/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf -i ../../../trunk/examples/svcomp/pthread/indexer.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 01:14:05,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 01:14:05,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 01:14:05,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 01:14:05,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 01:14:05,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 01:14:05,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 01:14:05,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 01:14:05,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 01:14:05,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 01:14:05,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 01:14:05,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 01:14:05,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 01:14:05,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 01:14:05,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 01:14:05,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 01:14:05,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 01:14:05,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 01:14:05,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 01:14:05,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 01:14:05,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 01:14:05,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 01:14:05,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 01:14:05,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 01:14:05,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-22 01:14:05,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-22 01:14:05,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-22 01:14:05,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-22 01:14:05,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-22 01:14:05,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-22 01:14:05,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 01:14:05,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 01:14:05,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 01:14:05,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 01:14:05,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 01:14:05,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 01:14:05,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 01:14:05,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 01:14:05,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 01:14:05,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 01:14:05,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 01:14:05,856 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-10-22 01:14:05,879 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 01:14:05,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 01:14:05,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 01:14:05,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 01:14:05,881 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 01:14:05,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 01:14:05,881 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 01:14:05,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 01:14:05,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 01:14:05,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 01:14:05,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 01:14:05,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 01:14:05,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 01:14:05,883 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 01:14:05,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 01:14:05,883 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 01:14:05,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 01:14:05,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 01:14:05,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 01:14:05,884 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 01:14:05,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 01:14:05,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 01:14:05,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 01:14:05,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 01:14:05,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 01:14:05,885 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 01:14:05,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 01:14:05,886 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 01:14:05,886 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 01:14:05,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 01:14:05,886 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 01:14:06,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 01:14:06,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 01:14:06,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 01:14:06,342 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 01:14:06,344 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 01:14:06,345 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/indexer.i [2020-10-22 01:14:06,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b1345143/1b24de4014344a38934d1f6035bb127e/FLAG4d0f2d876 [2020-10-22 01:14:07,249 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 01:14:07,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/indexer.i [2020-10-22 01:14:07,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b1345143/1b24de4014344a38934d1f6035bb127e/FLAG4d0f2d876 [2020-10-22 01:14:07,519 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b1345143/1b24de4014344a38934d1f6035bb127e [2020-10-22 01:14:07,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 01:14:07,536 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 01:14:07,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 01:14:07,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 01:14:07,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 01:14:07,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 01:14:07" (1/1) ... [2020-10-22 01:14:07,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aa36e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:07, skipping insertion in model container [2020-10-22 01:14:07,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 01:14:07" (1/1) ... [2020-10-22 01:14:07,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 01:14:07,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 01:14:08,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 01:14:08,390 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 01:14:08,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 01:14:08,602 INFO L208 MainTranslator]: Completed translation [2020-10-22 01:14:08,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:08 WrapperNode [2020-10-22 01:14:08,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 01:14:08,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 01:14:08,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 01:14:08,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 01:14:08,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:08" (1/1) ... [2020-10-22 01:14:08,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:08" (1/1) ... [2020-10-22 01:14:08,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 01:14:08,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 01:14:08,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 01:14:08,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 01:14:08,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:08" (1/1) ... [2020-10-22 01:14:08,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:08" (1/1) ... [2020-10-22 01:14:08,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:08" (1/1) ... [2020-10-22 01:14:08,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:08" (1/1) ... [2020-10-22 01:14:08,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:08" (1/1) ... [2020-10-22 01:14:08,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:08" (1/1) ... [2020-10-22 01:14:08,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:08" (1/1) ... [2020-10-22 01:14:08,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 01:14:08,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 01:14:08,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 01:14:08,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 01:14:08,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 01:14:08,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 01:14:08,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 01:14:08,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-22 01:14:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure thread_routine [2020-10-22 01:14:08,791 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_routine [2020-10-22 01:14:08,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 01:14:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-22 01:14:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 01:14:08,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 01:14:08,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 01:14:08,796 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 01:14:09,277 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 01:14:09,278 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-22 01:14:09,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 01:14:09 BoogieIcfgContainer [2020-10-22 01:14:09,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 01:14:09,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 01:14:09,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 01:14:09,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 01:14:09,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 01:14:07" (1/3) ... [2020-10-22 01:14:09,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f50dcf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 01:14:09, skipping insertion in model container [2020-10-22 01:14:09,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:14:08" (2/3) ... [2020-10-22 01:14:09,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f50dcf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 01:14:09, skipping insertion in model container [2020-10-22 01:14:09,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 01:14:09" (3/3) ... [2020-10-22 01:14:09,291 INFO L111 eAbstractionObserver]: Analyzing ICFG indexer.i [2020-10-22 01:14:09,304 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 01:14:09,305 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 01:14:09,313 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 01:14:09,314 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 01:14:09,349 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,350 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,350 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,350 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,351 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,351 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,351 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,352 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,352 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,352 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,352 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,352 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,353 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,353 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,353 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,354 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,354 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,354 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,354 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,355 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,355 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,355 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,356 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,356 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,356 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,356 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,356 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,357 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,357 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,357 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,374 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,374 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,375 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,375 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,375 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,375 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,375 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,376 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,376 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,376 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,377 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,377 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,377 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,377 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,377 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,377 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,377 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,378 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,378 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,380 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,381 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,381 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,381 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,381 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,381 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,382 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,382 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,382 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,382 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,383 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,383 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,383 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,383 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,384 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,384 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,384 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,384 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,384 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,385 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,385 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,385 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,385 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,386 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,386 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,386 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,386 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,387 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,387 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,387 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,387 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,388 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,388 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,388 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,388 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,388 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,389 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,389 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,389 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,389 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,390 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,390 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,394 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,395 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,395 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,395 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,395 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,396 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,396 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,396 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,396 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,396 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,397 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,397 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,397 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,397 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,398 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,398 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,398 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,398 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,398 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,399 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,399 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,399 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,399 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,399 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,400 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,400 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,400 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:14:09,408 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-10-22 01:14:09,422 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-22 01:14:09,446 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 01:14:09,446 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 01:14:09,446 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 01:14:09,447 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 01:14:09,447 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 01:14:09,447 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 01:14:09,447 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 01:14:09,447 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 01:14:09,462 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 01:14:09,463 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 114 transitions, 236 flow [2020-10-22 01:14:09,467 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 114 transitions, 236 flow [2020-10-22 01:14:09,469 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 102 places, 114 transitions, 236 flow [2020-10-22 01:14:09,563 INFO L129 PetriNetUnfolder]: 19/135 cut-off events. [2020-10-22 01:14:09,563 INFO L130 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2020-10-22 01:14:09,576 INFO L80 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 135 events. 19/135 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 214 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 81. Up to 4 conditions per place. [2020-10-22 01:14:09,583 INFO L116 LiptonReduction]: Number of co-enabled transitions 2912 [2020-10-22 01:14:11,981 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2020-10-22 01:14:12,148 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-22 01:14:12,543 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-10-22 01:14:12,710 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-22 01:14:12,806 INFO L131 LiptonReduction]: Checked pairs total: 2928 [2020-10-22 01:14:12,807 INFO L133 LiptonReduction]: Total number of compositions: 110 [2020-10-22 01:14:12,814 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 25 transitions, 58 flow [2020-10-22 01:14:12,826 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 73 states. [2020-10-22 01:14:12,828 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-10-22 01:14:12,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-22 01:14:12,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:12,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:12,836 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:14:12,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:12,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1236597171, now seen corresponding path program 1 times [2020-10-22 01:14:12,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:12,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853319758] [2020-10-22 01:14:12,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:13,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853319758] [2020-10-22 01:14:13,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:14:13,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 01:14:13,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1110556835] [2020-10-22 01:14:13,124 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:13,130 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:13,149 INFO L252 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-10-22 01:14:13,151 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:13,157 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:13,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 01:14:13,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:13,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 01:14:13,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:14:13,197 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2020-10-22 01:14:13,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:13,241 INFO L93 Difference]: Finished difference Result 61 states and 119 transitions. [2020-10-22 01:14:13,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 01:14:13,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-22 01:14:13,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:13,254 INFO L225 Difference]: With dead ends: 61 [2020-10-22 01:14:13,254 INFO L226 Difference]: Without dead ends: 53 [2020-10-22 01:14:13,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:14:13,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-22 01:14:13,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-22 01:14:13,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-22 01:14:13,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 108 transitions. [2020-10-22 01:14:13,299 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 108 transitions. Word has length 7 [2020-10-22 01:14:13,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:13,300 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 108 transitions. [2020-10-22 01:14:13,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 