022-03-03 17:58:30,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-03 17:58:30,465 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:58:30,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:30,497 INFO L225 Difference]: With dead ends: 17204 [2022-03-03 17:58:30,497 INFO L226 Difference]: Without dead ends: 17088 [2022-03-03 17:58:30,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3051 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1531, Invalid=8171, Unknown=0, NotChecked=0, Total=9702 [2022-03-03 17:58:30,498 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 476 mSDsluCounter, 2877 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 1766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:30,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 2978 Invalid, 1766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1681 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:58:30,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17088 states. [2022-03-03 17:58:30,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17088 to 13025. [2022-03-03 17:58:30,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13025 states, 13024 states have (on average 3.0553593366093366) internal successors, (39793), 13024 states have internal predecessors, (39793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:30,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13025 states to 13025 states and 39793 transitions. [2022-03-03 17:58:30,763 INFO L78 Accepts]: Start accepts. Automaton has 13025 states and 39793 transitions. Word has length 70 [2022-03-03 17:58:30,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:30,763 INFO L470 AbstractCegarLoop]: Abstraction has 13025 states and 39793 transitions. [2022-03-03 17:58:30,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:30,763 INFO L276 IsEmpty]: Start isEmpty. Operand 13025 states and 39793 transitions. [2022-03-03 17:58:30,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:58:30,786 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:30,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:30,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2022-03-03 17:58:30,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2022-03-03 17:58:30,986 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:30,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:30,986 INFO L85 PathProgramCache]: Analyzing trace with hash -209379389, now seen corresponding path program 107 times [2022-03-03 17:58:30,987 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:30,987 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080205522] [2022-03-03 17:58:30,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:30,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:31,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:31,115 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:31,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080205522] [2022-03-03 17:58:31,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080205522] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:58:31,116 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749719629] [2022-03-03 17:58:31,116 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:58:31,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:31,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:58:31,117 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:58:31,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-03-03 17:58:31,216 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:58:31,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:58:31,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 17:58:31,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:58:31,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:31,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:58:31,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:31,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749719629] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:58:31,861 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:58:31,861 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:58:31,861 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69568539] [2022-03-03 17:58:31,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:58:31,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:58:31,861 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:31,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:58:31,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=924, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:58:31,861 INFO L87 Difference]: Start difference. First operand 13025 states and 39793 transitions. Second operand has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:33,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:33,247 INFO L93 Difference]: Finished difference Result 16384 states and 49590 transitions. [2022-03-03 17:58:33,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-03 17:58:33,247 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:58:33,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:33,282 INFO L225 Difference]: With dead ends: 16384 [2022-03-03 17:58:33,282 INFO L226 Difference]: Without dead ends: 16301 [2022-03-03 17:58:33,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1495 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=971, Invalid=4579, Unknown=0, NotChecked=0, Total=5550 [2022-03-03 17:58:33,283 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 347 mSDsluCounter, 2368 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 2432 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:33,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 2432 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:58:33,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16301 states. [2022-03-03 17:58:33,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16301 to 12957. [2022-03-03 17:58:33,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12957 states, 12956 states have (on average 3.0548008644643407) internal successors, (39578), 12956 states have internal predecessors, (39578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:33,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12957 states to 12957 states and 39578 transitions. [2022-03-03 17:58:33,579 INFO L78 Accepts]: Start accepts. Automaton has 12957 states and 39578 transitions. Word has length 70 [2022-03-03 17:58:33,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:33,579 INFO L470 AbstractCegarLoop]: Abstraction has 12957 states and 39578 transitions. [2022-03-03 17:58:33,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:33,579 INFO L276 IsEmpty]: Start isEmpty. Operand 12957 states and 39578 transitions. [2022-03-03 17:58:33,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:58:33,600 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:33,600 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:33,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-03-03 17:58:33,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:33,801 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:33,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:33,801 INFO L85 PathProgramCache]: Analyzing trace with hash -165032689, now seen corresponding path program 108 times [2022-03-03 17:58:33,801 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:33,801 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230465047] [2022-03-03 17:58:33,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:33,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:33,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:33,916 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:33,916 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230465047] [2022-03-03 17:58:33,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230465047] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:58:33,916 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620481664] [2022-03-03 17:58:33,916 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:58:33,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:33,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:58:33,918 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:58:33,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-03-03 17:58:34,021 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:58:34,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:58:34,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 17:58:34,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:58:34,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:34,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:58:34,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:34,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620481664] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:58:34,665 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:58:34,665 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:58:34,665 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362894082] [2022-03-03 17:58:34,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:58:34,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:58:34,665 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:34,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:58:34,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:58:34,666 INFO L87 Difference]: Start difference. First operand 12957 states and 39578 transitions. Second operand has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:35,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:35,961 INFO L93 Difference]: Finished difference Result 16263 states and 49223 transitions. [2022-03-03 17:58:35,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-03 17:58:35,962 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:58:35,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:36,004 INFO L225 Difference]: With dead ends: 16263 [2022-03-03 17:58:36,005 INFO L226 Difference]: Without dead ends: 16144 [2022-03-03 17:58:36,005 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 [2022-03-03 17:58:36,006 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 358 mSDsluCounter, 2483 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 2510 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:36,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 2510 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:58:36,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16144 states. [2022-03-03 17:58:36,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16144 to 12821. [2022-03-03 17:58:36,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12821 states, 12820 states have (on average 3.0533541341653665) internal successors, (39144), 12820 states have internal predecessors, (39144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:36,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12821 states to 12821 states and 39144 transitions. [2022-03-03 17:58:36,389 INFO L78 Accepts]: Start accepts. Automaton has 12821 states and 39144 transitions. Word has length 70 [2022-03-03 17:58:36,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:36,389 INFO L470 AbstractCegarLoop]: Abstraction has 12821 states and 39144 transitions. [2022-03-03 17:58:36,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:36,389 INFO L276 IsEmpty]: Start isEmpty. Operand 12821 states and 39144 transitions. [2022-03-03 17:58:36,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:58:36,410 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:36,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:36,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2022-03-03 17:58:36,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:36,611 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:36,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:36,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1320297077, now seen corresponding path program 109 times [2022-03-03 17:58:36,611 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:36,611 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34194750] [2022-03-03 17:58:36,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:36,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:36,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:36,734 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:36,734 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34194750] [2022-03-03 17:58:36,734 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34194750] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:58:36,734 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138707500] [2022-03-03 17:58:36,734 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:58:36,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:36,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:58:36,736 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:58:36,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-03-03 17:58:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:36,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:58:36,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:58:37,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:37,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:58:37,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:37,546 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138707500] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:58:37,547 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:58:37,547 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:58:37,547 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110995275] [2022-03-03 17:58:37,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:58:37,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:58:37,547 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:37,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:58:37,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:58:37,547 INFO L87 Difference]: Start difference. First operand 12821 states and 39144 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:41,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:41,808 INFO L93 Difference]: Finished difference Result 22213 states and 67364 transitions. [2022-03-03 17:58:41,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-03-03 17:58:41,808 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:58:41,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:41,857 INFO L225 Difference]: With dead ends: 22213 [2022-03-03 17:58:41,857 INFO L226 Difference]: Without dead ends: 22073 [2022-03-03 17:58:41,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7399 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3723, Invalid=15737, Unknown=0, NotChecked=0, Total=19460 [2022-03-03 17:58:41,858 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 755 mSDsluCounter, 2270 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:41,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 2352 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:58:41,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22073 states. [2022-03-03 17:58:42,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22073 to 13585. [2022-03-03 17:58:42,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13585 states, 13584 states have (on average 3.0480712603062425) internal successors, (41405), 13584 states have internal predecessors, (41405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:42,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13585 states to 13585 states and 41405 transitions. [2022-03-03 17:58:42,204 INFO L78 Accepts]: Start accepts. Automaton has 13585 states and 41405 transitions. Word has length 70 [2022-03-03 17:58:42,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:42,204 INFO L470 AbstractCegarLoop]: Abstraction has 13585 states and 41405 transitions. [2022-03-03 17:58:42,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:42,204 INFO L276 IsEmpty]: Start isEmpty. Operand 13585 states and 41405 transitions. [2022-03-03 17:58:42,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:58:42,227 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:42,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:42,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-03-03 17:58:42,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:42,427 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:42,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:42,428 INFO L85 PathProgramCache]: Analyzing trace with hash -2086967501, now seen corresponding path program 110 times [2022-03-03 17:58:42,428 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:42,428 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711224131] [2022-03-03 17:58:42,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:42,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:42,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:42,540 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:42,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711224131] [2022-03-03 17:58:42,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711224131] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:58:42,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490460042] [2022-03-03 17:58:42,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:58:42,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:42,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:58:42,541 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:58:42,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-03-03 17:58:42,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:58:42,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:58:42,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:58:42,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:58:42,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:42,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:58:43,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:43,387 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490460042] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:58:43,387 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:58:43,387 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:58:43,387 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061866846] [2022-03-03 17:58:43,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:58:43,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:58:43,387 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:43,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:58:43,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:58:43,388 INFO L87 Difference]: Start difference. First operand 13585 states and 41405 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:44,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:44,709 INFO L93 Difference]: Finished difference Result 18264 states and 55207 transitions. [2022-03-03 17:58:44,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 17:58:44,710 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:58:44,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:44,750 INFO L225 Difference]: With dead ends: 18264 [2022-03-03 17:58:44,751 INFO L226 Difference]: Without dead ends: 18036 [2022-03-03 17:58:44,751 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 [2022-03-03 17:58:44,752 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 408 mSDsluCounter, 2435 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:44,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 2469 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:58:44,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18036 states. [2022-03-03 17:58:45,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18036 to 13497. [2022-03-03 17:58:45,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13497 states, 13496 states have (on average 3.04794013040901) internal successors, (41135), 13496 states have internal predecessors, (41135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:45,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13497 states to 13497 states and 41135 transitions. [2022-03-03 17:58:45,075 INFO L78 Accepts]: Start accepts. Automaton has 13497 states and 41135 transitions. Word has length 70 [2022-03-03 17:58:45,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:45,075 INFO L470 AbstractCegarLoop]: Abstraction has 13497 states and 41135 transitions. [2022-03-03 17:58:45,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:45,076 INFO L276 IsEmpty]: Start isEmpty. Operand 13497 states and 41135 transitions. [2022-03-03 17:58:45,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:58:45,097 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:45,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:45,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2022-03-03 17:58:45,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:45,298 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:45,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:45,298 INFO L85 PathProgramCache]: Analyzing trace with hash 769385419, now seen corresponding path program 111 times [2022-03-03 17:58:45,298 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:45,298 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161963685] [2022-03-03 17:58:45,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:45,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:45,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:45,411 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:45,411 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161963685] [2022-03-03 17:58:45,411 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161963685] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:58:45,411 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796493137] [2022-03-03 17:58:45,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:58:45,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:45,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:58:45,413 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:58:45,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-03-03 17:58:45,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:58:45,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:58:45,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:58:45,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:58:45,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:45,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:58:46,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:46,224 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796493137] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:58:46,224 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:58:46,224 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:58:46,224 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845476353] [2022-03-03 17:58:46,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:58:46,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:58:46,224 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:46,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:58:46,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:58:46,225 INFO L87 Difference]: Start difference. First operand 13497 states and 41135 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:47,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:47,460 INFO L93 Difference]: Finished difference Result 18174 states and 54923 transitions. [2022-03-03 17:58:47,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-03 17:58:47,461 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:58:47,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:47,498 INFO L225 Difference]: With dead ends: 18174 [2022-03-03 17:58:47,499 INFO L226 Difference]: Without dead ends: 17901 [2022-03-03 17:58:47,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1391 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=727, Invalid=4103, Unknown=0, NotChecked=0, Total=4830 [2022-03-03 17:58:47,500 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 434 mSDsluCounter, 2678 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:47,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 2684 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:58:47,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17901 states. [2022-03-03 17:58:47,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17901 to 13481. [2022-03-03 17:58:47,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13481 states, 13480 states have (on average 3.047106824925816) internal successors, (41075), 13480 states have internal predecessors, (41075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:47,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13481 states to 13481 states and 41075 transitions. [2022-03-03 17:58:47,861 INFO L78 Accepts]: Start accepts. Automaton has 13481 states and 41075 transitions. Word has length 70 [2022-03-03 17:58:47,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:47,861 INFO L470 AbstractCegarLoop]: Abstraction has 13481 states and 41075 transitions. [2022-03-03 17:58:47,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:47,861 INFO L276 IsEmpty]: Start isEmpty. Operand 13481 states and 41075 transitions. [2022-03-03 17:58:47,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:58:47,883 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:47,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:47,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-03-03 17:58:48,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:48,084 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:48,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:48,085 INFO L85 PathProgramCache]: Analyzing trace with hash -144331505, now seen corresponding path program 112 times [2022-03-03 17:58:48,085 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:48,085 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430514922] [2022-03-03 17:58:48,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:48,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:48,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:48,199 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:48,199 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430514922] [2022-03-03 17:58:48,199 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430514922] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:58:48,199 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661238245] [2022-03-03 17:58:48,199 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:58:48,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:48,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:58:48,201 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:58:48,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-03-03 17:58:48,305 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:58:48,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:58:48,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 17:58:48,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:58:48,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:48,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:58:48,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:48,898 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661238245] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:58:48,898 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:58:48,898 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:58:48,899 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698832011] [2022-03-03 17:58:48,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:58:48,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:58:48,899 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:48,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:58:48,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=948, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:58:48,899 INFO L87 Difference]: Start difference. First operand 13481 states and 41075 transitions. Second operand has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:49,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:49,799 INFO L93 Difference]: Finished difference Result 15223 states and 45902 transitions. [2022-03-03 17:58:49,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 17:58:49,800 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:58:49,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:49,832 INFO L225 Difference]: With dead ends: 15223 [2022-03-03 17:58:49,832 INFO L226 Difference]: Without dead ends: 15100 [2022-03-03 17:58:49,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=396, Invalid=2796, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 17:58:49,833 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 359 mSDsluCounter, 2752 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:49,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 2761 Invalid, 1422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1393 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:58:49,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15100 states. [2022-03-03 17:58:50,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15100 to 13613. [2022-03-03 17:58:50,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13613 states, 13612 states have (on average 3.0462826917425803) internal successors, (41466), 13612 states have internal predecessors, (41466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:50,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13613 states to 13613 states and 41466 transitions. [2022-03-03 17:58:50,097 INFO L78 Accepts]: Start accepts. Automaton has 13613 states and 41466 transitions. Word has length 70 [2022-03-03 17:58:50,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:50,097 INFO L470 AbstractCegarLoop]: Abstraction has 13613 states and 41466 transitions. [2022-03-03 17:58:50,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:50,098 INFO L276 IsEmpty]: Start isEmpty. Operand 13613 states and 41466 transitions. [2022-03-03 17:58:50,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:58:50,121 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:50,121 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] [2022-03-03 17:58:50,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2022-03-03 17:58:50,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2022-03-03 17:58:50,323 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:50,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:50,324 INFO L85 PathProgramCache]: Analyzing trace with hash 776265127, now seen corresponding path program 113 times [2022-03-03 17:58:50,324 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:50,324 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966355815] [2022-03-03 17:58:50,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:50,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:50,446 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:50,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966355815] [2022-03-03 17:58:50,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966355815] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:58:50,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995048406] [2022-03-03 17:58:50,446 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:58:50,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:50,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:58:50,447 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:58:50,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-03-03 17:58:50,551 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:58:50,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:58:50,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:58:50,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:58:50,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:50,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:58:51,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:51,347 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995048406] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:58:51,347 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:58:51,347 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:58:51,347 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755275474] [2022-03-03 17:58:51,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:58:51,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:58:51,347 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:51,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:58:51,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:58:51,348 INFO L87 Difference]: Start difference. First operand 13613 states and 41466 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:53,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:53,293 INFO L93 Difference]: Finished difference Result 19314 states and 58208 transitions. [2022-03-03 17:58:53,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-03 17:58:53,293 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:58:53,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:53,339 INFO L225 Difference]: With dead ends: 19314 [2022-03-03 17:58:53,339 INFO L226 Difference]: Without dead ends: 19188 [2022-03-03 17:58:53,340 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 [2022-03-03 17:58:53,340 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 402 mSDsluCounter, 2632 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 2664 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:53,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 2664 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:58:53,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19188 states. [2022-03-03 17:58:53,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19188 to 13641. [2022-03-03 17:58:53,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13641 states, 13640 states have (on average 3.045967741935484) internal successors, (41547), 13640 states have internal predecessors, (41547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:53,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13641 states to 13641 states and 41547 transitions. [2022-03-03 17:58:53,666 INFO L78 Accepts]: Start accepts. Automaton has 13641 states and 41547 transitions. Word has length 70 [2022-03-03 17:58:53,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:53,666 INFO L470 AbstractCegarLoop]: Abstraction has 13641 states and 41547 transitions. [2022-03-03 17:58:53,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:53,666 INFO L276 IsEmpty]: Start isEmpty. Operand 13641 states and 41547 transitions. [2022-03-03 17:58:53,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:58:53,686 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:53,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:58:53,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-03-03 17:58:53,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:53,891 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:53,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:53,892 INFO L85 PathProgramCache]: Analyzing trace with hash 737868383, now seen corresponding path program 114 times [2022-03-03 17:58:53,892 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:53,892 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710095844] [2022-03-03 17:58:53,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:53,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:54,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:54,017 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:54,017 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710095844] [2022-03-03 17:58:54,017 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710095844] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:58:54,017 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876866736] [2022-03-03 17:58:54,017 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:58:54,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:54,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:58:54,019 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:58:54,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-03-03 17:58:54,135 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:58:54,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:58:54,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:58:54,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:58:54,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:54,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:58:54,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:54,852 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876866736] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:58:54,852 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:58:54,853 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:58:54,853 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290800699] [2022-03-03 17:58:54,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:58:54,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:58:54,853 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:54,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:58:54,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:58:54,853 INFO L87 Difference]: Start difference. First operand 13641 states and 41547 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:56,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:58:56,747 INFO L93 Difference]: Finished difference Result 19962 states and 60120 transitions. [2022-03-03 17:58:56,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-03 17:58:56,747 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:58:56,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:58:56,789 INFO L225 Difference]: With dead ends: 19962 [2022-03-03 17:58:56,790 INFO L226 Difference]: Without dead ends: 19822 [2022-03-03 17:58:56,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1846 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=799, Invalid=5363, Unknown=0, NotChecked=0, Total=6162 [2022-03-03 17:58:56,790 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 444 mSDsluCounter, 2464 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 2497 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:58:56,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 2497 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:58:56,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19822 states. [2022-03-03 17:58:57,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19822 to 13653. [2022-03-03 17:58:57,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13653 states, 13652 states have (on average 3.0465865807207737) internal successors, (41592), 13652 states have internal predecessors, (41592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:57,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13653 states to 13653 states and 41592 transitions. [2022-03-03 17:58:57,089 INFO L78 Accepts]: Start accepts. Automaton has 13653 states and 41592 transitions. Word has length 70 [2022-03-03 17:58:57,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:58:57,090 INFO L470 AbstractCegarLoop]: Abstraction has 13653 states and 41592 transitions. [2022-03-03 17:58:57,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:58:57,090 INFO L276 IsEmpty]: Start isEmpty. Operand 13653 states and 41592 transitions. [2022-03-03 17:58:57,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:58:57,112 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:58:57,112 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, 1, 1, 1, 1] [2022-03-03 17:58:57,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2022-03-03 17:58:57,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2022-03-03 17:58:57,313 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:58:57,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:58:57,313 INFO L85 PathProgramCache]: Analyzing trace with hash -321983337, now seen corresponding path program 115 times [2022-03-03 17:58:57,313 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:58:57,314 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126131633] [2022-03-03 17:58:57,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:58:57,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:58:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:57,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:57,442 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:58:57,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126131633] [2022-03-03 17:58:57,443 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126131633] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:58:57,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261694464] [2022-03-03 17:58:57,443 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:58:57,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:58:57,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:58:57,444 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:58:57,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-03-03 17:58:57,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:58:57,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:58:57,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:58:57,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:57,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:58:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:58:58,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261694464] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:58:58,259 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:58:58,259 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:58:58,259 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447525722] [2022-03-03 17:58:58,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:58:58,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:58:58,259 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:58:58,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:58:58,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:58:58,259 INFO L87 Difference]: Start difference. First operand 13653 states and 41592 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:01,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:01,327 INFO L93 Difference]: Finished difference Result 20542 states and 61961 transitions. [2022-03-03 17:59:01,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-03-03 17:59:01,327 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:59:01,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:01,374 INFO L225 Difference]: With dead ends: 20542 [2022-03-03 17:59:01,374 INFO L226 Difference]: Without dead ends: 20416 [2022-03-03 17:59:01,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4450 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1732, Invalid=11150, Unknown=0, NotChecked=0, Total=12882 [2022-03-03 17:59:01,376 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 594 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:01,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 2081 