/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/pthread-C-DAC/pthread-demo-datarace-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 14:57:48,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 14:57:48,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 14:57:48,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-01 14:57:48,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-01 14:57:48,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-01 14:57:48,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-01 14:57:48,162 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-01 14:57:48,175 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 14:57:48,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 14:57:48,175 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 14:57:48,175 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 14:57:48,176 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 14:57:48,176 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 14:57:48,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 14:57:48,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 14:57:48,177 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 14:57:48,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 14:57:48,177 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 14:57:48,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 14:57:48,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 14:57:48,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 14:57:48,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 14:57:48,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 14:57:48,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 14:57:48,178 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 14:57:48,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 14:57:48,178 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 14:57:48,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 14:57:48,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 14:57:48,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 14:57:48,178 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 14:57:48,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 14:57:48,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 14:57:48,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 14:57:48,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 14:57:48,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 14:57:48,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 14:57:48,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 14:57:48,179 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 14:57:48,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 14:57:48,180 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 14:57:48,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 14:57:48,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 14:57:48,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 14:57:48,385 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-01 14:57:48,386 INFO L275 PluginConnector]: CDTParser initialized [2022-03-01 14:57:48,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2022-03-01 14:57:48,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ea609065/25c6db9408fb4f8798bc0c179f379cf9/FLAG67f6c75fb [2022-03-01 14:57:48,827 INFO L306 CDTParser]: Found 1 translation units. [2022-03-01 14:57:48,828 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2022-03-01 14:57:48,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ea609065/25c6db9408fb4f8798bc0c179f379cf9/FLAG67f6c75fb [2022-03-01 14:57:49,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ea609065/25c6db9408fb4f8798bc0c179f379cf9 [2022-03-01 14:57:49,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 14:57:49,177 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-01 14:57:49,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-01 14:57:49,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-01 14:57:49,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-01 14:57:49,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 02:57:49" (1/1) ... [2022-03-01 14:57:49,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19981126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:57:49, skipping insertion in model container [2022-03-01 14:57:49,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 02:57:49" (1/1) ... [2022-03-01 14:57:49,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-01 14:57:49,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-01 14:57:49,364 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-03-01 14:57:49,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 14:57:49,599 INFO L203 MainTranslator]: Completed pre-run [2022-03-01 14:57:49,607 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-03-01 14:57:49,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 14:57:49,700 INFO L208 MainTranslator]: Completed translation [2022-03-01 14:57:49,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:57:49 WrapperNode [2022-03-01 14:57:49,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-01 14:57:49,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 14:57:49,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 14:57:49,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 14:57:49,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:57:49" (1/1) ... [2022-03-01 14:57:49,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:57:49" (1/1) ... [2022-03-01 14:57:49,732 INFO L137 Inliner]: procedures = 364, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2022-03-01 14:57:49,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 14:57:49,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 14:57:49,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 14:57:49,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 14:57:49,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:57:49" (1/1) ... [2022-03-01 14:57:49,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:57:49" (1/1) ... [2022-03-01 14:57:49,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:57:49" (1/1) ... [2022-03-01 14:57:49,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:57:49" (1/1) ... [2022-03-01 14:57:49,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:57:49" (1/1) ... [2022-03-01 14:57:49,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:57:49" (1/1) ... [2022-03-01 14:57:49,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:57:49" (1/1) ... [2022-03-01 14:57:49,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 14:57:49,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 14:57:49,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 14:57:49,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 14:57:49,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:57:49" (1/1) ... [2022-03-01 14:57:49,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 14:57:49,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 14:57:49,791 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-01 14:57:49,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-01 14:57:49,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-01 14:57:49,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-01 14:57:49,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-01 14:57:49,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-01 14:57:49,815 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-03-01 14:57:49,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-01 14:57:49,815 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2022-03-01 14:57:49,815 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2022-03-01 14:57:49,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-01 14:57:49,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 14:57:49,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 14:57:49,816 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 14:57:49,886 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 14:57:49,887 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 14:57:50,054 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 14:57:50,060 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 14:57:50,060 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-01 14:57:50,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 02:57:50 BoogieIcfgContainer [2022-03-01 14:57:50,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 14:57:50,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 14:57:50,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 14:57:50,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 14:57:50,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.03 02:57:49" (1/3) ... [2022-03-01 14:57:50,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d2ccd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 02:57:50, skipping insertion in model container [2022-03-01 14:57:50,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:57:49" (2/3) ... [2022-03-01 14:57:50,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d2ccd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 02:57:50, skipping insertion in model container [2022-03-01 14:57:50,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 02:57:50" (3/3) ... [2022-03-01 14:57:50,067 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2022-03-01 14:57:50,070 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 14:57:50,070 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 14:57:50,071 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 14:57:50,071 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 14:57:50,091 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,091 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,091 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,091 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,092 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,092 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,092 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,092 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,092 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,092 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,092 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,092 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,093 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,093 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,093 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,093 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,093 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,094 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,094 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,094 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,094 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,094 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,094 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,094 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,095 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,095 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,095 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,095 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,095 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,095 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,096 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,096 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,096 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,096 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,096 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,096 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,096 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,097 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,097 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,097 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,097 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,097 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,097 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,097 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,098 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,098 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,100 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,100 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,100 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,101 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,101 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,101 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,101 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,101 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,101 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:57:50,104 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-03-01 14:57:50,133 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 14:57:50,139 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-01 14:57:50,139 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-03-01 14:57:50,151 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 94 places, 97 transitions, 202 flow [2022-03-01 14:57:50,197 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 353 states, 352 states have (on average 2.0255681818181817) internal successors, (713), 352 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:50,200 INFO L276 IsEmpty]: Start isEmpty. Operand has 353 states, 352 states have (on average 2.0255681818181817) internal successors, (713), 352 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:50,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-01 14:57:50,211 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:57:50,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 14:57:50,212 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-01 14:57:50,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:57:50,216 INFO L85 PathProgramCache]: Analyzing trace with hash -412203326, now seen corresponding path program 1 times [2022-03-01 14:57:50,223 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:57:50,223 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793450115] [2022-03-01 