01:14:13,300 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 108 transitions. [2020-10-22 01:14:13,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 01:14:13,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:13,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:13,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 01:14:13,302 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:14:13,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:13,302 INFO L82 PathProgramCache]: Analyzing trace with hash -73469045, now seen corresponding path program 1 times [2020-10-22 01:14:13,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:13,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941008123] [2020-10-22 01:14:13,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:13,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:13,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941008123] [2020-10-22 01:14:13,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455079021] [2020-10-22 01:14:13,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:13,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-22 01:14:13,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:13,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:13,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:13,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-10-22 01:14:13,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1706457708] [2020-10-22 01:14:13,518 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:13,519 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:13,522 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-22 01:14:13,522 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:13,522 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:13,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:14:13,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:13,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:14:13,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:14:13,524 INFO L87 Difference]: Start difference. First operand 53 states and 108 transitions. Second operand 4 states. [2020-10-22 01:14:13,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:13,547 INFO L93 Difference]: Finished difference Result 42 states and 81 transitions. [2020-10-22 01:14:13,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 01:14:13,548 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-22 01:14:13,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:13,549 INFO L225 Difference]: With dead ends: 42 [2020-10-22 01:14:13,549 INFO L226 Difference]: Without dead ends: 42 [2020-10-22 01:14:13,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:14:13,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-22 01:14:13,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-22 01:14:13,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-22 01:14:13,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 81 transitions. [2020-10-22 01:14:13,555 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 81 transitions. Word has length 8 [2020-10-22 01:14:13,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:13,556 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 81 transitions. [2020-10-22 01:14:13,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:14:13,556 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 81 transitions. [2020-10-22 01:14:13,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 01:14:13,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:13,558 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:13,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-22 01:14:13,770 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:14:13,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:13,771 INFO L82 PathProgramCache]: Analyzing trace with hash -2030816077, now seen corresponding path program 2 times [2020-10-22 01:14:13,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:13,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169916820] [2020-10-22 01:14:13,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:13,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:14:13,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169916820] [2020-10-22 01:14:13,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514818667] [2020-10-22 01:14:13,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:13,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-22 01:14:13,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:13,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-22 01:14:13,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:14,070 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 193 [2020-10-22 01:14:14,073 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-22 01:14:14,140 INFO L625 ElimStorePlain]: treesize reduction 169, result has 11.1 percent of original size [2020-10-22 01:14:14,144 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-22 01:14:14,145 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:23, output treesize:4 [2020-10-22 01:14:14,175 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-22 01:14:14,175 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-22 01:14:14,182 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-22 01:14:14,182 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-22 01:14:14,183 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2020-10-22 01:14:14,218 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2020-10-22 01:14:14,220 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-22 01:14:14,226 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-22 01:14:14,229 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-22 01:14:14,230 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:27 [2020-10-22 01:14:14,310 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 17 [2020-10-22 01:14:14,312 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-22 01:14:14,318 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-22 01:14:14,320 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-22 01:14:14,320 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:37, output treesize:7 [2020-10-22 01:14:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:14:14,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-22 01:14:14,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 10 [2020-10-22 01:14:14,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1838728940] [2020-10-22 01:14:14,336 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:14,337 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:14,339 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-22 01:14:14,339 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:14,339 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:14,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:14:14,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:14,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:14:14,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-22 01:14:14,341 INFO L87 Difference]: Start difference. First operand 42 states and 81 transitions. Second operand 8 states. [2020-10-22 01:14:22,509 WARN L193 SmtUtils]: Spent 8.09 s on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-10-22 01:14:26,569 WARN L193 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 35 [2020-10-22 01:14:34,647 WARN L193 SmtUtils]: Spent 8.06 s on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-22 01:14:42,732 WARN L193 SmtUtils]: Spent 4.03 s on a formula simplification that was a NOOP. DAG size: 39 [2020-10-22 01:14:53,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:53,542 INFO L93 Difference]: Finished difference Result 103 states and 211 transitions. [2020-10-22 01:14:53,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:14:53,543 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-10-22 01:14:53,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:53,546 INFO L225 Difference]: With dead ends: 103 [2020-10-22 01:14:53,547 INFO L226 Difference]: Without dead ends: 103 [2020-10-22 01:14:53,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-22 01:14:53,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-22 01:14:53,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 52. [2020-10-22 01:14:53,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-22 01:14:53,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 106 transitions. [2020-10-22 01:14:53,559 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 106 transitions. Word has length 9 [2020-10-22 01:14:53,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:53,559 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 106 transitions. [2020-10-22 01:14:53,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:14:53,559 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 106 transitions. [2020-10-22 01:14:53,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:14:53,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:53,560 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:53,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:53,762 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:14:53,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:53,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1699880460, now seen corresponding path program 1 times [2020-10-22 01:14:53,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:53,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297323854] [2020-10-22 01:14:53,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:53,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-22 01:14:53,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297323854] [2020-10-22 01:14:53,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772490844] [2020-10-22 01:14:53,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:53,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-22 01:14:53,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:53,955 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-22 01:14:53,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:53,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-10-22 01:14:53,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [29839060] [2020-10-22 01:14:53,956 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:53,958 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:53,960 INFO L252 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-10-22 01:14:53,960 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:53,960 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:53,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 01:14:53,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:53,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 01:14:53,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-22 01:14:53,961 INFO L87 Difference]: Start difference. First operand 52 states and 106 transitions. Second operand 5 states. [2020-10-22 01:14:53,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:53,989 INFO L93 Difference]: Finished difference Result 53 states and 107 transitions. [2020-10-22 01:14:53,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 01:14:53,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-22 01:14:53,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:53,991 INFO L225 Difference]: With dead ends: 53 [2020-10-22 01:14:53,991 INFO L226 Difference]: Without dead ends: 53 [2020-10-22 01:14:53,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-22 01:14:53,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-22 01:14:53,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-22 01:14:53,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-22 01:14:53,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 107 transitions. [2020-10-22 01:14:53,999 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 107 transitions. Word has length 11 [2020-10-22 01:14:53,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:53,999 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 107 transitions. [2020-10-22 01:14:53,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 01:14:54,000 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 107 transitions. [2020-10-22 01:14:54,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 01:14:54,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:54,001 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:54,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:54,207 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:14:54,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:54,208 INFO L82 PathProgramCache]: Analyzing trace with hash -254332980, now seen corresponding path program 2 times [2020-10-22 01:14:54,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:54,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348012647] [2020-10-22 01:14:54,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:54,267 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-22 01:14:54,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348012647] [2020-10-22 01:14:54,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812684012] [2020-10-22 01:14:54,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:54,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:14:54,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:54,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-22 01:14:54,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:54,355 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-22 01:14:54,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:54,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-22 01:14:54,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1245432874] [2020-10-22 01:14:54,356 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:54,358 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:54,359 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-10-22 01:14:54,360 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:54,360 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:54,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 01:14:54,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:54,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 01:14:54,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:14:54,361 INFO L87 Difference]: Start difference. First operand 53 states and 107 transitions. Second operand 6 states. [2020-10-22 01:14:54,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:54,380 INFO L93 Difference]: Finished difference Result 54 states and 108 transitions. [2020-10-22 01:14:54,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 01:14:54,381 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-22 01:14:54,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:54,382 INFO L225 Difference]: With dead ends: 54 [2020-10-22 01:14:54,382 INFO L226 Difference]: Without dead ends: 54 [2020-10-22 01:14:54,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:14:54,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-22 01:14:54,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-22 01:14:54,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-22 01:14:54,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 108 transitions. [2020-10-22 01:14:54,389 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 108 transitions. Word has length 12 [2020-10-22 01:14:54,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:54,389 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 108 transitions. [2020-10-22 01:14:54,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 01:14:54,389 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 108 transitions. [2020-10-22 01:14:54,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:14:54,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:54,390 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:14:54,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:54,604 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:14:54,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:54,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1607965940, now seen corresponding path program 3 times [2020-10-22 01:14:54,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:54,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708371738] [2020-10-22 01:14:54,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:54,668 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-22 01:14:54,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708371738] [2020-10-22 01:14:54,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088079562] [2020-10-22 01:14:54,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:54,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-22 01:14:54,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:54,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-22 01:14:54,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:54,782 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-22 01:14:54,783 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-22 01:14:54,788 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-22 01:14:54,789 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-22 01:14:54,789 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:7 [2020-10-22 01:14:54,805 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-10-22 01:14:54,807 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-22 01:14:54,817 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-22 01:14:54,817 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-22 01:14:54,817 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:18, output treesize:7 [2020-10-22 01:14:54,830 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-22 01:14:54,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-22 01:14:54,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 12 [2020-10-22 01:14:54,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [268799412] [2020-10-22 01:14:54,832 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:54,833 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:54,836 INFO L252 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-22 01:14:54,836 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:54,836 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:54,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 01:14:54,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:54,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 01:14:54,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-22 01:14:54,838 INFO L87 Difference]: Start difference. First operand 54 states and 108 transitions. Second operand 7 states. [2020-10-22 01:14:55,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:55,016 INFO L93 Difference]: Finished difference Result 74 states and 150 transitions. [2020-10-22 01:14:55,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-22 01:14:55,019 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-22 01:14:55,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:55,020 INFO L225 Difference]: With dead ends: 74 [2020-10-22 01:14:55,020 INFO L226 Difference]: Without dead ends: 74 [2020-10-22 01:14:55,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:14:55,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-22 01:14:55,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 49. [2020-10-22 01:14:55,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-22 01:14:55,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 95 transitions. [2020-10-22 01:14:55,034 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 95 transitions. Word has length 13 [2020-10-22 01:14:55,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:55,034 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 95 transitions. [2020-10-22 01:14:55,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 01:14:55,034 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 95 transitions. [2020-10-22 01:14:55,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 01:14:55,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:55,035 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:14:55,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-22 01:14:55,250 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:14:55,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:55,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1607959416, now seen corresponding path program 1 times [2020-10-22 01:14:55,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:55,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930926583] [2020-10-22 01:14:55,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:55,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:55,343 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:14:55,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930926583] [2020-10-22 01:14:55,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329621147] [2020-10-22 01:14:55,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:55,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-22 01:14:55,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:55,420 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:14:55,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:55,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-22 01:14:55,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1513414280] [2020-10-22 01:14:55,421 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:55,423 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:55,425 INFO L252 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-22 01:14:55,425 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:55,426 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:55,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 01:14:55,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:55,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 01:14:55,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-22 01:14:55,427 INFO L87 Difference]: Start difference. First operand 49 states and 95 transitions. Second operand 7 states. [2020-10-22 01:14:55,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:55,453 INFO L93 Difference]: Finished difference Result 50 states and 96 transitions. [2020-10-22 01:14:55,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 01:14:55,454 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-22 01:14:55,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:55,455 INFO L225 Difference]: With dead ends: 50 [2020-10-22 01:14:55,455 