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:59:01,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20416 states. [2022-03-03 17:59:01,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20416 to 13721. [2022-03-03 17:59:01,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13721 states, 13720 states have (on average 3.0462827988338192) internal successors, (41795), 13720 states have internal predecessors, (41795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:01,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13721 states to 13721 states and 41795 transitions. [2022-03-03 17:59:01,693 INFO L78 Accepts]: Start accepts. Automaton has 13721 states and 41795 transitions. Word has length 70 [2022-03-03 17:59:01,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:01,693 INFO L470 AbstractCegarLoop]: Abstraction has 13721 states and 41795 transitions. [2022-03-03 17:59:01,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:01,693 INFO L276 IsEmpty]: Start isEmpty. Operand 13721 states and 41795 transitions. [2022-03-03 17:59:01,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:59:01,717 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:01,717 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:01,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2022-03-03 17:59:01,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2022-03-03 17:59:01,918 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:01,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:01,918 INFO L85 PathProgramCache]: Analyzing trace with hash -360380081, now seen corresponding path program 116 times [2022-03-03 17:59:01,918 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:01,918 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755022679] [2022-03-03 17:59:01,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:01,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:02,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:02,038 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:02,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755022679] [2022-03-03 17:59:02,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755022679] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:59:02,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223494917] [2022-03-03 17:59:02,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:59:02,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:59:02,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:59:02,039 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:59:02,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-03-03 17:59:02,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:59:02,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:59:02,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:59:02,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:59:02,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:02,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:59:02,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:02,877 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223494917] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:59:02,877 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:59:02,877 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:59:02,877 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888810523] [2022-03-03 17:59:02,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:59:02,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:59:02,877 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:02,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:59:02,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:59:02,878 INFO L87 Difference]: Start difference. First operand 13721 states and 41795 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:06,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:06,121 INFO L93 Difference]: Finished difference Result 21226 states and 63940 transitions. [2022-03-03 17:59:06,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-03-03 17:59:06,121 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:59:06,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:06,171 INFO L225 Difference]: With dead ends: 21226 [2022-03-03 17:59:06,171 INFO L226 Difference]: Without dead ends: 21086 [2022-03-03 17:59:06,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4333 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1756, Invalid=10900, Unknown=0, NotChecked=0, Total=12656 [2022-03-03 17:59:06,172 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 609 mSDsluCounter, 2565 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:06,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 2613 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:59:06,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21086 states. [2022-03-03 17:59:06,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21086 to 13689. [2022-03-03 17:59:06,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13689 states, 13688 states have (on average 3.0466832261835184) internal successors, (41703), 13688 states have internal predecessors, (41703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:06,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13689 states to 13689 states and 41703 transitions. [2022-03-03 17:59:06,499 INFO L78 Accepts]: Start accepts. Automaton has 13689 states and 41703 transitions. Word has length 70 [2022-03-03 17:59:06,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:06,499 INFO L470 AbstractCegarLoop]: Abstraction has 13689 states and 41703 transitions. [2022-03-03 17:59:06,499 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) [2022-03-03 17:59:06,499 INFO L276 IsEmpty]: Start isEmpty. Operand 13689 states and 41703 transitions. [2022-03-03 17:59:06,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:59:06,521 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:06,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:06,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2022-03-03 17:59:06,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:59:06,721 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:06,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:06,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1326068461, now seen corresponding path program 117 times [2022-03-03 17:59:06,722 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:06,722 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910906427] [2022-03-03 17:59:06,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:06,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:06,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:06,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:06,843 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:06,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910906427] [2022-03-03 17:59:06,843 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910906427] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:59:06,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246063437] [2022-03-03 17:59:06,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:59:06,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:59:06,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:59:06,845 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:59:06,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-03-03 17:59:06,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:59:06,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:59:06,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:59:06,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:59:07,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:07,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:59:07,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:07,708 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246063437] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:59:07,708 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:59:07,708 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:59:07,708 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587157376] [2022-03-03 17:59:07,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:59:07,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:59:07,709 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:07,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:59:07,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=976, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:59:07,709 INFO L87 Difference]: Start difference. First operand 13689 states and 41703 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:11,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:11,660 INFO L93 Difference]: Finished difference Result 23633 states and 71229 transitions. [2022-03-03 17:59:11,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-03-03 17:59:11,660 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 [2022-03-03 17:59:11,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:11,714 INFO L225 Difference]: With dead ends: 23633 [2022-03-03 17:59:11,714 INFO L226 Difference]: Without dead ends: 23493 [2022-03-03 17:59:11,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6496 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2719, Invalid=14573, Unknown=0, NotChecked=0, Total=17292 [2022-03-03 17:59:11,716 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 749 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:11,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 2538 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:59:11,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23493 states. [2022-03-03 17:59:12,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23493 to 13777. [2022-03-03 17:59:12,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13777 states, 13776 states have (on average 3.060177119628339) internal successors, (42157), 13776 states have internal predecessors, (42157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:12,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13777 states to 13777 states and 42157 transitions. [2022-03-03 17:59:12,105 INFO L78 Accepts]: Start accepts. Automaton has 13777 states and 42157 transitions. Word has length 70 [2022-03-03 17:59:12,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:12,105 INFO L470 AbstractCegarLoop]: Abstraction has 13777 states and 42157 transitions. [2022-03-03 17:59:12,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:12,106 INFO L276 IsEmpty]: Start isEmpty. Operand 13777 states and 42157 transitions. [2022-03-03 17:59:12,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:59:12,128 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:12,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:12,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2022-03-03 17:59:12,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:59:12,329 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:12,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:12,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1942574281, now seen corresponding path program 118 times [2022-03-03 17:59:12,330 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:12,330 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507474879] [2022-03-03 17:59:12,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:12,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:12,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:12,449 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:12,449 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507474879] [2022-03-03 17:59:12,449 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507474879] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:59:12,449 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498291966] [2022-03-03 17:59:12,449 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:59:12,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:59:12,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:59:12,451 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:59:12,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-03-03 17:59:12,558 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:59:12,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:59:12,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 17:59:12,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:59:12,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:12,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:59:13,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:13,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498291966] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:59:13,174 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:59:13,175 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:59:13,175 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772726510] [2022-03-03 17:59:13,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:59:13,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:59:13,175 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:13,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:59:13,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:59:13,175 INFO L87 Difference]: Start difference. First operand 13777 states and 42157 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:16,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:16,696 INFO L93 Difference]: Finished difference Result 18748 states and 56815 transitions. [2022-03-03 17:59:16,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-03-03 17:59:16,696 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:59:16,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:16,733 INFO L225 Difference]: With dead ends: 18748 [2022-03-03 17:59:16,733 INFO L226 Difference]: Without dead ends: 18670 [2022-03-03 17:59:16,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8162 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2949, Invalid=20307, Unknown=0, NotChecked=0, Total=23256 [2022-03-03 17:59:16,734 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 655 mSDsluCounter, 3332 mSDsCounter, 0 mSdLazyCounter, 2045 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 3367 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:16,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 3367 Invalid, 2156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2045 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:59:16,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18670 states. [2022-03-03 17:59:16,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18670 to 14421. [2022-03-03 17:59:17,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14421 states, 14420 states have (on average 3.0624133148404993) internal successors, (44160), 14420 states have internal predecessors, (44160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:17,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14421 states to 14421 states and 44160 transitions. [2022-03-03 17:59:17,039 INFO L78 Accepts]: Start accepts. Automaton has 14421 states and 44160 transitions. Word has length 70 [2022-03-03 17:59:17,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:17,039 INFO L470 AbstractCegarLoop]: Abstraction has 14421 states and 44160 transitions. [2022-03-03 17:59:17,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:17,039 INFO L276 IsEmpty]: Start isEmpty. Operand 14421 states and 44160 transitions. [2022-03-03 17:59:17,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:59:17,064 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:17,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:17,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2022-03-03 17:59:17,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable150 [2022-03-03 17:59:17,264 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:17,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:17,265 INFO L85 PathProgramCache]: Analyzing trace with hash -2012351217, now seen corresponding path program 119 times [2022-03-03 17:59:17,265 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:17,265 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936246566] [2022-03-03 17:59:17,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:17,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:17,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:17,388 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:17,389 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936246566] [2022-03-03 17:59:17,389 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936246566] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:59:17,389 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326147284] [2022-03-03 17:59:17,389 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:59:17,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:59:17,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:59:17,390 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:59:17,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-03-03 17:59:17,497 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:59:17,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:59:17,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 17:59:17,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:59:17,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:17,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:59:18,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:18,101 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326147284] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:59:18,101 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:59:18,101 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:59:18,101 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271400410] [2022-03-03 17:59:18,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:59:18,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:59:18,101 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:18,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:59:18,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:59:18,102 INFO L87 Difference]: Start difference. First operand 14421 states and 44160 transitions. Second operand has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:19,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:19,228 INFO L93 Difference]: Finished difference Result 15479 states and 47015 transitions. [2022-03-03 17:59:19,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 17:59:19,228 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:59:19,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:19,261 INFO L225 Difference]: With dead ends: 15479 [2022-03-03 17:59:19,261 INFO L226 Difference]: Without dead ends: 15416 [2022-03-03 17:59:19,262 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 [2022-03-03 17:59:19,262 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 391 mSDsluCounter, 2395 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:19,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 2456 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:59:19,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15416 states. [2022-03-03 17:59:19,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15416 to 14377. [2022-03-03 17:59:19,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14377 states, 14376 states have (on average 3.062813021702838) internal successors, (44031), 14376 states have internal predecessors, (44031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:19,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14377 states to 14377 states and 44031 transitions. [2022-03-03 17:59:19,578 INFO L78 Accepts]: Start accepts. Automaton has 14377 states and 44031 transitions. Word has length 70 [2022-03-03 17:59:19,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:19,578 INFO L470 AbstractCegarLoop]: Abstraction has 14377 states and 44031 transitions. [2022-03-03 17:59:19,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:19,578 INFO L276 IsEmpty]: Start isEmpty. Operand 14377 states and 44031 transitions. [2022-03-03 17:59:19,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:59:19,602 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:19,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:19,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2022-03-03 17:59:19,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:59:19,802 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:19,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:19,803 INFO L85 PathProgramCache]: Analyzing trace with hash 570526483, now seen corresponding path program 120 times [2022-03-03 17:59:19,803 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:19,803 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591651588] [2022-03-03 17:59:19,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:19,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:19,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:19,925 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:19,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591651588] [2022-03-03 17:59:19,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591651588] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:59:19,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262614019] [2022-03-03 17:59:19,925 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:59:19,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:59:19,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:59:19,926 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:59:19,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-03-03 17:59:20,039 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:59:20,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:59:20,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:59:20,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:59:20,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:20,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:59:20,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:20,771 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262614019] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:59:20,771 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:59:20,771 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:59:20,771 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144731320] [2022-03-03 17:59:20,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:59:20,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:59:20,772 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:20,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:59:20,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:59:20,772 INFO L87 Difference]: Start difference. First operand 14377 states and 44031 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:22,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:22,692 INFO L93 Difference]: Finished difference Result 20394 states and 61586 transitions. [2022-03-03 17:59:22,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-03 17:59:22,692 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:59:22,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:22,736 INFO L225 Difference]: With dead ends: 20394 [2022-03-03 17:59:22,736 INFO L226 Difference]: Without dead ends: 20260 [2022-03-03 17:59:22,737 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 [2022-03-03 17:59:22,738 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 389 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 2742 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:22,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 2742 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:59:22,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20260 states. [2022-03-03 17:59:23,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20260 to 14373. [2022-03-03 17:59:23,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14373 states, 14372 states have (on average 3.0631784024492066) internal successors, (44024), 14372 states have internal predecessors, (44024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:23,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14373 states to 14373 states and 44024 transitions. [2022-03-03 17:59:23,107 INFO L78 Accepts]: Start accepts. Automaton has 14373 states and 44024 transitions. Word has length 70 [2022-03-03 17:59:23,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:23,107 INFO L470 AbstractCegarLoop]: Abstraction has 14373 states and 44024 transitions. [2022-03-03 17:59:23,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:23,107 INFO L276 IsEmpty]: Start isEmpty. Operand 14373 states and 44024 transitions. [2022-03-03 17:59:23,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:59:23,133 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:23,133 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] [2022-03-03 17:59:23,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-03-03 17:59:23,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:59:23,333 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:23,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:23,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1182430989, now seen corresponding path program 121 times [2022-03-03 17:59:23,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:23,334 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458052757] [2022-03-03 17:59:23,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:23,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:23,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:23,452 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:23,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458052757] [2022-03-03 17:59:23,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458052757] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:59:23,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499740767] [2022-03-03 17:59:23,452 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:59:23,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:59:23,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:59:23,453 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:59:23,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-03-03 17:59:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:23,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:59:23,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:59:23,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:23,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:59:24,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:24,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499740767] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:59:24,273 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:59:24,274 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:59:24,274 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590330091] [2022-03-03 17:59:24,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:59:24,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:59:24,274 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:24,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:59:24,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:59:24,275 INFO L87 Difference]: Start difference. First operand 14373 states and 44024 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:26,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:26,251 INFO L93 Difference]: Finished difference Result 20356 states and 61496 transitions. [2022-03-03 17:59:26,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-03 17:59:26,251 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:59:26,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:26,298 INFO L225 Difference]: With dead ends: 20356 [2022-03-03 17:59:26,299 INFO L226 Difference]: Without dead ends: 20206 [2022-03-03 17:59:26,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=924, Invalid=6048, Unknown=0, NotChecked=0, Total=6972 [2022-03-03 17:59:26,300 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 450 mSDsluCounter, 2831 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 2857 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:26,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 2857 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:59:26,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20206 states. [2022-03-03 17:59:26,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20206 to 14345. [2022-03-03 17:59:26,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14345 states, 14344 states have (on average 3.0632320133853876) internal successors, (43939), 14344 states have internal predecessors, (43939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:26,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14345 states to 14345 states and 43939 transitions. [2022-03-03 17:59:26,686 INFO L78 Accepts]: Start accepts. Automaton has 14345 states and 43939 transitions. Word has length 70 [2022-03-03 17:59:26,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:26,687 INFO L470 AbstractCegarLoop]: Abstraction has 14345 states and 43939 transitions. [2022-03-03 17:59:26,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:26,687 INFO L276 IsEmpty]: Start isEmpty. Operand 14345 states and 43939 transitions. [2022-03-03 17:59:26,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:59:26,710 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:26,710 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:26,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2022-03-03 17:59:26,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:59:26,910 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:26,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:26,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1226777689, now seen corresponding path program 122 times [2022-03-03 17:59:26,911 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:26,911 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652250181] [2022-03-03 17:59:26,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:26,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:27,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:27,023 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:27,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652250181] [2022-03-03 17:59:27,023 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652250181] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:59:27,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398896076] [2022-03-03 17:59:27,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:59:27,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:59:27,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:59:27,024 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:59:27,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-03-03 17:59:27,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:59:27,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:59:27,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:59:27,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:59:27,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:27,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:59:27,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:27,866 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398896076] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:59:27,866 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:59:27,866 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:59:27,866 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065956493] [2022-03-03 17:59:27,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:59:27,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:59:27,866 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:27,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:59:27,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=995, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:59:27,867 INFO L87 Difference]: Start difference. First operand 14345 states and 43939 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:29,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:29,448 INFO L93 Difference]: Finished difference Result 19962 states and 60523 transitions. [2022-03-03 17:59:29,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-03 17:59:29,448 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:59:29,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:29,490 INFO L225 Difference]: With dead ends: 19962 [2022-03-03 17:59:29,490 INFO L226 Difference]: Without dead ends: 19783 [2022-03-03 17:59:29,491 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 [2022-03-03 17:59:29,491 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 475 mSDsluCounter, 2523 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:29,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 2538 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:59:29,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19783 states. [2022-03-03 17:59:29,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19783 to 14317. [2022-03-03 17:59:29,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14317 states, 14316 states have (on average 3.062727018720313) internal successors, (43846), 14316 states have internal predecessors, (43846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:29,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14317 states to 14317 states and 43846 transitions. [2022-03-03 17:59:29,847 INFO L78 Accepts]: Start accepts. Automaton has 14317 states and 43846 transitions. Word has length 70 [2022-03-03 17:59:29,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:29,847 INFO L470 AbstractCegarLoop]: Abstraction has 14317 states and 43846 transitions. [2022-03-03 17:59:29,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:29,847 INFO L276 IsEmpty]: Start isEmpty. Operand 14317 states and 43846 transitions. [2022-03-03 17:59:29,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:59:29,870 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:29,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:29,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2022-03-03 17:59:30,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:59:30,070 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:30,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:30,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2058340145, now seen corresponding path program 123 times [2022-03-03 17:59:30,071 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:30,071 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075325765] [2022-03-03 17:59:30,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:30,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:30,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:30,198 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:30,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075325765] [2022-03-03 17:59:30,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075325765] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:59:30,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919152083] [2022-03-03 17:59:30,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:59:30,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:59:30,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:59:30,200 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:59:30,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-03-03 17:59:30,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:59:30,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:59:30,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 17:59:30,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:59:30,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:30,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:59:30,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:30,920 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919152083] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:59:30,920 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:59:30,920 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:59:30,920 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300259468] [2022-03-03 17:59:30,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:59:30,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:59:30,920 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:30,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:59:30,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:59:30,921 INFO L87 Difference]: Start difference. First operand 14317 states and 43846 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:32,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:32,005 INFO L93 Difference]: Finished difference Result 17980 states and 54647 transitions. [2022-03-03 17:59:32,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-03 17:59:32,006 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:59:32,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:32,047 INFO L225 Difference]: With dead ends: 17980 [2022-03-03 17:59:32,047 INFO L226 Difference]: Without dead ends: 17797 [2022-03-03 17:59:32,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1570 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=825, Invalid=4725, Unknown=0, NotChecked=0, Total=5550 [2022-03-03 17:59:32,048 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 478 mSDsluCounter, 2400 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 2438 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:32,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 2438 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:59:32,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17797 states. [2022-03-03 17:59:32,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17797 to 14341. [2022-03-03 17:59:32,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14341 states, 14340 states have (on average 3.059135285913529) internal successors, (43868), 14340 states have internal predecessors, (43868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:32,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14341 states to 14341 states and 43868 transitions. [2022-03-03 17:59:32,339 INFO L78 Accepts]: Start accepts. Automaton has 14341 states and 43868 transitions. Word has length 70 [2022-03-03 17:59:32,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:32,339 INFO L470 AbstractCegarLoop]: Abstraction has 14341 states and 43868 transitions. [2022-03-03 17:59:32,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:32,340 INFO L276 IsEmpty]: Start isEmpty. Operand 14341 states and 43868 transitions. [2022-03-03 17:59:32,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:59:32,363 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:32,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:32,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2022-03-03 17:59:32,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2022-03-03 17:59:32,564 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:32,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:32,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1316030519, now seen corresponding path program 124 times [2022-03-03 17:59:32,564 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:32,564 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860150778] [2022-03-03 17:59:32,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:32,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:32,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:32,686 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:32,686 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860150778] [2022-03-03 17:59:32,686 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860150778] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:59:32,686 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487092117] [2022-03-03 17:59:32,686 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:59:32,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:59:32,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:59:32,687 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:59:32,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-03-03 17:59:32,795 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:59:32,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:59:32,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 17:59:32,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:59:33,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:33,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:59:33,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:33,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487092117] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:59:33,439 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:59:33,439 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 17:59:33,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722570142] [2022-03-03 17:59:33,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:59:33,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 17:59:33,440 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:33,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 17:59:33,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:59:33,440 INFO L87 Difference]: Start difference. First operand 14341 states and 43868 transitions. Second operand has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:34,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:34,987 INFO L93 Difference]: Finished difference Result 23806 states and 72311 transitions. [2022-03-03 17:59:34,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-03 17:59:34,988 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:59:34,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:35,042 INFO L225 Difference]: With dead ends: 23806 [2022-03-03 17:59:35,043 INFO L226 Difference]: Without dead ends: 23707 [2022-03-03 17:59:35,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2157 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=920, Invalid=5886, Unknown=0, NotChecked=0, Total=6806 [2022-03-03 17:59:35,044 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 513 mSDsluCounter, 2443 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:35,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 2486 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:59:35,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23707 states. [2022-03-03 17:59:35,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23707 to 14569. [2022-03-03 17:59:35,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14569 states, 14568 states have (on average 3.061161449752883) internal successors, (44595), 14568 states have internal predecessors, (44595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:35,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14569 states to 14569 states and 44595 transitions. [2022-03-03 17:59:35,414 INFO L78 Accepts]: Start accepts. Automaton has 14569 states and 44595 transitions. Word has length 70 [2022-03-03 17:59:35,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:35,414 