14:57:50,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:57:50,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:57:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:57:50,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:57:50,424 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:57:50,424 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793450115] [2022-03-01 14:57:50,424 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793450115] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 14:57:50,424 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 14:57:50,425 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-01 14:57:50,426 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214887546] [2022-03-01 14:57:50,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 14:57:50,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-01 14:57:50,429 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:57:50,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-01 14:57:50,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 14:57:50,472 INFO L87 Difference]: Start difference. First operand has 353 states, 352 states have (on average 2.0255681818181817) internal successors, (713), 352 states have internal predecessors, (713), 0 states have call successors, (0), 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 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:50,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:57:50,501 INFO L93 Difference]: Finished difference Result 351 states and 657 transitions. [2022-03-01 14:57:50,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 14:57:50,503 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-03-01 14:57:50,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:57:50,511 INFO L225 Difference]: With dead ends: 351 [2022-03-01 14:57:50,511 INFO L226 Difference]: Without dead ends: 297 [2022-03-01 14:57:50,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 14:57:50,514 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 14:57:50,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 14:57:50,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-03-01 14:57:50,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2022-03-01 14:57:50,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.8547297297297298) internal successors, (549), 296 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:50,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 549 transitions. [2022-03-01 14:57:50,565 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 549 transitions. Word has length 58 [2022-03-01 14:57:50,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:57:50,566 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 549 transitions. [2022-03-01 14:57:50,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:50,566 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 549 transitions. [2022-03-01 14:57:50,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-01 14:57:50,569 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:57:50,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 14:57:50,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 14:57:50,570 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-01 14:57:50,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:57:50,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1088740258, now seen corresponding path program 1 times [2022-03-01 14:57:50,571 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:57:50,571 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750820969] [2022-03-01 14:57:50,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:57:50,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:57:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:57:50,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:57:50,631 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:57:50,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750820969] [2022-03-01 14:57:50,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750820969] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 14:57:50,632 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 14:57:50,632 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 14:57:50,632 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817404290] [2022-03-01 14:57:50,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 14:57:50,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 14:57:50,633 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:57:50,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 14:57:50,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 14:57:50,634 INFO L87 Difference]: Start difference. First operand 297 states and 549 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:50,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:57:50,653 INFO L93 Difference]: Finished difference Result 437 states and 829 transitions. [2022-03-01 14:57:50,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 14:57:50,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-03-01 14:57:50,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:57:50,656 INFO L225 Difference]: With dead ends: 437 [2022-03-01 14:57:50,656 INFO L226 Difference]: Without dead ends: 437 [2022-03-01 14:57:50,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 14:57:50,657 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 23 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 14:57:50,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 156 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 14:57:50,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-03-01 14:57:50,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 311. [2022-03-01 14:57:50,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 1.8612903225806452) internal successors, (577), 310 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:50,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 577 transitions. [2022-03-01 14:57:50,670 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 577 transitions. Word has length 58 [2022-03-01 14:57:50,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:57:50,670 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 577 transitions. [2022-03-01 14:57:50,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:50,670 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 577 transitions. [2022-03-01 14:57:50,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-01 14:57:50,672 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:57:50,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 14:57:50,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 14:57:50,673 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-01 14:57:50,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:57:50,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1826468594, now seen corresponding path program 1 times [2022-03-01 14:57:50,673 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:57:50,674 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251871609] [2022-03-01 14:57:50,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:57:50,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:57:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:57:50,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:57:50,735 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:57:50,735 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251871609] [2022-03-01 14:57:50,735 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251871609] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 14:57:50,735 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 14:57:50,735 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 14:57:50,735 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831979902] [2022-03-01 14:57:50,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 14:57:50,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 14:57:50,736 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:57:50,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 14:57:50,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 14:57:50,737 INFO L87 Difference]: Start difference. First operand 311 states and 577 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:50,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:57:50,754 INFO L93 Difference]: Finished difference Result 444 states and 843 transitions. [2022-03-01 14:57:50,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 14:57:50,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-03-01 14:57:50,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:57:50,757 INFO L225 Difference]: With dead ends: 444 [2022-03-01 14:57:50,757 INFO L226 Difference]: Without dead ends: 444 [2022-03-01 14:57:50,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 14:57:50,760 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 24 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 14:57:50,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 159 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 14:57:50,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-03-01 14:57:50,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 330. [2022-03-01 14:57:50,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 1.8693009118541033) internal successors, (615), 329 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:50,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 615 transitions. [2022-03-01 14:57:50,770 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 615 transitions. Word has length 69 [2022-03-01 14:57:50,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:57:50,770 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 615 transitions. [2022-03-01 14:57:50,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:50,770 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 615 transitions. [2022-03-01 14:57:50,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-01 14:57:50,772 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:57:50,772 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 14:57:50,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-01 14:57:50,773 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-01 14:57:50,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:57:50,773 INFO L85 PathProgramCache]: Analyzing trace with hash 88002593, now seen corresponding path program 1 times [2022-03-01 14:57:50,773 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:57:50,773 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810647267] [2022-03-01 14:57:50,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:57:50,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:57:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:57:50,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:57:50,838 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:57:50,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810647267] [2022-03-01 14:57:50,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810647267] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 14:57:50,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871117464] [2022-03-01 14:57:50,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:57:50,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 14:57:50,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 14:57:50,855 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 14:57:50,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-01 14:57:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:57:50,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-01 14:57:50,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 14:57:51,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:57:51,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 14:57:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:57:51,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871117464] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 14:57:51,391 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 14:57:51,391 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-03-01 14:57:51,391 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268598810] [2022-03-01 14:57:51,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 14:57:51,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 14:57:51,392 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:57:51,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 14:57:51,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-03-01 14:57:51,393 INFO L87 Difference]: Start difference. First operand 330 states and 615 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:51,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:57:51,517 INFO L93 Difference]: Finished difference Result 634 states and 1223 transitions. [2022-03-01 14:57:51,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 14:57:51,517 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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 77 [2022-03-01 14:57:51,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:57:51,519 INFO L225 Difference]: With dead ends: 634 [2022-03-01 14:57:51,519 INFO L226 Difference]: Without dead ends: 634 [2022-03-01 14:57:51,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-03-01 14:57:51,527 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 303 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 14:57:51,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 518 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 14:57:51,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-03-01 14:57:51,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2022-03-01 14:57:51,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 633 states have (on average 1.9320695102685623) internal successors, (1223), 633 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:51,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 1223 transitions. [2022-03-01 14:57:51,559 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 1223 transitions. Word has length 77 [2022-03-01 14:57:51,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:57:51,560 INFO L470 AbstractCegarLoop]: Abstraction has 634 states and 1223 transitions. [2022-03-01 14:57:51,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:51,560 