INFO L226 Difference]: Without dead ends: 50 [2020-10-22 01:14:55,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-22 01:14:55,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-22 01:14:55,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-22 01:14:55,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-22 01:14:55,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 96 transitions. [2020-10-22 01:14:55,460 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 96 transitions. Word has length 13 [2020-10-22 01:14:55,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:55,460 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 96 transitions. [2020-10-22 01:14:55,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 01:14:55,460 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 96 transitions. [2020-10-22 01:14:55,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-22 01:14:55,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:55,461 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:14:55,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:55,672 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:14:55,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:55,673 INFO L82 PathProgramCache]: Analyzing trace with hash -790316208, now seen corresponding path program 2 times [2020-10-22 01:14:55,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:55,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76164138] [2020-10-22 01:14:55,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:55,785 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:14:55,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76164138] [2020-10-22 01:14:55,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233509056] [2020-10-22 01:14:55,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:55,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:14:55,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:55,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-22 01:14:55,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:55,880 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:14:55,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:55,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-22 01:14:55,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1665111319] [2020-10-22 01:14:55,883 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:55,885 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:55,893 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 14 transitions. [2020-10-22 01:14:55,893 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:55,894 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:55,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 01:14:55,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:55,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 01:14:55,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-22 01:14:55,895 INFO L87 Difference]: Start difference. First operand 50 states and 96 transitions. Second operand 8 states. [2020-10-22 01:14:55,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:55,920 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2020-10-22 01:14:55,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-22 01:14:55,921 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-22 01:14:55,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:55,921 INFO L225 Difference]: With dead ends: 51 [2020-10-22 01:14:55,922 INFO L226 Difference]: Without dead ends: 51 [2020-10-22 01:14:55,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-22 01:14:55,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-22 01:14:55,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-22 01:14:55,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-22 01:14:55,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 97 transitions. [2020-10-22 01:14:55,937 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 97 transitions. Word has length 14 [2020-10-22 01:14:55,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:55,937 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 97 transitions. [2020-10-22 01:14:55,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 01:14:55,938 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 97 transitions. [2020-10-22 01:14:55,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 01:14:55,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:55,939 INFO L422 BasicCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:14:56,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:56,155 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:14:56,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:56,155 INFO L82 PathProgramCache]: Analyzing trace with hash -2122416520, now seen corresponding path program 3 times [2020-10-22 01:14:56,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:56,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181807943] [2020-10-22 01:14:56,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:56,273 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:14:56,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181807943] [2020-10-22 01:14:56,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102432950] [2020-10-22 01:14:56,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:56,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-22 01:14:56,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:56,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-22 01:14:56,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:56,377 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:14:56,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:56,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-10-22 01:14:56,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [514894205] [2020-10-22 01:14:56,378 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:56,380 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:56,382 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-10-22 01:14:56,383 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:56,383 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:56,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:14:56,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:56,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:14:56,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-22 01:14:56,384 INFO L87 Difference]: Start difference. First operand 51 states and 97 transitions. Second operand 9 states. [2020-10-22 01:14:56,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:56,411 INFO L93 Difference]: Finished difference Result 52 states and 98 transitions. [2020-10-22 01:14:56,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-22 01:14:56,412 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-22 01:14:56,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:56,412 INFO L225 Difference]: With dead ends: 52 [2020-10-22 01:14:56,413 INFO L226 Difference]: Without dead ends: 52 [2020-10-22 01:14:56,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-22 01:14:56,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-22 01:14:56,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-22 01:14:56,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-22 01:14:56,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 98 transitions. [2020-10-22 01:14:56,417 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 98 transitions. Word has length 15 [2020-10-22 01:14:56,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:56,417 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 98 transitions. [2020-10-22 01:14:56,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:14:56,418 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-10-22 01:14:56,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-22 01:14:56,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:56,418 INFO L422 BasicCegarLoop]: trace histogram [7, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:14:56,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-10-22 01:14:56,629 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:14:56,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:56,629 INFO L82 PathProgramCache]: Analyzing trace with hash -467853232, now seen corresponding path program 4 times [2020-10-22 01:14:56,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:56,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987732413] [2020-10-22 01:14:56,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:56,721 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:14:56,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987732413] [2020-10-22 01:14:56,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976442198] [2020-10-22 01:14:56,722 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:56,781 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:14:56,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:56,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 01:14:56,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:56,802 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:14:56,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:56,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-10-22 01:14:56,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1928270776] [2020-10-22 01:14:56,803 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:56,805 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:56,809 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 16 transitions. [2020-10-22 01:14:56,809 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:56,810 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:56,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 01:14:56,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:56,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 01:14:56,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-22 01:14:56,813 INFO L87 Difference]: Start difference. First operand 52 states and 98 transitions. Second operand 10 states. [2020-10-22 01:14:56,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:56,843 INFO L93 Difference]: Finished difference Result 53 states and 99 transitions. [2020-10-22 01:14:56,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-22 01:14:56,844 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-10-22 01:14:56,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:56,845 INFO L225 Difference]: With dead ends: 53 [2020-10-22 01:14:56,845 INFO L226 Difference]: Without dead ends: 53 [2020-10-22 01:14:56,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-22 01:14:56,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-22 01:14:56,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-22 01:14:56,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-22 01:14:56,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 99 transitions. [2020-10-22 01:14:56,849 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 99 transitions. Word has length 16 [2020-10-22 01:14:56,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:56,849 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 99 transitions. [2020-10-22 01:14:56,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 01:14:56,850 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 99 transitions. [2020-10-22 01:14:56,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 01:14:56,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:56,850 INFO L422 BasicCegarLoop]: trace histogram [8, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:14:57,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:57,051 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:14:57,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:57,052 INFO L82 PathProgramCache]: Analyzing trace with hash -715998856, now seen corresponding path program 5 times [2020-10-22 01:14:57,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:57,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109060520] [2020-10-22 01:14:57,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:57,188 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:14:57,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109060520] [2020-10-22 01:14:57,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419163782] [2020-10-22 01:14:57,189 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:57,284 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-22 01:14:57,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:57,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 01:14:57,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:57,300 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:14:57,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:57,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-10-22 01:14:57,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [817205897] [2020-10-22 01:14:57,301 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:57,303 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:57,306 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-10-22 01:14:57,306 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:57,306 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:57,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-22 01:14:57,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:57,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-22 01:14:57,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-22 01:14:57,308 INFO L87 Difference]: Start difference. First operand 53 states and 99 transitions. Second operand 11 states. [2020-10-22 01:14:57,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:57,340 INFO L93 Difference]: Finished difference Result 54 states and 100 transitions. [2020-10-22 01:14:57,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-22 01:14:57,344 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2020-10-22 01:14:57,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:57,344 INFO L225 Difference]: With dead ends: 54 [2020-10-22 01:14:57,344 INFO L226 Difference]: Without dead ends: 54 [2020-10-22 01:14:57,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-22 01:14:57,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-22 01:14:57,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-22 01:14:57,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-22 01:14:57,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 100 transitions. [2020-10-22 01:14:57,353 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 100 transitions. Word has length 17 [2020-10-22 01:14:57,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:57,354 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 100 transitions. [2020-10-22 01:14:57,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-22 01:14:57,356 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 100 transitions. [2020-10-22 01:14:57,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-22 01:14:57,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:57,357 INFO L422 BasicCegarLoop]: trace histogram [9, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:14:57,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:57,558 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:14:57,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:57,559 INFO L82 PathProgramCache]: Analyzing trace with hash 181421392, now seen corresponding path program 6 times [2020-10-22 01:14:57,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:57,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19098954] [2020-10-22 01:14:57,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:57,663 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:14:57,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19098954] [2020-10-22 01:14:57,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44861565] [2020-10-22 01:14:57,665 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:57,786 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-10-22 01:14:57,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:57,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-22 01:14:57,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:57,809 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:14:57,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:57,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-10-22 01:14:57,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1330834295] [2020-10-22 01:14:57,810 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:57,813 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:57,816 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 18 transitions. [2020-10-22 01:14:57,816 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:57,817 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:57,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-22 01:14:57,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:57,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-22 01:14:57,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-22 01:14:57,818 INFO L87 Difference]: Start difference. First operand 54 states and 100 transitions. Second operand 12 states. [2020-10-22 01:14:57,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:57,851 INFO L93 Difference]: Finished difference Result 55 states and 101 transitions. [2020-10-22 01:14:57,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-22 01:14:57,852 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-10-22 01:14:57,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:57,853 INFO L225 Difference]: With dead ends: 55 [2020-10-22 01:14:57,853 INFO L226 Difference]: Without dead ends: 55 [2020-10-22 01:14:57,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-22 01:14:57,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-22 01:14:57,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-22 01:14:57,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-22 01:14:57,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 101 transitions. [2020-10-22 01:14:57,857 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 101 transitions. Word has length 18 [2020-10-22 01:14:57,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:57,857 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 101 transitions. [2020-10-22 01:14:57,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-22 01:14:57,857 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 101 transitions. [2020-10-22 01:14:57,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-22 01:14:57,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:57,858 INFO L422 BasicCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:14:58,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-22 01:14:58,069 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:14:58,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:58,069 INFO L82 PathProgramCache]: Analyzing trace with hash -2063321992, now seen corresponding path program 7 times [2020-10-22 01:14:58,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:58,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63118137] [2020-10-22 01:14:58,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:58,185 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:14:58,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63118137] [2020-10-22 01:14:58,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369753463] [2020-10-22 01:14:58,186 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:58,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-22 01:14:58,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:58,316 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:14:58,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:58,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-10-22 01:14:58,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [509236805] [2020-10-22 01:14:58,317 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:58,319 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:58,324 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-10-22 01:14:58,325 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:58,325 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:58,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-22 01:14:58,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:58,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-22 01:14:58,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:14:58,326 INFO L87 Difference]: Start difference. First operand 55 states and 101 transitions. Second operand 13 states. [2020-10-22 01:14:58,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:58,352 INFO L93 Difference]: Finished difference Result 56 states and 102 transitions. [2020-10-22 01:14:58,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:14:58,357 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 19 [2020-10-22 01:14:58,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:58,358 INFO L225 Difference]: With dead ends: 56 [2020-10-22 01:14:58,358 INFO L226 Difference]: Without dead ends: 56 [2020-10-22 01:14:58,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:14:58,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-22 01:14:58,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-22 01:14:58,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-22 01:14:58,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 102 transitions. [2020-10-22 01:14:58,362 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 102 transitions. Word has length 19 [2020-10-22 01:14:58,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:58,362 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 102 transitions. [2020-10-22 01:14:58,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-22 01:14:58,363 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 102 transitions. [2020-10-22 01:14:58,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-22 01:14:58,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:58,363 INFO L422 BasicCegarLoop]: trace histogram [11, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:14:58,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-22 01:14:58,572 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:14:58,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:58,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1364077136, now seen corresponding path program 8 times [2020-10-22 01:14:58,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:58,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372418201] [2020-10-22 01:14:58,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:58,697 