INFO L470 AbstractCegarLoop]: Abstraction has 14569 states and 44595 transitions. [2022-03-03 17:59:35,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:35,414 INFO L276 IsEmpty]: Start isEmpty. Operand 14569 states and 44595 transitions. [2022-03-03 17:59:35,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:59:35,439 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:35,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:35,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2022-03-03 17:59:35,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2022-03-03 17:59:35,640 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:35,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:35,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1354427263, now seen corresponding path program 125 times [2022-03-03 17:59:35,640 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:35,641 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240215416] [2022-03-03 17:59:35,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:35,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:35,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:35,760 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:35,760 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240215416] [2022-03-03 17:59:35,761 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240215416] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:59:35,761 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346661860] [2022-03-03 17:59:35,761 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:59:35,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:59:35,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:59:35,762 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:59:35,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-03-03 17:59:35,880 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:59:35,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:59:35,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:59:35,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:59:36,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:36,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:59:36,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:36,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346661860] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:59:36,648 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:59:36,648 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:59:36,648 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811600128] [2022-03-03 17:59:36,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:59:36,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:59:36,648 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:36,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:59:36,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:59:36,649 INFO L87 Difference]: Start difference. First operand 14569 states and 44595 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:39,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:39,606 INFO L93 Difference]: Finished difference Result 27149 states and 82633 transitions. [2022-03-03 17:59:39,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-03-03 17:59:39,606 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:59:39,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:39,666 INFO L225 Difference]: With dead ends: 27149 [2022-03-03 17:59:39,667 INFO L226 Difference]: Without dead ends: 27009 [2022-03-03 17:59:39,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4430 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1891, Invalid=10765, Unknown=0, NotChecked=0, Total=12656 [2022-03-03 17:59:39,668 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 683 mSDsluCounter, 2765 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:39,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [683 Valid, 2792 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:59:39,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27009 states. [2022-03-03 17:59:40,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27009 to 14625. [2022-03-03 17:59:40,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14625 states, 14624 states have (on average 3.061337527352298) internal successors, (44769), 14624 states have internal predecessors, (44769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:40,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14625 states to 14625 states and 44769 transitions. [2022-03-03 17:59:40,131 INFO L78 Accepts]: Start accepts. Automaton has 14625 states and 44769 transitions. Word has length 70 [2022-03-03 17:59:40,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:40,131 INFO L470 AbstractCegarLoop]: Abstraction has 14625 states and 44769 transitions. [2022-03-03 17:59:40,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:40,131 INFO L276 IsEmpty]: Start isEmpty. Operand 14625 states and 44769 transitions. [2022-03-03 17:59:40,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:59:40,154 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:40,154 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:40,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2022-03-03 17:59:40,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2022-03-03 17:59:40,354 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:40,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:40,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1880688313, now seen corresponding path program 126 times [2022-03-03 17:59:40,355 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:40,355 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652199652] [2022-03-03 17:59:40,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:40,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:40,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:40,485 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:40,486 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652199652] [2022-03-03 17:59:40,486 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652199652] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:59:40,486 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111730305] [2022-03-03 17:59:40,486 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:59:40,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:59:40,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:59:40,487 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:59:40,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-03-03 17:59:40,599 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:59:40,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:59:40,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:59:40,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:59:40,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:40,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:59:41,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:41,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111730305] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:59:41,316 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:59:41,316 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:59:41,316 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273887617] [2022-03-03 17:59:41,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:59:41,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:59:41,317 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:41,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:59:41,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:59:41,317 INFO L87 Difference]: Start difference. First operand 14625 states and 44769 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:46,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:46,186 INFO L93 Difference]: Finished difference Result 27837 states and 84927 transitions. [2022-03-03 17:59:46,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-03-03 17:59:46,187 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:59:46,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:46,254 INFO L225 Difference]: With dead ends: 27837 [2022-03-03 17:59:46,255 INFO L226 Difference]: Without dead ends: 27711 [2022-03-03 17:59:46,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10675 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3694, Invalid=23366, Unknown=0, NotChecked=0, Total=27060 [2022-03-03 17:59:46,257 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 797 mSDsluCounter, 2918 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 2942 SdHoareTripleChecker+Invalid, 1624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:46,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [797 Valid, 2942 Invalid, 1624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:59:46,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27711 states. [2022-03-03 17:59:46,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27711 to 14513. [2022-03-03 17:59:46,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14513 states, 14512 states have (on average 3.0601571113561192) internal successors, (44409), 14512 states have internal predecessors, (44409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:46,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14513 states to 14513 states and 44409 transitions. [2022-03-03 17:59:46,667 INFO L78 Accepts]: Start accepts. Automaton has 14513 states and 44409 transitions. Word has length 70 [2022-03-03 17:59:46,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:46,667 INFO L470 AbstractCegarLoop]: Abstraction has 14513 states and 44409 transitions. [2022-03-03 17:59:46,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:46,667 INFO L276 IsEmpty]: Start isEmpty. Operand 14513 states and 44409 transitions. [2022-03-03 17:59:46,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:59:46,692 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:46,692 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:46,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2022-03-03 17:59:46,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2022-03-03 17:59:46,892 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:46,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:46,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1842291569, now seen corresponding path program 127 times [2022-03-03 17:59:46,893 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:46,893 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845090042] [2022-03-03 17:59:46,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:46,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:47,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:47,008 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:47,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845090042] [2022-03-03 17:59:47,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845090042] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:59:47,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31052962] [2022-03-03 17:59:47,008 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:59:47,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:59:47,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:59:47,010 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:59:47,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-03-03 17:59:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:47,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:59:47,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:59:47,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:47,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:59:47,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:47,814 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31052962] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:59:47,814 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:59:47,815 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:59:47,815 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611271872] [2022-03-03 17:59:47,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:59:47,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:59:47,815 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:47,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:59:47,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:59:47,815 INFO L87 Difference]: Start difference. First operand 14513 states and 44409 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:52,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:59:52,827 INFO L93 Difference]: Finished difference Result 28353 states and 86292 transitions. [2022-03-03 17:59:52,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-03-03 17:59:52,827 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 17:59:52,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:59:52,892 INFO L225 Difference]: With dead ends: 28353 [2022-03-03 17:59:52,892 INFO L226 Difference]: Without dead ends: 28213 [2022-03-03 17:59:52,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11311 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4137, Invalid=24593, Unknown=0, NotChecked=0, Total=28730 [2022-03-03 17:59:52,895 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 750 mSDsluCounter, 3080 mSDsCounter, 0 mSdLazyCounter, 1618 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 3123 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:59:52,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 3123 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1618 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:59:52,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28213 states. [2022-03-03 17:59:53,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28213 to 14497. [2022-03-03 17:59:53,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14497 states, 14496 states have (on average 3.0599475717439293) internal successors, (44357), 14496 states have internal predecessors, (44357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:53,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14497 states to 14497 states and 44357 transitions. [2022-03-03 17:59:53,342 INFO L78 Accepts]: Start accepts. Automaton has 14497 states and 44357 transitions. Word has length 70 [2022-03-03 17:59:53,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:59:53,342 INFO L470 AbstractCegarLoop]: Abstraction has 14497 states and 44357 transitions. [2022-03-03 17:59:53,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:59:53,342 INFO L276 IsEmpty]: Start isEmpty. Operand 14497 states and 44357 transitions. [2022-03-03 17:59:53,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 17:59:53,365 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:59:53,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:59:53,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2022-03-03 17:59:53,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:59:53,566 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:59:53,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:59:53,566 INFO L85 PathProgramCache]: Analyzing trace with hash 876603189, now seen corresponding path program 128 times [2022-03-03 17:59:53,566 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:59:53,566 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014422524] [2022-03-03 17:59:53,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:59:53,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:59:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:59:53,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:53,676 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:59:53,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014422524] [2022-03-03 17:59:53,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014422524] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:59:53,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659654160] [2022-03-03 17:59:53,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:59:53,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:59:53,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:59:53,678 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:59:53,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-03-03 17:59:53,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:59:53,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:59:53,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:59:53,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:59:54,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:54,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:59:54,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:59:54,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659654160] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:59:54,454 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:59:54,454 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 17:59:54,454 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460380711] [2022-03-03 17:59:54,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:59:54,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 17:59:54,454 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:59:54,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 17:59:54,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=971, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:59:54,454 INFO L87 Difference]: Start difference. First operand 14497 states and 44357 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:01,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:01,069 INFO L93 Difference]: Finished difference Result 29139 states and 88557 transitions. [2022-03-03 18:00:01,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-03-03 18:00:01,069 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 18:00:01,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:01,130 INFO L225 Difference]: With dead ends: 29139 [2022-03-03 18:00:01,130 INFO L226 Difference]: Without dead ends: 28999 [2022-03-03 18:00:01,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18841 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=6774, Invalid=37536, Unknown=0, NotChecked=0, Total=44310 [2022-03-03 18:00:01,135 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 1043 mSDsluCounter, 3009 mSDsCounter, 0 mSdLazyCounter, 1767 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:01,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1043 Valid, 3048 Invalid, 1941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1767 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:00:01,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28999 states. [2022-03-03 18:00:01,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28999 to 14293. [2022-03-03 18:00:01,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14293 states, 14292 states have (on average 3.0542961097117267) internal successors, (43652), 14292 states have internal predecessors, (43652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:01,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14293 states to 14293 states and 43652 transitions. [2022-03-03 18:00:01,527 INFO L78 Accepts]: Start accepts. Automaton has 14293 states and 43652 transitions. Word has length 70 [2022-03-03 18:00:01,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:01,527 INFO L470 AbstractCegarLoop]: Abstraction has 14293 states and 43652 transitions. [2022-03-03 18:00:01,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:01,528 INFO L276 IsEmpty]: Start isEmpty. Operand 14293 states and 43652 transitions. [2022-03-03 18:00:01,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 18:00:01,549 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:01,549 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:01,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Ended with exit code 0 [2022-03-03 18:00:01,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable160 [2022-03-03 18:00:01,750 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:01,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:01,750 INFO L85 PathProgramCache]: Analyzing trace with hash -149721365, now seen corresponding path program 129 times [2022-03-03 18:00:01,750 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:01,750 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126653725] [2022-03-03 18:00:01,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:01,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:01,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:01,865 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:01,865 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126653725] [2022-03-03 18:00:01,865 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126653725] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:00:01,865 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406706902] [2022-03-03 18:00:01,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:00:01,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:01,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:00:01,866 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:00:01,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-03-03 18:00:01,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 18:00:01,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:00:01,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 18:00:01,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:00:02,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:02,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:00:02,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:02,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406706902] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:00:02,737 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:00:02,737 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 18:00:02,737 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554181455] [2022-03-03 18:00:02,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:00:02,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 18:00:02,737 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:02,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 18:00:02,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 18:00:02,737 INFO L87 Difference]: Start difference. First operand 14293 states and 43652 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:04,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:04,166 INFO L93 Difference]: Finished difference Result 15416 states and 46706 transitions. [2022-03-03 18:00:04,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-03 18:00:04,167 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 18:00:04,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:04,196 INFO L225 Difference]: With dead ends: 15416 [2022-03-03 18:00:04,196 INFO L226 Difference]: Without dead ends: 15338 [2022-03-03 18:00:04,197 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 [2022-03-03 18:00:04,197 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 500 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:04,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 2606 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 18:00:04,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15338 states. [2022-03-03 18:00:04,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15338 to 12497. [2022-03-03 18:00:04,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12497 states, 12496 states have (on average 3.036571702944942) internal successors, (37945), 12496 states have internal predecessors, (37945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:04,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12497 states to 12497 states and 37945 transitions. [2022-03-03 18:00:04,447 INFO L78 Accepts]: Start accepts. Automaton has 12497 states and 37945 transitions. Word has length 70 [2022-03-03 18:00:04,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:04,447 INFO L470 AbstractCegarLoop]: Abstraction has 12497 states and 37945 transitions. [2022-03-03 18:00:04,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:04,447 INFO L276 IsEmpty]: Start isEmpty. Operand 12497 states and 37945 transitions. [2022-03-03 18:00:04,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 18:00:04,466 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:04,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:04,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Forceful destruction successful, exit code 0 [2022-03-03 18:00:04,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2022-03-03 18:00:04,666 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:04,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:04,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1521769163, now seen corresponding path program 130 times [2022-03-03 18:00:04,667 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:04,667 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308849073] [2022-03-03 18:00:04,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:04,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:04,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:04,783 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:04,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308849073] [2022-03-03 18:00:04,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308849073] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:00:04,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599384992] [2022-03-03 18:00:04,783 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:00:04,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:04,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:00:04,784 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:00:04,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-03-03 18:00:04,894 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:00:04,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:00:04,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:00:04,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:00:05,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:05,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:00:05,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:05,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599384992] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:00:05,466 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:00:05,466 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 18:00:05,466 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856014592] [2022-03-03 18:00:05,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:00:05,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 18:00:05,466 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:05,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 18:00:05,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 18:00:05,466 INFO L87 Difference]: Start difference. First operand 12497 states and 37945 transitions. Second operand has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:07,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:07,167 INFO L93 Difference]: Finished difference Result 20350 states and 61283 transitions. [2022-03-03 18:00:07,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-03 18:00:07,168 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 18:00:07,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:07,227 INFO L225 Difference]: With dead ends: 20350 [2022-03-03 18:00:07,227 INFO L226 Difference]: Without dead ends: 20219 [2022-03-03 18:00:07,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2056 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=965, Invalid=5515, Unknown=0, NotChecked=0, Total=6480 [2022-03-03 18:00:07,228 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 457 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 2384 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:07,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 2384 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 18:00:07,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20219 states. [2022-03-03 18:00:07,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20219 to 12461. [2022-03-03 18:00:07,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12461 states, 12460 states have (on average 3.0380417335473515) internal successors, (37854), 12460 states have internal predecessors, (37854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:07,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12461 states to 12461 states and 37854 transitions. [2022-03-03 18:00:07,717 INFO L78 Accepts]: Start accepts. Automaton has 12461 states and 37854 transitions. Word has length 70 [2022-03-03 18:00:07,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:07,717 INFO L470 AbstractCegarLoop]: Abstraction has 12461 states and 37854 transitions. [2022-03-03 18:00:07,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:07,717 INFO L276 IsEmpty]: Start isEmpty. Operand 12461 states and 37854 transitions. [2022-03-03 18:00:07,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 18:00:07,744 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:07,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:07,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Forceful destruction successful, exit code 0 [2022-03-03 18:00:07,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:07,969 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:07,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:07,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1312213585, now seen corresponding path program 131 times [2022-03-03 18:00:07,970 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:07,970 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47248277] [2022-03-03 18:00:07,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:07,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:08,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:08,106 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:08,106 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47248277] [2022-03-03 18:00:08,106 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47248277] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:00:08,106 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561791377] [2022-03-03 18:00:08,106 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:00:08,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:08,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:00:08,108 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:00:08,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-03-03 18:00:08,245 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:00:08,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:00:08,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:00:08,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:00:08,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:08,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-03 18:00:08,541 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561791377] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:00:08,541 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-03 18:00:08,541 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 25 [2022-03-03 18:00:08,541 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974887686] [2022-03-03 18:00:08,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:00:08,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 18:00:08,542 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:08,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 18:00:08,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2022-03-03 18:00:08,542 INFO L87 Difference]: Start difference. First operand 12461 states and 37854 transitions. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:08,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:08,789 INFO L93 Difference]: Finished difference Result 12624 states and 38234 transitions. [2022-03-03 18:00:08,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 18:00:08,790 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 18:00:08,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:08,828 INFO L225 Difference]: With dead ends: 12624 [2022-03-03 18:00:08,828 INFO L226 Difference]: Without dead ends: 12337 [2022-03-03 18:00:08,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2022-03-03 18:00:08,829 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 124 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:08,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 1197 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:00:08,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12337 states. [2022-03-03 18:00:09,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12337 to 12177. [2022-03-03 18:00:09,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12177 states, 12176 states have (on average 3.019464520367937) internal successors, (36765), 12176 states have internal predecessors, (36765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:09,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12177 states to 12177 states and 36765 transitions. [2022-03-03 18:00:09,121 INFO L78 Accepts]: Start accepts. Automaton has 12177 states and 36765 transitions. Word has length 70 [2022-03-03 18:00:09,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:09,121 INFO L470 AbstractCegarLoop]: Abstraction has 12177 states and 36765 transitions. [2022-03-03 18:00:09,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:09,121 INFO L276 IsEmpty]: Start isEmpty. Operand 12177 states and 36765 transitions. [2022-03-03 18:00:09,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 18:00:09,146 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:09,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:09,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Forceful destruction successful, exit code 0 [2022-03-03 18:00:09,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:09,346 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:09,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:09,347 INFO L85 PathProgramCache]: Analyzing trace with hash 961642929, now seen corresponding path program 132 times [2022-03-03 18:00:09,347 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:09,347 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789574264] [2022-03-03 18:00:09,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:09,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:09,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:09,496 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:09,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789574264] [2022-03-03 18:00:09,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789574264] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:00:09,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165055857] [2022-03-03 18:00:09,497 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:00:09,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:09,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:00:09,498 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:00:09,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-03-03 18:00:09,632 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 18:00:09,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:00:09,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 18:00:09,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:00:09,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:09,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:00:10,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:10,443 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165055857] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:00:10,443 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:00:10,443 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 18:00:10,443 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178414598] [2022-03-03 18:00:10,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:00:10,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 18:00:10,443 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:10,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 18:00:10,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=983, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 18:00:10,444 INFO L87 Difference]: Start difference. First operand 12177 states and 36765 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:12,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:12,495 INFO L93 Difference]: Finished difference Result 21497 states and 64789 transitions. [2022-03-03 18:00:12,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-03-03 18:00:12,495 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 18:00:12,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:12,539 INFO L225 Difference]: With dead ends: 21497 [2022-03-03 18:00:12,539 INFO L226 Difference]: Without dead ends: 21227 [2022-03-03 18:00:12,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2570 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=915, Invalid=6741, Unknown=0, NotChecked=0, Total=7656 [2022-03-03 18:00:12,540 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 574 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 2660 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:12,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 2660 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 18:00:12,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21227 states. [2022-03-03 18:00:12,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21227 to 12001. [2022-03-03 18:00:12,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12001 states, 12000 states have (on average 3.0064166666666665) internal successors, (36077), 12000 states have internal predecessors, (36077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:12,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12001 states to 12001 states and 36077 transitions. [2022-03-03 18:00:12,814 INFO L78 Accepts]: Start accepts. Automaton has 12001 states and 36077 transitions. Word has length 70 [2022-03-03 18:00:12,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:12,814 INFO L470 AbstractCegarLoop]: Abstraction has 12001 states and 36077 transitions. [2022-03-03 18:00:12,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:12,814 INFO L276 IsEmpty]: Start isEmpty. Operand 12001 states and 36077 transitions. [2022-03-03 18:00:12,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 18:00:12,831 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:12,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:12,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Forceful destruction successful, exit code 0 [2022-03-03 18:00:13,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable164 [2022-03-03 18:00:13,034 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:13,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:13,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1882239561, now seen corresponding path program 133 times [2022-03-03 18:00:13,035 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:13,035 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452069591] [2022-03-03 18:00:13,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:13,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:13,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:13,167 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:13,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452069591] [2022-03-03 18:00:13,167 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452069591] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:00:13,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473095815] [2022-03-03 18:00:13,167 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:00:13,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:13,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:00:13,168 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:00:13,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-03-03 18:00:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:13,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 18:00:13,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:00:13,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:13,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:00:14,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:14,013 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473095815] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:00:14,013 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:00:14,013 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 18:00:14,014 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393596503] [2022-03-03 18:00:14,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:00:14,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 18:00:14,014 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:14,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 18:00:14,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 18:00:14,014 INFO L87 Difference]: Start difference. First operand 12001 states and 36077 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:15,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:15,737 INFO L93 Difference]: Finished difference Result 21117 states and 63584 transitions. [2022-03-03 18:00:15,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-03-03 18:00:15,738 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 18:00:15,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:15,779 INFO L225 Difference]: With dead ends: 21117 [2022-03-03 18:00:15,779 INFO L226 Difference]: Without dead ends: 20843 [2022-03-03 18:00:15,780 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 [2022-03-03 18:00:15,780 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 535 mSDsluCounter, 2064 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 2120 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:15,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 2120 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:00:15,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20843 states. [2022-03-03 18:00:16,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20843 to 11889. [2022-03-03 18:00:16,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11889 states, 11888 states have (on average 2.947257738896366) internal successors, (35037), 11888 states have internal predecessors, (35037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:16,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11889 states to 11889 states and 35037 transitions. [2022-03-03 18:00:16,047 INFO L78 Accepts]: Start accepts. Automaton has 11889 states and 35037 transitions. Word has length 70 [2022-03-03 18:00:16,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:16,047 INFO L470 AbstractCegarLoop]: Abstraction has 11889 states and 35037 transitions. [2022-03-03 18:00:16,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:16,048 INFO L276 IsEmpty]: Start isEmpty. Operand 11889 states and 35037 transitions. [2022-03-03 