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 1223 transitions. [2022-03-01 14:57:51,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-01 14:57:51,569 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:57:51,569 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 14:57:51,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-01 14:57:51,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 14:57:51,770 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-01 14:57:51,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:57:51,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1150192967, now seen corresponding path program 2 times [2022-03-01 14:57:51,770 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:57:51,771 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772679366] [2022-03-01 14:57:51,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:57:51,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:57:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:57:51,861 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-01 14:57:51,862 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:57:51,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772679366] [2022-03-01 14:57:51,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772679366] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 14:57:51,862 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 14:57:51,862 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 14:57:51,862 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548959704] [2022-03-01 14:57:51,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 14:57:51,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 14:57:51,863 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:57:51,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 14:57:51,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 14:57:51,863 INFO L87 Difference]: Start difference. First operand 634 states and 1223 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:51,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:57:51,882 INFO L93 Difference]: Finished difference Result 580 states and 1088 transitions. [2022-03-01 14:57:51,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 14:57:51,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-03-01 14:57:51,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:57:51,884 INFO L225 Difference]: With dead ends: 580 [2022-03-01 14:57:51,884 INFO L226 Difference]: Without dead ends: 580 [2022-03-01 14:57:51,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 14:57:51,885 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 21 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 14:57:51,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 152 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 14:57:51,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-03-01 14:57:51,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2022-03-01 14:57:51,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 579 states have (on average 1.8791018998272884) internal successors, (1088), 579 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:51,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1088 transitions. [2022-03-01 14:57:51,896 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1088 transitions. Word has length 93 [2022-03-01 14:57:51,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:57:51,898 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 1088 transitions. [2022-03-01 14:57:51,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:51,898 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1088 transitions. [2022-03-01 14:57:51,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-01 14:57:51,902 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:57:51,902 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 14:57:51,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-01 14:57:51,903 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-01 14:57:51,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:57:51,903 INFO L85 PathProgramCache]: Analyzing trace with hash 746770257, now seen corresponding path program 3 times [2022-03-01 14:57:51,903 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:57:51,903 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758729975] [2022-03-01 14:57:51,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:57:51,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:57:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:57:51,989 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-01 14:57:51,989 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:57:51,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758729975] [2022-03-01 14:57:51,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758729975] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 14:57:51,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699514142] [2022-03-01 14:57:51,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 14:57:51,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 14:57:51,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 14:57:51,999 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 14:57:52,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-01 14:57:52,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 14:57:52,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 14:57:52,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-01 14:57:52,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 14:57:52,255 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-01 14:57:52,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 14:57:52,401 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-01 14:57:52,402 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699514142] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 14:57:52,402 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 14:57:52,402 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-03-01 14:57:52,402 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914320518] [2022-03-01 14:57:52,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 14:57:52,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 14:57:52,403 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:57:52,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 14:57:52,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-03-01 14:57:52,403 INFO L87 Difference]: Start difference. First operand 580 states and 1088 transitions. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:52,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:57:52,460 INFO L93 Difference]: Finished difference Result 1154 states and 2182 transitions. [2022-03-01 14:57:52,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 14:57:52,460 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 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 93 [2022-03-01 14:57:52,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:57:52,464 INFO L225 Difference]: With dead ends: 1154 [2022-03-01 14:57:52,464 INFO L226 Difference]: Without dead ends: 1154 [2022-03-01 14:57:52,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-03-01 14:57:52,465 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 171 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 14:57:52,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 572 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 14:57:52,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-03-01 14:57:52,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1154. [2022-03-01 14:57:52,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1153 states have (on average 1.8924544666088465) internal successors, (2182), 1153 states have internal predecessors, (2182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:52,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 2182 transitions. [2022-03-01 14:57:52,484 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 2182 transitions. Word has length 93 [2022-03-01 14:57:52,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:57:52,485 INFO L470 AbstractCegarLoop]: Abstraction has 1154 states and 2182 transitions. [2022-03-01 14:57:52,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:52,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 2182 transitions. [2022-03-01 14:57:52,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-03-01 14:57:52,487 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:57:52,487 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 14:57:52,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-01 14:57:52,704 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,SelfDestructingSolverStorable5 [2022-03-01 14:57:52,704 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-01 14:57:52,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:57:52,705 INFO L85 PathProgramCache]: Analyzing trace with hash -27559221, now seen corresponding path program 4 times [2022-03-01 14:57:52,705 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:57:52,705 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451396862] [2022-03-01 14:57:52,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:57:52,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:57:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:57:52,804 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 11 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:57:52,804 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:57:52,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451396862] [2022-03-01 14:57:52,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451396862] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 14:57:52,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438142880] [2022-03-01 14:57:52,804 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 14:57:52,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 14:57:52,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 14:57:52,806 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 14:57:52,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-01 14:57:52,883 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 14:57:52,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 14:57:52,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 14:57:52,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 14:57:53,084 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 11 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:57:53,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 14:57:53,309 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 11 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:57:53,309 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438142880] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 14:57:53,309 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 14:57:53,309 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-01 14:57:53,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418654498] [2022-03-01 14:57:53,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 14:57:53,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 14:57:53,310 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:57:53,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 14:57:53,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-03-01 14:57:53,311 INFO L87 Difference]: Start difference. First operand 1154 states and 2182 transitions. Second operand has 18 states, 18 states have (on average 10.61111111111111) internal successors, (191), 18 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:53,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:57:53,456 INFO L93 Difference]: Finished difference Result 2302 states and 4370 transitions. [2022-03-01 14:57:53,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 14:57:53,457 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.61111111111111) internal successors, (191), 18 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-03-01 14:57:53,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:57:53,463 INFO L225 Difference]: With dead ends: 2302 [2022-03-01 14:57:53,463 INFO L226 Difference]: Without dead ends: 2302 [2022-03-01 14:57:53,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=280, Invalid=590, Unknown=0, NotChecked=0, Total=870 [2022-03-01 14:57:53,464 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 680 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 14:57:53,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 615 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 14:57:53,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2022-03-01 14:57:53,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 2302. [2022-03-01 14:57:53,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 2301 states have (on average 1.899174272055628) internal successors, (4370), 2301 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:53,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 4370 transitions. [2022-03-01 14:57:53,498 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 4370 transitions. Word has length 115 [2022-03-01 14:57:53,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:57:53,498 INFO L470 AbstractCegarLoop]: Abstraction has 2302 states and 4370 transitions. [2022-03-01 14:57:53,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.61111111111111) internal successors, (191), 18 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:53,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 4370 transitions. [2022-03-01 14:57:53,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-03-01 14:57:53,502 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:57:53,502 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 14:57:53,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-01 14:57:53,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 14:57:53,719 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-01 14:57:53,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:57:53,719 INFO L85 PathProgramCache]: Analyzing trace with hash -617723337, now seen corresponding path program 5 times [2022-03-01 14:57:53,719 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:57:53,719 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839452848] [2022-03-01 14:57:53,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:57:53,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:57:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:57:53,838 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 148 proven. 