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:14:58,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372418201] [2020-10-22 01:14:58,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863468131] [2020-10-22 01:14:58,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:58,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:14:58,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:58,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-22 01:14:58,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:58,781 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:14:58,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:58,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-10-22 01:14:58,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [61082898] [2020-10-22 01:14:58,782 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:58,787 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:58,792 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 20 transitions. [2020-10-22 01:14:58,792 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:58,793 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:58,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-22 01:14:58,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:58,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-22 01:14:58,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-22 01:14:58,794 INFO L87 Difference]: Start difference. First operand 56 states and 102 transitions. Second operand 14 states. [2020-10-22 01:14:58,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:58,838 INFO L93 Difference]: Finished difference Result 57 states and 103 transitions. [2020-10-22 01:14:58,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-22 01:14:58,838 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 20 [2020-10-22 01:14:58,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:58,839 INFO L225 Difference]: With dead ends: 57 [2020-10-22 01:14:58,839 INFO L226 Difference]: Without dead ends: 57 [2020-10-22 01:14:58,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-22 01:14:58,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-22 01:14:58,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-22 01:14:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-22 01:14:58,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 103 transitions. [2020-10-22 01:14:58,843 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 103 transitions. Word has length 20 [2020-10-22 01:14:58,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:58,843 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 103 transitions. [2020-10-22 01:14:58,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-22 01:14:58,843 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 103 transitions. [2020-10-22 01:14:58,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-22 01:14:58,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:58,846 INFO L422 BasicCegarLoop]: trace histogram [12, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:14:59,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-22 01:14:59,047 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:14:59,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:59,047 INFO L82 PathProgramCache]: Analyzing trace with hash 239267704, now seen corresponding path program 9 times [2020-10-22 01:14:59,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:59,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491575126] [2020-10-22 01:14:59,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:59,198 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:14:59,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491575126] [2020-10-22 01:14:59,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603019945] [2020-10-22 01:14:59,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:59,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-10-22 01:14:59,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:59,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-22 01:14:59,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:59,365 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:14:59,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:59,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-10-22 01:14:59,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [541453668] [2020-10-22 01:14:59,366 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:59,369 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:59,373 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-22 01:14:59,373 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:59,374 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:59,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-22 01:14:59,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:59,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-22 01:14:59,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:14:59,375 INFO L87 Difference]: Start difference. First operand 57 states and 103 transitions. Second operand 15 states. [2020-10-22 01:14:59,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:14:59,405 INFO L93 Difference]: Finished difference Result 58 states and 104 transitions. [2020-10-22 01:14:59,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-22 01:14:59,406 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 21 [2020-10-22 01:14:59,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:14:59,407 INFO L225 Difference]: With dead ends: 58 [2020-10-22 01:14:59,407 INFO L226 Difference]: Without dead ends: 58 [2020-10-22 01:14:59,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-22 01:14:59,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-22 01:14:59,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-22 01:14:59,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-22 01:14:59,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 104 transitions. [2020-10-22 01:14:59,410 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 104 transitions. Word has length 21 [2020-10-22 01:14:59,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:14:59,410 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 104 transitions. [2020-10-22 01:14:59,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-22 01:14:59,411 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 104 transitions. [2020-10-22 01:14:59,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-22 01:14:59,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:14:59,411 INFO L422 BasicCegarLoop]: trace histogram [13, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:14:59,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:59,613 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:14:59,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:14:59,613 INFO L82 PathProgramCache]: Analyzing trace with hash -270086320, now seen corresponding path program 10 times [2020-10-22 01:14:59,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:14:59,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532527611] [2020-10-22 01:14:59,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:14:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:14:59,808 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:14:59,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532527611] [2020-10-22 01:14:59,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454126880] [2020-10-22 01:14:59,809 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:14:59,905 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:14:59,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:14:59,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-22 01:14:59,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:14:59,938 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:14:59,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:14:59,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-10-22 01:14:59,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [999082792] [2020-10-22 01:14:59,939 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:14:59,945 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:14:59,951 INFO L252 McrAutomatonBuilder]: Finished intersection with 23 states and 22 transitions. [2020-10-22 01:14:59,951 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:14:59,952 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:14:59,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-22 01:14:59,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:14:59,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-22 01:14:59,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-22 01:14:59,954 INFO L87 Difference]: Start difference. First operand 58 states and 104 transitions. Second operand 16 states. [2020-10-22 01:15:00,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:00,004 INFO L93 Difference]: Finished difference Result 59 states and 105 transitions. [2020-10-22 01:15:00,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-22 01:15:00,005 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2020-10-22 01:15:00,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:00,006 INFO L225 Difference]: With dead ends: 59 [2020-10-22 01:15:00,006 INFO L226 Difference]: Without dead ends: 59 [2020-10-22 01:15:00,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-22 01:15:00,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-22 01:15:00,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-22 01:15:00,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-22 01:15:00,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 105 transitions. [2020-10-22 01:15:00,012 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 105 transitions. Word has length 22 [2020-10-22 01:15:00,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:00,013 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 105 transitions. [2020-10-22 01:15:00,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-22 01:15:00,013 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 105 transitions. [2020-10-22 01:15:00,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-22 01:15:00,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:00,018 INFO L422 BasicCegarLoop]: trace histogram [14, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:15:00,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-22 01:15:00,219 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:15:00,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:00,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1119808120, now seen corresponding path program 11 times [2020-10-22 01:15:00,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:00,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286789169] [2020-10-22 01:15:00,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:00,503 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:00,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286789169] [2020-10-22 01:15:00,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884590830] [2020-10-22 01:15:00,504 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:00,679 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-10-22 01:15:00,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:00,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-22 01:15:00,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:00,700 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:00,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:00,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-10-22 01:15:00,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1900655018] [2020-10-22 01:15:00,701 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:00,705 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:00,710 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-10-22 01:15:00,711 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:00,711 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:00,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-22 01:15:00,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:00,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-22 01:15:00,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-22 01:15:00,713 INFO L87 Difference]: Start difference. First operand 59 states and 105 transitions. Second operand 17 states. [2020-10-22 01:15:00,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:00,752 INFO L93 Difference]: Finished difference Result 60 states and 106 transitions. [2020-10-22 01:15:00,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-22 01:15:00,752 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 23 [2020-10-22 01:15:00,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:00,753 INFO L225 Difference]: With dead ends: 60 [2020-10-22 01:15:00,753 INFO L226 Difference]: Without dead ends: 60 [2020-10-22 01:15:00,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-22 01:15:00,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-22 01:15:00,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-22 01:15:00,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-22 01:15:00,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 106 transitions. [2020-10-22 01:15:00,757 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 106 transitions. Word has length 23 [2020-10-22 01:15:00,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:00,757 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 106 transitions. [2020-10-22 01:15:00,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-22 01:15:00,757 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 106 transitions. [2020-10-22 01:15:00,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-22 01:15:00,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:00,758 INFO L422 BasicCegarLoop]: trace histogram [15, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:15:00,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-22 01:15:00,969 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:15:00,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:00,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1256862800, now seen corresponding path program 12 times [2020-10-22 01:15:00,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:00,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962529848] [2020-10-22 01:15:00,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:01,174 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:01,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962529848] [2020-10-22 01:15:01,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667950468] [2020-10-22 01:15:01,175 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:01,395 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-10-22 01:15:01,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:01,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-22 01:15:01,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:01,429 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:01,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:01,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-10-22 01:15:01,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [528609444] [2020-10-22 01:15:01,430 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:01,434 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:01,441 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 24 transitions. [2020-10-22 01:15:01,441 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:01,442 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:01,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-22 01:15:01,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:01,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-22 01:15:01,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-22 01:15:01,443 INFO L87 Difference]: Start difference. First operand 60 states and 106 transitions. Second operand 18 states. [2020-10-22 01:15:01,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:01,478 INFO L93 Difference]: Finished difference Result 61 states and 107 transitions. [2020-10-22 01:15:01,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-22 01:15:01,479 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 24 [2020-10-22 01:15:01,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:01,480 INFO L225 Difference]: With dead ends: 61 [2020-10-22 01:15:01,480 INFO L226 Difference]: Without dead ends: 61 [2020-10-22 01:15:01,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-22 01:15:01,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-22 01:15:01,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-22 01:15:01,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-22 01:15:01,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 107 transitions. [2020-10-22 01:15:01,484 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 107 transitions. Word has length 24 [2020-10-22 01:15:01,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:01,485 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 107 transitions. [2020-10-22 01:15:01,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-22 01:15:01,485 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 107 transitions. [2020-10-22 01:15:01,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-22 01:15:01,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:01,487 INFO L422 BasicCegarLoop]: trace histogram [16, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:15:01,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-22 01:15:01,698 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:15:01,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:01,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1210590584, now seen corresponding path program 13 times [2020-10-22 01:15:01,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:01,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362788848] [2020-10-22 01:15:01,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:01,974 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:01,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362788848] [2020-10-22 01:15:01,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531587891] [2020-10-22 01:15:01,975 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:02,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-22 01:15:02,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:02,074 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:02,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:02,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-10-22 01:15:02,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1735418801] [2020-10-22 01:15:02,075 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:02,079 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:02,086 INFO L252 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-10-22 01:15:02,087 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:02,087 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:02,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-22 01:15:02,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:02,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-22 01:15:02,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-22 01:15:02,089 INFO L87 Difference]: Start difference. First operand 61 states and 107 transitions. Second operand 19 states. [2020-10-22 01:15:02,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:02,124 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-10-22 01:15:02,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-22 01:15:02,125 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 25 [2020-10-22 01:15:02,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:02,126 INFO L225 Difference]: With dead ends: 62 [2020-10-22 01:15:02,126 INFO L226 Difference]: Without dead ends: 62 [2020-10-22 01:15:02,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-22 01:15:02,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-22 01:15:02,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-22 01:15:02,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-22 01:15:02,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 108 transitions. [2020-10-22 01:15:02,130 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 108 transitions. Word has length 25 [2020-10-22 01:15:02,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:02,130 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 108 transitions. [2020-10-22 01:15:02,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-22 01:15:02,130 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 108 transitions. [2020-10-22 01:15:02,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-22 01:15:02,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:02,131 INFO L422 BasicCegarLoop]: trace histogram [17, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:15:02,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:02,340 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:15:02,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:02,341 INFO L82 PathProgramCache]: Analyzing trace with hash -223848112, now seen corresponding path program 14 times [2020-10-22 01:15:02,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:02,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065791753] [2020-10-22 01:15:02,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:02,619 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:02,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065791753] [2020-10-22 01:15:02,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234844139] [2020-10-22 01:15:02,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:02,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:15:02,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:02,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-22 01:15:02,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:02,710 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:02,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:02,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-10-22 01:15:02,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1305057922] [2020-10-22 01:15:02,711 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:02,716 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:02,722 INFO L252 McrAutomatonBuilder]: Finished intersection with 27 states and 26 transitions. [2020-10-22 01:15:02,723 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:02,723 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:02,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-22 