18:00:16,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 18:00:16,065 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:16,065 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:16,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2022-03-03 18:00:16,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:16,265 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:16,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:16,265 INFO L85 PathProgramCache]: Analyzing trace with hash -866153785, now seen corresponding path program 134 times [2022-03-03 18:00:16,266 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:16,266 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779709226] [2022-03-03 18:00:16,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:16,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:16,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:16,391 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:16,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779709226] [2022-03-03 18:00:16,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779709226] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:00:16,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864257325] [2022-03-03 18:00:16,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:00:16,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:16,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:00:16,392 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:00:16,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-03-03 18:00:16,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:00:16,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:00:16,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 18:00:16,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:00:16,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:16,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:00:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:17,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864257325] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:00:17,278 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:00:17,279 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-03 18:00:17,279 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453168876] [2022-03-03 18:00:17,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:00:17,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 18:00:17,279 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:17,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 18:00:17,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 18:00:17,280 INFO L87 Difference]: Start difference. First operand 11889 states and 35037 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:19,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:19,310 INFO L93 Difference]: Finished difference Result 21857 states and 64947 transitions. [2022-03-03 18:00:19,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-03 18:00:19,310 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 18:00:19,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:19,371 INFO L225 Difference]: With dead ends: 21857 [2022-03-03 18:00:19,371 INFO L226 Difference]: Without dead ends: 21691 [2022-03-03 18:00:19,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2293 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1037, Invalid=6103, Unknown=0, NotChecked=0, Total=7140 [2022-03-03 18:00:19,372 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 490 mSDsluCounter, 2415 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 2450 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:19,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [490 Valid, 2450 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 18:00:19,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21691 states. [2022-03-03 18:00:19,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21691 to 11861. [2022-03-03 18:00:19,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11861 states, 11860 states have (on average 2.948735244519393) internal successors, (34972), 11860 states have internal predecessors, (34972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:19,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11861 states to 11861 states and 34972 transitions. [2022-03-03 18:00:19,761 INFO L78 Accepts]: Start accepts. Automaton has 11861 states and 34972 transitions. Word has length 70 [2022-03-03 18:00:19,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:19,761 INFO L470 AbstractCegarLoop]: Abstraction has 11861 states and 34972 transitions. [2022-03-03 18:00:19,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:19,761 INFO L276 IsEmpty]: Start isEmpty. Operand 11861 states and 34972 transitions. [2022-03-03 18:00:19,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 18:00:19,784 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:19,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:19,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Forceful destruction successful, exit code 0 [2022-03-03 18:00:19,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2022-03-03 18:00:19,984 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:19,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:19,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1964973657, now seen corresponding path program 135 times [2022-03-03 18:00:19,985 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:19,985 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873986411] [2022-03-03 18:00:19,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:19,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:20,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:20,150 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:20,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873986411] [2022-03-03 18:00:20,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873986411] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:00:20,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199159646] [2022-03-03 18:00:20,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:00:20,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:20,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:00:20,152 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:00:20,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-03-03 18:00:20,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 18:00:20,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:00:20,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 18:00:20,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:00:20,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:20,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:00:21,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:21,122 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199159646] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:00:21,122 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:00:21,122 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-03-03 18:00:21,122 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779969355] [2022-03-03 18:00:21,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:00:21,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-03 18:00:21,122 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:21,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-03 18:00:21,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1043, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 18:00:21,123 INFO L87 Difference]: Start difference. First operand 11861 states and 34972 transitions. Second operand has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:23,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:23,041 INFO L93 Difference]: Finished difference Result 14438 states and 41939 transitions. [2022-03-03 18:00:23,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-03 18:00:23,042 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 18:00:23,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:23,081 INFO L225 Difference]: With dead ends: 14438 [2022-03-03 18:00:23,082 INFO L226 Difference]: Without dead ends: 14321 [2022-03-03 18:00:23,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1911 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=812, Invalid=5508, Unknown=0, NotChecked=0, Total=6320 [2022-03-03 18:00:23,083 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 463 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 1403 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 2719 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:23,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 2719 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1403 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 18:00:23,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14321 states. [2022-03-03 18:00:23,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14321 to 11965. [2022-03-03 18:00:23,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11965 states, 11964 states have (on average 2.9486793714476764) internal successors, (35278), 11964 states have internal predecessors, (35278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:23,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11965 states to 11965 states and 35278 transitions. [2022-03-03 18:00:23,372 INFO L78 Accepts]: Start accepts. Automaton has 11965 states and 35278 transitions. Word has length 70 [2022-03-03 18:00:23,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:23,372 INFO L470 AbstractCegarLoop]: Abstraction has 11965 states and 35278 transitions. [2022-03-03 18:00:23,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:23,372 INFO L276 IsEmpty]: Start isEmpty. Operand 11965 states and 35278 transitions. [2022-03-03 18:00:23,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 18:00:23,388 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:23,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:23,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Forceful destruction successful, exit code 0 [2022-03-03 18:00:23,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167,136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:23,588 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:23,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:23,589 INFO L85 PathProgramCache]: Analyzing trace with hash 866725193, now seen corresponding path program 136 times [2022-03-03 18:00:23,589 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:23,589 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876070970] [2022-03-03 18:00:23,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:23,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:23,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:23,704 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:23,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876070970] [2022-03-03 18:00:23,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876070970] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:00:23,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300165623] [2022-03-03 18:00:23,704 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:00:23,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:23,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:00:23,705 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:00:23,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-03-03 18:00:23,821 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:00:23,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:00:23,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:00:23,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:00:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:24,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:00:24,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:24,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300165623] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:00:24,414 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:00:24,414 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 18:00:24,414 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360669858] [2022-03-03 18:00:24,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:00:24,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 18:00:24,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:24,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 18:00:24,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 18:00:24,415 INFO L87 Difference]: Start difference. First operand 11965 states and 35278 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:25,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:25,988 INFO L93 Difference]: Finished difference Result 14444 states and 42080 transitions. [2022-03-03 18:00:25,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-03 18:00:25,989 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 18:00:25,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:26,017 INFO L225 Difference]: With dead ends: 14444 [2022-03-03 18:00:26,017 INFO L226 Difference]: Without dead ends: 14354 [2022-03-03 18:00:26,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2297 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1034, Invalid=6106, Unknown=0, NotChecked=0, Total=7140 [2022-03-03 18:00:26,019 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 444 mSDsluCounter, 2569 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 2588 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:26,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 2588 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 18:00:26,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14354 states. [2022-03-03 18:00:26,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14354 to 11997. [2022-03-03 18:00:26,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11997 states, 11996 states have (on average 2.948816272090697) internal successors, (35374), 11996 states have internal predecessors, (35374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:26,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11997 states to 11997 states and 35374 transitions. [2022-03-03 18:00:26,313 INFO L78 Accepts]: Start accepts. Automaton has 11997 states and 35374 transitions. Word has length 70 [2022-03-03 18:00:26,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:26,313 INFO L470 AbstractCegarLoop]: Abstraction has 11997 states and 35374 transitions. [2022-03-03 18:00:26,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:26,313 INFO L276 IsEmpty]: Start isEmpty. Operand 11997 states and 35374 transitions. [2022-03-03 18:00:26,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 18:00:26,329 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:26,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:26,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Forceful destruction successful, exit code 0 [2022-03-03 18:00:26,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2022-03-03 18:00:26,529 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:26,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:26,530 INFO L85 PathProgramCache]: Analyzing trace with hash -98963187, now seen corresponding path program 137 times [2022-03-03 18:00:26,530 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:26,530 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137215943] [2022-03-03 18:00:26,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:26,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:26,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:26,643 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:26,643 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137215943] [2022-03-03 18:00:26,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137215943] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:00:26,643 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705002602] [2022-03-03 18:00:26,643 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:00:26,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:26,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:00:26,644 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:00:26,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-03-03 18:00:26,759 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 18:00:26,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:00:26,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:00:26,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:00:27,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:27,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:00:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:27,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705002602] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:00:27,392 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:00:27,392 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-03 18:00:27,392 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019219846] [2022-03-03 18:00:27,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:00:27,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 18:00:27,393 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:27,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 18:00:27,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=900, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 18:00:27,393 INFO L87 Difference]: Start difference. First operand 11997 states and 35374 transitions. Second operand has 33 states, 33 states have (on average 2.909090909090909) internal successors, (96), 33 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:28,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:28,904 INFO L93 Difference]: Finished difference Result 16331 states and 48156 transitions. [2022-03-03 18:00:28,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-03 18:00:28,904 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.909090909090909) internal successors, (96), 33 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 18:00:28,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:28,937 INFO L225 Difference]: With dead ends: 16331 [2022-03-03 18:00:28,937 INFO L226 Difference]: Without dead ends: 16245 [2022-03-03 18:00:28,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2524 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1375, Invalid=6107, Unknown=0, NotChecked=0, Total=7482 [2022-03-03 18:00:28,938 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 478 mSDsluCounter, 2288 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 2339 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:28,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 2339 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 18:00:28,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16245 states. [2022-03-03 18:00:29,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16245 to 12441. [2022-03-03 18:00:29,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12441 states, 12440 states have (on average 2.9558681672025724) internal successors, (36771), 12440 states have internal predecessors, (36771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:29,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12441 states to 12441 states and 36771 transitions. [2022-03-03 18:00:29,192 INFO L78 Accepts]: Start accepts. Automaton has 12441 states and 36771 transitions. Word has length 70 [2022-03-03 18:00:29,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:29,192 INFO L470 AbstractCegarLoop]: Abstraction has 12441 states and 36771 transitions. [2022-03-03 18:00:29,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.909090909090909) internal successors, (96), 33 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:29,192 INFO L276 IsEmpty]: Start isEmpty. Operand 12441 states and 36771 transitions. [2022-03-03 18:00:29,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 18:00:29,212 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:29,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:29,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Forceful destruction successful, exit code 0 [2022-03-03 18:00:29,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2022-03-03 18:00:29,413 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:29,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:29,413 INFO L85 PathProgramCache]: Analyzing trace with hash 133632917, now seen corresponding path program 138 times [2022-03-03 18:00:29,413 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:29,413 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847466750] [2022-03-03 18:00:29,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:29,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:29,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:29,530 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:29,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847466750] [2022-03-03 18:00:29,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847466750] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:00:29,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101695289] [2022-03-03 18:00:29,530 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:00:29,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:29,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:00:29,531 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:00:29,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-03-03 18:00:29,648 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 18:00:29,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:00:29,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 18:00:29,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:00:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:29,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:00:30,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:30,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101695289] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:00:30,428 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:00:30,428 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-03 18:00:30,428 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135162127] [2022-03-03 18:00:30,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:00:30,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 18:00:30,429 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:30,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 18:00:30,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 18:00:30,429 INFO L87 Difference]: Start difference. First operand 12441 states and 36771 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:33,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:33,321 INFO L93 Difference]: Finished difference Result 15186 states and 44456 transitions. [2022-03-03 18:00:33,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-03 18:00:33,321 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 18:00:33,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:33,350 INFO L225 Difference]: With dead ends: 15186 [2022-03-03 18:00:33,350 INFO L226 Difference]: Without dead ends: 14980 [2022-03-03 18:00:33,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3073 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1259, Invalid=8641, Unknown=0, NotChecked=0, Total=9900 [2022-03-03 18:00:33,352 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 422 mSDsluCounter, 2750 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 2816 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:33,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 2816 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 18:00:33,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14980 states. [2022-03-03 18:00:33,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14980 to 12509. [2022-03-03 18:00:33,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12509 states, 12508 states have (on average 2.9550687559961624) internal successors, (36962), 12508 states have internal predecessors, (36962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:33,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12509 states to 12509 states and 36962 transitions. [2022-03-03 18:00:33,581 INFO L78 Accepts]: Start accepts. Automaton has 12509 states and 36962 transitions. Word has length 70 [2022-03-03 18:00:33,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:33,581 INFO L470 AbstractCegarLoop]: Abstraction has 12509 states and 36962 transitions. [2022-03-03 18:00:33,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:33,581 INFO L276 IsEmpty]: Start isEmpty. Operand 12509 states and 36962 transitions. [2022-03-03 18:00:33,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 18:00:33,638 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:33,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:33,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Forceful destruction successful, exit code 0 [2022-03-03 18:00:33,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2022-03-03 18:00:33,838 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:33,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:33,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1883448011, now seen corresponding path program 139 times [2022-03-03 18:00:33,839 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:33,839 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901698971] [2022-03-03 18:00:33,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:33,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:33,953 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:33,953 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901698971] [2022-03-03 18:00:33,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901698971] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:00:33,953 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359821026] [2022-03-03 18:00:33,953 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:00:33,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:33,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:00:33,954 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:00:33,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-03-03 18:00:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:34,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 18:00:34,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:00:34,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:34,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:00:34,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:34,770 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359821026] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:00:34,770 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:00:34,771 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-03 18:00:34,771 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771241845] [2022-03-03 18:00:34,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:00:34,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 18:00:34,771 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:34,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 18:00:34,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=938, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 18:00:34,771 INFO L87 Difference]: Start difference. First operand 12509 states and 36962 transitions. Second operand has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:38,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:38,129 INFO L93 Difference]: Finished difference Result 16083 states and 47002 transitions. [2022-03-03 18:00:38,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-03 18:00:38,129 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 18:00:38,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:38,161 INFO L225 Difference]: With dead ends: 16083 [2022-03-03 18:00:38,162 INFO L226 Difference]: Without dead ends: 15900 [2022-03-03 18:00:38,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3750 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1507, Invalid=10049, Unknown=0, NotChecked=0, Total=11556 [2022-03-03 18:00:38,163 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 444 mSDsluCounter, 2966 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 2992 SdHoareTripleChecker+Invalid, 1575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:38,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 2992 Invalid, 1575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 18:00:38,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15900 states. [2022-03-03 18:00:38,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15900 to 12681. [2022-03-03 18:00:38,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12681 states, 12680 states have (on average 2.9535488958990537) internal successors, (37451), 12680 states have internal predecessors, (37451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:38,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12681 states to 12681 states and 37451 transitions. [2022-03-03 18:00:38,537 INFO L78 Accepts]: Start accepts. Automaton has 12681 states and 37451 transitions. Word has length 70 [2022-03-03 18:00:38,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:38,537 INFO L470 AbstractCegarLoop]: Abstraction has 12681 states and 37451 transitions. [2022-03-03 18:00:38,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:38,538 INFO L276 IsEmpty]: Start isEmpty. Operand 12681 states and 37451 transitions. [2022-03-03 18:00:38,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 18:00:38,564 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:38,564 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:38,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Forceful destruction successful, exit code 0 [2022-03-03 18:00:38,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable171 [2022-03-03 18:00:38,765 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:38,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:38,765 INFO L85 PathProgramCache]: Analyzing trace with hash 728183623, now seen corresponding path program 140 times [2022-03-03 18:00:38,765 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:38,766 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435071968] [2022-03-03 18:00:38,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:38,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:38,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:38,907 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:38,907 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435071968] [2022-03-03 18:00:38,907 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435071968] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:00:38,907 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366388547] [2022-03-03 18:00:38,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:00:38,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:38,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:00:38,909 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:00:38,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-03-03 18:00:39,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:00:39,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:00:39,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 18:00:39,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:00:39,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:39,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:00:39,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:39,871 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366388547] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:00:39,871 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:00:39,871 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-03 18:00:39,871 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407316010] [2022-03-03 18:00:39,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:00:39,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 18:00:39,871 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:39,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 18:00:39,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 18:00:39,872 INFO L87 Difference]: Start difference. First operand 12681 states and 37451 transitions. Second operand has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:45,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:45,146 INFO L93 Difference]: Finished difference Result 17930 states and 52560 transitions. [2022-03-03 18:00:45,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-03-03 18:00:45,146 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 18:00:45,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:45,195 INFO L225 Difference]: With dead ends: 17930 [2022-03-03 18:00:45,195 INFO L226 Difference]: Without dead ends: 17844 [2022-03-03 18:00:45,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6380 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2695, Invalid=15395, Unknown=0, NotChecked=0, Total=18090 [2022-03-03 18:00:45,196 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 590 mSDsluCounter, 2708 mSDsCounter, 0 mSdLazyCounter, 1722 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:45,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [590 Valid, 2770 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1722 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 18:00:45,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17844 states. [2022-03-03 18:00:45,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17844 to 12541. [2022-03-03 18:00:45,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12541 states, 12540 states have (on average 2.952950558213716) internal successors, (37030), 12540 states have internal predecessors, (37030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:45,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12541 states to 12541 states and 37030 transitions. [2022-03-03 18:00:45,572 INFO L78 Accepts]: Start accepts. Automaton has 12541 states and 37030 transitions. Word has length 70 [2022-03-03 18:00:45,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:45,573 INFO L470 AbstractCegarLoop]: Abstraction has 12541 states and 37030 transitions. [2022-03-03 18:00:45,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:45,573 INFO L276 IsEmpty]: Start isEmpty. Operand 12541 states and 37030 transitions. [2022-03-03 18:00:45,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-03 18:00:45,598 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:45,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:45,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2022-03-03 18:00:45,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:45,799 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:45,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:45,800 INFO L85 PathProgramCache]: Analyzing trace with hash 225332551, now seen corresponding path program 141 times [2022-03-03 18:00:45,800 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:45,800 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915695319] [2022-03-03 18:00:45,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:45,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:45,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:45,934 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:45,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915695319] [2022-03-03 18:00:45,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915695319] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:00:45,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689530242] [2022-03-03 18:00:45,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:00:45,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:45,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:00:45,935 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:00:45,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2022-03-03 18:00:46,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 18:00:46,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:00:46,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 18:00:46,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:00:46,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:46,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:00:46,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:46,898 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689530242] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:00:46,898 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:00:46,898 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-03 18:00:46,898 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755610704] [2022-03-03 18:00:46,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:00:46,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 18:00:46,898 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:46,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 18:00:46,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 18:00:46,899 INFO L87 Difference]: Start difference. First operand 12541 states and 37030 transitions. Second operand has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:51,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:51,834 INFO L93 Difference]: Finished difference Result 16321 states and 47667 transitions. [2022-03-03 18:00:51,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-03-03 18:00:51,834 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-03 18:00:51,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:51,867 INFO L225 Difference]: With dead ends: 16321 [2022-03-03 18:00:51,867 INFO L226 Difference]: Without dead ends: 16138 [2022-03-03 18:00:51,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5234 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2371, Invalid=12881, Unknown=0, NotChecked=0, Total=15252 [2022-03-03 18:00:51,869 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 559 mSDsluCounter, 2713 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 1653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:51,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [559 Valid, 2763 Invalid, 1653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:00:51,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16138 states. [2022-03-03 18:00:52,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16138 to 12657. [2022-03-03 18:00:52,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12657 states, 12656 states have (on average 2.9520385587863465) internal successors, (37361), 12656 states have internal predecessors, (37361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:52,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12657 states to 12657 states and 37361 transitions. [2022-03-03 18:00:52,147 INFO L78 Accepts]: Start accepts. Automaton has 12657 states and 37361 transitions. Word has length 70 [2022-03-03 18:00:52,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:52,147 INFO L470 AbstractCegarLoop]: Abstraction has 12657 states and 37361 transitions. [2022-03-03 18:00:52,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:52,147 INFO L276 IsEmpty]: Start isEmpty. Operand 12657 states and 37361 transitions. [2022-03-03 18:00:52,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 18:00:52,170 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:52,170 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:52,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Forceful destruction successful, exit code 0 [2022-03-03 18:00:52,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:52,371 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:52,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:52,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1700585577, now seen corresponding path program 142 times [2022-03-03 18:00:52,372 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:52,372 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621789411] [2022-03-03 18:00:52,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:52,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:52,425 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:52,425 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:52,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621789411] [2022-03-03 18:00:52,426 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621789411] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:00:52,426 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746252555] [2022-03-03 18:00:52,426 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:00:52,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:52,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:00:52,427 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:00:52,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2022-03-03 18:00:52,556 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:00:52,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:00:52,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 18:00:52,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:00:52,643 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:52,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:00:52,774 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:52,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746252555] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:00:52,774 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:00:52,774 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-03 18:00:52,774 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766972455] [2022-03-03 18:00:52,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:00:52,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-03 18:00:52,775 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:52,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-03 18:00:52,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-03-03 18:00:52,775 INFO L87 Difference]: Start difference. First operand 12657 states and 37361 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:53,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:53,114 INFO L93 Difference]: Finished difference Result 14135 states and 41295 transitions. [2022-03-03 18:00:53,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 18:00:53,115 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 18:00:53,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:53,145 INFO L225 Difference]: With dead ends: 14135 [2022-03-03 18:00:53,145 INFO L226 Difference]: Without dead ends: 14135 [2022-03-03 18:00:53,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2022-03-03 18:00:53,146 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 304 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:53,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 823 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:00:53,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14135 states. [2022-03-03 18:00:53,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14135 to 12801. [2022-03-03 18:00:53,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12801 states, 12800 states