60 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-03-01 14:57:53,839 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:57:53,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839452848] [2022-03-01 14:57:53,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839452848] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 14:57:53,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744566579] [2022-03-01 14:57:53,839 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 14:57:53,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 14:57:53,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 14:57:53,841 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 14:57:53,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-01 14:57:53,946 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-01 14:57:53,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 14:57:53,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 14:57:53,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 14:57:54,166 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 148 proven. 60 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-03-01 14:57:54,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 14:57:54,419 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 148 proven. 60 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-03-01 14:57:54,420 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744566579] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 14:57:54,420 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 14:57:54,420 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-01 14:57:54,420 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134650386] [2022-03-01 14:57:54,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 14:57:54,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 14:57:54,421 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:57:54,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 14:57:54,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-03-01 14:57:54,422 INFO L87 Difference]: Start difference. First operand 2302 states and 4370 transitions. Second operand has 18 states, 18 states have (on average 11.38888888888889) internal successors, (205), 18 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:54,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:57:54,572 INFO L93 Difference]: Finished difference Result 4518 states and 8550 transitions. [2022-03-01 14:57:54,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 14:57:54,573 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 11.38888888888889) internal successors, (205), 18 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2022-03-01 14:57:54,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:57:54,586 INFO L225 Difference]: With dead ends: 4518 [2022-03-01 14:57:54,586 INFO L226 Difference]: Without dead ends: 4518 [2022-03-01 14:57:54,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=280, Invalid=590, Unknown=0, NotChecked=0, Total=870 [2022-03-01 14:57:54,587 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 810 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 14:57:54,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [810 Valid, 750 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 14:57:54,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4518 states. [2022-03-01 14:57:54,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4518 to 4518. [2022-03-01 14:57:54,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4518 states, 4517 states have (on average 1.8928492362187292) internal successors, (8550), 4517 states have internal predecessors, (8550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:54,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4518 states to 4518 states and 8550 transitions. [2022-03-01 14:57:54,663 INFO L78 Accepts]: Start accepts. Automaton has 4518 states and 8550 transitions. Word has length 159 [2022-03-01 14:57:54,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:57:54,663 INFO L470 AbstractCegarLoop]: Abstraction has 4518 states and 8550 transitions. [2022-03-01 14:57:54,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.38888888888889) internal successors, (205), 18 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:54,663 INFO L276 IsEmpty]: Start isEmpty. Operand 4518 states and 8550 transitions. [2022-03-01 14:57:54,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-03-01 14:57:54,672 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:57:54,672 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 14:57:54,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-01 14:57:54,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 14:57:54,893 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-01 14:57:54,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:57:54,893 INFO L85 PathProgramCache]: Analyzing trace with hash -695670005, now seen corresponding path program 6 times [2022-03-01 14:57:54,894 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:57:54,894 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581338897] [2022-03-01 14:57:54,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:57:54,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:57:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:57:55,058 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 31 proven. 382 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:57:55,059 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:57:55,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581338897] [2022-03-01 14:57:55,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581338897] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 14:57:55,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049692650] [2022-03-01 14:57:55,059 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 14:57:55,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 14:57:55,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 14:57:55,071 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 14:57:55,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-01 14:57:55,233 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-03-01 14:57:55,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 14:57:55,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-01 14:57:55,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 14:57:55,579 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 31 proven. 382 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:57:55,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 14:57:55,994 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 31 proven. 382 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:57:55,995 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049692650] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 14:57:55,995 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 14:57:55,995 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-03-01 14:57:55,995 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533982384] [2022-03-01 14:57:55,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 14:57:55,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 14:57:55,996 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:57:55,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 14:57:55,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 14:57:55,997 INFO L87 Difference]: Start difference. First operand 4518 states and 8550 transitions. Second operand has 34 states, 34 states have (on average 10.088235294117647) internal successors, (343), 34 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:56,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:57:56,494 INFO L93 Difference]: Finished difference Result 9054 states and 17118 transitions. [2022-03-01 14:57:56,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 14:57:56,495 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 10.088235294117647) internal successors, (343), 34 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2022-03-01 14:57:56,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:57:56,524 INFO L225 Difference]: With dead ends: 9054 [2022-03-01 14:57:56,524 INFO L226 Difference]: Without dead ends: 9054 [2022-03-01 14:57:56,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1192, Invalid=2590, Unknown=0, NotChecked=0, Total=3782 [2022-03-01 14:57:56,526 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 1871 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1871 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 14:57:56,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1871 Valid, 1114 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 14:57:56,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9054 states. [2022-03-01 14:57:56,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9054 to 9054. [2022-03-01 14:57:56,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9054 states, 9053 states have (on average 1.8908649066607754) internal successors, (17118), 9053 states have internal predecessors, (17118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:56,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9054 states to 9054 states and 17118 transitions. [2022-03-01 14:57:56,739 INFO L78 Accepts]: Start accepts. Automaton has 9054 states and 17118 transitions. Word has length 191 [2022-03-01 14:57:56,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:57:56,739 INFO L470 AbstractCegarLoop]: Abstraction has 9054 states and 17118 transitions. [2022-03-01 14:57:56,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 10.088235294117647) internal successors, (343), 34 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:56,740 INFO L276 IsEmpty]: Start isEmpty. Operand 9054 states and 17118 transitions. [2022-03-01 14:57:56,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-03-01 14:57:56,758 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:57:56,758 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 14:57:56,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-01 14:57:56,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 14:57:56,975 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-01 14:57:56,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:57:56,976 INFO L85 PathProgramCache]: Analyzing trace with hash 447962103, now seen corresponding path program 7 times [2022-03-01 14:57:56,976 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:57:56,976 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121378400] [2022-03-01 14:57:56,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:57:56,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:57:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:57:57,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 652 proven. 406 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-03-01 14:57:57,188 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:57:57,188 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121378400] [2022-03-01 14:57:57,188 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121378400] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 14:57:57,188 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608630040] [2022-03-01 14:57:57,188 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 14:57:57,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 14:57:57,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 14:57:57,200 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 14:57:57,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-01 14:57:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:57:57,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-01 14:57:57,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 14:57:57,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 652 proven. 406 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-03-01 14:57:57,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 14:57:58,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 652 proven. 