01:15:02,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:02,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-22 01:15:02,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-22 01:15:02,724 INFO L87 Difference]: Start difference. First operand 62 states and 108 transitions. Second operand 20 states. [2020-10-22 01:15:02,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:02,771 INFO L93 Difference]: Finished difference Result 63 states and 109 transitions. [2020-10-22 01:15:02,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-22 01:15:02,774 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 26 [2020-10-22 01:15:02,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:02,775 INFO L225 Difference]: With dead ends: 63 [2020-10-22 01:15:02,775 INFO L226 Difference]: Without dead ends: 63 [2020-10-22 01:15:02,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-22 01:15:02,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-22 01:15:02,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-22 01:15:02,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-22 01:15:02,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 109 transitions. [2020-10-22 01:15:02,779 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 109 transitions. Word has length 26 [2020-10-22 01:15:02,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:02,782 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 109 transitions. [2020-10-22 01:15:02,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-22 01:15:02,782 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 109 transitions. [2020-10-22 01:15:02,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-22 01:15:02,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:02,783 INFO L422 BasicCegarLoop]: trace histogram [18, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:15:02,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:02,992 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:15:02,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:02,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1741774728, now seen corresponding path program 15 times [2020-10-22 01:15:02,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:02,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060036300] [2020-10-22 01:15:02,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:03,256 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:03,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060036300] [2020-10-22 01:15:03,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866787933] [2020-10-22 01:15:03,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:03,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-10-22 01:15:03,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:03,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-22 01:15:03,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:03,980 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:03,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:03,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-10-22 01:15:03,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1058858767] [2020-10-22 01:15:03,981 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:03,986 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:03,994 INFO L252 McrAutomatonBuilder]: Finished intersection with 28 states and 27 transitions. [2020-10-22 01:15:03,994 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:03,995 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:03,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-22 01:15:03,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:03,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-22 01:15:03,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-22 01:15:03,996 INFO L87 Difference]: Start difference. First operand 63 states and 109 transitions. Second operand 21 states. [2020-10-22 01:15:04,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:04,031 INFO L93 Difference]: Finished difference Result 64 states and 110 transitions. [2020-10-22 01:15:04,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-22 01:15:04,032 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 27 [2020-10-22 01:15:04,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:04,033 INFO L225 Difference]: With dead ends: 64 [2020-10-22 01:15:04,033 INFO L226 Difference]: Without dead ends: 64 [2020-10-22 01:15:04,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-22 01:15:04,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-22 01:15:04,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-10-22 01:15:04,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-22 01:15:04,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 110 transitions. [2020-10-22 01:15:04,038 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 110 transitions. Word has length 27 [2020-10-22 01:15:04,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:04,039 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 110 transitions. [2020-10-22 01:15:04,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-22 01:15:04,039 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 110 transitions. [2020-10-22 01:15:04,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-22 01:15:04,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:04,040 INFO L422 BasicCegarLoop]: trace histogram [19, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:15:04,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-22 01:15:04,241 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:15:04,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:04,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1552859568, now seen corresponding path program 16 times [2020-10-22 01:15:04,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:04,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950500401] [2020-10-22 01:15:04,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:04,538 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:04,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950500401] [2020-10-22 01:15:04,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076367910] [2020-10-22 01:15:04,539 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:04,627 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:15:04,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:04,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-22 01:15:04,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:04,659 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:04,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:04,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-10-22 01:15:04,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [154654449] [2020-10-22 01:15:04,660 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:04,665 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:04,673 INFO L252 McrAutomatonBuilder]: Finished intersection with 29 states and 28 transitions. [2020-10-22 01:15:04,674 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:04,674 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:04,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-22 01:15:04,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:04,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-22 01:15:04,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-22 01:15:04,675 INFO L87 Difference]: Start difference. First operand 64 states and 110 transitions. Second operand 22 states. [2020-10-22 01:15:04,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:04,723 INFO L93 Difference]: Finished difference Result 65 states and 111 transitions. [2020-10-22 01:15:04,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-22 01:15:04,723 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 28 [2020-10-22 01:15:04,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:04,724 INFO L225 Difference]: With dead ends: 65 [2020-10-22 01:15:04,724 INFO L226 Difference]: Without dead ends: 65 [2020-10-22 01:15:04,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-22 01:15:04,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-22 01:15:04,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-22 01:15:04,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-22 01:15:04,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 111 transitions. [2020-10-22 01:15:04,727 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 111 transitions. Word has length 28 [2020-10-22 01:15:04,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:04,727 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 111 transitions. [2020-10-22 01:15:04,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-22 01:15:04,728 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 111 transitions. [2020-10-22 01:15:04,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-22 01:15:04,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:04,728 INFO L422 BasicCegarLoop]: trace histogram [20, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:15:04,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-22 01:15:04,938 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:15:04,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:04,939 INFO L82 PathProgramCache]: Analyzing trace with hash 8543096, now seen corresponding path program 17 times [2020-10-22 01:15:04,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:04,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278422330] [2020-10-22 01:15:04,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:05,274 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:05,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278422330] [2020-10-22 01:15:05,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061461837] [2020-10-22 01:15:05,275 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:05,503 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-10-22 01:15:05,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:05,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-22 01:15:05,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:05,536 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:05,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:05,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-10-22 01:15:05,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [781338065] [2020-10-22 01:15:05,541 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:05,549 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:05,559 INFO L252 McrAutomatonBuilder]: Finished intersection with 30 states and 29 transitions. [2020-10-22 01:15:05,560 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:05,561 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:05,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-22 01:15:05,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:05,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-22 01:15:05,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-22 01:15:05,562 INFO L87 Difference]: Start difference. First operand 65 states and 111 transitions. Second operand 23 states. [2020-10-22 01:15:05,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:05,600 INFO L93 Difference]: Finished difference Result 66 states and 112 transitions. [2020-10-22 01:15:05,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-22 01:15:05,601 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 29 [2020-10-22 01:15:05,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:05,601 INFO L225 Difference]: With dead ends: 66 [2020-10-22 01:15:05,602 INFO L226 Difference]: Without dead ends: 66 [2020-10-22 01:15:05,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-22 01:15:05,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-22 01:15:05,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-22 01:15:05,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-22 01:15:05,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 112 transitions. [2020-10-22 01:15:05,605 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 112 transitions. Word has length 29 [2020-10-22 01:15:05,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:05,605 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 112 transitions. [2020-10-22 01:15:05,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-22 01:15:05,606 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 112 transitions. [2020-10-22 01:15:05,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-22 01:15:05,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:05,606 INFO L422 BasicCegarLoop]: trace histogram [21, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:15:05,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:05,815 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:15:05,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:05,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1167385424, now seen corresponding path program 18 times [2020-10-22 01:15:05,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:05,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828001249] [2020-10-22 01:15:05,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:06,173 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:06,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828001249] [2020-10-22 01:15:06,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267976485] [2020-10-22 01:15:06,174 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:07,730 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-10-22 01:15:07,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:07,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-22 01:15:07,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:07,762 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:07,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:07,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-10-22 01:15:07,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1911276267] [2020-10-22 01:15:07,763 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:07,769 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:07,778 INFO L252 McrAutomatonBuilder]: Finished intersection with 31 states and 30 transitions. [2020-10-22 01:15:07,778 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:07,778 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:07,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-22 01:15:07,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:07,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-22 01:15:07,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-10-22 01:15:07,780 INFO L87 Difference]: Start difference. First operand 66 states and 112 transitions. Second operand 24 states. [2020-10-22 01:15:07,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:07,821 INFO L93 Difference]: Finished difference Result 67 states and 113 transitions. [2020-10-22 01:15:07,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-22 01:15:07,821 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 30 [2020-10-22 01:15:07,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:07,822 INFO L225 Difference]: With dead ends: 67 [2020-10-22 01:15:07,822 INFO L226 Difference]: Without dead ends: 67 [2020-10-22 01:15:07,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-10-22 01:15:07,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-22 01:15:07,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-22 01:15:07,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-22 01:15:07,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 113 transitions. [2020-10-22 01:15:07,826 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 113 transitions. Word has length 30 [2020-10-22 01:15:07,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:07,826 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 113 transitions. [2020-10-22 01:15:07,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-22 01:15:07,826 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 113 transitions. [2020-10-22 01:15:07,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-22 01:15:07,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:07,827 INFO L422 BasicCegarLoop]: trace histogram [22, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:15:08,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-22 01:15:08,028 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:15:08,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:08,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1563208072, now seen corresponding path program 19 times [2020-10-22 01:15:08,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:08,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449775777] [2020-10-22 01:15:08,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:08,468 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:08,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449775777] [2020-10-22 01:15:08,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468550666] [2020-10-22 01:15:08,469 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:08,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-22 01:15:08,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:08,570 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:08,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:08,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-10-22 01:15:08,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1832662283] [2020-10-22 01:15:08,571 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:08,577 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:08,587 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 31 transitions. [2020-10-22 01:15:08,588 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:08,588 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:08,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-22 01:15:08,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:08,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-22 01:15:08,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-10-22 01:15:08,590 INFO L87 Difference]: Start difference. First operand 67 states and 113 transitions. Second operand 25 states. [2020-10-22 01:15:08,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:08,633 INFO L93 Difference]: Finished difference Result 68 states and 114 transitions. [2020-10-22 01:15:08,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-22 01:15:08,633 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 31 [2020-10-22 01:15:08,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:08,634 INFO L225 Difference]: With dead ends: 68 [2020-10-22 01:15:08,634 INFO L226 Difference]: Without dead ends: 68 [2020-10-22 01:15:08,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-10-22 01:15:08,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-22 01:15:08,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-22 01:15:08,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-22 01:15:08,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 114 transitions. [2020-10-22 01:15:08,637 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 114 transitions. Word has length 31 [2020-10-22 01:15:08,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:08,637 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 114 transitions. [2020-10-22 01:15:08,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-22 01:15:08,637 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 114 transitions. [2020-10-22 01:15:08,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-22 01:15:08,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:08,638 INFO L422 BasicCegarLoop]: trace histogram [23, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:15:08,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:08,839 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:15:08,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:08,839 INFO L82 PathProgramCache]: Analyzing trace with hash -312260528, now seen corresponding path program 20 times [2020-10-22 01:15:08,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:08,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779553538] [2020-10-22 01:15:08,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:09,227 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:09,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779553538] [2020-10-22 01:15:09,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921765403] [2020-10-22 01:15:09,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:09,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:15:09,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:09,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-22 01:15:09,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:09,329 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:09,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:09,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-22 01:15:09,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1488044257] [2020-10-22 01:15:09,331 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:09,338 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:09,350 INFO L252 McrAutomatonBuilder]: Finished intersection with 33 states and 32 transitions. [2020-10-22 01:15:09,350 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:09,351 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:09,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-22 01:15:09,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:09,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-22 01:15:09,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-10-22 01:15:09,352 INFO L87 Difference]: Start difference. First operand 68 states and 114 transitions. Second operand 26 states. [2020-10-22 01:15:09,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:09,405 INFO L93 Difference]: Finished difference Result 69 states and 115 transitions. [2020-10-22 01:15:09,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-22 01:15:09,407 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 32 [2020-10-22 01:15:09,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:09,408 INFO L225 Difference]: With dead ends: 69 [2020-10-22 01:15:09,408 INFO L226 Difference]: Without dead ends: 69 [2020-10-22 01:15:09,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-10-22 01:15:09,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-22 01:15:09,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-22 01:15:09,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-22 