have (on average 2.951640625) internal successors, (37781), 12800 states have internal predecessors, (37781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:53,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12801 states to 12801 states and 37781 transitions. [2022-03-03 18:00:53,401 INFO L78 Accepts]: Start accepts. Automaton has 12801 states and 37781 transitions. Word has length 74 [2022-03-03 18:00:53,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:53,401 INFO L470 AbstractCegarLoop]: Abstraction has 12801 states and 37781 transitions. [2022-03-03 18:00:53,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:53,401 INFO L276 IsEmpty]: Start isEmpty. Operand 12801 states and 37781 transitions. [2022-03-03 18:00:53,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 18:00:53,421 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:53,421 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:53,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Forceful destruction successful, exit code 0 [2022-03-03 18:00:53,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:53,622 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:53,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:53,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1759323673, now seen corresponding path program 143 times [2022-03-03 18:00:53,622 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:53,622 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674658732] [2022-03-03 18:00:53,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:53,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:53,659 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:53,659 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:53,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674658732] [2022-03-03 18:00:53,659 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674658732] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:00:53,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290922500] [2022-03-03 18:00:53,659 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:00:53,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:53,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:00:53,660 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:00:53,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-03-03 18:00:53,785 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 18:00:53,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:00:53,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 18:00:53,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:00:53,867 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:53,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:00:53,990 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:53,991 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290922500] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:00:53,991 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:00:53,991 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-03 18:00:53,991 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575786065] [2022-03-03 18:00:53,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:00:53,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-03 18:00:53,991 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:53,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-03 18:00:53,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-03 18:00:53,992 INFO L87 Difference]: Start difference. First operand 12801 states and 37781 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:54,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:54,493 INFO L93 Difference]: Finished difference Result 14181 states and 41374 transitions. [2022-03-03 18:00:54,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 18:00:54,494 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 18:00:54,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:54,522 INFO L225 Difference]: With dead ends: 14181 [2022-03-03 18:00:54,522 INFO L226 Difference]: Without dead ends: 14181 [2022-03-03 18:00:54,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=595, Invalid=1475, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 18:00:54,522 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 409 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:54,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 1122 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:00:54,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14181 states. [2022-03-03 18:00:54,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14181 to 12857. [2022-03-03 18:00:54,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12857 states, 12856 states have (on average 2.9513845675171124) internal successors, (37943), 12856 states have internal predecessors, (37943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:54,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12857 states to 12857 states and 37943 transitions. [2022-03-03 18:00:54,746 INFO L78 Accepts]: Start accepts. Automaton has 12857 states and 37943 transitions. Word has length 74 [2022-03-03 18:00:54,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:54,746 INFO L470 AbstractCegarLoop]: Abstraction has 12857 states and 37943 transitions. [2022-03-03 18:00:54,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:54,746 INFO L276 IsEmpty]: Start isEmpty. Operand 12857 states and 37943 transitions. [2022-03-03 18:00:54,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 18:00:54,765 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:54,765 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:54,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Forceful destruction successful, exit code 0 [2022-03-03 18:00:54,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:54,966 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:54,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:54,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1130358979, now seen corresponding path program 144 times [2022-03-03 18:00:54,966 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:54,966 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049122245] [2022-03-03 18:00:54,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:54,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:55,003 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:55,004 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:55,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049122245] [2022-03-03 18:00:55,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049122245] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:00:55,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444540755] [2022-03-03 18:00:55,004 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:00:55,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:55,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:00:55,005 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:00:55,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2022-03-03 18:00:55,131 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 18:00:55,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:00:55,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 18:00:55,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:00:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:55,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:00:55,336 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:55,336 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444540755] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:00:55,336 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:00:55,336 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-03-03 18:00:55,336 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787595681] [2022-03-03 18:00:55,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:00:55,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-03 18:00:55,337 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:55,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-03 18:00:55,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-03-03 18:00:55,337 INFO L87 Difference]: Start difference. First operand 12857 states and 37943 transitions. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:55,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:55,644 INFO L93 Difference]: Finished difference Result 14088 states and 41318 transitions. [2022-03-03 18:00:55,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 18:00:55,644 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 18:00:55,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:55,674 INFO L225 Difference]: With dead ends: 14088 [2022-03-03 18:00:55,674 INFO L226 Difference]: Without dead ends: 14088 [2022-03-03 18:00:55,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=249, Invalid=507, Unknown=0, NotChecked=0, Total=756 [2022-03-03 18:00:55,675 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 285 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:55,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 989 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:00:55,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14088 states. [2022-03-03 18:00:55,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14088 to 12465. [2022-03-03 18:00:55,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12465 states, 12464 states have (on average 2.9574775353016687) internal successors, (36862), 12464 states have internal predecessors, (36862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:55,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12465 states to 12465 states and 36862 transitions. [2022-03-03 18:00:55,945 INFO L78 Accepts]: Start accepts. Automaton has 12465 states and 36862 transitions. Word has length 74 [2022-03-03 18:00:55,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:55,945 INFO L470 AbstractCegarLoop]: Abstraction has 12465 states and 36862 transitions. [2022-03-03 18:00:55,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:55,945 INFO L276 IsEmpty]: Start isEmpty. Operand 12465 states and 36862 transitions. [2022-03-03 18:00:55,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 18:00:55,968 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:55,968 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:55,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Forceful destruction successful, exit code 0 [2022-03-03 18:00:56,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable176 [2022-03-03 18:00:56,168 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:56,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:56,169 INFO L85 PathProgramCache]: Analyzing trace with hash -525314691, now seen corresponding path program 145 times [2022-03-03 18:00:56,169 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:56,169 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754222843] [2022-03-03 18:00:56,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:56,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:56,209 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:56,209 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:56,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754222843] [2022-03-03 18:00:56,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754222843] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:00:56,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927051601] [2022-03-03 18:00:56,209 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:00:56,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:56,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:00:56,210 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:00:56,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-03-03 18:00:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:56,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 18:00:56,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:00:56,413 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:56,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:00:56,544 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:56,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927051601] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:00:56,544 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:00:56,544 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-03 18:00:56,544 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663566612] [2022-03-03 18:00:56,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:00:56,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-03 18:00:56,545 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:56,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-03 18:00:56,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-03-03 18:00:56,545 INFO L87 Difference]: Start difference. First operand 12465 states and 36862 transitions. Second operand has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:56,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:56,851 INFO L93 Difference]: Finished difference Result 13302 states and 38964 transitions. [2022-03-03 18:00:56,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 18:00:56,852 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 18:00:56,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:56,878 INFO L225 Difference]: With dead ends: 13302 [2022-03-03 18:00:56,878 INFO L226 Difference]: Without dead ends: 13266 [2022-03-03 18:00:56,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=241, Invalid=571, Unknown=0, NotChecked=0, Total=812 [2022-03-03 18:00:56,879 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 163 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:56,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 1006 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:00:56,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13266 states. [2022-03-03 18:00:57,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13266 to 12133. [2022-03-03 18:00:57,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12133 states, 12132 states have (on average 2.956890867128256) internal successors, (35873), 12132 states have internal predecessors, (35873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:57,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12133 states to 12133 states and 35873 transitions. [2022-03-03 18:00:57,100 INFO L78 Accepts]: Start accepts. Automaton has 12133 states and 35873 transitions. Word has length 74 [2022-03-03 18:00:57,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:57,100 INFO L470 AbstractCegarLoop]: Abstraction has 12133 states and 35873 transitions. [2022-03-03 18:00:57,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:57,101 INFO L276 IsEmpty]: Start isEmpty. Operand 12133 states and 35873 transitions. [2022-03-03 18:00:57,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 18:00:57,118 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:57,118 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:57,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Forceful destruction successful, exit code 0 [2022-03-03 18:00:57,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:57,318 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:57,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:57,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1963115701, now seen corresponding path program 146 times [2022-03-03 18:00:57,319 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:57,319 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208447154] [2022-03-03 18:00:57,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:57,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:57,358 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:57,358 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:57,358 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208447154] [2022-03-03 18:00:57,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208447154] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:00:57,358 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754250300] [2022-03-03 18:00:57,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:00:57,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:57,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:00:57,359 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:00:57,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-03-03 18:00:57,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:00:57,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:00:57,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 18:00:57,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:00:57,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:57,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:00:57,687 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:57,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754250300] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:00:57,687 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:00:57,687 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-03 18:00:57,687 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37013462] [2022-03-03 18:00:57,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:00:57,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-03 18:00:57,687 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:57,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-03 18:00:57,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-03-03 18:00:57,688 INFO L87 Difference]: Start difference. First operand 12133 states and 35873 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:58,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:58,088 INFO L93 Difference]: Finished difference Result 13672 states and 39905 transitions. [2022-03-03 18:00:58,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-03 18:00:58,089 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 18:00:58,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:58,114 INFO L225 Difference]: With dead ends: 13672 [2022-03-03 18:00:58,114 INFO L226 Difference]: Without dead ends: 13672 [2022-03-03 18:00:58,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=282, Invalid=978, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 18:00:58,115 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 310 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:58,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 850 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:00:58,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13672 states. [2022-03-03 18:00:58,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13672 to 11773. [2022-03-03 18:00:58,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11773 states, 11772 states have (on average 2.953024125042474) internal successors, (34763), 11772 states have internal predecessors, (34763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:58,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11773 states to 11773 states and 34763 transitions. [2022-03-03 18:00:58,367 INFO L78 Accepts]: Start accepts. Automaton has 11773 states and 34763 transitions. Word has length 74 [2022-03-03 18:00:58,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:58,367 INFO L470 AbstractCegarLoop]: Abstraction has 11773 states and 34763 transitions. [2022-03-03 18:00:58,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:58,367 INFO L276 IsEmpty]: Start isEmpty. Operand 11773 states and 34763 transitions. [2022-03-03 18:00:58,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 18:00:58,382 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:58,382 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:58,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Forceful destruction successful, exit code 0 [2022-03-03 18:00:58,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2022-03-03 18:00:58,583 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:58,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:58,583 INFO L85 PathProgramCache]: Analyzing trace with hash -433839251, now seen corresponding path program 147 times [2022-03-03 18:00:58,583 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:58,583 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563387924] [2022-03-03 18:00:58,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:58,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:58,619 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:58,620 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:58,620 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563387924] [2022-03-03 18:00:58,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563387924] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:00:58,620 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706825315] [2022-03-03 18:00:58,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:00:58,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:58,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:00:58,621 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:00:58,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2022-03-03 18:00:58,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 18:00:58,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:00:58,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 18:00:58,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:00:58,826 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:58,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:00:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:58,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706825315] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:00:58,940 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:00:58,940 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-03 18:00:58,940 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154813603] [2022-03-03 18:00:58,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:00:58,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-03 18:00:58,941 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:58,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-03 18:00:58,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-03-03 18:00:58,941 INFO L87 Difference]: Start difference. First operand 11773 states and 34763 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:59,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:59,331 INFO L93 Difference]: Finished difference Result 12670 states and 37013 transitions. [2022-03-03 18:00:59,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-03 18:00:59,331 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 18:00:59,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:59,356 INFO L225 Difference]: With dead ends: 12670 [2022-03-03 18:00:59,357 INFO L226 Difference]: Without dead ends: 12634 [2022-03-03 18:00:59,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=282, Invalid=978, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 18:00:59,357 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 205 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:59,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 1158 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:00:59,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12634 states. [2022-03-03 18:00:59,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12634 to 11469. [2022-03-03 18:00:59,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11469 states, 11468 states have (on average 2.9510812696198117) internal successors, (33843), 11468 states have internal predecessors, (33843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:59,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11469 states to 11469 states and 33843 transitions. [2022-03-03 18:00:59,543 INFO L78 Accepts]: Start accepts. Automaton has 11469 states and 33843 transitions. Word has length 74 [2022-03-03 18:00:59,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:59,543 INFO L470 AbstractCegarLoop]: Abstraction has 11469 states and 33843 transitions. [2022-03-03 18:00:59,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:59,543 INFO L276 IsEmpty]: Start isEmpty. Operand 11469 states and 33843 transitions. [2022-03-03 18:00:59,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 18:00:59,559 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:59,559 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:59,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Forceful destruction successful, exit code 0 [2022-03-03 18:00:59,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2022-03-03 18:00:59,760 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:59,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:59,760 INFO L85 PathProgramCache]: Analyzing trace with hash -2118918771, now seen corresponding path program 148 times [2022-03-03 18:00:59,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:59,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039003466] [2022-03-03 18:00:59,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:59,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:59,797 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:59,797 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039003466] [2022-03-03 18:00:59,797 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039003466] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:00:59,797 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041772637] [2022-03-03 18:00:59,797 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:00:59,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:59,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:00:59,798 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:00:59,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2022-03-03 18:00:59,919 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:00:59,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:00:59,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 18:00:59,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:00:59,996 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:59,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:01:00,113 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:00,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041772637] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:01:00,113 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:01:00,113 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-03 18:01:00,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747219648] [2022-03-03 18:01:00,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:01:00,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-03 18:01:00,114 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:00,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-03 18:01:00,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-03-03 18:01:00,114 INFO L87 Difference]: Start difference. First operand 11469 states and 33843 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:00,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:00,464 INFO L93 Difference]: Finished difference Result 12266 states and 35915 transitions. [2022-03-03 18:01:00,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 18:01:00,464 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 18:01:00,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:00,484 INFO L225 Difference]: With dead ends: 12266 [2022-03-03 18:01:00,485 INFO L226 Difference]: Without dead ends: 12230 [2022-03-03 18:01:00,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2022-03-03 18:01:00,485 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 219 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:00,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 991 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:01:00,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12230 states. [2022-03-03 18:01:00,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12230 to 11513. [2022-03-03 18:01:00,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11513 states, 11512 states have (on average 2.95135510771369) internal successors, (33976), 11512 states have internal predecessors, (33976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:00,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11513 states to 11513 states and 33976 transitions. [2022-03-03 18:01:00,673 INFO L78 Accepts]: Start accepts. Automaton has 11513 states and 33976 transitions. Word has length 74 [2022-03-03 18:01:00,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:00,673 INFO L470 AbstractCegarLoop]: Abstraction has 11513 states and 33976 transitions. [2022-03-03 18:01:00,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:00,673 INFO L276 IsEmpty]: Start isEmpty. Operand 11513 states and 33976 transitions. [2022-03-03 18:01:00,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 18:01:00,689 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:00,689 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:00,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Forceful destruction successful, exit code 0 [2022-03-03 18:01:00,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:00,890 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:00,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:00,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1069541713, now seen corresponding path program 149 times [2022-03-03 18:01:00,890 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:00,890 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139477253] [2022-03-03 18:01:00,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:00,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:00,964 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:00,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139477253] [2022-03-03 18:01:00,964 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139477253] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:01:00,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22122953] [2022-03-03 18:01:00,964 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:01:00,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:00,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:01:00,965 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:01:00,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2022-03-03 18:01:01,091 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 18:01:01,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:01:01,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 18:01:01,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:01:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:01,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:01:01,287 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:01,287 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22122953] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:01:01,287 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:01:01,287 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-03 18:01:01,287 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822562638] [2022-03-03 18:01:01,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:01:01,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-03 18:01:01,288 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:01,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-03 18:01:01,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-03 18:01:01,288 INFO L87 Difference]: Start difference. First operand 11513 states and 33976 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:01,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:01,768 INFO L93 Difference]: Finished difference Result 12402 states and 36248 transitions. [2022-03-03 18:01:01,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 18:01:01,769 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 18:01:01,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:01,791 INFO L225 Difference]: With dead ends: 12402 [2022-03-03 18:01:01,791 INFO L226 Difference]: Without dead ends: 12366 [2022-03-03 18:01:01,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 145 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=595, Invalid=1475, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 18:01:01,792 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 337 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:01,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 1014 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:01:01,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12366 states. [2022-03-03 18:01:01,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12366 to 11481. [2022-03-03 18:01:01,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11481 states, 11480 states have (on average 2.9505226480836235) internal successors, (33872), 11480 states have internal predecessors, (33872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:01,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11481 states to 11481 states and 33872 transitions. [2022-03-03 18:01:01,981 INFO L78 Accepts]: Start accepts. Automaton has 11481 states and 33872 transitions. Word has length 74 [2022-03-03 18:01:01,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:01,981 INFO L470 AbstractCegarLoop]: Abstraction has 11481 states and 33872 transitions. [2022-03-03 18:01:01,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:01,981 INFO L276 IsEmpty]: Start isEmpty. Operand 11481 states and 33872 transitions. [2022-03-03 18:01:01,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 18:01:01,997 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:01,997 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:02,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Ended with exit code 0 [2022-03-03 18:01:02,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable181 [2022-03-03 18:01:02,198 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:02,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:02,198 INFO L85 PathProgramCache]: Analyzing trace with hash -374564563, now seen corresponding path program 150 times [2022-03-03 18:01:02,198 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:02,198 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880924529] [2022-03-03 18:01:02,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:02,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:02,235 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:02,235 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:02,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880924529] [2022-03-03 18:01:02,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880924529] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:01:02,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002015115] [2022-03-03 18:01:02,235 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:01:02,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:02,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:01:02,236 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:01:02,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2022-03-03 18:01:02,363 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 18:01:02,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:01:02,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 18:01:02,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:01:02,443 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:02,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:01:02,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:02,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002015115] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:01:02,545 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:01:02,545 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-03-03 18:01:02,545 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360271158] [2022-03-03 18:01:02,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:01:02,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-03 18:01:02,546 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:02,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-03 18:01:02,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-03-03 18:01:02,546 INFO L87 Difference]: Start difference. First operand 11481 states and 33872 transitions. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:02,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:02,808 INFO L93 Difference]: Finished difference Result 12346 states and 36137 transitions. [2022-03-03 18:01:02,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 18:01:02,808 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 18:01:02,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:02,828 INFO L225 Difference]: With dead ends: 12346 [2022-03-03 18:01:02,828 INFO L226 Difference]: Without dead ends: 12298 [2022-03-03 18:01:02,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 147 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=249, Invalid=507, Unknown=0, NotChecked=0, Total=756 [2022-03-03 18:01:02,829 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 270 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:02,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 824 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:01:02,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12298 states. [2022-03-03 18:01:02,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12298 to 10885. [2022-03-03 18:01:02,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10885 states, 10884 states have (on average 2.9546122748989343) internal successors, (32158), 10884 states have internal predecessors, (32158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:02,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10885 states to 10885 states and 32158 transitions. [2022-03-03 18:01:02,993 INFO L78 Accepts]: Start accepts. Automaton has 10885 states and 32158 transitions. Word has length 74 [2022-03-03 18:01:02,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:02,993 INFO L470 AbstractCegarLoop]: Abstraction has 10885 states and 32158 transitions. [2022-03-03 18:01:02,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:02,993 INFO L276 IsEmpty]: Start isEmpty. Operand 10885 states and 32158 transitions. [2022-03-03 18:01:03,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-03 18:01:03,007 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:03,007 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:03,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Forceful destruction successful, exit code 0 [2022-03-03 18:01:03,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:03,208 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:03,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:03,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1326088179, now seen corresponding path program 151 times [2022-03-03 18:01:03,208 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:03,208 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582014116] [2022-03-03 18:01:03,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:03,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:03,243 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:03,244 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:03,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582014116] [2022-03-03 18:01:03,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582014116] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:01:03,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13509683] [2022-03-03 18:01:03,244 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:01:03,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:03,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:01:03,245 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:01:03,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2022-03-03 18:01:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:03,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 18:01:03,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:01:03,443 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:03,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:01:03,554 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:03,554 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13509683] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:01:03,554 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:01:03,554 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-03 18:01:03,554 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089112335] [2022-03-03 18:01:03,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:01:03,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-03 18:01:03,554 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:03,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-03 18:01:03,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-03-03 18:01:03,555 INFO L87 Difference]: Start difference. First operand 10885 states and 32158 transitions. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:03,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:03,860 INFO L93 Difference]: Finished difference Result 12036 states and 35091 transitions. [2022-03-03 18:01:03,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 18:01:03,861 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-03 18:01:03,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:03,923 INFO L225 Difference]: With dead ends: 12036 [2022-03-03 18:01:03,923 INFO L226 Difference]: Without dead ends: 12036 [2022-03-03 18:01:03,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=241, Invalid=571, Unknown=0, NotChecked=0, Total=812 [2022-03-03 18:01:03,924 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 314 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:03,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 807 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:01:03,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12036 states. [2022-03-03 18:01:04,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12036 to 10669. [2022-03-03 18:01:04,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 2.9501312335958003) internal successors, (31472), 10668 states have internal predecessors, (31472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:04,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 31472 transitions. [2022-03-03 18:01:04,084 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 31472 transitions. Word has length 74 [2022-03-03 18:01:04,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:04,084 INFO L470 AbstractCegarLoop]: Abstraction has 10669 states and 31472 transitions. [2022-03-03 18:01:04,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:04,084 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 31472 transitions. [2022-03-03 18:01:04,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 18:01:04,099 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:04,100 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:04,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Ended with exit code 0 [2022-03-03 18:01:04,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable183 [2022-03-03 18:01:04,300 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:04,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:04,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1482324071, now seen corresponding path program 152 times [2022-03-03 18:01:04,301 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:04,301 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580556663] [2022-03-03 18:01:04,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:04,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:04,468 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:04,468 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:04,468 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580556663] [2022-03-03 18:01:04,468 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580556663] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:01:04,468 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090142101] [2022-03-03 18:01:04,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:01:04,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:04,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:01:04,469 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:01:04,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2022-03-03 18:01:04,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:01:04,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:01:04,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 18:01:04,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:01:04,923 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:04,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:01:05,587 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:05,588 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090142101] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:01:05,588 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:01:05,588 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-03 18:01:05,588 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100139996] [2022-03-03 18:01:05,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:01:05,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-03 18:01:05,588 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:05,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-03 18:01:05,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1531, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 18:01:05,589 INFO L87 Difference]: Start difference. First operand 10669 states and 31472 transitions. Second operand has 42 states, 42 states have (on average 2.9761904761904763) internal successors, (125), 42 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:07,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:07,348 INFO L93 Difference]: Finished difference Result 12099 states and 35409 transitions. [2022-03-03 18:01:07,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-03 18:01:07,349 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.9761904761904763) internal successors, (125), 42 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 18:01:07,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:07,372 INFO L225 Difference]: With dead ends: 12099 [2022-03-03 18:01:07,373 INFO L226 Difference]: Without dead ends: 11964 [2022-03-03 18:01:07,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2442 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1221, Invalid=7151, Unknown=0, NotChecked=0, Total=8372 [2022-03-03 18:01:07,374 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 527 mSDsluCounter, 3061 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 3125 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:07,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [527 Valid, 3125 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 18:01:07,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11964 states. [2022-03-03 18:01:07,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11964 to 10721. [2022-03-03 18:01:07,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10721 states, 10720 states have (on average 2.9484141791044776) internal successors, (31607), 10720 states have internal predecessors, (31607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:07,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10721 states to 10721 states and 31607 transitions. [2022-03-03 18:01:07,591 INFO L78 Accepts]: Start accepts. Automaton has 10721 states and 31607 transitions. Word has length 78 [2022-03-03 18:01:07,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:07,591 INFO L470 AbstractCegarLoop]: Abstraction has 10721 states and 31607 transitions. [2022-03-03 18:01:07,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.9761904761904763) internal successors, (125), 42 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:07,592 INFO L276 IsEmpty]: Start isEmpty. Operand 10721 states and 31607 transitions. [2022-03-03 18:01:07,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 18:01:07,606 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:07,606 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:07,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Forceful destruction successful, exit code 0 [2022-03-03 18:01:07,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,153 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:07,807 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:07,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:07,808 INFO L85 PathProgramCache]: Analyzing trace with hash 2093402461, now seen corresponding path program 153 times [2022-03-03 18:01:07,808 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:07,808 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131993365] [2022-03-03 18:01:07,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:07,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:07,970 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:07,970 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:07,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131993365] [2022-03-03 18:01:07,971 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131993365] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:01:07,971 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769032029] [2022-03-03 18:01:07,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:01:07,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:07,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:01:07,972 INFO L229 MonitoredProcess]: Starting monitored process 154 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:01:07,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2022-03-03 18:01:08,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-03 18:01:08,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:01:08,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:01:08,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:01:08,386 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:01:08,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:01:08,792 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:01:08,793 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769032029] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:01:08,793 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:01:08,793 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-03 18:01:08,793 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471736581] [2022-03-03 18:01:08,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:01:08,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-03 18:01:08,793 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:08,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-03 18:01:08,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1202, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 18:01:08,794 INFO L87 Difference]: Start difference. First operand 10721 states and 31607 transitions. Second operand has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:11,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:11,842 INFO L93 Difference]: Finished difference Result 11808 states and 34568 transitions. [2022-03-03 18:01:11,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-03-03 18:01:11,842 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 18:01:11,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:11,869 INFO L225 Difference]: With dead ends: 11808 [2022-03-03 18:01:11,870 INFO L226 Difference]: Without dead ends: 11569 [2022-03-03 18:01:11,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4614 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1862, Invalid=13144, Unknown=0, NotChecked=0, Total=15006 [2022-03-03 18:01:11,872 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 546 mSDsluCounter, 3951 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 4042 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:11,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [546 Valid, 4042 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1853 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:01:11,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11569 states. [2022-03-03 18:01:12,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11569 to 10285. [2022-03-03 18:01:12,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10285 states, 10284 states have (on average 2.899649941656943) internal successors, (29820), 10284 states have internal predecessors, (29820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:12,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10285 states to 10285 states and 29820 transitions. [2022-03-03 18:01:12,220 INFO L78 Accepts]: Start accepts. Automaton has 10285 states and 29820 transitions. Word has length 78 [2022-03-03 18:01:12,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:12,220 INFO L470 AbstractCegarLoop]: Abstraction has 10285 states and 29820 transitions. [2022-03-03 18:01:12,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:12,220 INFO L276 IsEmpty]: Start isEmpty. Operand 10285 states and 29820 transitions. [2022-03-03 18:01:12,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 18:01:12,240 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:12,240 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:12,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Forceful destruction successful, exit code 0 [2022-03-03 18:01:12,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,154 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:12,440 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:12,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:12,441 INFO L85 PathProgramCache]: Analyzing trace with hash -926819967, now seen corresponding path program 154 times [2022-03-03 18:01:12,441 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:12,441 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172901957] [2022-03-03 18:01:12,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:12,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:12,643 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:12,643 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:12,643 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172901957] [2022-03-03 18:01:12,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172901957] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:01:12,643 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795650534] [2022-03-03 18:01:12,643 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:01:12,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:12,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:01:12,645 INFO L229 MonitoredProcess]: Starting monitored process 155 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:01:12,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2022-03-03 18:01:12,794 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:01:12,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:01:12,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:01:12,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:01:13,280 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:13,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:01:13,926 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:13,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795650534] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:01:13,926 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:01:13,926 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2022-03-03 18:01:13,926 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164241387] [2022-03-03 18:01:13,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:01:13,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-03 18:01:13,927 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:13,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-03 18:01:13,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1801, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 18:01:13,927 INFO L87 Difference]: Start difference. First operand 10285 states and 29820 transitions. Second operand has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:16,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:16,904 INFO L93 Difference]: Finished difference Result 12424 states and 35711 transitions. [2022-03-03 18:01:16,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-03 18:01:16,904 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 18:01:16,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:16,935 INFO L225 Difference]: With dead ends: 12424 [2022-03-03 18:01:16,935 INFO L226 Difference]: Without dead ends: 12322 [2022-03-03 18:01:16,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4013 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1765, Invalid=11807, Unknown=0, NotChecked=0, Total=13572 [2022-03-03 18:01:16,938 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 776 mSDsluCounter, 3439 mSDsCounter, 0 mSdLazyCounter, 1771 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 3494 SdHoareTripleChecker+Invalid, 1928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:16,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [776 Valid, 3494 Invalid, 1928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1771 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:01:16,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12322 states. [2022-03-03 18:01:17,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12322 to 10357. [2022-03-03 18:01:17,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10357 states, 10356 states have (on average 2.898609501738123) internal successors, (30018), 10356 states have internal predecessors, (30018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:17,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10357 states to 10357 states and 30018 transitions. [2022-03-03 18:01:17,239 INFO L78 Accepts]: Start accepts. Automaton has 10357 states and 30018 transitions. Word has length 78 [2022-03-03 18:01:17,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:17,239 INFO L470 AbstractCegarLoop]: Abstraction has 10357 states and 30018 transitions. [2022-03-03 18:01:17,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:17,239 INFO L276 IsEmpty]: Start isEmpty. Operand 10357 states and 30018 transitions. [2022-03-03 18:01:17,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 18:01:17,259 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:17,259 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:17,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Ended with exit code 0 [2022-03-03 18:01:17,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:17,459 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:17,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:17,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1986671687, now seen corresponding path program 155 times [2022-03-03 18:01:17,460 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:17,460 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565530376] [2022-03-03 18:01:17,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:17,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:17,648 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:17,648 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:17,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565530376] [2022-03-03 18:01:17,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565530376] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:01:17,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752211439] [2022-03-03 18:01:17,649 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:01:17,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:17,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:01:17,650 INFO L229 MonitoredProcess]: Starting monitored process 156 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:01:17,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2022-03-03 18:01:17,798 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 18:01:17,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:01:17,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:01:17,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:01:18,135 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:01:18,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:01:18,556 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:01:18,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752211439] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:01:18,557 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:01:18,557 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-03 18:01:18,557 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646398475] [2022-03-03 18:01:18,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:01:18,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-03 18:01:18,557 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:18,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-03 18:01:18,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1191, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 18:01:18,558 INFO L87 Difference]: Start difference. First operand 10357 states and 30018 transitions. Second operand has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:21,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:21,312 INFO L93 Difference]: Finished difference Result 11180 states and 32193 transitions. [2022-03-03 18:01:21,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-03-03 18:01:21,312 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 18:01:21,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:21,337 INFO L225 Difference]: With dead ends: 11180 [2022-03-03 18:01:21,337 INFO L226 Difference]: Without dead ends: 11077 [2022-03-03 18:01:21,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4372 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2057, Invalid=11985, Unknown=0, NotChecked=0, Total=14042 [2022-03-03 18:01:21,340 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 728 mSDsluCounter, 3273 mSDsCounter, 0 mSdLazyCounter, 1612 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 3356 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:21,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 3356 Invalid, 1764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1612 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 18:01:21,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11077 states. [2022-03-03 18:01:21,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11077 to 9941. [2022-03-03 18:01:21,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9941 states, 9940 states have (on average 2.8867203219315893) internal successors, (28694), 9940 states have internal predecessors, (28694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:21,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9941 states to 9941 states and 28694 transitions. [2022-03-03 18:01:21,550 INFO L78 Accepts]: Start accepts. Automaton has 9941 states and 28694 transitions. Word has length 78 [2022-03-03 18:01:21,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:21,550 INFO L470 AbstractCegarLoop]: Abstraction has 9941 states and 28694 transitions. [2022-03-03 18:01:21,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:21,550 INFO L276 IsEmpty]: Start isEmpty. Operand 9941 states and 28694 transitions. [2022-03-03 18:01:21,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 18:01:21,567 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:21,567 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:21,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Forceful destruction successful, exit code 0 [2022-03-03 18:01:21,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,156 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:21,768 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:21,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:21,768 INFO L85 PathProgramCache]: Analyzing trace with hash -2025068431, now seen corresponding path program 156 times [2022-03-03 18:01:21,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:21,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374467477] [2022-03-03 18:01:21,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:21,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:21,971 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:21,971 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374467477] [2022-03-03 18:01:21,971 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374467477] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:01:21,971 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679082863] [2022-03-03 18:01:21,971 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:01:21,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:21,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:01:21,972 INFO L229 MonitoredProcess]: Starting monitored process 157 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:01:21,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2022-03-03 18:01:22,123 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 18:01:22,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:01:22,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 18:01:22,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:01:22,517 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:22,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:01:23,209 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:23,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679082863] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:01:23,209 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:01:23,209 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-03 18:01:23,209 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110103300] [2022-03-03 18:01:23,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:01:23,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-03 18:01:23,210 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:23,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-03 18:01:23,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1521, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 18:01:23,210 INFO L87 Difference]: Start difference. First operand 9941 states and 28694 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:25,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:25,810 INFO L93 Difference]: Finished difference Result 12896 states and 36946 transitions. [2022-03-03 18:01:25,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-03-03 18:01:25,810 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 18:01:25,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:25,834 INFO L225 Difference]: With dead ends: 12896 [2022-03-03 18:01:25,834 INFO L226 Difference]: Without dead ends: 12810 [2022-03-03 18:01:25,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3448 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1600, Invalid=9956, Unknown=0, NotChecked=0, Total=11556 [2022-03-03 18:01:25,836 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 594 mSDsluCounter, 3408 mSDsCounter, 0 mSdLazyCounter, 1908 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 3484 SdHoareTripleChecker+Invalid, 2018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:25,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 3484 Invalid, 2018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1908 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:01:25,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12810 states. [2022-03-03 18:01:25,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12810 to 10041. [2022-03-03 18:01:26,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10041 states, 10040 states have (on average 2.885358565737052) internal successors, (28969), 10040 states have internal predecessors, (28969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:26,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10041 states to 10041 states and 28969 transitions. [2022-03-03 18:01:26,029 INFO L78 Accepts]: Start accepts. Automaton has 10041 states and 28969 transitions. Word has length 78 [2022-03-03 18:01:26,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:26,029 INFO L470 AbstractCegarLoop]: Abstraction has 10041 states and 28969 transitions. [2022-03-03 18:01:26,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:26,029 INFO L276 IsEmpty]: Start isEmpty. Operand 10041 states and 28969 transitions. [2022-03-03 18:01:26,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 18:01:26,043 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:26,044 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:26,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Forceful destruction successful, exit code 0 [2022-03-03 18:01:26,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2022-03-03 18:01:26,244 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:26,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:26,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1304210485, now seen corresponding path program 157 times [2022-03-03 18:01:26,245 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:26,245 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056214460] [2022-03-03 18:01:26,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:26,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:26,458 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:26,458 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:26,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056214460] [2022-03-03 18:01:26,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056214460] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:01:26,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107400554] [2022-03-03 18:01:26,458 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:01:26,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:26,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:01:26,459 INFO L229 MonitoredProcess]: Starting monitored process 158 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:01:26,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2022-03-03 18:01:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:26,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 18:01:26,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:01:26,935 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:26,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:01:27,648 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:27,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107400554] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:01:27,648 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:01:27,648 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-03 18:01:27,648 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804517721] [2022-03-03 18:01:27,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:01:27,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-03 18:01:27,648 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:27,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-03 18:01:27,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1519, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 18:01:27,649 INFO L87 Difference]: Start difference. First operand 10041 states and 28969 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:31,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:31,025 INFO L93 Difference]: Finished difference Result 13244 states and 38083 transitions. [2022-03-03 18:01:31,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-03-03 18:01:31,026 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 18:01:31,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:31,064 INFO L225 Difference]: With dead ends: 13244 [2022-03-03 18:01:31,064 INFO L226 Difference]: Without dead ends: 13158 [2022-03-03 18:01:31,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3981 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1819, Invalid=10837, Unknown=0, NotChecked=0, Total=12656 [2022-03-03 18:01:31,066 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 721 mSDsluCounter, 3554 mSDsCounter, 0 mSdLazyCounter, 2049 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:31,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [721 Valid, 3647 Invalid, 2176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2049 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 18:01:31,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13158 states. [2022-03-03 18:01:31,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13158 to 9961. [2022-03-03 18:01:31,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9961 states, 9960 states have (on average 2.88644578313253) internal successors, (28749), 9960 states have internal predecessors, (28749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:31,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9961 states to 9961 states and 28749 transitions. [2022-03-03 18:01:31,342 INFO L78 Accepts]: Start accepts. Automaton has 9961 states and 28749 transitions. Word has length 78 [2022-03-03 18:01:31,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:31,342 INFO L470 AbstractCegarLoop]: Abstraction has 9961 states and 28749 transitions. [2022-03-03 18:01:31,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:31,342 INFO L276 IsEmpty]: Start isEmpty. Operand 9961 states and 28749 transitions. [2022-03-03 18:01:31,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 18:01:31,408 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:31,408 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:31,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Forceful destruction successful, exit code 0 [2022-03-03 18:01:31,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2022-03-03 18:01:31,608 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:31,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:31,609 INFO L85 PathProgramCache]: Analyzing trace with hash 460003775, now seen corresponding path program 158 times [2022-03-03 18:01:31,609 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:31,609 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058027261] [2022-03-03 18:01:31,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:31,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:31,813 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:31,814 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:31,814 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058027261] [2022-03-03 18:01:31,814 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058027261] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:01:31,814 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219812509] [2022-03-03 18:01:31,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:01:31,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:31,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:01:31,815 INFO L229 MonitoredProcess]: Starting monitored process 159 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:01:31,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2022-03-03 18:01:31,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:01:31,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:01:31,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 18:01:31,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:01:32,380 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:32,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:01:33,190 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:33,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219812509] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:01:33,190 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:01:33,190 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-03 18:01:33,190 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17626742] [2022-03-03 18:01:33,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:01:33,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-03 18:01:33,191 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:33,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-03 18:01:33,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1534, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 18:01:33,192 INFO L87 Difference]: Start difference. First operand 9961 states and 28749 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:35,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:35,643 INFO L93 Difference]: Finished difference Result 11948 states and 34086 transitions. [2022-03-03 18:01:35,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-03 18:01:35,644 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 18:01:35,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:35,675 INFO L225 Difference]: With dead ends: 11948 [2022-03-03 18:01:35,675 INFO L226 Difference]: Without dead ends: 11862 [2022-03-03 18:01:35,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2365 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1115, Invalid=7257, Unknown=0, NotChecked=0, Total=8372 [2022-03-03 18:01:35,677 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 476 mSDsluCounter, 4063 mSDsCounter, 0 mSdLazyCounter, 2067 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 4111 SdHoareTripleChecker+Invalid, 2147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:35,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 4111 Invalid, 2147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2067 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 18:01:35,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11862 states. [2022-03-03 18:01:35,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11862 to 10057. [2022-03-03 18:01:35,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10057 states, 10056 states have (on average 2.885938743038982) internal successors, (29021), 10056 states have internal predecessors, (29021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:35,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10057 states to 10057 states and 29021 transitions. [2022-03-03 18:01:35,948 INFO L78 Accepts]: Start accepts. Automaton has 10057 states and 29021 transitions. Word has length 78 [2022-03-03 18:01:35,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:35,948 INFO L470 AbstractCegarLoop]: Abstraction has 10057 states and 29021 transitions. [2022-03-03 18:01:35,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:35,948 INFO L276 IsEmpty]: Start isEmpty. Operand 10057 states and 29021 transitions. [2022-03-03 18:01:35,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 18:01:35,968 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:35,968 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:35,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Forceful destruction successful, exit code 0 [2022-03-03 18:01:36,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,159 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:36,183 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:36,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:36,184 INFO L85 PathProgramCache]: Analyzing trace with hash -638244689, now seen corresponding path program 159 times [2022-03-03 18:01:36,184 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:36,184 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45644527] [2022-03-03 18:01:36,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:36,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:36,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:36,416 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:36,416 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45644527] [2022-03-03 18:01:36,416 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45644527] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:01:36,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087028265] [2022-03-03 18:01:36,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:01:36,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:36,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:01:36,421 INFO L229 MonitoredProcess]: Starting monitored process 160 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:01:36,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2022-03-03 18:01:36,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 18:01:36,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:01:36,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:01:36,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:01:36,990 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:01:36,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:01:37,404 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:01:37,404 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087028265] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:01:37,404 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:01:37,404 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-03 18:01:37,404 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253182950] [2022-03-03 18:01:37,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:01:37,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-03 18:01:37,405 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:37,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-03 18:01:37,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1185, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 18:01:37,405 INFO L87 Difference]: Start difference. First operand 10057 states and 29021 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:40,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:40,272 INFO L93 Difference]: Finished difference Result 10939 states and 31356 transitions. [2022-03-03 18:01:40,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-03-03 18:01:40,272 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 18:01:40,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:40,300 INFO L225 Difference]: With dead ends: 10939 [2022-03-03 18:01:40,300 INFO L226 Difference]: Without dead ends: 10853 [2022-03-03 18:01:40,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4774 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2099, Invalid=13153, Unknown=0, NotChecked=0, Total=15252 [2022-03-03 18:01:40,303 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 700 mSDsluCounter, 3631 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 3724 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:40,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 3724 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:01:40,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10853 states. [2022-03-03 18:01:40,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10853 to 9813. [2022-03-03 18:01:40,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9813 states, 9812 states have (on average 2.881165919282511) internal successors, (28270), 9812 states have internal predecessors, (28270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:40,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9813 states to 9813 states and 28270 transitions. [2022-03-03 18:01:40,541 INFO L78 Accepts]: Start accepts. Automaton has 9813 states and 28270 transitions. Word has length 78 [2022-03-03 18:01:40,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:40,541 INFO L470 AbstractCegarLoop]: Abstraction has 9813 states and 28270 transitions. [2022-03-03 18:01:40,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:40,541 INFO L276 IsEmpty]: Start isEmpty. Operand 9813 states and 28270 transitions. [2022-03-03 18:01:40,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 18:01:40,560 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:40,560 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:40,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Ended with exit code 0 [2022-03-03 18:01:40,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,160 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:40,761 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:40,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:40,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1603933069, now seen corresponding path program 160 times [2022-03-03 18:01:40,762 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:40,762 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162192344] [2022-03-03 18:01:40,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:40,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:40,961 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:40,961 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:40,961 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162192344] [2022-03-03 18:01:40,962 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162192344] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:01:40,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017590835] [2022-03-03 18:01:40,962 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:01:40,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:40,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:01:40,963 INFO L229 MonitoredProcess]: Starting monitored process 161 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:01:40,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2022-03-03 18:01:41,118 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:01:41,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:01:41,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:01:41,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:01:41,591 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:41,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:01:42,297 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:42,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017590835] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:01:42,297 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:01:42,297 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2022-03-03 18:01:42,297 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940973474] [2022-03-03 18:01:42,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:01:42,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-03 18:01:42,298 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:42,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-03 