406 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-03-01 14:57:58,265 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608630040] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 14:57:58,266 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 14:57:58,266 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-03-01 14:57:58,266 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356887393] [2022-03-01 14:57:58,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 14:57:58,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-01 14:57:58,267 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:57:58,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-01 14:57:58,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-03-01 14:57:58,268 INFO L87 Difference]: Start difference. First operand 9054 states and 17118 transitions. Second operand has 34 states, 34 states have (on average 10.5) internal successors, (357), 34 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:58,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:57:58,823 INFO L93 Difference]: Finished difference Result 17966 states and 33862 transitions. [2022-03-01 14:57:58,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 14:57:58,823 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 10.5) internal successors, (357), 34 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 279 [2022-03-01 14:57:58,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:57:58,864 INFO L225 Difference]: With dead ends: 17966 [2022-03-01 14:57:58,864 INFO L226 Difference]: Without dead ends: 17966 [2022-03-01 14:57:58,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1192, Invalid=2590, Unknown=0, NotChecked=0, Total=3782 [2022-03-01 14:57:58,866 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 2523 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2523 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 14:57:58,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2523 Valid, 1161 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 14:57:58,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17966 states. [2022-03-01 14:57:59,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17966 to 17966. [2022-03-01 14:57:59,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17966 states, 17965 states have (on average 1.8848872808238242) internal successors, (33862), 17965 states have internal predecessors, (33862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:59,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17966 states to 17966 states and 33862 transitions. [2022-03-01 14:57:59,218 INFO L78 Accepts]: Start accepts. Automaton has 17966 states and 33862 transitions. Word has length 279 [2022-03-01 14:57:59,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:57:59,219 INFO L470 AbstractCegarLoop]: Abstraction has 17966 states and 33862 transitions. [2022-03-01 14:57:59,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 10.5) internal successors, (357), 34 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:57:59,220 INFO L276 IsEmpty]: Start isEmpty. Operand 17966 states and 33862 transitions. [2022-03-01 14:57:59,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2022-03-01 14:57:59,255 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:57:59,255 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 14:57:59,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-03-01 14:57:59,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 14:57:59,500 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-01 14:57:59,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:57:59,524 INFO L85 PathProgramCache]: Analyzing trace with hash 970632075, now seen corresponding path program 8 times [2022-03-01 14:57:59,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:57:59,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461634858] [2022-03-01 14:57:59,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:57:59,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:57:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:57:59,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 71 proven. 1954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:57:59,970 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:57:59,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461634858] [2022-03-01 14:57:59,971 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461634858] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 14:57:59,971 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382128236] [2022-03-01 14:57:59,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 14:57:59,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 14:57:59,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 14:57:59,980 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 14:58:00,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-01 14:58:00,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 14:58:00,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 14:58:00,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 32 conjunts are in the unsatisfiable core [2022-03-01 14:58:00,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 14:58:01,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 57 proven. 1968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:58:01,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 14:58:02,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 57 proven. 1968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:58:02,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382128236] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 14:58:02,004 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 14:58:02,004 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 72 [2022-03-01 14:58:02,004 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187830943] [2022-03-01 14:58:02,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 14:58:02,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-03-01 14:58:02,005 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:58:02,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-03-01 14:58:02,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=727, Invalid=4385, Unknown=0, NotChecked=0, Total=5112 [2022-03-01 14:58:02,008 INFO L87 Difference]: Start difference. First operand 17966 states and 33862 transitions. Second operand has 72 states, 72 states have (on average 9.972222222222221) internal successors, (718), 72 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:03:27,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:03:27,253 INFO L93 Difference]: Finished difference Result 26156 states and 49207 transitions. [2022-03-01 15:03:27,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2774 states. [2022-03-01 15:03:27,254 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 9.972222222222221) internal successors, (718), 72 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 343 [2022-03-01 15:03:27,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:03:27,298 INFO L225 Difference]: With dead ends: 26156 [2022-03-01 15:03:27,298 INFO L226 Difference]: Without dead ends: 26156 [2022-03-01 15:03:28,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4449 GetRequests, 1642 SyntacticMatches, 1 SemanticMatches, 2806 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4086993 ImplicationChecksByTransitivity, 300.0s TimeCoverageRelationStatistics Valid=1304691, Invalid=6577365, Unknown=0, NotChecked=0, Total=7882056 [2022-03-01 15:03:28,241 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 49604 mSDsluCounter, 2693 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 4948 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49604 SdHoareTripleChecker+Valid, 2794 SdHoareTripleChecker+Invalid, 5855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 4948 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:03:28,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49604 Valid, 2794 Invalid, 5855 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [4948 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-03-01 15:03:28,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26156 states. [2022-03-01 15:03:28,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26156 to 25013. [2022-03-01 15:03:28,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25013 states, 25012 states have (on average 1.8831360946745561) internal successors, (47101), 25012 states have internal predecessors, (47101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:03:28,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25013 states to 25013 states and 47101 transitions. [2022-03-01 15:03:28,630 INFO L78 Accepts]: Start accepts. Automaton has 25013 states and 47101 transitions. Word has length 343 [2022-03-01 15:03:28,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:03:28,631 INFO L470 AbstractCegarLoop]: Abstraction has 25013 states and 47101 transitions. [2022-03-01 15:03:28,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 9.972222222222221) internal successors, (718), 72 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:03:28,631 INFO L276 IsEmpty]: Start isEmpty. Operand 25013 states and 47101 transitions. [2022-03-01 15:03:28,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2022-03-01 15:03:28,680 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:03:28,681 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:03:28,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-03-01 15:03:28,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:03:28,913 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-01 15:03:28,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:03:28,913 INFO L85 PathProgramCache]: Analyzing trace with hash -453903054, now seen corresponding path program 9 times [2022-03-01 15:03:28,913 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:03:28,914 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317503733] [2022-03-01 15:03:28,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:03:28,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:03:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:03:29,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2876 backedges. 572 proven. 2236 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-03-01 15:03:29,691 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:03:29,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317503733] [2022-03-01 15:03:29,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317503733] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:03:29,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831926625] [2022-03-01 15:03:29,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:03:29,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:03:29,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:03:29,692 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:03:29,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-01 15:03:30,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2022-03-01 15:03:30,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:03:30,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 34 conjunts are in the unsatisfiable core [2022-03-01 15:03:30,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:03:30,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2876 backedges. 572 proven. 2236 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-03-01 15:03:30,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:03:31,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2876 backedges. 572 proven. 2236 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-03-01 15:03:31,285 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831926625] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:03:31,285 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:03:31,285 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 43 [2022-03-01 15:03:31,285 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755869441] [2022-03-01 15:03:31,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:03:31,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-01 15:03:31,286 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:03:31,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-01 15:03:31,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 15:03:31,287 INFO L87 Difference]: Start difference. First operand 25013 states and 47101 transitions. Second operand has 43 states, 43 states have (on average 10.372093023255815) internal successors, (446), 43 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:03:32,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:03:32,208 INFO L93 Difference]: Finished difference Result 30921 states and 58197 transitions. [2022-03-01 15:03:32,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-01 15:03:32,209 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 10.372093023255815) internal successors, (446), 43 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 394 [2022-03-01 15:03:32,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:03:32,258 INFO L225 Difference]: With dead ends: 30921 [2022-03-01 15:03:32,258 INFO L226 Difference]: Without dead ends: 30921 [2022-03-01 15:03:32,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 859 GetRequests, 779 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1261 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2022-03-01 15:03:32,259 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 2562 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2562 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:03:32,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2562 Valid, 1369 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:03:32,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30921 states. [2022-03-01 15:03:32,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30921 to 30921. [2022-03-01 15:03:32,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30921 states, 30920 states have (on average 1.8821798188874515) internal successors, (58197), 30920 states have internal predecessors, (58197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:03:32,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30921 states to 30921 states and 58197 transitions. [2022-03-01 15:03:32,667 INFO L78 Accepts]: Start accepts. Automaton has 30921 states and 58197 transitions. Word has length 394 [2022-03-01 15:03:32,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:03:32,668 INFO L470 AbstractCegarLoop]: Abstraction has 30921 states and 58197 transitions. [2022-03-01 15:03:32,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 10.372093023255815) internal successors, (446), 43 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:03:32,668 INFO L276 IsEmpty]: Start isEmpty. Operand 30921 states and 58197 transitions. [2022-03-01 15:03:32,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-03-01 15:03:32,717 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:03:32,717 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:03:32,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-01 15:03:32,936 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,SelfDestructingSolverStorable11 [2022-03-01 15:03:32,936 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-01 15:03:32,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:03:32,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1784322982, now seen corresponding path program 10 times [2022-03-01 15:03:32,937 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:03:32,937 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577860224] [2022-03-01 15:03:32,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:03:32,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:03:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:03:35,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:03:35,681 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:03:35,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577860224] [2022-03-01 15:03:35,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577860224] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:03:35,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076977994] [2022-03-01 