01:15:09,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 115 transitions. [2020-10-22 01:15:09,411 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 115 transitions. Word has length 32 [2020-10-22 01:15:09,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:09,411 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 115 transitions. [2020-10-22 01:15:09,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-22 01:15:09,412 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 115 transitions. [2020-10-22 01:15:09,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-22 01:15:09,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:09,412 INFO L422 BasicCegarLoop]: trace histogram [24, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:15:09,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-22 01:15:09,624 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:15:09,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:09,624 INFO L82 PathProgramCache]: Analyzing trace with hash -187592328, now seen corresponding path program 21 times [2020-10-22 01:15:09,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:09,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610601759] [2020-10-22 01:15:09,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:10,167 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:10,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610601759] [2020-10-22 01:15:10,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187426889] [2020-10-22 01:15:10,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:11,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-10-22 01:15:11,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:11,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-22 01:15:11,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:11,260 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:11,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:11,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-22 01:15:11,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [493931062] [2020-10-22 01:15:11,261 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:11,268 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:11,280 INFO L252 McrAutomatonBuilder]: Finished intersection with 34 states and 33 transitions. [2020-10-22 01:15:11,281 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:11,281 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:11,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-22 01:15:11,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:11,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-22 01:15:11,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-10-22 01:15:11,283 INFO L87 Difference]: Start difference. First operand 69 states and 115 transitions. Second operand 27 states. [2020-10-22 01:15:11,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:11,324 INFO L93 Difference]: Finished difference Result 70 states and 116 transitions. [2020-10-22 01:15:11,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-22 01:15:11,326 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 33 [2020-10-22 01:15:11,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:11,326 INFO L225 Difference]: With dead ends: 70 [2020-10-22 01:15:11,326 INFO L226 Difference]: Without dead ends: 70 [2020-10-22 01:15:11,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-10-22 01:15:11,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-22 01:15:11,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-10-22 01:15:11,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-22 01:15:11,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 116 transitions. [2020-10-22 01:15:11,330 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 116 transitions. Word has length 33 [2020-10-22 01:15:11,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:11,330 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 116 transitions. [2020-10-22 01:15:11,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-22 01:15:11,330 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 116 transitions. [2020-10-22 01:15:11,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-22 01:15:11,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:11,331 INFO L422 BasicCegarLoop]: trace histogram [25, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:15:11,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-22 01:15:11,532 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:15:11,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:11,532 INFO L82 PathProgramCache]: Analyzing trace with hash -617845424, now seen corresponding path program 22 times [2020-10-22 01:15:11,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:11,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359359360] [2020-10-22 01:15:11,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:12,090 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:12,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359359360] [2020-10-22 01:15:12,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612037991] [2020-10-22 01:15:12,091 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:12,197 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:15:12,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:12,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-22 01:15:12,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:12,228 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:12,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:12,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-10-22 01:15:12,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [637678078] [2020-10-22 01:15:12,229 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:12,243 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:12,261 INFO L252 McrAutomatonBuilder]: Finished intersection with 35 states and 34 transitions. [2020-10-22 01:15:12,261 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:12,262 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:12,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-22 01:15:12,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:12,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-22 01:15:12,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-10-22 01:15:12,264 INFO L87 Difference]: Start difference. First operand 70 states and 116 transitions. Second operand 28 states. [2020-10-22 01:15:12,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:12,323 INFO L93 Difference]: Finished difference Result 71 states and 117 transitions. [2020-10-22 01:15:12,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-22 01:15:12,324 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 34 [2020-10-22 01:15:12,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:12,325 INFO L225 Difference]: With dead ends: 71 [2020-10-22 01:15:12,325 INFO L226 Difference]: Without dead ends: 71 [2020-10-22 01:15:12,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-10-22 01:15:12,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-22 01:15:12,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-22 01:15:12,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-22 01:15:12,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 117 transitions. [2020-10-22 01:15:12,329 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 117 transitions. Word has length 34 [2020-10-22 01:15:12,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:12,330 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 117 transitions. [2020-10-22 01:15:12,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-22 01:15:12,330 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 117 transitions. [2020-10-22 01:15:12,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-22 01:15:12,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:12,331 INFO L422 BasicCegarLoop]: trace histogram [26, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:15:12,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-22 01:15:12,543 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:15:12,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:12,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1070789512, now seen corresponding path program 23 times [2020-10-22 01:15:12,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:12,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804964010] [2020-10-22 01:15:12,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:13,102 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:13,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804964010] [2020-10-22 01:15:13,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377970755] [2020-10-22 01:15:13,103 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:13,526 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2020-10-22 01:15:13,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:13,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-22 01:15:13,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:13,558 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:13,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:13,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2020-10-22 01:15:13,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1731805533] [2020-10-22 01:15:13,559 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:13,567 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:13,582 INFO L252 McrAutomatonBuilder]: Finished intersection with 36 states and 35 transitions. [2020-10-22 01:15:13,582 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:13,582 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:13,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-22 01:15:13,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:13,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-22 01:15:13,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-10-22 01:15:13,584 INFO L87 Difference]: Start difference. First operand 71 states and 117 transitions. Second operand 29 states. [2020-10-22 01:15:13,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:13,636 INFO L93 Difference]: Finished difference Result 72 states and 118 transitions. [2020-10-22 01:15:13,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-22 01:15:13,637 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 35 [2020-10-22 01:15:13,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:13,637 INFO L225 Difference]: With dead ends: 72 [2020-10-22 01:15:13,638 INFO L226 Difference]: Without dead ends: 72 [2020-10-22 01:15:13,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-10-22 01:15:13,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-22 01:15:13,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-22 01:15:13,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-22 01:15:13,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 118 transitions. [2020-10-22 01:15:13,641 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 118 transitions. Word has length 35 [2020-10-22 01:15:13,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:13,641 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 118 transitions. [2020-10-22 01:15:13,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-22 01:15:13,642 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 118 transitions. [2020-10-22 01:15:13,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-22 01:15:13,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:13,642 INFO L422 BasicCegarLoop]: trace histogram [27, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:15:13,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-22 01:15:13,852 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:15:13,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:13,852 INFO L82 PathProgramCache]: Analyzing trace with hash 2067812944, now seen corresponding path program 24 times [2020-10-22 01:15:13,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:13,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290405777] [2020-10-22 01:15:13,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:14,323 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:14,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290405777] [2020-10-22 01:15:14,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63281738] [2020-10-22 01:15:14,324 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:31,006 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2020-10-22 01:15:31,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:31,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-22 01:15:31,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:31,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:31,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2020-10-22 01:15:31,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [894031357] [2020-10-22 01:15:31,176 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:31,185 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:31,199 INFO L252 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-10-22 01:15:31,200 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:31,200 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:31,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-22 01:15:31,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:31,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-22 01:15:31,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-10-22 01:15:31,201 INFO L87 Difference]: Start difference. First operand 72 states and 118 transitions. Second operand 30 states. [2020-10-22 01:15:31,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:31,249 INFO L93 Difference]: Finished difference Result 73 states and 119 transitions. [2020-10-22 01:15:31,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-22 01:15:31,250 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 36 [2020-10-22 01:15:31,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:31,250 INFO L225 Difference]: With dead ends: 73 [2020-10-22 01:15:31,251 INFO L226 Difference]: Without dead ends: 73 [2020-10-22 01:15:31,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-10-22 01:15:31,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-22 01:15:31,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-22 01:15:31,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-22 01:15:31,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 119 transitions. [2020-10-22 01:15:31,254 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 119 transitions. Word has length 36 [2020-10-22 01:15:31,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:31,254 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 119 transitions. [2020-10-22 01:15:31,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-22 01:15:31,254 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 119 transitions. [2020-10-22 01:15:31,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-22 01:15:31,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:31,255 INFO L422 BasicCegarLoop]: trace histogram [28, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:15:31,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:31,465 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:15:31,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:31,465 INFO L82 PathProgramCache]: Analyzing trace with hash 580241272, now seen corresponding path program 25 times [2020-10-22 01:15:31,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:31,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113760] [2020-10-22 01:15:31,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:32,062 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:32,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113760] [2020-10-22 01:15:32,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357162104] [2020-10-22 01:15:32,062 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:32,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjunts are in the unsatisfiable core [2020-10-22 01:15:32,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:32,154 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:32,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:32,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2020-10-22 01:15:32,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1875935144] [2020-10-22 01:15:32,155 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:32,164 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:32,179 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 37 transitions. [2020-10-22 01:15:32,179 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:32,180 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:32,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-22 01:15:32,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:32,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-22 01:15:32,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-10-22 01:15:32,181 INFO L87 Difference]: Start difference. First operand 73 states and 119 transitions. Second operand 31 states. [2020-10-22 01:15:32,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:32,235 INFO L93 Difference]: Finished difference Result 74 states and 120 transitions. [2020-10-22 01:15:32,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-22 01:15:32,236 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 37 [2020-10-22 01:15:32,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:32,236 INFO L225 Difference]: With dead ends: 74 [2020-10-22 01:15:32,237 INFO L226 Difference]: Without dead ends: 74 [2020-10-22 01:15:32,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-10-22 01:15:32,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-22 01:15:32,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-22 01:15:32,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-22 01:15:32,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 120 transitions. [2020-10-22 01:15:32,240 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 120 transitions. Word has length 37 [2020-10-22 01:15:32,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:32,240 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 120 transitions. [2020-10-22 01:15:32,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-22 01:15:32,240 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 120 transitions. [2020-10-22 01:15:32,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-22 01:15:32,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:32,241 INFO L422 BasicCegarLoop]: trace histogram [29, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:15:32,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:32,442 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:15:32,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:32,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1710159696, now seen corresponding path program 26 times [2020-10-22 01:15:32,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:32,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845381665] [2020-10-22 01:15:32,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:32,993 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:32,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845381665] [2020-10-22 01:15:32,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289511837] [2020-10-22 01:15:32,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:33,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:15:33,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:33,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 31 conjunts are in the unsatisfiable core [2020-10-22 01:15:33,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:33,101 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:33,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:33,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2020-10-22 01:15:33,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [36682180] [2020-10-22 01:15:33,102 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:33,110 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:33,129 INFO L252 McrAutomatonBuilder]: Finished intersection with 39 states and 38 transitions. [2020-10-22 01:15:33,129 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:33,130 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:33,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-22 01:15:33,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:33,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-22 01:15:33,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-10-22 01:15:33,132 INFO L87 Difference]: Start difference. First operand 74 states and 120 transitions. Second operand 32 states. [2020-10-22 01:15:33,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:33,180 INFO L93 Difference]: Finished difference Result 75 states and 121 transitions. [2020-10-22 01:15:33,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-22 01:15:33,181 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 38 [2020-10-22 01:15:33,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:33,181 INFO L225 Difference]: With dead ends: 75 [2020-10-22 01:15:33,181 INFO L226 Difference]: Without dead ends: 75 [2020-10-22 01:15:33,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-10-22 01:15:33,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-22 01:15:33,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-22 01:15:33,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-22 01:15:33,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 121 transitions. [2020-10-22 01:15:33,185 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 121 transitions. Word has length 38 [2020-10-22 01:15:33,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:33,186 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 121 transitions. [2020-10-22 01:15:33,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-22 01:15:33,186 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 121 transitions. [2020-10-22 01:15:33,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-22 01:15:33,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:33,186 INFO L422 BasicCegarLoop]: trace histogram [30, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:15:33,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:33,395 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:15:33,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:33,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1917074824, now seen corresponding path program 27 times [2020-10-22 