18:01:42,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1810, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 18:01:42,298 INFO L87 Difference]: Start difference. First operand 9813 states and 28270 transitions. Second operand has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:46,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:46,557 INFO L93 Difference]: Finished difference Result 12362 states and 35437 transitions. [2022-03-03 18:01:46,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-03-03 18:01:46,557 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 18:01:46,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:46,591 INFO L225 Difference]: With dead ends: 12362 [2022-03-03 18:01:46,591 INFO L226 Difference]: Without dead ends: 12276 [2022-03-03 18:01:46,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7188 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2692, Invalid=19360, Unknown=0, NotChecked=0, Total=22052 [2022-03-03 18:01:46,595 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 1182 mSDsluCounter, 4254 mSDsCounter, 0 mSdLazyCounter, 2150 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 4279 SdHoareTripleChecker+Invalid, 2382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 2150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:46,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1182 Valid, 4279 Invalid, 2382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 2150 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 18:01:46,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12276 states. [2022-03-03 18:01:46,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12276 to 10205. [2022-03-03 18:01:46,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10205 states, 10204 states have (on average 2.8808310466483733) internal successors, (29396), 10204 states have internal predecessors, (29396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:46,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10205 states to 10205 states and 29396 transitions. [2022-03-03 18:01:46,864 INFO L78 Accepts]: Start accepts. Automaton has 10205 states and 29396 transitions. Word has length 78 [2022-03-03 18:01:46,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:46,865 INFO L470 AbstractCegarLoop]: Abstraction has 10205 states and 29396 transitions. [2022-03-03 18:01:46,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:46,865 INFO L276 IsEmpty]: Start isEmpty. Operand 10205 states and 29396 transitions. [2022-03-03 18:01:46,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 18:01:46,885 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:46,885 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:46,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Ended with exit code 0 [2022-03-03 18:01:47,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,161 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:47,085 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:47,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:47,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1563789765, now seen corresponding path program 161 times [2022-03-03 18:01:47,086 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:47,086 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548651879] [2022-03-03 18:01:47,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:47,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:47,294 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:47,295 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:47,295 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548651879] [2022-03-03 18:01:47,295 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548651879] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:01:47,295 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600310160] [2022-03-03 18:01:47,295 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:01:47,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:47,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:01:47,297 INFO L229 MonitoredProcess]: Starting monitored process 162 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:01:47,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Waiting until timeout for monitored process [2022-03-03 18:01:47,447 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 18:01:47,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:01:47,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:01:47,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:01:47,913 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:01:47,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:01:48,369 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:01:48,369 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600310160] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:01:48,369 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:01:48,369 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-03 18:01:48,370 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2735799] [2022-03-03 18:01:48,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:01:48,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-03 18:01:48,370 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:48,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-03 18:01:48,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1199, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 18:01:48,370 INFO L87 Difference]: Start difference. First operand 10205 states and 29396 transitions. Second operand has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:50,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:50,700 INFO L93 Difference]: Finished difference Result 11576 states and 33122 transitions. [2022-03-03 18:01:50,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-03-03 18:01:50,700 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 18:01:50,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:50,731 INFO L225 Difference]: With dead ends: 11576 [2022-03-03 18:01:50,731 INFO L226 Difference]: Without dead ends: 11469 [2022-03-03 18:01:50,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3105 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1345, Invalid=9367, Unknown=0, NotChecked=0, Total=10712 [2022-03-03 18:01:50,733 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 443 mSDsluCounter, 3562 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 3649 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:50,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 3649 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1560 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 18:01:50,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11469 states. [2022-03-03 18:01:50,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11469 to 10457. [2022-03-03 18:01:50,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10457 states, 10456 states have (on average 2.861610558530987) internal successors, (29921), 10456 states have internal predecessors, (29921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:51,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10457 states to 10457 states and 29921 transitions. [2022-03-03 18:01:51,007 INFO L78 Accepts]: Start accepts. Automaton has 10457 states and 29921 transitions. Word has length 78 [2022-03-03 18:01:51,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:51,007 INFO L470 AbstractCegarLoop]: Abstraction has 10457 states and 29921 transitions. [2022-03-03 18:01:51,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:51,008 INFO L276 IsEmpty]: Start isEmpty. Operand 10457 states and 29921 transitions. [2022-03-03 18:01:51,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 18:01:51,028 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:51,028 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:51,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Forceful destruction successful, exit code 0 [2022-03-03 18:01:51,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,162 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:51,229 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:51,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:51,229 INFO L85 PathProgramCache]: Analyzing trace with hash 948913081, now seen corresponding path program 162 times [2022-03-03 18:01:51,229 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:51,230 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617308662] [2022-03-03 18:01:51,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:51,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:51,427 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:51,428 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:51,428 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617308662] [2022-03-03 18:01:51,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617308662] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:01:51,428 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138530616] [2022-03-03 18:01:51,428 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:01:51,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:51,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:01:51,429 INFO L229 MonitoredProcess]: Starting monitored process 163 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:01:51,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2022-03-03 18:01:51,580 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 18:01:51,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:01:51,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 18:01:51,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:01:51,959 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:51,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:01:52,812 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:52,812 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138530616] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:01:52,812 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:01:52,812 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-03 18:01:52,812 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558884801] [2022-03-03 18:01:52,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:01:52,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-03 18:01:52,813 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:52,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-03 18:01:52,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1554, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 18:01:52,813 INFO L87 Difference]: Start difference. First operand 10457 states and 29921 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:54,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:54,794 INFO L93 Difference]: Finished difference Result 12144 states and 34460 transitions. [2022-03-03 18:01:54,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-03 18:01:54,795 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 18:01:54,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:54,816 INFO L225 Difference]: With dead ends: 12144 [2022-03-03 18:01:54,817 INFO L226 Difference]: Without dead ends: 12078 [2022-03-03 18:01:54,818 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 [2022-03-03 18:01:54,818 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 461 mSDsluCounter, 3993 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 4027 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:54,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 4027 Invalid, 1943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1851 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 18:01:54,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12078 states. [2022-03-03 18:01:54,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12078 to 10461. [2022-03-03 18:01:54,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10461 states, 10460 states have (on average 2.861567877629063) internal successors, (29932), 10460 states have internal predecessors, (29932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:55,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10461 states to 10461 states and 29932 transitions. [2022-03-03 18:01:55,017 INFO L78 Accepts]: Start accepts. Automaton has 10461 states and 29932 transitions. Word has length 78 [2022-03-03 18:01:55,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:55,018 INFO L470 AbstractCegarLoop]: Abstraction has 10461 states and 29932 transitions. [2022-03-03 18:01:55,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:55,018 INFO L276 IsEmpty]: Start isEmpty. Operand 10461 states and 29932 transitions. [2022-03-03 18:01:55,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 18:01:55,035 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:55,036 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:55,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Forceful destruction successful, exit code 0 [2022-03-03 18:01:55,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2022-03-03 18:01:55,237 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:55,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:55,237 INFO L85 PathProgramCache]: Analyzing trace with hash -206351307, now seen corresponding path program 163 times [2022-03-03 18:01:55,237 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:55,238 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269852411] [2022-03-03 18:01:55,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:55,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:55,424 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:55,425 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:55,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269852411] [2022-03-03 18:01:55,425 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269852411] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:01:55,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720866117] [2022-03-03 18:01:55,425 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:01:55,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:55,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:01:55,426 INFO L229 MonitoredProcess]: Starting monitored process 164 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:01:55,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Waiting until timeout for monitored process [2022-03-03 18:01:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:55,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 18:01:55,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:01:55,935 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:55,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:01:56,643 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:56,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720866117] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:01:56,643 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:01:56,643 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-03 18:01:56,645 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453103943] [2022-03-03 18:01:56,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:01:56,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-03 18:01:56,645 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:56,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-03 18:01:56,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1535, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 18:01:56,646 INFO L87 Difference]: Start difference. First operand 10461 states and 29932 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:59,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:59,372 INFO L93 Difference]: Finished difference Result 13518 states and 38297 transitions. [2022-03-03 18:01:59,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-03-03 18:01:59,373 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 18:01:59,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:59,397 INFO L225 Difference]: With dead ends: 13518 [2022-03-03 18:01:59,397 INFO L226 Difference]: Without dead ends: 13440 [2022-03-03 18:01:59,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3711 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1553, Invalid=10657, Unknown=0, NotChecked=0, Total=12210 [2022-03-03 18:01:59,399 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 523 mSDsluCounter, 3874 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 3907 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:59,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 3907 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2118 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:01:59,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13440 states. [2022-03-03 18:01:59,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13440 to 10609. [2022-03-03 18:01:59,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10609 states, 10608 states have (on average 2.8611425339366514) internal successors, (30351), 10608 states have internal predecessors, (30351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:59,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10609 states to 10609 states and 30351 transitions. [2022-03-03 18:01:59,625 INFO L78 Accepts]: Start accepts. Automaton has 10609 states and 30351 transitions. Word has length 78 [2022-03-03 18:01:59,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:59,625 INFO L470 AbstractCegarLoop]: Abstraction has 10609 states and 30351 transitions. [2022-03-03 18:01:59,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:59,625 INFO L276 IsEmpty]: Start isEmpty. Operand 10609 states and 30351 transitions. [2022-03-03 18:01:59,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 18:01:59,640 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:59,640 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:59,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Forceful destruction successful, exit code 0 [2022-03-03 18:01:59,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,164 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:59,840 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:59,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:59,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1628909515, now seen corresponding path program 164 times [2022-03-03 18:01:59,841 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:59,841 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381812710] [2022-03-03 18:01:59,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:59,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:00,019 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:00,019 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:00,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381812710] [2022-03-03 18:02:00,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381812710] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:02:00,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471110023] [2022-03-03 18:02:00,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:02:00,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:02:00,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:02:00,021 INFO L229 MonitoredProcess]: Starting monitored process 165 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:02:00,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Waiting until timeout for monitored process [2022-03-03 18:02:00,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:02:00,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:02:00,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 18:02:00,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:02:00,571 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:00,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:02:01,408 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:01,409 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471110023] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:02:01,409 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:02:01,409 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-03 18:02:01,409 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375016881] [2022-03-03 18:02:01,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:02:01,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-03 18:02:01,409 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:01,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-03 18:02:01,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1562, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 18:02:01,410 INFO L87 Difference]: Start difference. First operand 10609 states and 30351 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:04,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:04,679 INFO L93 Difference]: Finished difference Result 12814 states and 36301 transitions. [2022-03-03 18:02:04,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-03-03 18:02:04,679 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 18:02:04,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:04,715 INFO L225 Difference]: With dead ends: 12814 [2022-03-03 18:02:04,715 INFO L226 Difference]: Without dead ends: 12748 [2022-03-03 18:02:04,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4148 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1593, Invalid=12213, Unknown=0, NotChecked=0, Total=13806 [2022-03-03 18:02:04,717 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 661 mSDsluCounter, 4318 mSDsCounter, 0 mSdLazyCounter, 2176 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 4335 SdHoareTripleChecker+Invalid, 2337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:04,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 4335 Invalid, 2337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 2176 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 18:02:04,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12748 states. [2022-03-03 18:02:04,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12748 to 10709. [2022-03-03 18:02:04,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10709 states, 10708 states have (on average 2.860104594695555) internal successors, (30626), 10708 states have internal predecessors, (30626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:05,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10709 states to 10709 states and 30626 transitions. [2022-03-03 18:02:05,014 INFO L78 Accepts]: Start accepts. Automaton has 10709 states and 30626 transitions. Word has length 78 [2022-03-03 18:02:05,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:05,014 INFO L470 AbstractCegarLoop]: Abstraction has 10709 states and 30626 transitions. [2022-03-03 18:02:05,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:05,015 INFO L276 IsEmpty]: Start isEmpty. Operand 10709 states and 30626 transitions. [2022-03-03 18:02:05,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 18:02:05,034 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:05,034 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:02:05,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Forceful destruction successful, exit code 0 [2022-03-03 18:02:05,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,165 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:02:05,235 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:05,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:05,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1510793393, now seen corresponding path program 165 times [2022-03-03 18:02:05,235 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:05,235 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703611173] [2022-03-03 18:02:05,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:05,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:05,437 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:05,437 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:05,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703611173] [2022-03-03 18:02:05,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703611173] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:02:05,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355532132] [2022-03-03 18:02:05,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:02:05,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:02:05,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:02:05,439 INFO L229 MonitoredProcess]: Starting monitored process 166 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:02:05,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Waiting until timeout for monitored process [2022-03-03 18:02:05,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 18:02:05,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:02:05,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:02:05,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:02:05,956 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:02:05,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:02:06,404 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:02:06,405 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355532132] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:02:06,405 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:02:06,405 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-03 18:02:06,405 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958483924] [2022-03-03 18:02:06,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:02:06,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-03 18:02:06,405 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:06,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-03 18:02:06,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1183, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 18:02:06,406 INFO L87 Difference]: Start difference. First operand 10709 states and 30626 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:09,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:09,802 INFO L93 Difference]: Finished difference Result 14463 states and 41355 transitions. [2022-03-03 18:02:09,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-03-03 18:02:09,802 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 18:02:09,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:09,843 INFO L225 Difference]: With dead ends: 14463 [2022-03-03 18:02:09,843 INFO L226 Difference]: Without dead ends: 14385 [2022-03-03 18:02:09,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4950 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1977, Invalid=13773, Unknown=0, NotChecked=0, Total=15750 [2022-03-03 18:02:09,846 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 581 mSDsluCounter, 5165 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 5216 SdHoareTripleChecker+Invalid, 2541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:09,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 5216 Invalid, 2541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 18:02:09,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14385 states. [2022-03-03 18:02:10,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14385 to 11217. [2022-03-03 18:02:10,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11217 states, 11216 states have (on average 2.8690263908701854) internal successors, (32179), 11216 states have internal predecessors, (32179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:10,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11217 states to 11217 states and 32179 transitions. [2022-03-03 18:02:10,177 INFO L78 Accepts]: Start accepts. Automaton has 11217 states and 32179 transitions. Word has length 78 [2022-03-03 18:02:10,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:10,177 INFO L470 AbstractCegarLoop]: Abstraction has 11217 states and 32179 transitions. [2022-03-03 18:02:10,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:10,178 INFO L276 IsEmpty]: Start isEmpty. Operand 11217 states and 32179 transitions. [2022-03-03 18:02:10,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 18:02:10,201 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:10,201 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:02:10,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Ended with exit code 0 [2022-03-03 18:02:10,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,166 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:02:10,402 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:10,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:10,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1726214867, now seen corresponding path program 166 times [2022-03-03 18:02:10,402 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:10,403 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243873027] [2022-03-03 18:02:10,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:10,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:10,605 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:10,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243873027] [2022-03-03 18:02:10,605 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243873027] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:02:10,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294811096] [2022-03-03 18:02:10,605 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:02:10,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:02:10,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:02:10,607 INFO L229 MonitoredProcess]: Starting monitored process 167 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:02:10,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Waiting until timeout for monitored process [2022-03-03 18:02:10,766 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:02:10,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:02:10,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:02:10,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:02:11,173 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:11,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:02:11,872 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:11,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294811096] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:02:11,873 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:02:11,873 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 40 [2022-03-03 18:02:11,873 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079217493] [2022-03-03 18:02:11,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:02:11,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-03 18:02:11,873 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:11,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-03 18:02:11,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 18:02:11,874 INFO L87 Difference]: Start difference. First operand 11217 states and 32179 transitions. Second operand has 40 states, 40 states have (on average 3.025) internal successors, (121), 40 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:17,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:17,266 INFO L93 Difference]: Finished difference Result 15620 states and 44125 transitions. [2022-03-03 18:02:17,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-03-03 18:02:17,267 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.025) internal successors, (121), 40 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 18:02:17,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:17,310 INFO L225 Difference]: With dead ends: 15620 [2022-03-03 18:02:17,311 INFO L226 Difference]: Without dead ends: 15395 [2022-03-03 18:02:17,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 132 SyntacticMatches, 4 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9696 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3125, Invalid=23935, Unknown=0, NotChecked=0, Total=27060 [2022-03-03 18:02:17,316 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 976 mSDsluCounter, 5097 mSDsCounter, 0 mSdLazyCounter, 2845 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 5058 SdHoareTripleChecker+Invalid, 3052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 2845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:17,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 5058 Invalid, 3052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 2845 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-03 18:02:17,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15395 states. [2022-03-03 18:02:17,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15395 to 11897. [2022-03-03 18:02:17,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11897 states, 11896 states have (on average 2.8639038332212507) internal successors, (34069), 11896 states have internal predecessors, (34069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:17,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11897 states to 11897 states and 34069 transitions. [2022-03-03 18:02:17,760 INFO L78 Accepts]: Start accepts. Automaton has 11897 states and 34069 transitions. Word has length 78 [2022-03-03 18:02:17,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:17,760 INFO L470 AbstractCegarLoop]: Abstraction has 11897 states and 34069 transitions. [2022-03-03 18:02:17,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.025) internal successors, (121), 40 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:17,760 INFO L276 IsEmpty]: Start isEmpty. Operand 11897 states and 34069 transitions. [2022-03-03 18:02:17,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 18:02:17,783 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:17,783 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:02:17,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Forceful destruction successful, exit code 0 [2022-03-03 18:02:17,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,167 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:02:17,984 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:17,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:17,984 INFO L85 PathProgramCache]: Analyzing trace with hash 143966545, now seen corresponding path program 167 times [2022-03-03 18:02:17,984 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:17,985 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149347140] [2022-03-03 18:02:17,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:17,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:18,175 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:18,175 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:18,175 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149347140] [2022-03-03 18:02:18,175 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149347140] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:02:18,175 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071714488] [2022-03-03 18:02:18,176 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:02:18,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:02:18,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:02:18,177 INFO L229 MonitoredProcess]: Starting monitored process 168 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:02:18,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Waiting until timeout for monitored process [2022-03-03 18:02:18,336 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 18:02:18,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:02:18,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 18:02:18,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:02:18,725 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:18,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:02:19,534 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:19,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071714488] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:02:19,534 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:02:19,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-03 18:02:19,535 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916132286] [2022-03-03 18:02:19,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:02:19,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-03 18:02:19,535 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:19,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-03 18:02:19,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 18:02:19,536 INFO L87 Difference]: Start difference. First operand 11897 states and 34069 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:23,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:23,121 INFO L93 Difference]: Finished difference Result 13940 states and 39519 transitions. [2022-03-03 18:02:23,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-03-03 18:02:23,121 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 18:02:23,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:23,160 INFO L225 Difference]: With dead ends: 13940 [2022-03-03 18:02:23,160 INFO L226 Difference]: Without dead ends: 13859 [2022-03-03 18:02:23,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4911 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1745, Invalid=13507, Unknown=0, NotChecked=0, Total=15252 [2022-03-03 18:02:23,163 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 741 mSDsluCounter, 5411 mSDsCounter, 0 mSdLazyCounter, 2639 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 5375 SdHoareTripleChecker+Invalid, 2771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:23,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 5375 Invalid, 2771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2639 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-03 18:02:23,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13859 states. [2022-03-03 18:02:23,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13859 to 12025. [2022-03-03 18:02:23,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12025 states, 12024 states have (on average 2.8660179640718564) internal successors, (34461), 12024 states have internal predecessors, (34461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:23,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12025 states to 12025 states and 34461 transitions. [2022-03-03 18:02:23,520 INFO L78 Accepts]: Start accepts. Automaton has 12025 states and 34461 transitions. Word has length 78 [2022-03-03 18:02:23,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:23,520 INFO L470 AbstractCegarLoop]: Abstraction has 12025 states and 34461 transitions. [2022-03-03 18:02:23,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:23,521 INFO L276 IsEmpty]: Start isEmpty. Operand 12025 states and 34461 transitions. [2022-03-03 18:02:23,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 18:02:23,544 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:23,544 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:02:23,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Forceful destruction successful, exit code 0 [2022-03-03 18:02:23,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 168 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2022-03-03 18:02:23,745 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:23,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:23,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1172360911, now seen corresponding path program 168 times [2022-03-03 18:02:23,746 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:23,746 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29790331] [2022-03-03 18:02:23,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:23,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:23,937 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:23,937 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:23,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29790331] [2022-03-03 18:02:23,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29790331] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:02:23,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958552716] [2022-03-03 18:02:23,937 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:02:23,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:02:23,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:02:23,939 INFO L229 MonitoredProcess]: Starting monitored process 169 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:02:23,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Waiting until timeout for monitored process [2022-03-03 18:02:24,088 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 18:02:24,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:02:24,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:02:24,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:02:24,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:02:24,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:02:24,828 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:02:24,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958552716] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:02:24,828 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:02:24,828 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-03 18:02:24,828 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751242276] [2022-03-03 18:02:24,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:02:24,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-03 18:02:24,828 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:24,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-03 18:02:24,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 18:02:24,829 INFO L87 Difference]: Start difference. First operand 12025 states and 34461 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:28,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:28,273 INFO L93 Difference]: Finished difference Result 16073 states and 45915 transitions. [2022-03-03 18:02:28,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-03-03 18:02:28,274 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 18:02:28,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:28,313 INFO L225 Difference]: With dead ends: 16073 [2022-03-03 18:02:28,313 INFO L226 Difference]: Without dead ends: 15949 [2022-03-03 18:02:28,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8543 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3534, Invalid=21588, Unknown=0, NotChecked=0, Total=25122 [2022-03-03 18:02:28,317 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 1001 mSDsluCounter, 3089 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 3174 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:28,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1001 Valid, 3174 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 18:02:28,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15949 states. [2022-03-03 18:02:28,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15949 to 5553. [2022-03-03 18:02:28,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5553 states, 5552 states have (on average 2.8405979827089336) internal successors, (15771), 5552 states have internal predecessors, (15771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:28,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5553 