15:03:35,681 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:03:35,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:03:35,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:03:35,688 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:03:35,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-01 15:03:35,954 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:03:35,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:03:35,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 165 conjunts are in the unsatisfiable core [2022-03-01 15:03:35,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:03:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:03:37,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:03:38,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:03:38,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076977994] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:03:38,671 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:03:38,671 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 87 [2022-03-01 15:03:38,672 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134516334] [2022-03-01 15:03:38,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:03:38,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-03-01 15:03:38,673 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:03:38,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-03-01 15:03:38,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=7309, Unknown=0, NotChecked=0, Total=7482 [2022-03-01 15:03:38,674 INFO L87 Difference]: Start difference. First operand 30921 states and 58197 transitions. Second operand has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:04:35,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:04:35,577 INFO L93 Difference]: Finished difference Result 764550 states and 1465032 transitions. [2022-03-01 15:04:35,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 981 states. [2022-03-01 15:04:35,577 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 438 [2022-03-01 15:04:35,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:04:37,663 INFO L225 Difference]: With dead ends: 764550 [2022-03-01 15:04:37,663 INFO L226 Difference]: Without dead ends: 764290 [2022-03-01 15:04:37,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1858 GetRequests, 868 SyntacticMatches, 6 SemanticMatches, 984 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405331 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=3949, Invalid=967261, Unknown=0, NotChecked=0, Total=971210 [2022-03-01 15:04:37,727 INFO L933 BasicCegarLoop]: 13882 mSDtfsCounter, 16494 mSDsluCounter, 1124995 mSDsCounter, 0 mSdLazyCounter, 154652 mSolverCounterSat, 977 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16494 SdHoareTripleChecker+Valid, 1137193 SdHoareTripleChecker+Invalid, 155629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.9s SdHoareTripleChecker+Time, 977 IncrementalHoareTripleChecker+Valid, 154652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.8s IncrementalHoareTripleChecker+Time [2022-03-01 15:04:37,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16494 Valid, 1137193 Invalid, 155629 Unknown, 0 Unchecked, 0.9s Time], IncrementalHoareTripleChecker [977 Valid, 154652 Invalid, 0 Unknown, 0 Unchecked, 29.8s Time] [2022-03-01 15:04:38,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764290 states. [2022-03-01 15:04:42,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764290 to 32595. [2022-03-01 15:04:42,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32595 states, 32594 states have (on average 1.8841197766460085) internal successors, (61411), 32594 states have internal predecessors, (61411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:04:43,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32595 states to 32595 states and 61411 transitions. [2022-03-01 15:04:43,186 INFO L78 Accepts]: Start accepts. Automaton has 32595 states and 61411 transitions. Word has length 438 [2022-03-01 15:04:43,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:04:43,188 INFO L470 AbstractCegarLoop]: Abstraction has 32595 states and 61411 transitions. [2022-03-01 15:04:43,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:04:43,188 INFO L276 IsEmpty]: Start isEmpty. Operand 32595 states and 61411 transitions. [2022-03-01 15:04:43,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-03-01 15:04:43,227 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:04:43,227 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:04:43,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-01 15:04:43,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-01 15:04:43,445 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-01 15:04:43,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:04:43,446 INFO L85 PathProgramCache]: Analyzing trace with hash -2051785962, now seen corresponding path program 11 times [2022-03-01 15:04:43,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:04:43,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633586102] [2022-03-01 15:04:43,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:04:43,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:04:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:04:46,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:04:46,584 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:04:46,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633586102] [2022-03-01 15:04:46,584 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633586102] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:04:46,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315380251] [2022-03-01 15:04:46,585 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:04:46,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:04:46,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:04:46,586 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:04:46,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-01 15:04:46,922 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-03-01 15:04:46,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:04:46,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 165 conjunts are in the unsatisfiable core [2022-03-01 15:04:46,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:04:48,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:04:48,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:04:49,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:04:49,353 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315380251] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:04:49,353 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:04:49,353 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 87 [2022-03-01 15:04:49,353 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262660465] [2022-03-01 15:04:49,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:04:49,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-03-01 15:04:49,354 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:04:49,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-03-01 15:04:49,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=7309, Unknown=0, NotChecked=0, Total=7482 [2022-03-01 15:04:49,356 INFO L87 Difference]: Start difference. First operand 32595 states and 61411 transitions. Second operand has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:05:49,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:05:49,120 INFO L93 Difference]: Finished difference Result 746382 states and 1431433 transitions. [2022-03-01 15:05:49,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 938 states. [2022-03-01 15:05:49,120 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 438 [2022-03-01 15:05:49,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:05:51,554 INFO L225 Difference]: With dead ends: 746382 [2022-03-01 15:05:51,554 INFO L226 Difference]: Without dead ends: 746369 [2022-03-01 15:05:51,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1816 GetRequests, 868 SyntacticMatches, 6 SemanticMatches, 942 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368506 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=3610, Invalid=886582, Unknown=0, NotChecked=0, Total=890192 [2022-03-01 15:05:51,599 INFO L933 BasicCegarLoop]: 13826 mSDtfsCounter, 16117 mSDsluCounter, 1147131 mSDsCounter, 0 mSdLazyCounter, 155287 mSolverCounterSat, 970 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16117 SdHoareTripleChecker+Valid, 1159315 SdHoareTripleChecker+Invalid, 156257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.7s SdHoareTripleChecker+Time, 970 IncrementalHoareTripleChecker+Valid, 155287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:05:51,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16117 Valid, 1159315 Invalid, 156257 Unknown, 0 Unchecked, 0.7s Time], IncrementalHoareTripleChecker [970 Valid, 155287 Invalid, 0 Unknown, 0 Unchecked, 31.4s Time] [2022-03-01 15:05:52,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746369 states. [2022-03-01 15:05:57,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746369 to 32679. [2022-03-01 15:05:57,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32679 states, 32678 states have (on average 1.8846624640430871) internal successors, (61587), 32678 states have internal predecessors, (61587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:05:57,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32679 states to 32679 states and 61587 transitions. [2022-03-01 15:05:57,184 INFO L78 Accepts]: Start accepts. Automaton has 32679 states and 61587 transitions. Word has length 438 [2022-03-01 15:05:57,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:05:57,185 INFO L470 AbstractCegarLoop]: Abstraction has 32679 states and 61587 transitions. [2022-03-01 15:05:57,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:05:57,185 INFO L276 IsEmpty]: Start isEmpty. Operand 32679 states and 61587 transitions. [2022-03-01 15:05:57,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-03-01 15:05:57,221 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:05:57,222 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:05:57,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-01 15:05:57,440 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,SelfDestructingSolverStorable13 [2022-03-01 15:05:57,440 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-01 15:05:57,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:05:57,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1995053348, now seen corresponding path program 12 times [2022-03-01 15:05:57,441 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:05:57,441 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700194051] [2022-03-01 15:05:57,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:05:57,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:05:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:06:00,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:06:00,381 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:06:00,381 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700194051] [2022-03-01 15:06:00,381 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700194051] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:06:00,381 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965652232] [2022-03-01 15:06:00,381 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:06:00,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:06:00,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:06:00,382 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:06:00,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-01 15:06:00,808 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2022-03-01 15:06:00,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:06:00,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 165 conjunts are in the unsatisfiable core [2022-03-01 15:06:00,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:06:01,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:06:01,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:06:03,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:06:03,044 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965652232] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:06:03,044 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:06:03,044 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 87 [2022-03-01 15:06:03,044 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677894951] [2022-03-01 15:06:03,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:06:03,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-03-01 15:06:03,045 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:06:03,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-03-01 15:06:03,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=7309, Unknown=0, NotChecked=0, Total=7482 [2022-03-01 15:06:03,046 INFO L87 Difference]: Start difference. First operand 32679 states and 61587 transitions. Second operand has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:06:59,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:06:59,375 INFO L93 Difference]: Finished difference Result 736738 states and 1412969 transitions. [2022-03-01 15:06:59,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 934 states. [2022-03-01 15:06:59,376 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 438 [2022-03-01 15:06:59,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:07:01,502 INFO L225 Difference]: With dead ends: 736738 [2022-03-01 15:07:01,502 INFO L226 Difference]: Without dead ends: 736725 [2022-03-01 15:07:01,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1812 GetRequests, 868 SyntacticMatches, 6 SemanticMatches, 938 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365080 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=3594, Invalid=879066, Unknown=0, NotChecked=0, Total=882660 [2022-03-01 15:07:01,544 INFO L933 BasicCegarLoop]: 13738 mSDtfsCounter, 15993 mSDsluCounter, 1126105 mSDsCounter, 0 mSdLazyCounter, 152771 mSolverCounterSat, 966 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15993 SdHoareTripleChecker+Valid, 1138221 SdHoareTripleChecker+Invalid, 