01:15:33,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:33,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459351533] [2020-10-22 01:15:33,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:34,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459351533] [2020-10-22 01:15:34,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714630544] [2020-10-22 01:15:34,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:38,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-10-22 01:15:38,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:38,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 32 conjunts are in the unsatisfiable core [2020-10-22 01:15:38,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:38,797 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:38,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:38,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2020-10-22 01:15:38,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1474254873] [2020-10-22 01:15:38,798 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:38,806 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:38,826 INFO L252 McrAutomatonBuilder]: Finished intersection with 40 states and 39 transitions. [2020-10-22 01:15:38,826 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:38,827 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:38,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-22 01:15:38,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:38,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-22 01:15:38,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-10-22 01:15:38,828 INFO L87 Difference]: Start difference. First operand 75 states and 121 transitions. Second operand 33 states. [2020-10-22 01:15:38,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:38,878 INFO L93 Difference]: Finished difference Result 76 states and 122 transitions. [2020-10-22 01:15:38,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-22 01:15:38,879 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 39 [2020-10-22 01:15:38,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:38,882 INFO L225 Difference]: With dead ends: 76 [2020-10-22 01:15:38,882 INFO L226 Difference]: Without dead ends: 76 [2020-10-22 01:15:38,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-10-22 01:15:38,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-22 01:15:38,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-22 01:15:38,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-22 01:15:38,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 122 transitions. [2020-10-22 01:15:38,888 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 122 transitions. Word has length 39 [2020-10-22 01:15:38,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:38,889 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 122 transitions. [2020-10-22 01:15:38,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-22 01:15:38,889 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 122 transitions. [2020-10-22 01:15:38,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-22 01:15:38,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:38,889 INFO L422 BasicCegarLoop]: trace histogram [31, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:15:39,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-10-22 01:15:39,101 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:15:39,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:39,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1602772048, now seen corresponding path program 28 times [2020-10-22 01:15:39,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:39,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778055317] [2020-10-22 01:15:39,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:39,799 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:39,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778055317] [2020-10-22 01:15:39,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786514818] [2020-10-22 01:15:39,802 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:39,880 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:15:39,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:39,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 33 conjunts are in the unsatisfiable core [2020-10-22 01:15:39,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:39,908 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:39,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:39,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2020-10-22 01:15:39,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2036139859] [2020-10-22 01:15:39,909 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:39,947 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:39,967 INFO L252 McrAutomatonBuilder]: Finished intersection with 41 states and 40 transitions. [2020-10-22 01:15:39,967 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:39,968 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:39,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-22 01:15:39,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:39,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-22 01:15:39,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-10-22 01:15:39,969 INFO L87 Difference]: Start difference. First operand 76 states and 122 transitions. Second operand 34 states. [2020-10-22 01:15:40,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:40,024 INFO L93 Difference]: Finished difference Result 77 states and 123 transitions. [2020-10-22 01:15:40,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-22 01:15:40,025 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 40 [2020-10-22 01:15:40,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:40,025 INFO L225 Difference]: With dead ends: 77 [2020-10-22 01:15:40,026 INFO L226 Difference]: Without dead ends: 77 [2020-10-22 01:15:40,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-10-22 01:15:40,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-22 01:15:40,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-22 01:15:40,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-22 01:15:40,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 123 transitions. [2020-10-22 01:15:40,029 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 123 transitions. Word has length 40 [2020-10-22 01:15:40,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:40,029 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 123 transitions. [2020-10-22 01:15:40,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-22 01:15:40,029 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 123 transitions. [2020-10-22 01:15:40,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-22 01:15:40,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:40,030 INFO L422 BasicCegarLoop]: trace histogram [32, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:15:40,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:40,241 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:15:40,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:40,241 INFO L82 PathProgramCache]: Analyzing trace with hash -951124616, now seen corresponding path program 29 times [2020-10-22 01:15:40,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:40,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242933803] [2020-10-22 01:15:40,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:40,964 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:40,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242933803] [2020-10-22 01:15:40,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245673667] [2020-10-22 01:15:40,965 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:15:51,331 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2020-10-22 01:15:51,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:15:51,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 34 conjunts are in the unsatisfiable core [2020-10-22 01:15:51,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:15:51,430 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:51,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:15:51,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2020-10-22 01:15:51,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [451056517] [2020-10-22 01:15:51,431 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:15:51,440 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:15:51,464 INFO L252 McrAutomatonBuilder]: Finished intersection with 42 states and 41 transitions. [2020-10-22 01:15:51,464 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:15:51,465 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:15:51,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-22 01:15:51,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:15:51,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-22 01:15:51,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-10-22 01:15:51,467 INFO L87 Difference]: Start difference. First operand 77 states and 123 transitions. Second operand 35 states. [2020-10-22 01:15:51,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:15:51,528 INFO L93 Difference]: Finished difference Result 78 states and 124 transitions. [2020-10-22 01:15:51,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-22 01:15:51,530 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 41 [2020-10-22 01:15:51,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:15:51,531 INFO L225 Difference]: With dead ends: 78 [2020-10-22 01:15:51,531 INFO L226 Difference]: Without dead ends: 78 [2020-10-22 01:15:51,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-10-22 01:15:51,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-22 01:15:51,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-10-22 01:15:51,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-22 01:15:51,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 124 transitions. [2020-10-22 01:15:51,535 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 124 transitions. Word has length 41 [2020-10-22 01:15:51,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:15:51,536 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 124 transitions. [2020-10-22 01:15:51,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-22 01:15:51,536 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 124 transitions. [2020-10-22 01:15:51,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-22 01:15:51,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:15:51,537 INFO L422 BasicCegarLoop]: trace histogram [33, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:15:51,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-10-22 01:15:51,747 INFO L429 AbstractCegarLoop]: === Iteration 36 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:15:51,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:15:51,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1482457424, now seen corresponding path program 30 times [2020-10-22 01:15:51,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:15:51,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032253871] [2020-10-22 01:15:51,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:15:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:15:52,530 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:15:52,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032253871] [2020-10-22 01:15:52,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147117611] [2020-10-22 01:15:52,530 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:32,499 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2020-10-22 01:16:32,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:16:32,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 35 conjunts are in the unsatisfiable core [2020-10-22 01:16:32,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:16:32,975 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:16:32,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:16:32,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2020-10-22 01:16:32,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [668947590] [2020-10-22 01:16:32,976 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:32,986 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:33,009 INFO L252 McrAutomatonBuilder]: Finished intersection with 43 states and 42 transitions. [2020-10-22 01:16:33,010 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:16:33,010 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:16:33,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-22 01:16:33,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:33,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-22 01:16:33,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-10-22 01:16:33,012 INFO L87 Difference]: Start difference. First operand 78 states and 124 transitions. Second operand 36 states. [2020-10-22 01:16:33,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:16:33,076 INFO L93 Difference]: Finished difference Result 79 states and 125 transitions. [2020-10-22 01:16:33,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-22 01:16:33,077 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 42 [2020-10-22 01:16:33,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:16:33,078 INFO L225 Difference]: With dead ends: 79 [2020-10-22 01:16:33,078 INFO L226 Difference]: Without dead ends: 79 [2020-10-22 01:16:33,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-10-22 01:16:33,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-22 01:16:33,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-22 01:16:33,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-22 01:16:33,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 125 transitions. [2020-10-22 01:16:33,081 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 125 transitions. Word has length 42 [2020-10-22 01:16:33,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:16:33,081 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 125 transitions. [2020-10-22 01:16:33,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-22 01:16:33,081 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 125 transitions. [2020-10-22 01:16:33,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-22 01:16:33,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:33,082 INFO L422 BasicCegarLoop]: trace histogram [34, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:16:33,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:33,293 INFO L429 AbstractCegarLoop]: === Iteration 37 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:16:33,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:33,293 INFO L82 PathProgramCache]: Analyzing trace with hash -385910664, now seen corresponding path program 31 times [2020-10-22 01:16:33,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:33,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534098465] [2020-10-22 01:16:33,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:34,114 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:16:34,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534098465] [2020-10-22 01:16:34,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778515711] [2020-10-22 01:16:34,115 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:34,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 36 conjunts are in the unsatisfiable core [2020-10-22 01:16:34,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:16:34,222 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:16:34,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:16:34,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2020-10-22 01:16:34,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1111560451] [2020-10-22 01:16:34,224 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:34,234 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:34,254 INFO L252 McrAutomatonBuilder]: Finished intersection with 44 states and 43 transitions. [2020-10-22 01:16:34,254 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:16:34,255 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:16:34,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-22 01:16:34,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:34,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-22 01:16:34,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2020-10-22 01:16:34,257 INFO L87 Difference]: Start difference. First operand 79 states and 125 transitions. Second operand 37 states. [2020-10-22 01:16:34,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:16:34,328 INFO L93 Difference]: Finished difference Result 80 states and 126 transitions. [2020-10-22 01:16:34,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-22 01:16:34,332 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 43 [2020-10-22 01:16:34,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:16:34,333 INFO L225 Difference]: With dead ends: 80 [2020-10-22 01:16:34,333 INFO L226 Difference]: Without dead ends: 80 [2020-10-22 01:16:34,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2020-10-22 01:16:34,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-22 01:16:34,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-22 01:16:34,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-22 01:16:34,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 126 transitions. [2020-10-22 01:16:34,339 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 126 transitions. Word has length 43 [2020-10-22 01:16:34,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:16:34,339 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 126 transitions. [2020-10-22 01:16:34,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-22 01:16:34,339 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 126 transitions. [2020-10-22 01:16:34,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-22 01:16:34,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:34,343 INFO L422 BasicCegarLoop]: trace histogram [35, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:16:34,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-22 01:16:34,556 INFO L429 AbstractCegarLoop]: === Iteration 38 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:16:34,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:34,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1824220752, now seen corresponding path program 32 times [2020-10-22 01:16:34,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:34,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391052026] [2020-10-22 01:16:34,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:35,373 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:16:35,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391052026] [2020-10-22 01:16:35,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572230995] [2020-10-22 01:16:35,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:35,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:16:35,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:16:35,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 37 conjunts are in the unsatisfiable core [2020-10-22 01:16:35,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:16:35,477 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:16:35,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:16:35,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2020-10-22 01:16:35,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1202597512] [2020-10-22 01:16:35,478 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:35,488 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:35,513 INFO L252 McrAutomatonBuilder]: Finished intersection with 45 states and 44 transitions. [2020-10-22 01:16:35,513 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:16:35,514 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:16:35,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-22 01:16:35,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:35,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-22 01:16:35,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-10-22 01:16:35,518 INFO L87 Difference]: Start difference. First operand 80 states and 126 transitions. Second operand 38 states. [2020-10-22 01:16:35,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:16:35,575 INFO L93 Difference]: Finished difference Result 81 states and 127 transitions. [2020-10-22 01:16:35,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-22 01:16:35,575 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 44 [2020-10-22 01:16:35,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:16:35,576 INFO L225 Difference]: With dead ends: 81 [2020-10-22 01:16:35,576 INFO L226 Difference]: Without dead ends: 81 [2020-10-22 01:16:35,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-10-22 01:16:35,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-22 01:16:35,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-22 01:16:35,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-22 01:16:35,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 127 transitions. [2020-10-22 01:16:35,580 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 127 transitions. Word has length 44 [2020-10-22 01:16:35,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:16:35,580 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 127 transitions. [2020-10-22 01:16:35,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-22 01:16:35,580 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 127 transitions. [2020-10-22 01:16:35,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-22 01:16:35,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:35,581 INFO L422 BasicCegarLoop]: trace histogram [36, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:16:35,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-10-22 01:16:35,792 INFO L429 AbstractCegarLoop]: === Iteration 39 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:16:35,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:35,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1618817912, now seen corresponding path program 33 times [2020-10-22 01:16:35,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:35,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048628143] [2020-10-22 01:16:35,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:36,829 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:16:36,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048628143] [2020-10-22 01:16:36,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252416608] [2020-10-22 