states to 5553 states and 15771 transitions. [2022-03-03 18:02:28,529 INFO L78 Accepts]: Start accepts. Automaton has 5553 states and 15771 transitions. Word has length 78 [2022-03-03 18:02:28,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:28,529 INFO L470 AbstractCegarLoop]: Abstraction has 5553 states and 15771 transitions. [2022-03-03 18:02:28,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:28,529 INFO L276 IsEmpty]: Start isEmpty. Operand 5553 states and 15771 transitions. [2022-03-03 18:02:28,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 18:02:28,537 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:28,537 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:02:28,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Forceful destruction successful, exit code 0 [2022-03-03 18:02:28,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200,169 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:02:28,737 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:28,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:28,738 INFO L85 PathProgramCache]: Analyzing trace with hash 315095993, now seen corresponding path program 169 times [2022-03-03 18:02:28,738 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:28,738 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256803719] [2022-03-03 18:02:28,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:28,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:28,902 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:28,902 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:28,902 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256803719] [2022-03-03 18:02:28,902 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256803719] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:02:28,902 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027772129] [2022-03-03 18:02:28,902 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:02:28,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:02:28,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:02:28,904 INFO L229 MonitoredProcess]: Starting monitored process 170 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:02:28,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Waiting until timeout for monitored process [2022-03-03 18:02:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:29,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 18:02:29,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:02:29,354 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:29,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:02:30,087 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:30,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027772129] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:02:30,088 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:02:30,088 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2022-03-03 18:02:30,088 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288007593] [2022-03-03 18:02:30,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:02:30,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 18:02:30,088 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:30,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 18:02:30,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1489, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 18:02:30,089 INFO L87 Difference]: Start difference. First operand 5553 states and 15771 transitions. Second operand has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:36,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:36,293 INFO L93 Difference]: Finished difference Result 8553 states and 23935 transitions. [2022-03-03 18:02:36,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2022-03-03 18:02:36,294 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 18:02:36,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:36,312 INFO L225 Difference]: With dead ends: 8553 [2022-03-03 18:02:36,312 INFO L226 Difference]: Without dead ends: 8472 [2022-03-03 18:02:36,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 131 SyntacticMatches, 4 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13300 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=3909, Invalid=33147, Unknown=0, NotChecked=0, Total=37056 [2022-03-03 18:02:36,317 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 786 mSDsluCounter, 4993 mSDsCounter, 0 mSdLazyCounter, 2292 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 4988 SdHoareTripleChecker+Invalid, 2468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:36,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [786 Valid, 4988 Invalid, 2468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 2292 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 18:02:36,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8472 states. [2022-03-03 18:02:36,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8472 to 5817. [2022-03-03 18:02:36,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5817 states, 5816 states have (on average 2.8371733149931226) internal successors, (16501), 5816 states have internal predecessors, (16501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:36,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5817 states to 5817 states and 16501 transitions. [2022-03-03 18:02:36,437 INFO L78 Accepts]: Start accepts. Automaton has 5817 states and 16501 transitions. Word has length 78 [2022-03-03 18:02:36,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:36,438 INFO L470 AbstractCegarLoop]: Abstraction has 5817 states and 16501 transitions. [2022-03-03 18:02:36,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:36,438 INFO L276 IsEmpty]: Start isEmpty. Operand 5817 states and 16501 transitions. [2022-03-03 18:02:36,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 18:02:36,446 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:36,446 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:02:36,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Forceful destruction successful, exit code 0 [2022-03-03 18:02:36,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 170 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2022-03-03 18:02:36,646 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:36,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:36,647 INFO L85 PathProgramCache]: Analyzing trace with hash 2087972053, now seen corresponding path program 170 times [2022-03-03 18:02:36,647 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:36,647 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364068365] [2022-03-03 18:02:36,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:36,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:36,850 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:36,850 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:36,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364068365] [2022-03-03 18:02:36,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364068365] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:02:36,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555530204] [2022-03-03 18:02:36,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:02:36,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:02:36,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:02:36,852 INFO L229 MonitoredProcess]: Starting monitored process 171 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:02:36,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Waiting until timeout for monitored process [2022-03-03 18:02:37,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:02:37,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:02:37,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 18:02:37,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:02:37,392 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:37,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:02:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:38,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555530204] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:02:38,223 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:02:38,223 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2022-03-03 18:02:38,223 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695568768] [2022-03-03 18:02:38,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:02:38,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 18:02:38,223 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:38,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 18:02:38,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1483, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 18:02:38,224 INFO L87 Difference]: Start difference. First operand 5817 states and 16501 transitions. Second operand has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:43,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:43,453 INFO L93 Difference]: Finished difference Result 8475 states and 23655 transitions. [2022-03-03 18:02:43,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-03-03 18:02:43,454 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 18:02:43,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:43,474 INFO L225 Difference]: With dead ends: 8475 [2022-03-03 18:02:43,474 INFO L226 Difference]: Without dead ends: 8394 [2022-03-03 18:02:43,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 131 SyntacticMatches, 4 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7756 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2589, Invalid=20363, Unknown=0, NotChecked=0, Total=22952 [2022-03-03 18:02:43,478 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 865 mSDsluCounter, 5557 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 5479 SdHoareTripleChecker+Invalid, 2696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:43,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 5479 Invalid, 2696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2528 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 18:02:43,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8394 states. [2022-03-03 18:02:43,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8394 to 6105. [2022-03-03 18:02:43,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6105 states, 6104 states have (on average 2.838302752293578) internal successors, (17325), 6104 states have internal predecessors, (17325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:43,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6105 states to 6105 states and 17325 transitions. [2022-03-03 18:02:43,634 INFO L78 Accepts]: Start accepts. Automaton has 6105 states and 17325 transitions. Word has length 78 [2022-03-03 18:02:43,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:43,634 INFO L470 AbstractCegarLoop]: Abstraction has 6105 states and 17325 transitions. [2022-03-03 18:02:43,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:43,635 INFO L276 IsEmpty]: Start isEmpty. Operand 6105 states and 17325 transitions. [2022-03-03 18:02:43,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 18:02:43,645 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:43,646 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:02:43,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Forceful destruction successful, exit code 0 [2022-03-03 18:02:43,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2022-03-03 18:02:43,846 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:43,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:43,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1315963339, now seen corresponding path program 171 times [2022-03-03 18:02:43,847 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:43,847 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834122985] [2022-03-03 18:02:43,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:43,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:02:44,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:44,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834122985] [2022-03-03 18:02:44,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834122985] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:02:44,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832071392] [2022-03-03 18:02:44,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:02:44,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:02:44,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:02:44,035 INFO L229 MonitoredProcess]: Starting monitored process 172 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:02:44,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Waiting until timeout for monitored process [2022-03-03 18:02:44,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 18:02:44,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:02:44,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 18:02:44,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:02:44,544 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:02:44,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:02:45,022 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 18:02:45,022 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832071392] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:02:45,022 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:02:45,022 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 15] total 36 [2022-03-03 18:02:45,022 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109595026] [2022-03-03 18:02:45,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:02:45,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-03 18:02:45,023 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:45,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-03 18:02:45,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1135, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 18:02:45,023 INFO L87 Difference]: Start difference. First operand 6105 states and 17325 transitions. Second operand has 36 states, 36 states have (on average 3.3055555555555554) internal successors, (119), 36 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:48,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:48,660 INFO L93 Difference]: Finished difference Result 7797 states and 21911 transitions. [2022-03-03 18:02:48,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-03-03 18:02:48,661 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3055555555555554) internal successors, (119), 36 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 18:02:48,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:48,679 INFO L225 Difference]: With dead ends: 7797 [2022-03-03 18:02:48,679 INFO L226 Difference]: Without dead ends: 7731 [2022-03-03 18:02:48,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 136 SyntacticMatches, 4 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8673 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3430, Invalid=21692, Unknown=0, NotChecked=0, Total=25122 [2022-03-03 18:02:48,683 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 748 mSDsluCounter, 3608 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 3629 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:48,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [748 Valid, 3629 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1636 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 18:02:48,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7731 states. [2022-03-03 18:02:48,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7731 to 5501. [2022-03-03 18:02:48,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5501 states, 5500 states have (on average 2.829818181818182) internal successors, (15564), 5500 states have internal predecessors, (15564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:48,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5501 states to 5501 states and 15564 transitions. [2022-03-03 18:02:48,806 INFO L78 Accepts]: Start accepts. Automaton has 5501 states and 15564 transitions. Word has length 78 [2022-03-03 18:02:48,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:48,807 INFO L470 AbstractCegarLoop]: Abstraction has 5501 states and 15564 transitions. [2022-03-03 18:02:48,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.3055555555555554) internal successors, (119), 36 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:48,807 INFO L276 IsEmpty]: Start isEmpty. Operand 5501 states and 15564 transitions. [2022-03-03 18:02:48,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 18:02:48,816 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:48,816 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:02:48,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Forceful destruction successful, exit code 0 [2022-03-03 18:02:49,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 172 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable203 [2022-03-03 18:02:49,016 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:49,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:49,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1749447751, now seen corresponding path program 172 times [2022-03-03 18:02:49,017 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:49,017 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365635441] [2022-03-03 18:02:49,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:49,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:49,210 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:49,211 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:49,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365635441] [2022-03-03 18:02:49,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365635441] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:02:49,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410478158] [2022-03-03 18:02:49,211 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:02:49,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:02:49,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:02:49,228 INFO L229 MonitoredProcess]: Starting monitored process 173 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:02:49,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Waiting until timeout for monitored process [2022-03-03 18:02:49,391 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:02:49,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:02:49,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:02:49,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:02:49,705 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:49,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:02:50,436 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:50,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410478158] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:02:50,436 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:02:50,436 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 36 [2022-03-03 18:02:50,436 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680091678] [2022-03-03 18:02:50,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:02:50,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-03 18:02:50,437 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:50,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-03 18:02:50,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1138, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 18:02:50,437 INFO L87 Difference]: Start difference. First operand 5501 states and 15564 transitions. Second operand has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:56,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:02:56,346 INFO L93 Difference]: Finished difference Result 10735 states and 30047 transitions. [2022-03-03 18:02:56,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-03-03 18:02:56,347 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 18:02:56,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:02:56,365 INFO L225 Difference]: With dead ends: 10735 [2022-03-03 18:02:56,365 INFO L226 Difference]: Without dead ends: 10567 [2022-03-03 18:02:56,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 136 SyntacticMatches, 4 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12559 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=4629, Invalid=28313, Unknown=0, NotChecked=0, Total=32942 [2022-03-03 18:02:56,369 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 1101 mSDsluCounter, 3745 mSDsCounter, 0 mSdLazyCounter, 1985 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 3749 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:56,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1101 Valid, 3749 Invalid, 2221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1985 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-03 18:02:56,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10567 states. [2022-03-03 18:02:56,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10567 to 7401. [2022-03-03 18:02:56,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7401 states, 7400 states have (on average 2.877972972972973) internal successors, (21297), 7400 states have internal predecessors, (21297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:56,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7401 states to 7401 states and 21297 transitions. [2022-03-03 18:02:56,562 INFO L78 Accepts]: Start accepts. Automaton has 7401 states and 21297 transitions. Word has length 78 [2022-03-03 18:02:56,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:02:56,562 INFO L470 AbstractCegarLoop]: Abstraction has 7401 states and 21297 transitions. [2022-03-03 18:02:56,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:02:56,562 INFO L276 IsEmpty]: Start isEmpty. Operand 7401 states and 21297 transitions. [2022-03-03 18:02:56,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 18:02:56,572 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:02:56,572 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:02:56,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Forceful destruction successful, exit code 0 [2022-03-03 18:02:56,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204,173 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:02:56,773 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:02:56,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:02:56,773 INFO L85 PathProgramCache]: Analyzing trace with hash 623584733, now seen corresponding path program 173 times [2022-03-03 18:02:56,773 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:02:56,773 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351961403] [2022-03-03 18:02:56,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:02:56,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:02:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:02:56,920 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:56,920 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:02:56,920 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351961403] [2022-03-03 18:02:56,920 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351961403] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:02:56,920 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331575411] [2022-03-03 18:02:56,920 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:02:56,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:02:56,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:02:56,921 INFO L229 MonitoredProcess]: Starting monitored process 174 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:02:56,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Waiting until timeout for monitored process [2022-03-03 18:02:57,056 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 18:02:57,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:02:57,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 18:02:57,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:02:57,470 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:57,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:02:58,164 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:02:58,164 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331575411] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:02:58,164 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:02:58,164 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 20] total 46 [2022-03-03 18:02:58,164 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637644857] [2022-03-03 18:02:58,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:02:58,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-03 18:02:58,164 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:02:58,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-03 18:02:58,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1891, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 18:02:58,165 INFO L87 Difference]: Start difference. First operand 7401 states and 21297 transitions. Second operand has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:14,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:14,198 INFO L93 Difference]: Finished difference Result 19985 states and 56953 transitions. [2022-03-03 18:03:14,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 312 states. [2022-03-03 18:03:14,199 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 18:03:14,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:14,252 INFO L225 Difference]: With dead ends: 19985 [2022-03-03 18:03:14,252 INFO L226 Difference]: Without dead ends: 19759 [2022-03-03 18:03:14,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 126 SyntacticMatches, 4 SemanticMatches, 346 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49321 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=13607, Invalid=107149, Unknown=0, NotChecked=0, Total=120756 [2022-03-03 18:03:14,263 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 2095 mSDsluCounter, 7381 mSDsCounter, 0 mSdLazyCounter, 4201 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2095 SdHoareTripleChecker+Valid, 7343 SdHoareTripleChecker+Invalid, 4670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 4201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:14,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2095 Valid, 7343 Invalid, 4670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 4201 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-03 18:03:14,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19759 states. [2022-03-03 18:03:14,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19759 to 11256. [2022-03-03 18:03:14,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11256 states, 11255 states have (on average 2.9018214127054645) internal successors, (32660), 11255 states have internal predecessors, (32660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:14,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11256 states to 11256 states and 32660 transitions. [2022-03-03 18:03:14,659 INFO L78 Accepts]: Start accepts. Automaton has 11256 states and 32660 transitions. Word has length 78 [2022-03-03 18:03:14,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:14,659 INFO L470 AbstractCegarLoop]: Abstraction has 11256 states and 32660 transitions. [2022-03-03 18:03:14,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:14,659 INFO L276 IsEmpty]: Start isEmpty. Operand 11256 states and 32660 transitions. [2022-03-03 18:03:14,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 18:03:14,680 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:14,680 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:14,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Forceful destruction successful, exit code 0 [2022-03-03 18:03:14,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205,174 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:03:14,881 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:14,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:14,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1716786247, now seen corresponding path program 174 times [2022-03-03 18:03:14,881 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:14,882 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381827298] [2022-03-03 18:03:14,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:14,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:15,058 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:15,059 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:15,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381827298] [2022-03-03 18:03:15,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381827298] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:03:15,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066480420] [2022-03-03 18:03:15,059 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:03:15,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:03:15,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:03:15,060 INFO L229 MonitoredProcess]: Starting monitored process 175 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:03:15,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Waiting until timeout for monitored process [2022-03-03 18:03:15,228 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 18:03:15,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:03:15,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 18:03:15,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:03:15,703 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:15,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:03:16,533 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:16,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066480420] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:03:16,534 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:03:16,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 20] total 46 [2022-03-03 18:03:16,534 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051370138] [2022-03-03 18:03:16,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:03:16,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-03 18:03:16,534 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:16,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-03 18:03:16,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1901, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 18:03:16,535 INFO L87 Difference]: Start difference. First operand 11256 states and 32660 transitions. Second operand has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:29,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:29,572 INFO L93 Difference]: Finished difference Result 19167 states and 54528 transitions. [2022-03-03 18:03:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 280 states. [2022-03-03 18:03:29,572 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 18:03:29,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:29,610 INFO L225 Difference]: With dead ends: 19167 [2022-03-03 18:03:29,611 INFO L226 Difference]: Without dead ends: 18556 [2022-03-03 18:03:29,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 126 SyntacticMatches, 4 SemanticMatches, 314 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39536 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=11399, Invalid=88141, Unknown=0, NotChecked=0, Total=99540 [2022-03-03 18:03:29,617 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 2008 mSDsluCounter, 6652 mSDsCounter, 0 mSdLazyCounter, 3456 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2008 SdHoareTripleChecker+Valid, 6649 SdHoareTripleChecker+Invalid, 3900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 3456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:29,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2008 Valid, 6649 Invalid, 3900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 3456 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-03 18:03:29,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18556 states. [2022-03-03 18:03:29,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18556 to 11624. [2022-03-03 18:03:29,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11624 states, 11623 states have (on average 2.8925406521552093) internal successors, (33620), 11623 states have internal predecessors, (33620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:29,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11624 states to 11624 states and 33620 transitions. [2022-03-03 18:03:29,862 INFO L78 Accepts]: Start accepts. Automaton has 11624 states and 33620 transitions. Word has length 78 [2022-03-03 18:03:29,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:03:29,862 INFO L470 AbstractCegarLoop]: Abstraction has 11624 states and 33620 transitions. [2022-03-03 18:03:29,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:29,862 INFO L276 IsEmpty]: Start isEmpty. Operand 11624 states and 33620 transitions. [2022-03-03 18:03:29,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-03 18:03:29,878 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:03:29,878 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:03:29,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Ended with exit code 0 [2022-03-03 18:03:30,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2022-03-03 18:03:30,078 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:03:30,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:03:30,079 INFO L85 PathProgramCache]: Analyzing trace with hash -115417865, now seen corresponding path program 175 times [2022-03-03 18:03:30,079 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:03:30,079 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139200383] [2022-03-03 18:03:30,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:03:30,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:03:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:30,294 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:30,294 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:03:30,294 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139200383] [2022-03-03 18:03:30,294 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139200383] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:03:30,294 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316809308] [2022-03-03 18:03:30,294 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:03:30,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:03:30,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:03:30,295 INFO L229 MonitoredProcess]: Starting monitored process 176 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:03:30,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Waiting until timeout for monitored process [2022-03-03 18:03:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:03:30,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 18:03:30,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:03:30,757 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:30,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:03:31,439 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:03:31,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316809308] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:03:31,439 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:03:31,439 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2022-03-03 18:03:31,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676078730] [2022-03-03 18:03:31,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:03:31,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 18:03:31,439 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:03:31,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 18:03:31,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1477, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 18:03:31,440 INFO L87 Difference]: Start difference. First operand 11624 states and 33620 transitions. Second operand has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:03:40,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:03:40,804 INFO L93 Difference]: Finished difference Result 23195 states and 66287 transitions. [2022-03-03 18:03:40,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2022-03-03 18:03:40,804 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-03 18:03:40,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:03:40,868 INFO L225 Difference]: With dead ends: 23195 [2022-03-03 18:03:40,869 INFO L226 Difference]: Without dead ends: 22407 [2022-03-03 18:03:40,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 131 SyntacticMatches, 4 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21092 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=7444, Invalid=46612, Unknown=0, NotChecked=0, Total=54056 [2022-03-03 18:03:40,875 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 1334 mSDsluCounter, 5159 mSDsCounter, 0 mSdLazyCounter, 2906 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 5180 SdHoareTripleChecker+Invalid, 3124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 2906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:03:40,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1334 Valid, 5180 Invalid, 3124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 2906 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-03 18:03:40,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22407 states. Received shutdown request... [2022-03-03 18:03:40,991 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-03 18:03:41,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Forceful destruction successful, exit code 0 [2022-03-03 18:03:41,029 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-03 18:03:41,029 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-03 18:03:41,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,176 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:03:41,192 WARN L594 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2022-03-03 18:03:41,194 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-03 18:03:41,194 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-03 18:03:41,197 INFO L732 BasicCegarLoop]: Path program histogram: [175, 20, 6, 6, 1] [2022-03-03 18:03:41,199 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-03 18:03:41,199 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-03 18:03:41,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 06:03:41 BasicIcfg [2022-03-03 18:03:41,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-03 18:03:41,201 INFO L158 Benchmark]: Toolchain (without parser) took 741627.11ms. Allocated memory was 173.0MB in the beginning and 1.1GB in the end (delta: 969.9MB). Free memory was 114.8MB in the beginning and 221.0MB in the end (delta: -106.2MB). Peak memory consumption was 863.6MB. Max. memory is 8.0GB. [2022-03-03 18:03:41,201 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 173.0MB. Free memory is still 130.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 18:03:41,201 INFO L158 Benchmark]: CACSL2BoogieTranslator took 202.80ms. Allocated memory was 173.0MB in the beginning and 213.9MB in the end (delta: 40.9MB). Free memory was 114.6MB in the beginning and 184.5MB in the end (delta: -69.8MB). Peak memory consumption was 14.1MB. Max. memory is 8.0GB. [2022-03-03 18:03:41,201 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.17ms. Allocated memory is still 213.9MB. Free memory was 184.5MB in the beginning and 182.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 18:03:41,201 INFO L158 Benchmark]: Boogie Preprocessor took 13.63ms. Allocated memory is still 213.9MB. Free memory was 182.9MB in the beginning and 181.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 18:03:41,201 INFO L158 Benchmark]: RCFGBuilder took 258.66ms. Allocated memory is still 213.9MB. Free memory was 181.9MB in the beginning and 168.7MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-03-03 18:03:41,201 INFO L158 Benchmark]: TraceAbstraction took 741118.93ms. Allocated memory was 213.9MB in the beginning and 1.1GB in the end (delta: 929.0MB). Free memory was 168.2MB in the beginning and 221.0MB in the end (delta: -52.7MB). Peak memory consumption was 877.4MB. Max. memory is 8.0GB. [2022-03-03 18:03:41,201 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 173.0MB. Free memory is still 130.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 202.80ms. Allocated memory was 173.0MB in the beginning and 213.9MB in the end (delta: 40.9MB). Free memory was 114.6MB in the beginning and 184.5MB in the end (delta: -69.8MB). Peak memory consumption was 14.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.17ms. Allocated memory is still 213.9MB. Free memory was 184.5MB in the beginning and 182.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 13.63ms. Allocated memory is still 213.9MB. Free memory was 182.9MB in the beginning and 181.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 258.66ms. Allocated memory is still 213.9MB. Free memory was 181.9MB in the beginning and 168.7MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 741118.93ms. Allocated memory was 213.9MB in the beginning and 1.1GB in the end (delta: 929.0MB). Free memory was 168.2MB in the beginning and 221.0MB in the end (delta: -52.7MB). Peak memory consumption was 877.4MB. 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 executing MinimizeSevpa. - 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 executing MinimizeSevpa. - 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 executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 104 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 741.0s, OverallIterations: 208, TraceHistogramMax: 2, PathProgramHistogramMax: 175, EmptinessCheckTime: 2.3s, AutomataDifference: 497.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 115497 SdHoareTripleChecker+Valid, 94.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 115497 mSDsluCounter, 509651 SdHoareTripleChecker+Invalid, 79.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 500548 mSDsCounter, 17759 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 248443 IncrementalHoareTripleChecker+Invalid, 266202 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17759 mSolverCounterUnsat, 30851 mSDtfsCounter, 248443 mSolverCounterSat, 1.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 40818 GetRequests, 21217 SyntacticMatches, 674 SemanticMatches, 18927 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 843117 ImplicationChecksByTransitivity, 440.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14625occurred in iteration=158, InterpolantAutomatonStates: 15643, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 31.0s AutomataMinimizationTime, 208 MinimizatonAttempts, 564655 StatesRemovedByMinimization, 206 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 154.7s InterpolantComputationTime, 27058 NumberOfCodeBlocks, 27043 NumberOfCodeBlocksAsserted, 583 NumberOfCheckSat, 38775 ConstructedInterpolants, 0 QuantifiedInterpolants, 230117 SizeOfPredicates, 1782 NumberOfNonLiveVariables, 27624 ConjunctsInSsa, 3490 ConjunctsInUnsatCore, 555 InterpolantComputations, 36 PerfectInterpolantSequences, 236/1926 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