153737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.0s SdHoareTripleChecker+Time, 966 IncrementalHoareTripleChecker+Valid, 152771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:07:01,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15993 Valid, 1138221 Invalid, 153737 Unknown, 0 Unchecked, 1.0s Time], IncrementalHoareTripleChecker [966 Valid, 152771 Invalid, 0 Unknown, 0 Unchecked, 29.5s Time] [2022-03-01 15:07:02,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736725 states. [2022-03-01 15:07:08,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736725 to 32917. [2022-03-01 15:07:08,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32917 states, 32916 states have (on average 1.8857090776522056) internal successors, (62070), 32916 states have internal predecessors, (62070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:07:08,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32917 states to 32917 states and 62070 transitions. [2022-03-01 15:07:08,246 INFO L78 Accepts]: Start accepts. Automaton has 32917 states and 62070 transitions. Word has length 438 [2022-03-01 15:07:08,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:07:08,247 INFO L470 AbstractCegarLoop]: Abstraction has 32917 states and 62070 transitions. [2022-03-01 15:07:08,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:07:08,247 INFO L276 IsEmpty]: Start isEmpty. Operand 32917 states and 62070 transitions. [2022-03-01 15:07:08,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-03-01 15:07:08,287 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:07:08,287 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:07:08,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-01 15:07:08,506 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,SelfDestructingSolverStorable14 [2022-03-01 15:07:08,507 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-01 15:07:08,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:07:08,513 INFO L85 PathProgramCache]: Analyzing trace with hash 561129814, now seen corresponding path program 13 times [2022-03-01 15:07:08,514 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:07:08,514 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923784043] [2022-03-01 15:07:08,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:07:08,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:07:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:07:11,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:07:11,578 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:07:11,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923784043] [2022-03-01 15:07:11,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923784043] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:07:11,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332536564] [2022-03-01 15:07:11,578 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:07:11,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:07:11,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:07:11,581 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:07:11,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-01 15:07:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:07:11,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 165 conjunts are in the unsatisfiable core [2022-03-01 15:07:11,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:07:13,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:07:13,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:07:14,801 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:07:14,802 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332536564] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:07:14,802 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:07:14,802 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 87 [2022-03-01 15:07:14,802 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658804439] [2022-03-01 15:07:14,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:07:14,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-03-01 15:07:14,803 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:07:14,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-03-01 15:07:14,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=7309, Unknown=0, NotChecked=0, Total=7482 [2022-03-01 15:07:14,804 INFO L87 Difference]: Start difference. First operand 32917 states and 62070 transitions. Second operand has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:08:15,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:08:15,137 INFO L93 Difference]: Finished difference Result 728152 states and 1396666 transitions. [2022-03-01 15:08:15,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 930 states. [2022-03-01 15:08:15,137 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 438 [2022-03-01 15:08:15,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:08:17,588 INFO L225 Difference]: With dead ends: 728152 [2022-03-01 15:08:17,588 INFO L226 Difference]: Without dead ends: 728139 [2022-03-01 15:08:17,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1808 GetRequests, 868 SyntacticMatches, 6 SemanticMatches, 934 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361670 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=3578, Invalid=871582, Unknown=0, NotChecked=0, Total=875160 [2022-03-01 15:08:17,633 INFO L933 BasicCegarLoop]: 13650 mSDtfsCounter, 15871 mSDsluCounter, 1105276 mSDsCounter, 0 mSdLazyCounter, 150251 mSolverCounterSat, 962 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15871 SdHoareTripleChecker+Valid, 1117324 SdHoareTripleChecker+Invalid, 151213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.7s SdHoareTripleChecker+Time, 962 IncrementalHoareTripleChecker+Valid, 150251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.7s IncrementalHoareTripleChecker+Time [2022-03-01 15:08:17,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15871 Valid, 1117324 Invalid, 151213 Unknown, 0 Unchecked, 0.7s Time], IncrementalHoareTripleChecker [962 Valid, 150251 Invalid, 0 Unknown, 0 Unchecked, 32.7s Time] [2022-03-01 15:08:18,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728139 states. [2022-03-01 15:08:22,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728139 to 33320. [2022-03-01 15:08:22,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33320 states, 33319 states have (on average 1.8867613073621656) internal successors, (62865), 33319 states have internal predecessors, (62865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:08:22,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33320 states to 33320 states and 62865 transitions. [2022-03-01 15:08:22,834 INFO L78 Accepts]: Start accepts. Automaton has 33320 states and 62865 transitions. Word has length 438 [2022-03-01 15:08:22,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:08:22,855 INFO L470 AbstractCegarLoop]: Abstraction has 33320 states and 62865 transitions. [2022-03-01 15:08:22,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:08:22,855 INFO L276 IsEmpty]: Start isEmpty. Operand 33320 states and 62865 transitions. [2022-03-01 15:08:22,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-03-01 15:08:22,932 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:08:22,932 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:08:22,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-01 15:08:23,133 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,SelfDestructingSolverStorable15 [2022-03-01 15:08:23,133 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-01 15:08:23,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:08:23,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1342517092, now seen corresponding path program 14 times [2022-03-01 15:08:23,134 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:08:23,134 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434808103] [2022-03-01 15:08:23,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:08:23,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:08:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:08:25,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:08:25,956 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:08:25,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434808103] [2022-03-01 15:08:25,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434808103] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:08:25,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296366501] [2022-03-01 15:08:25,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:08:25,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:08:25,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:08:25,957 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:08:25,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-01 15:08:26,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:08:26,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:08:26,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 165 conjunts are in the unsatisfiable core [2022-03-01 15:08:26,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:08:27,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:08:27,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:08:28,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:08:28,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296366501] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:08:28,497 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:08:28,497 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 87 [2022-03-01 15:08:28,497 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095320808] [2022-03-01 15:08:28,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:08:28,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-03-01 15:08:28,498 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:08:28,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-03-01 15:08:28,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=7309, Unknown=0, NotChecked=0, Total=7482 [2022-03-01 15:08:28,500 INFO L87 Difference]: Start difference. First operand 33320 states and 62865 transitions. Second operand has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:09:24,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:09:24,826 INFO L93 Difference]: Finished difference Result 720961 states and 1383050 transitions. [2022-03-01 15:09:24,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 926 states. [2022-03-01 15:09:24,828 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 438 [2022-03-01 15:09:24,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:09:26,773 INFO L225 Difference]: With dead ends: 720961 [2022-03-01 15:09:26,773 INFO L226 Difference]: Without dead ends: 720948 [2022-03-01 15:09:26,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1804 GetRequests, 868 SyntacticMatches, 6 SemanticMatches, 930 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358276 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=3562, Invalid=864130, Unknown=0, NotChecked=0, Total=867692 [2022-03-01 15:09:26,815 INFO L933 BasicCegarLoop]: 13562 mSDtfsCounter, 15749 mSDsluCounter, 1098148 mSDsCounter, 0 mSdLazyCounter, 149593 mSolverCounterSat, 958 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15749 SdHoareTripleChecker+Valid, 1110108 SdHoareTripleChecker+Invalid, 150551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.0s SdHoareTripleChecker+Time, 958 IncrementalHoareTripleChecker+Valid, 149593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.6s IncrementalHoareTripleChecker+Time [2022-03-01 15:09:26,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15749 Valid, 1110108 Invalid, 150551 Unknown, 0 Unchecked, 1.0s Time], IncrementalHoareTripleChecker [958 Valid, 149593 Invalid, 0 Unknown, 0 Unchecked, 29.6s Time] [2022-03-01 15:09:27,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720948 states. [2022-03-01 15:09:32,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720948 to 33888. [2022-03-01 15:09:32,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33888 states, 33887 states have (on average 1.887803582494762) internal successors, (63972), 33887 states have internal predecessors, (63972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:09:32,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33888 states to 33888 states and 63972 transitions. [2022-03-01 15:09:32,130 INFO L78 Accepts]: Start accepts. Automaton has 33888 states and 63972 transitions. Word has length 438 [2022-03-01 15:09:32,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:09:32,130 INFO L470 AbstractCegarLoop]: Abstraction has 33888 states and 63972 transitions. [2022-03-01 15:09:32,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:09:32,130 INFO L276 IsEmpty]: Start isEmpty. Operand 33888 states and 63972 transitions. [2022-03-01 15:09:32,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-03-01 15:09:32,170 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:09:32,170 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:09:32,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-03-01 15:09:32,383 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,SelfDestructingSolverStorable16 [2022-03-01 15:09:32,383 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-01 15:09:32,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:09:32,384 INFO L85 PathProgramCache]: Analyzing trace with hash 764110742, now seen corresponding path program 15 times [2022-03-01 15:09:32,384 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:09:32,384 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760060498] [2022-03-01 15:09:32,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:09:32,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:09:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:09:34,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:09:34,604 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:09:34,604 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760060498] [2022-03-01 15:09:34,604 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760060498] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:09:34,604 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333662905] [2022-03-01 15:09:34,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:09:34,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:09:34,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:09:34,606 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:09:34,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-01 15:09:35,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2022-03-01 15:09:35,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:09:35,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 165 conjunts are in the unsatisfiable core [2022-03-01 15:09:35,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:09:36,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:09:36,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:09:38,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:09:38,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333662905] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:09:38,104 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:09:38,104 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 87 [2022-03-01 15:09:38,104 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747851034] [2022-03-01 15:09:38,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:09:38,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-03-01 15:09:38,105 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:09:38,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-03-01 15:09:38,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=7309, Unknown=0, NotChecked=0, Total=7482 [2022-03-01 15:09:38,106 INFO L87 Difference]: Start difference. First operand 33888 states and 63972 transitions. Second operand has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:10:37,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:10:37,911 INFO L93 Difference]: Finished difference Result 715179 states and 1372131 transitions. [2022-03-01 15:10:37,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 922 states. [2022-03-01 15:10:37,912 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 438 [2022-03-01 15:10:37,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:10:40,880 INFO L225 Difference]: With dead ends: 715179 [2022-03-01 15:10:40,880 INFO L226 Difference]: Without dead ends: 715166 [2022-03-01 15:10:40,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1800 GetRequests, 868 SyntacticMatches, 6 SemanticMatches, 926 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354898 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=3546, Invalid=856710, Unknown=0, NotChecked=0, Total=860256 [2022-03-01 15:10:40,932 INFO L933 BasicCegarLoop]: 13474 mSDtfsCounter, 15627 mSDsluCounter, 1104457 mSDsCounter, 0 mSdLazyCounter, 150773 mSolverCounterSat, 954 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15627 SdHoareTripleChecker+Valid, 1116309 SdHoareTripleChecker+Invalid, 151727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.8s SdHoareTripleChecker+Time, 954 IncrementalHoareTripleChecker+Valid, 150773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2022-03-01 15:10:40,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15627 Valid, 1116309 Invalid, 151727 Unknown, 0 Unchecked, 0.8s Time], IncrementalHoareTripleChecker [954 Valid, 150773 Invalid, 0 Unknown, 0 Unchecked, 30.9s Time] [2022-03-01 15:10:41,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715166 states. [2022-03-01 15:10:46,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715166 to 34621. [2022-03-01 15:10:46,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34621 states, 34620 states have (on average 1.8888214904679377) internal successors, (65391), 34620 states have internal predecessors, (65391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:10:46,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34621 states to 34621 states and 65391 transitions. [2022-03-01 15:10:46,872 INFO L78 Accepts]: Start accepts. Automaton has 34621 states and 65391 transitions. Word has length 438 [2022-03-01 15:10:46,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:10:46,872 INFO L470 AbstractCegarLoop]: Abstraction has 34621 states and 65391 transitions. [2022-03-01 15:10:46,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:10:46,872 INFO L276 IsEmpty]: Start isEmpty. Operand 34621 states and 65391 transitions. [2022-03-01 15:10:46,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-03-01 15:10:46,923 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:10:46,923 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:10:46,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-01 15:10:47,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:10:47,139 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-01 15:10:47,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:10:47,139 INFO L85 PathProgramCache]: Analyzing trace with hash 765618780, now seen corresponding path program 16 times [2022-03-01 15:10:47,139 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:10:47,139 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875920986] [2022-03-01 15:10:47,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:10:47,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:10:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:10:50,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:10:50,130 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:10:50,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875920986] [2022-03-01 15:10:50,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875920986] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:10:50,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721347743] [2022-03-01 15:10:50,131 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:10:50,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:10:50,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:10:50,142 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:10:50,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-01 15:10:50,477 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:10:50,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:10:50,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 165 conjunts are in the unsatisfiable core [2022-03-01 15:10:50,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:10:52,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:10:52,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:10:53,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:10:53,470 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721347743] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:10:53,470 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:10:53,470 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 87 [2022-03-01 15:10:53,470 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722297686] [2022-03-01 15:10:53,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:10:53,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-03-01 15:10:53,471 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:10:53,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-03-01 15:10:53,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=7309, Unknown=0, NotChecked=0, Total=7482 [2022-03-01 15:10:53,472 INFO L87 Difference]: Start difference. First operand 34621 states and 65391 transitions. Second operand has 87 states, 87 states have (on average 5.080459770114943) internal successors, (442), 87 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-03-01 15:10:57,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-03-01 15:10:57,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 868 SyntacticMatches, 6 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2017 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=421, Invalid=21631, Unknown=0, NotChecked=0, Total=22052 [2022-03-01 15:10:57,408 INFO L933 BasicCegarLoop]: 871 mSDtfsCounter, 907 mSDsluCounter, 71139 mSDsCounter, 0 mSdLazyCounter, 10906 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 71967 SdHoareTripleChecker+Invalid, 10987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 10906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:10:57,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 71967 Invalid, 10987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 10906 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-01 15:10:57,409 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-03-01 15:10:57,412 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-01 15:10:57,415 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-01 15:10:57,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-01 15:10:57,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:10:57,630 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (34621states) and FLOYD_HOARE automaton (currently 75 states, 87 states before enhancement),while ReachableStatesComputation was computing reachable states (7250 states constructed, input type IntersectNwa). [2022-03-01 15:10:57,631 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-03-01 15:10:57,633 INFO L732 BasicCegarLoop]: Path program histogram: [16, 1, 1, 1] [2022-03-01 15:10:57,635 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-01 15:10:57,635 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-01 15:10:57,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.03 03:10:57 BasicIcfg [2022-03-01 15:10:57,636 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-01 15:10:57,637 INFO L158 Benchmark]: Toolchain (without parser) took 788459.66ms. Allocated memory was 238.0MB in the beginning and 7.9GB in the end (delta: 7.7GB). Free memory was 209.0MB in the beginning and 7.5GB in the end (delta: -7.3GB). Peak memory consumption was 365.9MB. Max. memory is 8.0GB. [2022-03-01 15:10:57,637 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 238.0MB. Free memory was 198.9MB in the beginning and 198.8MB in the end (delta: 73.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 15:10:57,637 INFO L158 Benchmark]: CACSL2BoogieTranslator took 523.13ms. Allocated memory is still 238.0MB. Free memory was 208.8MB in the beginning and 185.6MB in the end (delta: 23.2MB). Peak memory consumption was 25.6MB. Max. memory is 8.0GB. [2022-03-01 15:10:57,637 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.50ms. Allocated memory is still 238.0MB. Free memory was 185.6MB in the beginning and 183.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-01 15:10:57,637 INFO L158 Benchmark]: Boogie Preprocessor took 19.09ms. Allocated memory is still 238.0MB. Free memory was 183.0MB in the beginning and 181.7MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 15:10:57,638 INFO L158 Benchmark]: RCFGBuilder took 296.27ms. Allocated memory is still 238.0MB. Free memory was 181.7MB in the beginning and 169.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-01 15:10:57,638 INFO L158 Benchmark]: TraceAbstraction took 787573.89ms. Allocated memory was 238.0MB in the beginning and 7.9GB in the end (delta: 7.7GB). Free memory was 168.6MB in the beginning and 7.5GB in the end (delta: -7.3GB). Peak memory consumption was 326.6MB. Max. memory is 8.0GB. [2022-03-01 15:10:57,639 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 238.0MB. Free memory was 198.9MB in the beginning and 198.8MB in the end (delta: 73.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 523.13ms. Allocated memory is still 238.0MB. Free memory was 208.8MB in the beginning and 185.6MB in the end (delta: 23.2MB). Peak memory consumption was 25.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.50ms. Allocated memory is still 238.0MB. Free memory was 185.6MB in the beginning and 183.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.09ms. Allocated memory is still 238.0MB. Free memory was 183.0MB in the beginning and 181.7MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 296.27ms. Allocated memory is still 238.0MB. Free memory was 181.7MB in the beginning and 169.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 787573.89ms. Allocated memory was 238.0MB in the beginning and 7.9GB in the end (delta: 7.7GB). Free memory was 168.6MB in the beginning and 7.5GB in the end (delta: -7.3GB). Peak memory consumption was 326.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (34621states) and FLOYD_HOARE automaton (currently 75 states, 87 states before enhancement),while ReachableStatesComputation was computing reachable states (7250 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 1343]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (34621states) and FLOYD_HOARE automaton (currently 75 states, 87 states before enhancement),while ReachableStatesComputation was computing reachable states (7250 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 110 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 787.5s, OverallIterations: 19, TraceHistogramMax: 20, PathProgramHistogramMax: 16, EmptinessCheckTime: 0.5s, AutomataDifference: 696.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 155350 SdHoareTripleChecker+Valid, 189.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 155350 mSDsluCounter, 6859875 SdHoareTripleChecker+Invalid, 159.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6785573 mSDsCounter, 11016 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 925727 IncrementalHoareTripleChecker+Invalid, 936743 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11016 mSolverCounterUnsat, 84198 mSDtfsCounter, 925727 mSolverCounterSat, 5.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19248 GetRequests, 10315 SyntacticMatches, 44 SemanticMatches, 8889 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6306070 ImplicationChecksByTransitivity, 447.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34621occurred in iteration=18, InterpolantAutomatonStates: 8626, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 35.8s AutomataMinimizationTime, 18 MinimizatonAttempts, 4213000 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 46.1s InterpolantComputationTime, 9712 NumberOfCodeBlocks, 9616 NumberOfCodeBlocksAsserted, 126 NumberOfCheckSat, 14380 ConstructedInterpolants, 0 QuantifiedInterpolants, 69739 SizeOfPredicates, 400 NumberOfNonLiveVariables, 11363 ConjunctsInSsa, 1277 ConjunctsInUnsatCore, 49 InterpolantComputations, 4 PerfectInterpolantSequences, 5776/97730 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