01:16:36,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:41,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2020-10-22 01:16:41,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:16:41,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 38 conjunts are in the unsatisfiable core [2020-10-22 01:16:41,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:16:41,794 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:16:41,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:16:41,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2020-10-22 01:16:41,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1699246064] [2020-10-22 01:16:41,795 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:41,805 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:41,832 INFO L252 McrAutomatonBuilder]: Finished intersection with 46 states and 45 transitions. [2020-10-22 01:16:41,832 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:16:41,833 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:16:41,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-22 01:16:41,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:41,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-22 01:16:41,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-10-22 01:16:41,834 INFO L87 Difference]: Start difference. First operand 81 states and 127 transitions. Second operand 39 states. [2020-10-22 01:16:41,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:16:41,901 INFO L93 Difference]: Finished difference Result 82 states and 128 transitions. [2020-10-22 01:16:41,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-22 01:16:41,901 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 45 [2020-10-22 01:16:41,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:16:41,903 INFO L225 Difference]: With dead ends: 82 [2020-10-22 01:16:41,903 INFO L226 Difference]: Without dead ends: 82 [2020-10-22 01:16:41,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-10-22 01:16:41,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-22 01:16:41,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-22 01:16:41,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-22 01:16:41,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 128 transitions. [2020-10-22 01:16:41,906 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 128 transitions. Word has length 45 [2020-10-22 01:16:41,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:16:41,907 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 128 transitions. [2020-10-22 01:16:41,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-22 01:16:41,907 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 128 transitions. [2020-10-22 01:16:41,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-22 01:16:41,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:41,911 INFO L422 BasicCegarLoop]: trace histogram [37, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:16:42,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-22 01:16:42,121 INFO L429 AbstractCegarLoop]: === Iteration 40 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:16:42,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:42,122 INFO L82 PathProgramCache]: Analyzing trace with hash -453702832, now seen corresponding path program 34 times [2020-10-22 01:16:42,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:42,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604701013] [2020-10-22 01:16:42,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:43,063 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:16:43,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604701013] [2020-10-22 01:16:43,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899016294] [2020-10-22 01:16:43,064 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:16:43,156 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 01:16:43,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:16:43,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 39 conjunts are in the unsatisfiable core [2020-10-22 01:16:43,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:16:43,181 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:16:43,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:16:43,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2020-10-22 01:16:43,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [666303349] [2020-10-22 01:16:43,182 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:16:43,195 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:16:43,223 INFO L252 McrAutomatonBuilder]: Finished intersection with 47 states and 46 transitions. [2020-10-22 01:16:43,223 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:16:43,224 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:16:43,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-22 01:16:43,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:16:43,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-22 01:16:43,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-10-22 01:16:43,226 INFO L87 Difference]: Start difference. First operand 82 states and 128 transitions. Second operand 40 states. [2020-10-22 01:16:43,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:16:43,290 INFO L93 Difference]: Finished difference Result 83 states and 129 transitions. [2020-10-22 01:16:43,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-22 01:16:43,291 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 46 [2020-10-22 01:16:43,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:16:43,292 INFO L225 Difference]: With dead ends: 83 [2020-10-22 01:16:43,292 INFO L226 Difference]: Without dead ends: 83 [2020-10-22 01:16:43,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-10-22 01:16:43,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-22 01:16:43,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-22 01:16:43,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-22 01:16:43,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 129 transitions. [2020-10-22 01:16:43,295 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 129 transitions. Word has length 46 [2020-10-22 01:16:43,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:16:43,296 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 129 transitions. [2020-10-22 01:16:43,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-22 01:16:43,296 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 129 transitions. [2020-10-22 01:16:43,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-22 01:16:43,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:16:43,297 INFO L422 BasicCegarLoop]: trace histogram [38, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:16:43,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-22 01:16:43,507 INFO L429 AbstractCegarLoop]: === Iteration 41 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:16:43,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:16:43,508 INFO L82 PathProgramCache]: Analyzing trace with hash -277336456, now seen corresponding path program 35 times [2020-10-22 01:16:43,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:16:43,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269580246] [2020-10-22 01:16:43,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:16:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:16:44,521 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:16:44,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269580246] [2020-10-22 01:16:44,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910192670] [2020-10-22 01:16:44,522 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:17:09,931 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2020-10-22 01:17:09,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:17:10,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 40 conjunts are in the unsatisfiable core [2020-10-22 01:17:10,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:17:10,384 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:17:10,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:17:10,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2020-10-22 01:17:10,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [756450318] [2020-10-22 01:17:10,385 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:17:10,399 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:17:10,436 INFO L252 McrAutomatonBuilder]: Finished intersection with 48 states and 47 transitions. [2020-10-22 01:17:10,436 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:17:10,437 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:17:10,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-22 01:17:10,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:17:10,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-22 01:17:10,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2020-10-22 01:17:10,439 INFO L87 Difference]: Start difference. First operand 83 states and 129 transitions. Second operand 41 states. [2020-10-22 01:17:10,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:17:10,505 INFO L93 Difference]: Finished difference Result 84 states and 130 transitions. [2020-10-22 01:17:10,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-22 01:17:10,506 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 47 [2020-10-22 01:17:10,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:17:10,507 INFO L225 Difference]: With dead ends: 84 [2020-10-22 01:17:10,507 INFO L226 Difference]: Without dead ends: 84 [2020-10-22 01:17:10,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2020-10-22 01:17:10,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-22 01:17:10,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-22 01:17:10,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-22 01:17:10,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 130 transitions. [2020-10-22 01:17:10,510 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 130 transitions. Word has length 47 [2020-10-22 01:17:10,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:17:10,510 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 130 transitions. [2020-10-22 01:17:10,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-22 01:17:10,511 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 130 transitions. [2020-10-22 01:17:10,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-22 01:17:10,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:17:10,511 INFO L422 BasicCegarLoop]: trace histogram [39, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:17:10,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:17:10,712 INFO L429 AbstractCegarLoop]: === Iteration 42 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:17:10,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:17:10,713 INFO L82 PathProgramCache]: Analyzing trace with hash 895053904, now seen corresponding path program 36 times [2020-10-22 01:17:10,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:17:10,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325531776] [2020-10-22 01:17:10,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:17:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:17:11,994 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:17:11,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325531776] [2020-10-22 01:17:11,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175961520] [2020-10-22 01:17:11,995 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:18:31,387 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2020-10-22 01:18:31,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:18:33,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 41 conjunts are in the unsatisfiable core [2020-10-22 01:18:33,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:33,121 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:18:33,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:18:33,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2020-10-22 01:18:33,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [263951025] [2020-10-22 01:18:33,122 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:33,131 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:33,159 INFO L252 McrAutomatonBuilder]: Finished intersection with 49 states and 48 transitions. [2020-10-22 01:18:33,159 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:33,159 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:33,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-22 01:18:33,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:33,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-22 01:18:33,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-10-22 01:18:33,161 INFO L87 Difference]: Start difference. First operand 84 states and 130 transitions. Second operand 42 states. [2020-10-22 01:18:33,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:33,230 INFO L93 Difference]: Finished difference Result 85 states and 131 transitions. [2020-10-22 01:18:33,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-22 01:18:33,231 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 48 [2020-10-22 01:18:33,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:33,231 INFO L225 Difference]: With dead ends: 85 [2020-10-22 01:18:33,232 INFO L226 Difference]: Without dead ends: 85 [2020-10-22 01:18:33,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-10-22 01:18:33,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-22 01:18:33,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-22 01:18:33,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-22 01:18:33,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 131 transitions. [2020-10-22 01:18:33,235 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 131 transitions. Word has length 48 [2020-10-22 01:18:33,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:33,235 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 131 transitions. [2020-10-22 01:18:33,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-22 01:18:33,236 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 131 transitions. [2020-10-22 01:18:33,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-22 01:18:33,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:33,236 INFO L422 BasicCegarLoop]: trace histogram [40, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:18:33,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-10-22 01:18:33,437 INFO L429 AbstractCegarLoop]: === Iteration 43 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:18:33,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:33,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1415550600, now seen corresponding path program 37 times [2020-10-22 01:18:33,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:33,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605254425] [2020-10-22 01:18:33,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:34,930 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:18:34,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605254425] [2020-10-22 01:18:34,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376445000] [2020-10-22 01:18:34,931 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:18:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:35,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 42 conjunts are in the unsatisfiable core [2020-10-22 01:18:35,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:35,051 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:18:35,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:18:35,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2020-10-22 01:18:35,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1014367489] [2020-10-22 01:18:35,052 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:35,061 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:35,099 INFO L252 McrAutomatonBuilder]: Finished intersection with 50 states and 49 transitions. [2020-10-22 01:18:35,099 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:35,100 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:35,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-22 01:18:35,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:35,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-22 01:18:35,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-10-22 01:18:35,101 INFO L87 Difference]: Start difference. First operand 85 states and 131 transitions. Second operand 43 states. [2020-10-22 01:18:35,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:35,179 INFO L93 Difference]: Finished difference Result 86 states and 132 transitions. [2020-10-22 01:18:35,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-22 01:18:35,180 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 49 [2020-10-22 01:18:35,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:35,180 INFO L225 Difference]: With dead ends: 86 [2020-10-22 01:18:35,180 INFO L226 Difference]: Without dead ends: 86 [2020-10-22 01:18:35,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-10-22 01:18:35,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-22 01:18:35,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-10-22 01:18:35,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-22 01:18:35,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 132 transitions. [2020-10-22 01:18:35,184 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 132 transitions. Word has length 49 [2020-10-22 01:18:35,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:35,184 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 132 transitions. [2020-10-22 01:18:35,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-22 01:18:35,185 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 132 transitions. [2020-10-22 01:18:35,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-22 01:18:35,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:35,185 INFO L422 BasicCegarLoop]: trace histogram [41, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:18:35,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:18:35,396 INFO L429 AbstractCegarLoop]: === Iteration 44 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:18:35,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:35,396 INFO L82 PathProgramCache]: Analyzing trace with hash -29846192, now seen corresponding path program 38 times [2020-10-22 01:18:35,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:35,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967337104] [2020-10-22 01:18:35,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:36,602 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:18:36,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967337104] [2020-10-22 01:18:36,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934457878] [2020-10-22 01:18:36,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:18:36,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:18:36,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:18:36,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 43 conjunts are in the unsatisfiable core [2020-10-22 01:18:36,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:18:36,720 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:18:36,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:18:36,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2020-10-22 01:18:36,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1752440851] [2020-10-22 01:18:36,721 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:36,730 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:36,769 INFO L252 McrAutomatonBuilder]: Finished intersection with 51 states and 50 transitions. [2020-10-22 01:18:36,769 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:36,770 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:36,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-22 01:18:36,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:36,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-22 01:18:36,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-10-22 01:18:36,772 INFO L87 Difference]: Start difference. First operand 86 states and 132 transitions. Second operand 44 states. [2020-10-22 01:18:36,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:36,848 INFO L93 Difference]: Finished difference Result 87 states and 133 transitions. [2020-10-22 01:18:36,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-22 01:18:36,849 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 50 [2020-10-22 01:18:36,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:36,850 INFO L225 Difference]: With dead ends: 87 [2020-10-22 01:18:36,850 INFO L226 Difference]: Without dead ends: 87 [2020-10-22 01:18:36,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-10-22 01:18:36,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-22 01:18:36,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-22 01:18:36,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-22 01:18:36,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 133 transitions. [2020-10-22 01:18:36,854 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 133 transitions. Word has length 50 [2020-10-22 01:18:36,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:36,854 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 133 transitions. [2020-10-22 01:18:36,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-22 01:18:36,854 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 133 transitions. [2020-10-22 01:18:36,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-22 01:18:36,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:36,855 INFO L422 BasicCegarLoop]: trace histogram [42, 2, 2, 1, 1, 1, 1, 1] [2020-10-22 01:18:37,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:18:37,066 INFO L429 AbstractCegarLoop]: === Iteration 45 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 01:18:37,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:37,066 INFO L82 PathProgramCache]: Analyzing trace with hash -22682504, now seen corresponding path program 39 times [2020-10-22 01:18:37,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:37,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069014736] [2020-10-22 01:18:37,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:38,348 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 01:18:38,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069014736] [2020-10-22 01:18:38,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561607925] [2020-10-22 01:18:38,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown