/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-WP.epf -i ../../../trunk/examples/svcomp/pthread/indexer.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:25:59,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:25:59,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:25:59,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:25:59,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:25:59,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:25:59,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:25:59,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:25:59,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:25:59,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:25:59,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:25:59,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:25:59,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:25:59,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:25:59,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:25:59,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:25:59,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:25:59,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:25:59,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:25:59,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:25:59,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:25:59,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:25:59,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:25:59,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:25:59,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 12:25:59,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 12:25:59,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 12:25:59,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 12:25:59,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 12:25:59,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 12:25:59,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:25:59,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:25:59,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:25:59,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:25:59,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:25:59,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:25:59,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:25:59,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:25:59,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:25:59,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:25:59,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:25:59,498 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 12:25:59,520 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:25:59,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:25:59,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:25:59,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:25:59,522 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:25:59,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:25:59,522 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:25:59,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:25:59,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:25:59,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:25:59,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:25:59,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:25:59,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:25:59,523 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:25:59,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:25:59,524 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:25:59,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:25:59,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:25:59,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:25:59,524 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:25:59,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:25:59,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:25:59,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:25:59,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:25:59,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:25:59,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:25:59,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:25:59,526 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 12:25:59,526 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:25:59,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:25:59,527 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 12:25:59,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:25:59,889 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:25:59,893 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:25:59,895 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:25:59,897 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:25:59,900 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/indexer.i [2020-10-16 12:25:59,972 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e71392063/1ccdcd4741d84210a43d14f3429c519b/FLAG28763fc42 [2020-10-16 12:26:00,506 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:26:00,507 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread/indexer.i [2020-10-16 12:26:00,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e71392063/1ccdcd4741d84210a43d14f3429c519b/FLAG28763fc42 [2020-10-16 12:26:00,798 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e71392063/1ccdcd4741d84210a43d14f3429c519b [2020-10-16 12:26:00,806 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:26:00,808 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:26:00,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:26:00,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:26:00,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:26:00,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:26:00" (1/1) ... [2020-10-16 12:26:00,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17f1cf33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:00, skipping insertion in model container [2020-10-16 12:26:00,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:26:00" (1/1) ... [2020-10-16 12:26:00,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:26:00,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:26:01,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:26:01,564 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:26:01,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:26:01,771 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:26:01,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01 WrapperNode [2020-10-16 12:26:01,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:26:01,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:26:01,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:26:01,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:26:01,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:26:01,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:26:01,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:26:01,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:26:01,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... [2020-10-16 12:26:01,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:26:01,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:26:01,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:26:01,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:26:01,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:01,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:26:01,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:26:01,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 12:26:01,956 INFO L130 BoogieDeclarations]: Found specification of procedure thread_routine [2020-10-16 12:26:01,956 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_routine [2020-10-16 12:26:01,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:26:01,957 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-16 12:26:01,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:26:01,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:26:01,959 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:26:02,400 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:26:02,400 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-16 12:26:02,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:26:02 BoogieIcfgContainer [2020-10-16 12:26:02,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:26:02,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:26:02,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:26:02,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:26:02,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:26:00" (1/3) ... [2020-10-16 12:26:02,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4c0e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:26:02, skipping insertion in model container [2020-10-16 12:26:02,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:26:01" (2/3) ... [2020-10-16 12:26:02,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4c0e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:26:02, skipping insertion in model container [2020-10-16 12:26:02,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:26:02" (3/3) ... [2020-10-16 12:26:02,413 INFO L111 eAbstractionObserver]: Analyzing ICFG indexer.i [2020-10-16 12:26:02,426 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:26:02,427 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:26:02,435 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 12:26:02,436 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:26:02,471 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,472 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,472 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,472 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,473 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,473 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,473 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,473 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,474 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,474 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,474 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,474 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,475 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,475 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,475 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,476 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,476 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,476 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,476 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,477 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,477 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,477 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,477 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,477 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,478 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,478 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,478 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,478 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,479 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,479 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,479 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,480 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,480 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,480 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,480 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,480 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,481 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,481 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,481 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,482 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,482 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,482 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,482 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,482 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,483 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,483 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,483 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,483 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,484 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,484 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,484 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,484 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,485 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,485 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,485 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,485 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,486 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,486 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,486 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,487 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,487 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,487 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,487 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,488 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,488 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,488 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,488 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,489 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,489 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,489 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,489 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,490 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,490 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,490 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,490 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,491 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,491 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,491 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,491 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,492 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,492 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,492 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,492 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,493 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,493 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,493 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,493 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,499 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,500 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,500 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,530 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,530 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,530 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,530 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,530 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,531 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,531 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,531 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,531 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,531 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,532 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,532 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,532 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,532 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,532 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,533 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,533 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,533 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,533 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,533 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,534 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,534 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:26:02,542 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-10-16 12:26:02,556 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 12:26:02,578 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:26:02,578 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:26:02,578 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:26:02,578 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:26:02,578 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:26:02,578 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:26:02,579 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:26:02,579 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:26:02,593 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:26:02,594 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 105 transitions, 218 flow [2020-10-16 12:26:02,597 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 105 transitions, 218 flow [2020-10-16 12:26:02,599 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 94 places, 105 transitions, 218 flow [2020-10-16 12:26:02,663 INFO L129 PetriNetUnfolder]: 18/126 cut-off events. [2020-10-16 12:26:02,664 INFO L130 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2020-10-16 12:26:02,676 INFO L80 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 126 events. 18/126 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 204 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 76. Up to 4 conditions per place. [2020-10-16 12:26:02,682 INFO L117 LiptonReduction]: Number of co-enabled transitions 2652 [2020-10-16 12:26:04,606 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-10-16 12:26:04,765 INFO L132 LiptonReduction]: Checked pairs total: 2598 [2020-10-16 12:26:04,765 INFO L134 LiptonReduction]: Total number of compositions: 97 [2020-10-16 12:26:04,771 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 25 transitions, 58 flow [2020-10-16 12:26:04,783 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 73 states. [2020-10-16 12:26:04,786 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-10-16 12:26:04,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-16 12:26:04,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:04,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:04,793 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:26:04,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:04,799 INFO L82 PathProgramCache]: Analyzing trace with hash -734709978, now seen corresponding path program 1 times [2020-10-16 12:26:04,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:04,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394892198] [2020-10-16 12:26:04,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:05,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:05,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394892198] [2020-10-16 12:26:05,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:26:05,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:26:05,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [886483274] [2020-10-16 12:26:05,004 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:05,009 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:05,028 INFO L258 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-10-16 12:26:05,028 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:05,035 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:05,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:26:05,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:05,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:26:05,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:26:05,050 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2020-10-16 12:26:05,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:05,098 INFO L93 Difference]: Finished difference Result 61 states and 119 transitions. [2020-10-16 12:26:05,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:26:05,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-16 12:26:05,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:05,110 INFO L225 Difference]: With dead ends: 61 [2020-10-16 12:26:05,110 INFO L226 Difference]: Without dead ends: 53 [2020-10-16 12:26:05,112 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 [2020-10-16 12:26:05,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-16 12:26:05,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-16 12:26:05,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-16 12:26:05,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 108 transitions. [2020-10-16 12:26:05,154 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 108 transitions. Word has length 7 [2020-10-16 12:26:05,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:05,155 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 108 transitions. [2020-10-16 12:26:05,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:26:05,155 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 108 transitions. [2020-10-16 12:26:05,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:26:05,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:05,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:05,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:26:05,157 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:26:05,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:05,157 INFO L82 PathProgramCache]: Analyzing trace with hash 654852975, now seen corresponding path program 1 times [2020-10-16 12:26:05,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:05,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489190896] [2020-10-16 12:26:05,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:05,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:05,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489190896] [2020-10-16 12:26:05,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407882303] [2020-10-16 12:26:05,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:05,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-16 12:26:05,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:05,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:05,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:26:05,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-10-16 12:26:05,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1620122865] [2020-10-16 12:26:05,334 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:05,335 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:05,338 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 12:26:05,338 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:05,339 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:05,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:26:05,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:05,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:26:05,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:26:05,340 INFO L87 Difference]: Start difference. First operand 53 states and 108 transitions. Second operand 4 states. [2020-10-16 12:26:05,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:26:05,371 INFO L93 Difference]: Finished difference Result 42 states and 81 transitions. [2020-10-16 12:26:05,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:26:05,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-16 12:26:05,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:26:05,373 INFO L225 Difference]: With dead ends: 42 [2020-10-16 12:26:05,373 INFO L226 Difference]: Without dead ends: 42 [2020-10-16 12:26:05,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:26:05,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-16 12:26:05,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-16 12:26:05,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-16 12:26:05,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 81 transitions. [2020-10-16 12:26:05,380 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 81 transitions. Word has length 8 [2020-10-16 12:26:05,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:26:05,381 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 81 transitions. [2020-10-16 12:26:05,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:26:05,381 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 81 transitions. [2020-10-16 12:26:05,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:26:05,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:26:05,382 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:26:05,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-16 12:26:05,596 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:26:05,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:26:05,597 INFO L82 PathProgramCache]: Analyzing trace with hash 781631558, now seen corresponding path program 2 times [2020-10-16 12:26:05,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:26:05,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085800442] [2020-10-16 12:26:05,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:26:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:26:05,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:26:05,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085800442] [2020-10-16 12:26:05,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10367215] [2020-10-16 12:26:05,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:26:05,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-16 12:26:05,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:26:05,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-16 12:26:05,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:26:05,770 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 63 treesize of output 59 [2020-10-16 12:26:05,773 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 12:26:05,801 INFO L625 ElimStorePlain]: treesize reduction 40, result has 24.5 percent of original size [2020-10-16 12:26:05,804 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-16 12:26:05,804 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:4 [2020-10-16 12:26:05,829 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 [2020-10-16 12:26:05,830 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 12:26:05,835 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 12:26:05,836 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 12:26:05,836 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2020-10-16 12:26:05,867 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 [2020-10-16 12:26:05,868 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 12:26:05,874 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 12:26:05,877 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. [2020-10-16 12:26:05,877 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:27 [2020-10-16 12:26:05,949 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 [2020-10-16 12:26:05,953 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 12:26:05,958 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 12:26:05,959 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 12:26:05,959 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:37, output treesize:7 [2020-10-16 12:26:05,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:26:05,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-16 12:26:05,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 10 [2020-10-16 12:26:05,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1703063506] [2020-10-16 12:26:05,994 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:26:05,995 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:26:05,997 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-16 12:26:05,997 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:26:05,998 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:26:05,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:26:05,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:26:05,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:26:05,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-16 12:26:05,999 INFO L87 Difference]: Start difference. First operand 42 states and 81 transitions. Second operand 8 states. [2020-10-16 12:26:14,141 WARN L193 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-10-16 12:26:22,214 WARN L193 SmtUtils]: Spent 8.05 s on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-16 12:26:36,380 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 33 [2020-10-16 12:26:42,436 WARN L193 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 39 [2020-10-16 12:27:01,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:01,291 INFO L93 Difference]: Finished difference Result 102 states and 207 transitions. [2020-10-16 12:27:01,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:27:01,293 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-10-16 12:27:01,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:01,299 INFO L225 Difference]: With dead ends: 102 [2020-10-16 12:27:01,300 INFO L226 Difference]: Without dead ends: 102 [2020-10-16 12:27:01,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 34.5s TimeCoverageRelationStatistics Valid=112, Invalid=302, Unknown=6, NotChecked=0, Total=420 [2020-10-16 12:27:01,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-16 12:27:01,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 52. [2020-10-16 12:27:01,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-16 12:27:01,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 106 transitions. [2020-10-16 12:27:01,317 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 106 transitions. Word has length 9 [2020-10-16 12:27:01,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:01,318 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 106 transitions. [2020-10-16 12:27:01,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:27:01,318 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 106 transitions. [2020-10-16 12:27:01,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:27:01,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:01,319 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:01,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:01,522 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:01,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:01,523 INFO L82 PathProgramCache]: Analyzing trace with hash -472215434, now seen corresponding path program 1 times [2020-10-16 12:27:01,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:01,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612964931] [2020-10-16 12:27:01,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:01,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 12:27:01,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612964931] [2020-10-16 12:27:01,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123587060] [2020-10-16 12:27:01,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:01,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-16 12:27:01,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:01,697 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 12:27:01,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:01,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-16 12:27:01,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [797880388] [2020-10-16 12:27:01,698 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:01,700 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:01,701 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-10-16 12:27:01,702 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:01,702 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:01,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:27:01,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:01,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:27:01,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:27:01,703 INFO L87 Difference]: Start difference. First operand 52 states and 106 transitions. Second operand 5 states. [2020-10-16 12:27:01,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:01,729 INFO L93 Difference]: Finished difference Result 53 states and 107 transitions. [2020-10-16 12:27:01,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:27:01,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-16 12:27:01,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:01,731 INFO L225 Difference]: With dead ends: 53 [2020-10-16 12:27:01,732 INFO L226 Difference]: Without dead ends: 53 [2020-10-16 12:27:01,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:27:01,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-16 12:27:01,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-16 12:27:01,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-16 12:27:01,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 107 transitions. [2020-10-16 12:27:01,738 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 107 transitions. Word has length 11 [2020-10-16 12:27:01,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:01,739 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 107 transitions. [2020-10-16 12:27:01,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:27:01,739 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 107 transitions. [2020-10-16 12:27:01,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:27:01,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:01,740 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:01,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:01,954 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:01,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:01,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1112297535, now seen corresponding path program 2 times [2020-10-16 12:27:01,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:01,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421805942] [2020-10-16 12:27:01,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:02,013 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 12:27:02,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421805942] [2020-10-16 12:27:02,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027511713] [2020-10-16 12:27:02,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:02,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:02,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:02,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-16 12:27:02,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:02,116 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 12:27:02,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:02,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 12:27:02,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1787528945] [2020-10-16 12:27:02,117 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:02,119 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:02,121 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-10-16 12:27:02,121 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:02,121 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:02,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:27:02,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:02,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:27:02,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2020-10-16 12:27:02,123 INFO L87 Difference]: Start difference. First operand 53 states and 107 transitions. Second operand 6 states. [2020-10-16 12:27:02,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:02,154 INFO L93 Difference]: Finished difference Result 54 states and 108 transitions. [2020-10-16 12:27:02,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:27:02,155 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-16 12:27:02,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:02,156 INFO L225 Difference]: With dead ends: 54 [2020-10-16 12:27:02,156 INFO L226 Difference]: Without dead ends: 54 [2020-10-16 12:27:02,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2020-10-16 12:27:02,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-16 12:27:02,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-16 12:27:02,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-16 12:27:02,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 108 transitions. [2020-10-16 12:27:02,163 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 108 transitions. Word has length 12 [2020-10-16 12:27:02,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:02,163 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 108 transitions. [2020-10-16 12:27:02,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:27:02,163 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 108 transitions. [2020-10-16 12:27:02,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:27:02,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:02,164 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:27:02,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:02,378 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:02,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:02,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1307407978, now seen corresponding path program 3 times [2020-10-16 12:27:02,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:02,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8202389] [2020-10-16 12:27:02,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:02,445 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 12:27:02,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8202389] [2020-10-16 12:27:02,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298815511] [2020-10-16 12:27:02,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:02,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 12:27:02,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:02,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-16 12:27:02,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:02,590 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 [2020-10-16 12:27:02,590 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 12:27:02,594 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 12:27:02,595 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 12:27:02,595 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:7 [2020-10-16 12:27:02,612 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 [2020-10-16 12:27:02,613 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 12:27:02,617 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 12:27:02,618 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 12:27:02,618 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:18, output treesize:7 [2020-10-16 12:27:02,630 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 12:27:02,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-16 12:27:02,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 12 [2020-10-16 12:27:02,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [52677036] [2020-10-16 12:27:02,631 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:02,633 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:02,635 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-16 12:27:02,635 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:02,636 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:02,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:27:02,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:02,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:27:02,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:27:02,637 INFO L87 Difference]: Start difference. First operand 54 states and 108 transitions. Second operand 7 states. [2020-10-16 12:27:02,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:02,807 INFO L93 Difference]: Finished difference Result 74 states and 150 transitions. [2020-10-16 12:27:02,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 12:27:02,807 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-16 12:27:02,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:02,808 INFO L225 Difference]: With dead ends: 74 [2020-10-16 12:27:02,809 INFO L226 Difference]: Without dead ends: 74 [2020-10-16 12:27:02,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:27:02,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-16 12:27:02,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 49. [2020-10-16 12:27:02,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-16 12:27:02,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 95 transitions. [2020-10-16 12:27:02,815 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 95 transitions. Word has length 13 [2020-10-16 12:27:02,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:02,815 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 95 transitions. [2020-10-16 12:27:02,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:27:02,815 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 95 transitions. [2020-10-16 12:27:02,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:27:02,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:02,816 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:03,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-16 12:27:03,031 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:03,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:03,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1307414801, now seen corresponding path program 1 times [2020-10-16 12:27:03,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:03,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109174346] [2020-10-16 12:27:03,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:03,087 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:03,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109174346] [2020-10-16 12:27:03,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110812596] [2020-10-16 12:27:03,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:03,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 12:27:03,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:03,189 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:03,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:03,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-10-16 12:27:03,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [330005760] [2020-10-16 12:27:03,190 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:03,192 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:03,193 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-16 12:27:03,194 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:03,194 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:03,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:27:03,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:03,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:27:03,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:27:03,196 INFO L87 Difference]: Start difference. First operand 49 states and 95 transitions. Second operand 7 states. [2020-10-16 12:27:03,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:03,229 INFO L93 Difference]: Finished difference Result 50 states and 96 transitions. [2020-10-16 12:27:03,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:27:03,235 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-16 12:27:03,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:03,236 INFO L225 Difference]: With dead ends: 50 [2020-10-16 12:27:03,236 INFO L226 Difference]: Without dead ends: 50 [2020-10-16 12:27:03,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:27:03,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-16 12:27:03,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-16 12:27:03,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-16 12:27:03,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 96 transitions. [2020-10-16 12:27:03,241 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 96 transitions. Word has length 13 [2020-10-16 12:27:03,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:03,241 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 96 transitions. [2020-10-16 12:27:03,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:27:03,242 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 96 transitions. [2020-10-16 12:27:03,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:27:03,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:03,242 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:03,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:03,453 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:03,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:03,453 INFO L82 PathProgramCache]: Analyzing trace with hash 991125624, now seen corresponding path program 2 times [2020-10-16 12:27:03,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:03,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143882419] [2020-10-16 12:27:03,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:03,548 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:03,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143882419] [2020-10-16 12:27:03,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074085250] [2020-10-16 12:27:03,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:03,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:03,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:03,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 12:27:03,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:03,659 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:03,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:03,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 12:27:03,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [699100958] [2020-10-16 12:27:03,660 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:03,662 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:03,666 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 14 transitions. [2020-10-16 12:27:03,666 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:03,667 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:03,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:27:03,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:03,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:27:03,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=47, Unknown=0, NotChecked=0, Total=90 [2020-10-16 12:27:03,669 INFO L87 Difference]: Start difference. First operand 50 states and 96 transitions. Second operand 8 states. [2020-10-16 12:27:03,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:03,693 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2020-10-16 12:27:03,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 12:27:03,694 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-16 12:27:03,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:03,695 INFO L225 Difference]: With dead ends: 51 [2020-10-16 12:27:03,695 INFO L226 Difference]: Without dead ends: 51 [2020-10-16 12:27:03,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=47, Unknown=0, NotChecked=0, Total=90 [2020-10-16 12:27:03,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-16 12:27:03,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-16 12:27:03,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-16 12:27:03,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 97 transitions. [2020-10-16 12:27:03,708 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 97 transitions. Word has length 14 [2020-10-16 12:27:03,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:03,709 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 97 transitions. [2020-10-16 12:27:03,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:27:03,709 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 97 transitions. [2020-10-16 12:27:03,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:27:03,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:03,710 INFO L422 BasicCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:03,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:03,926 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:03,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:03,926 INFO L82 PathProgramCache]: Analyzing trace with hash -768565233, now seen corresponding path program 3 times [2020-10-16 12:27:03,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:03,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342865650] [2020-10-16 12:27:03,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:04,011 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:04,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342865650] [2020-10-16 12:27:04,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886591603] [2020-10-16 12:27:04,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:04,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 12:27:04,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:04,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 12:27:04,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:04,111 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:04,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:04,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-10-16 12:27:04,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [441036492] [2020-10-16 12:27:04,112 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:04,114 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:04,117 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-10-16 12:27:04,117 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:04,117 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:04,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 12:27:04,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:04,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 12:27:04,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=57, Unknown=0, NotChecked=0, Total=110 [2020-10-16 12:27:04,119 INFO L87 Difference]: Start difference. First operand 51 states and 97 transitions. Second operand 9 states. [2020-10-16 12:27:04,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:04,168 INFO L93 Difference]: Finished difference Result 52 states and 98 transitions. [2020-10-16 12:27:04,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:27:04,168 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-16 12:27:04,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:04,169 INFO L225 Difference]: With dead ends: 52 [2020-10-16 12:27:04,169 INFO L226 Difference]: Without dead ends: 52 [2020-10-16 12:27:04,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=57, Unknown=0, NotChecked=0, Total=110 [2020-10-16 12:27:04,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-16 12:27:04,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-16 12:27:04,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-16 12:27:04,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 98 transitions. [2020-10-16 12:27:04,173 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 98 transitions. Word has length 15 [2020-10-16 12:27:04,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:04,173 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 98 transitions. [2020-10-16 12:27:04,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 12:27:04,174 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-10-16 12:27:04,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 12:27:04,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:04,175 INFO L422 BasicCegarLoop]: trace histogram [7, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:04,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-10-16 12:27:04,384 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:04,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:04,385 INFO L82 PathProgramCache]: Analyzing trace with hash 515593048, now seen corresponding path program 4 times [2020-10-16 12:27:04,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:04,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390179073] [2020-10-16 12:27:04,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:04,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390179073] [2020-10-16 12:27:04,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218748082] [2020-10-16 12:27:04,457 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:04,530 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:04,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:04,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 12:27:04,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:04,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:04,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-10-16 12:27:04,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1839743650] [2020-10-16 12:27:04,583 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:04,585 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:04,590 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 16 transitions. [2020-10-16 12:27:04,590 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:04,591 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:04,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:27:04,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:04,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:27:04,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=68, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:27:04,593 INFO L87 Difference]: Start difference. First operand 52 states and 98 transitions. Second operand 10 states. [2020-10-16 12:27:04,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:04,631 INFO L93 Difference]: Finished difference Result 53 states and 99 transitions. [2020-10-16 12:27:04,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 12:27:04,632 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-10-16 12:27:04,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:04,633 INFO L225 Difference]: With dead ends: 53 [2020-10-16 12:27:04,633 INFO L226 Difference]: Without dead ends: 53 [2020-10-16 12:27:04,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=68, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:27:04,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-16 12:27:04,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-16 12:27:04,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-16 12:27:04,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 99 transitions. [2020-10-16 12:27:04,639 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 99 transitions. Word has length 16 [2020-10-16 12:27:04,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:04,640 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 99 transitions. [2020-10-16 12:27:04,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:27:04,640 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 99 transitions. [2020-10-16 12:27:04,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:27:04,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:04,642 INFO L422 BasicCegarLoop]: trace histogram [8, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:04,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:04,856 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:04,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:04,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1669794095, now seen corresponding path program 5 times [2020-10-16 12:27:04,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:04,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441295888] [2020-10-16 12:27:04,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:04,938 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:04,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441295888] [2020-10-16 12:27:04,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924265722] [2020-10-16 12:27:04,939 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:05,052 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-16 12:27:05,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:05,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 12:27:05,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:05,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:05,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2020-10-16 12:27:05,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1960110327] [2020-10-16 12:27:05,083 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:05,085 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:05,088 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-10-16 12:27:05,089 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:05,089 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:05,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 12:27:05,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:05,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 12:27:05,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=80, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:27:05,090 INFO L87 Difference]: Start difference. First operand 53 states and 99 transitions. Second operand 11 states. [2020-10-16 12:27:05,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:05,123 INFO L93 Difference]: Finished difference Result 54 states and 100 transitions. [2020-10-16 12:27:05,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:27:05,123 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2020-10-16 12:27:05,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:05,124 INFO L225 Difference]: With dead ends: 54 [2020-10-16 12:27:05,124 INFO L226 Difference]: Without dead ends: 54 [2020-10-16 12:27:05,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=76, Invalid=80, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:27:05,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-16 12:27:05,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-16 12:27:05,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-16 12:27:05,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 100 transitions. [2020-10-16 12:27:05,128 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 100 transitions. Word has length 17 [2020-10-16 12:27:05,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:05,129 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 100 transitions. [2020-10-16 12:27:05,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 12:27:05,129 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 100 transitions. [2020-10-16 12:27:05,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 12:27:05,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:05,130 INFO L422 BasicCegarLoop]: trace histogram [9, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:05,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:05,341 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:05,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:05,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1204679112, now seen corresponding path program 6 times [2020-10-16 12:27:05,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:05,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925440623] [2020-10-16 12:27:05,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:05,433 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:05,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925440623] [2020-10-16 12:27:05,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689744999] [2020-10-16 12:27:05,434 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:05,512 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-10-16 12:27:05,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:05,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 12:27:05,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:05,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:05,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-10-16 12:27:05,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1450865408] [2020-10-16 12:27:05,544 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:05,546 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:05,549 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 18 transitions. [2020-10-16 12:27:05,549 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:05,550 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:05,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:27:05,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:05,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:27:05,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=93, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:27:05,551 INFO L87 Difference]: Start difference. First operand 54 states and 100 transitions. Second operand 12 states. [2020-10-16 12:27:05,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:05,581 INFO L93 Difference]: Finished difference Result 55 states and 101 transitions. [2020-10-16 12:27:05,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 12:27:05,581 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-10-16 12:27:05,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:05,582 INFO L225 Difference]: With dead ends: 55 [2020-10-16 12:27:05,582 INFO L226 Difference]: Without dead ends: 55 [2020-10-16 12:27:05,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=93, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:27:05,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-16 12:27:05,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-16 12:27:05,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-16 12:27:05,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 101 transitions. [2020-10-16 12:27:05,586 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 101 transitions. Word has length 18 [2020-10-16 12:27:05,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:05,586 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 101 transitions. [2020-10-16 12:27:05,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:27:05,586 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 101 transitions. [2020-10-16 12:27:05,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:27:05,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:05,587 INFO L422 BasicCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:05,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-16 12:27:05,799 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:05,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:05,799 INFO L82 PathProgramCache]: Analyzing trace with hash -119035313, now seen corresponding path program 7 times [2020-10-16 12:27:05,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:05,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980954646] [2020-10-16 12:27:05,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:05,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980954646] [2020-10-16 12:27:05,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040281387] [2020-10-16 12:27:05,906 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:05,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 12:27:05,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:05,994 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:05,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:05,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2020-10-16 12:27:05,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1501095490] [2020-10-16 12:27:05,995 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:05,998 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:06,001 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-10-16 12:27:06,001 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:06,002 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:06,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:27:06,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:06,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:27:06,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=107, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:27:06,003 INFO L87 Difference]: Start difference. First operand 55 states and 101 transitions. Second operand 13 states. [2020-10-16 12:27:06,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:06,047 INFO L93 Difference]: Finished difference Result 56 states and 102 transitions. [2020-10-16 12:27:06,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 12:27:06,047 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 19 [2020-10-16 12:27:06,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:06,048 INFO L225 Difference]: With dead ends: 56 [2020-10-16 12:27:06,048 INFO L226 Difference]: Without dead ends: 56 [2020-10-16 12:27:06,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=103, Invalid=107, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:27:06,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-16 12:27:06,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-16 12:27:06,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-16 12:27:06,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 102 transitions. [2020-10-16 12:27:06,056 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 102 transitions. Word has length 19 [2020-10-16 12:27:06,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:06,057 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 102 transitions. [2020-10-16 12:27:06,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:27:06,057 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 102 transitions. [2020-10-16 12:27:06,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-16 12:27:06,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:06,058 INFO L422 BasicCegarLoop]: trace histogram [11, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:06,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-16 12:27:06,259 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:06,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:06,260 INFO L82 PathProgramCache]: Analyzing trace with hash -823815912, now seen corresponding path program 8 times [2020-10-16 12:27:06,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:06,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761449050] [2020-10-16 12:27:06,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:06,383 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:06,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761449050] [2020-10-16 12:27:06,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148317664] [2020-10-16 12:27:06,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:06,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:06,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:06,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-16 12:27:06,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:06,482 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:06,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:06,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-10-16 12:27:06,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [757055552] [2020-10-16 12:27:06,483 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:06,486 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:06,490 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 20 transitions. [2020-10-16 12:27:06,490 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:06,490 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:06,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:27:06,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:06,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:27:06,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=122, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:27:06,492 INFO L87 Difference]: Start difference. First operand 56 states and 102 transitions. Second operand 14 states. [2020-10-16 12:27:06,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:06,535 INFO L93 Difference]: Finished difference Result 57 states and 103 transitions. [2020-10-16 12:27:06,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:27:06,535 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 20 [2020-10-16 12:27:06,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:06,536 INFO L225 Difference]: With dead ends: 57 [2020-10-16 12:27:06,536 INFO L226 Difference]: Without dead ends: 57 [2020-10-16 12:27:06,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=122, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:27:06,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-16 12:27:06,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-16 12:27:06,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-16 12:27:06,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 103 transitions. [2020-10-16 12:27:06,541 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 103 transitions. Word has length 20 [2020-10-16 12:27:06,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:06,541 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 103 transitions. [2020-10-16 12:27:06,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:27:06,541 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 103 transitions. [2020-10-16 12:27:06,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:27:06,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:06,543 INFO L422 BasicCegarLoop]: trace histogram [12, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:06,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-16 12:27:06,744 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:06,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:06,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1197178001, now seen corresponding path program 9 times [2020-10-16 12:27:06,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:06,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173028036] [2020-10-16 12:27:06,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:06,880 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:06,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173028036] [2020-10-16 12:27:06,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061591131] [2020-10-16 12:27:06,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:07,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-10-16 12:27:07,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:07,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-16 12:27:07,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:07,121 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:07,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:07,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2020-10-16 12:27:07,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1769375171] [2020-10-16 12:27:07,122 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:07,126 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:07,132 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-16 12:27:07,133 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:07,134 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:07,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 12:27:07,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:07,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 12:27:07,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=138, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:07,135 INFO L87 Difference]: Start difference. First operand 57 states and 103 transitions. Second operand 15 states. [2020-10-16 12:27:07,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:07,172 INFO L93 Difference]: Finished difference Result 58 states and 104 transitions. [2020-10-16 12:27:07,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:27:07,172 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 21 [2020-10-16 12:27:07,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:07,173 INFO L225 Difference]: With dead ends: 58 [2020-10-16 12:27:07,173 INFO L226 Difference]: Without dead ends: 58 [2020-10-16 12:27:07,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=134, Invalid=138, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:27:07,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-16 12:27:07,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-16 12:27:07,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-16 12:27:07,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 104 transitions. [2020-10-16 12:27:07,180 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 104 transitions. Word has length 21 [2020-10-16 12:27:07,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:07,180 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 104 transitions. [2020-10-16 12:27:07,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 12:27:07,180 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 104 transitions. [2020-10-16 12:27:07,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 12:27:07,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:07,181 INFO L422 BasicCegarLoop]: trace histogram [13, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:07,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:07,382 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:07,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:07,383 INFO L82 PathProgramCache]: Analyzing trace with hash 113499128, now seen corresponding path program 10 times [2020-10-16 12:27:07,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:07,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477346078] [2020-10-16 12:27:07,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:07,573 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:07,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477346078] [2020-10-16 12:27:07,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162423958] [2020-10-16 12:27:07,574 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:07,653 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:07,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:07,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-16 12:27:07,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:07,722 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:07,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:07,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-10-16 12:27:07,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [347493885] [2020-10-16 12:27:07,724 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:07,729 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:07,736 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 22 transitions. [2020-10-16 12:27:07,736 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:07,737 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:07,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:27:07,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:07,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:27:07,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=155, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:07,738 INFO L87 Difference]: Start difference. First operand 58 states and 104 transitions. Second operand 16 states. [2020-10-16 12:27:07,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:07,785 INFO L93 Difference]: Finished difference Result 59 states and 105 transitions. [2020-10-16 12:27:07,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:27:07,786 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2020-10-16 12:27:07,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:07,787 INFO L225 Difference]: With dead ends: 59 [2020-10-16 12:27:07,787 INFO L226 Difference]: Without dead ends: 59 [2020-10-16 12:27:07,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=155, Unknown=0, NotChecked=0, Total=306 [2020-10-16 12:27:07,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-16 12:27:07,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-16 12:27:07,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-16 12:27:07,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 105 transitions. [2020-10-16 12:27:07,794 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 105 transitions. Word has length 22 [2020-10-16 12:27:07,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:07,795 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 105 transitions. [2020-10-16 12:27:07,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:27:07,795 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 105 transitions. [2020-10-16 12:27:07,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 12:27:07,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:07,797 INFO L422 BasicCegarLoop]: trace histogram [14, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:08,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-16 12:27:08,009 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:08,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:08,010 INFO L82 PathProgramCache]: Analyzing trace with hash 2089784463, now seen corresponding path program 11 times [2020-10-16 12:27:08,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:08,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85322391] [2020-10-16 12:27:08,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:08,267 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:08,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85322391] [2020-10-16 12:27:08,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902583369] [2020-10-16 12:27:08,268 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:08,446 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-10-16 12:27:08,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:08,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-16 12:27:08,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:08,481 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:08,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:08,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-10-16 12:27:08,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [995892284] [2020-10-16 12:27:08,482 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:08,486 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:08,491 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-10-16 12:27:08,491 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:08,492 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:08,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 12:27:08,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:08,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 12:27:08,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=173, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:08,493 INFO L87 Difference]: Start difference. First operand 59 states and 105 transitions. Second operand 17 states. [2020-10-16 12:27:08,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:08,525 INFO L93 Difference]: Finished difference Result 60 states and 106 transitions. [2020-10-16 12:27:08,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 12:27:08,525 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 23 [2020-10-16 12:27:08,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:08,526 INFO L225 Difference]: With dead ends: 60 [2020-10-16 12:27:08,526 INFO L226 Difference]: Without dead ends: 60 [2020-10-16 12:27:08,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=169, Invalid=173, Unknown=0, NotChecked=0, Total=342 [2020-10-16 12:27:08,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-16 12:27:08,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-16 12:27:08,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-16 12:27:08,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 106 transitions. [2020-10-16 12:27:08,529 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 106 transitions. Word has length 23 [2020-10-16 12:27:08,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:08,530 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 106 transitions. [2020-10-16 12:27:08,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 12:27:08,530 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 106 transitions. [2020-10-16 12:27:08,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-16 12:27:08,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:08,531 INFO L422 BasicCegarLoop]: trace histogram [15, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:08,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-16 12:27:08,740 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:08,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:08,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1069879592, now seen corresponding path program 12 times [2020-10-16 12:27:08,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:08,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042931467] [2020-10-16 12:27:08,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:08,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042931467] [2020-10-16 12:27:08,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037555861] [2020-10-16 12:27:08,930 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:09,266 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-10-16 12:27:09,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:09,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-16 12:27:09,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:09,303 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:09,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:09,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-10-16 12:27:09,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [431739720] [2020-10-16 12:27:09,304 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:09,312 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:09,318 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 24 transitions. [2020-10-16 12:27:09,318 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:09,319 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:09,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 12:27:09,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:09,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 12:27:09,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=192, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:27:09,321 INFO L87 Difference]: Start difference. First operand 60 states and 106 transitions. Second operand 18 states. [2020-10-16 12:27:09,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:09,354 INFO L93 Difference]: Finished difference Result 61 states and 107 transitions. [2020-10-16 12:27:09,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:27:09,354 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 24 [2020-10-16 12:27:09,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:09,355 INFO L225 Difference]: With dead ends: 61 [2020-10-16 12:27:09,355 INFO L226 Difference]: Without dead ends: 61 [2020-10-16 12:27:09,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=188, Invalid=192, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:27:09,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-16 12:27:09,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-16 12:27:09,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-16 12:27:09,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 107 transitions. [2020-10-16 12:27:09,358 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 107 transitions. Word has length 24 [2020-10-16 12:27:09,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:09,359 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 107 transitions. [2020-10-16 12:27:09,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 12:27:09,359 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 107 transitions. [2020-10-16 12:27:09,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:27:09,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:09,359 INFO L422 BasicCegarLoop]: trace histogram [16, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:09,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 12:27:09,568 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:09,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:09,568 INFO L82 PathProgramCache]: Analyzing trace with hash -235217489, now seen corresponding path program 13 times [2020-10-16 12:27:09,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:09,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549545766] [2020-10-16 12:27:09,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:09,774 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:09,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549545766] [2020-10-16 12:27:09,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823522910] [2020-10-16 12:27:09,775 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:09,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-16 12:27:09,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:09,873 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:09,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:09,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-10-16 12:27:09,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1218917097] [2020-10-16 12:27:09,874 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:09,878 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:09,884 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-10-16 12:27:09,884 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:09,885 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:09,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-16 12:27:09,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:09,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-16 12:27:09,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=212, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:09,886 INFO L87 Difference]: Start difference. First operand 61 states and 107 transitions. Second operand 19 states. [2020-10-16 12:27:09,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:09,926 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-10-16 12:27:09,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 12:27:09,927 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 25 [2020-10-16 12:27:09,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:09,928 INFO L225 Difference]: With dead ends: 62 [2020-10-16 12:27:09,928 INFO L226 Difference]: Without dead ends: 62 [2020-10-16 12:27:09,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=208, Invalid=212, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:27:09,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-16 12:27:09,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-16 12:27:09,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-16 12:27:09,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 108 transitions. [2020-10-16 12:27:09,931 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 108 transitions. Word has length 25 [2020-10-16 12:27:09,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:09,932 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 108 transitions. [2020-10-16 12:27:09,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-16 12:27:09,932 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 108 transitions. [2020-10-16 12:27:09,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-16 12:27:09,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:09,933 INFO L422 BasicCegarLoop]: trace histogram [17, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:10,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:10,134 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:10,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:10,134 INFO L82 PathProgramCache]: Analyzing trace with hash -130496072, now seen corresponding path program 14 times [2020-10-16 12:27:10,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:10,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26239251] [2020-10-16 12:27:10,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:10,371 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:10,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26239251] [2020-10-16 12:27:10,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783132132] [2020-10-16 12:27:10,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:10,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:10,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:10,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-16 12:27:10,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:10,458 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:10,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:10,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-16 12:27:10,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [59059059] [2020-10-16 12:27:10,459 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:10,464 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:10,471 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 26 transitions. [2020-10-16 12:27:10,471 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:10,472 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:10,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-16 12:27:10,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:10,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-16 12:27:10,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=233, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:10,473 INFO L87 Difference]: Start difference. First operand 62 states and 108 transitions. Second operand 20 states. [2020-10-16 12:27:10,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:10,514 INFO L93 Difference]: Finished difference Result 63 states and 109 transitions. [2020-10-16 12:27:10,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-16 12:27:10,514 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 26 [2020-10-16 12:27:10,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:10,515 INFO L225 Difference]: With dead ends: 63 [2020-10-16 12:27:10,515 INFO L226 Difference]: Without dead ends: 63 [2020-10-16 12:27:10,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=229, Invalid=233, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:27:10,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-16 12:27:10,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-16 12:27:10,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-16 12:27:10,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 109 transitions. [2020-10-16 12:27:10,518 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 109 transitions. Word has length 26 [2020-10-16 12:27:10,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:10,519 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 109 transitions. [2020-10-16 12:27:10,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-16 12:27:10,519 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 109 transitions. [2020-10-16 12:27:10,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-16 12:27:10,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:10,519 INFO L422 BasicCegarLoop]: trace histogram [18, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:10,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:10,720 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:10,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:10,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1179099441, now seen corresponding path program 15 times [2020-10-16 12:27:10,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:10,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990387166] [2020-10-16 12:27:10,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:10,959 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:10,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990387166] [2020-10-16 12:27:10,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75720207] [2020-10-16 12:27:10,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:11,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-10-16 12:27:11,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:11,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-16 12:27:11,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:11,936 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:11,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:11,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-10-16 12:27:11,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [544161443] [2020-10-16 12:27:11,937 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:11,941 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:11,947 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 27 transitions. [2020-10-16 12:27:11,947 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:11,947 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:11,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-16 12:27:11,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:11,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-16 12:27:11,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=255, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:27:11,949 INFO L87 Difference]: Start difference. First operand 63 states and 109 transitions. Second operand 21 states. [2020-10-16 12:27:11,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:11,994 INFO L93 Difference]: Finished difference Result 64 states and 110 transitions. [2020-10-16 12:27:11,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-16 12:27:11,995 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 27 [2020-10-16 12:27:11,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:11,996 INFO L225 Difference]: With dead ends: 64 [2020-10-16 12:27:11,996 INFO L226 Difference]: Without dead ends: 64 [2020-10-16 12:27:11,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=251, Invalid=255, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:27:11,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-16 12:27:11,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-10-16 12:27:11,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-16 12:27:11,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 110 transitions. [2020-10-16 12:27:11,999 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 110 transitions. Word has length 27 [2020-10-16 12:27:11,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:11,999 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 110 transitions. [2020-10-16 12:27:11,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-16 12:27:12,000 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 110 transitions. [2020-10-16 12:27:12,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-16 12:27:12,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:12,003 INFO L422 BasicCegarLoop]: trace histogram [19, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:12,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-16 12:27:12,212 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:12,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:12,212 INFO L82 PathProgramCache]: Analyzing trace with hash 673934488, now seen corresponding path program 16 times [2020-10-16 12:27:12,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:12,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886217157] [2020-10-16 12:27:12,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:12,502 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:12,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886217157] [2020-10-16 12:27:12,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074904874] [2020-10-16 12:27:12,502 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:12,557 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:12,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:12,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-16 12:27:12,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:12,605 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:12,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:12,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-10-16 12:27:12,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [725654646] [2020-10-16 12:27:12,606 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:12,612 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:12,620 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 28 transitions. [2020-10-16 12:27:12,620 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:12,620 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:12,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-16 12:27:12,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:12,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-16 12:27:12,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=278, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:27:12,621 INFO L87 Difference]: Start difference. First operand 64 states and 110 transitions. Second operand 22 states. [2020-10-16 12:27:12,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:12,669 INFO L93 Difference]: Finished difference Result 65 states and 111 transitions. [2020-10-16 12:27:12,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-16 12:27:12,670 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 28 [2020-10-16 12:27:12,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:12,671 INFO L225 Difference]: With dead ends: 65 [2020-10-16 12:27:12,671 INFO L226 Difference]: Without dead ends: 65 [2020-10-16 12:27:12,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=274, Invalid=278, Unknown=0, NotChecked=0, Total=552 [2020-10-16 12:27:12,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-16 12:27:12,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-16 12:27:12,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-16 12:27:12,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 111 transitions. [2020-10-16 12:27:12,676 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 111 transitions. Word has length 28 [2020-10-16 12:27:12,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:12,676 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 111 transitions. [2020-10-16 12:27:12,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-16 12:27:12,676 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 111 transitions. [2020-10-16 12:27:12,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-16 12:27:12,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:12,677 INFO L422 BasicCegarLoop]: trace histogram [20, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:12,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-16 12:27:12,878 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:12,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:12,879 INFO L82 PathProgramCache]: Analyzing trace with hash -2011555857, now seen corresponding path program 17 times [2020-10-16 12:27:12,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:12,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444516269] [2020-10-16 12:27:12,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:13,170 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:13,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444516269] [2020-10-16 12:27:13,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348806554] [2020-10-16 12:27:13,171 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:13,529 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-10-16 12:27:13,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:13,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-16 12:27:13,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:13,568 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:13,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:13,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2020-10-16 12:27:13,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [836408386] [2020-10-16 12:27:13,569 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:13,575 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:13,583 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 29 transitions. [2020-10-16 12:27:13,583 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:13,584 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:13,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-16 12:27:13,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:13,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-16 12:27:13,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=302, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:27:13,585 INFO L87 Difference]: Start difference. First operand 65 states and 111 transitions. Second operand 23 states. [2020-10-16 12:27:13,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:13,630 INFO L93 Difference]: Finished difference Result 66 states and 112 transitions. [2020-10-16 12:27:13,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-16 12:27:13,631 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 29 [2020-10-16 12:27:13,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:13,633 INFO L225 Difference]: With dead ends: 66 [2020-10-16 12:27:13,634 INFO L226 Difference]: Without dead ends: 66 [2020-10-16 12:27:13,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=298, Invalid=302, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:27:13,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-16 12:27:13,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-16 12:27:13,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-16 12:27:13,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 112 transitions. [2020-10-16 12:27:13,636 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 112 transitions. Word has length 29 [2020-10-16 12:27:13,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:13,636 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 112 transitions. [2020-10-16 12:27:13,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-16 12:27:13,636 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 112 transitions. [2020-10-16 12:27:13,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-16 12:27:13,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:13,637 INFO L422 BasicCegarLoop]: trace histogram [21, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:13,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:13,838 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:13,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:13,838 INFO L82 PathProgramCache]: Analyzing trace with hash 637589368, now seen corresponding path program 18 times [2020-10-16 12:27:13,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:13,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947062424] [2020-10-16 12:27:13,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:14,162 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:14,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947062424] [2020-10-16 12:27:14,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774304488] [2020-10-16 12:27:14,162 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:15,504 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-10-16 12:27:15,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:15,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-16 12:27:15,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:15,565 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:15,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:15,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2020-10-16 12:27:15,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1515229711] [2020-10-16 12:27:15,566 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:15,572 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:15,582 INFO L258 McrAutomatonBuilder]: Finished intersection with 31 states and 30 transitions. [2020-10-16 12:27:15,582 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:15,583 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:15,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-16 12:27:15,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:15,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-16 12:27:15,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=327, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:27:15,584 INFO L87 Difference]: Start difference. First operand 66 states and 112 transitions. Second operand 24 states. [2020-10-16 12:27:15,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:15,633 INFO L93 Difference]: Finished difference Result 67 states and 113 transitions. [2020-10-16 12:27:15,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-16 12:27:15,634 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 30 [2020-10-16 12:27:15,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:15,634 INFO L225 Difference]: With dead ends: 67 [2020-10-16 12:27:15,634 INFO L226 Difference]: Without dead ends: 67 [2020-10-16 12:27:15,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=323, Invalid=327, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:27:15,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-16 12:27:15,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-16 12:27:15,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-16 12:27:15,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 113 transitions. [2020-10-16 12:27:15,637 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 113 transitions. Word has length 30 [2020-10-16 12:27:15,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:15,638 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 113 transitions. [2020-10-16 12:27:15,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-16 12:27:15,638 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 113 transitions. [2020-10-16 12:27:15,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-16 12:27:15,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:15,638 INFO L422 BasicCegarLoop]: trace histogram [22, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:15,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-16 12:27:15,848 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:15,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:15,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1156712719, now seen corresponding path program 19 times [2020-10-16 12:27:15,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:15,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092851735] [2020-10-16 12:27:15,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:16,250 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:16,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092851735] [2020-10-16 12:27:16,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748363751] [2020-10-16 12:27:16,251 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:16,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-16 12:27:16,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:16,377 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:16,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:16,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-10-16 12:27:16,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1815515189] [2020-10-16 12:27:16,378 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:16,389 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:16,403 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 31 transitions. [2020-10-16 12:27:16,403 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:16,404 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:16,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-16 12:27:16,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:16,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-16 12:27:16,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=353, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:27:16,406 INFO L87 Difference]: Start difference. First operand 67 states and 113 transitions. Second operand 25 states. [2020-10-16 12:27:16,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:16,472 INFO L93 Difference]: Finished difference Result 68 states and 114 transitions. [2020-10-16 12:27:16,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-16 12:27:16,473 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 31 [2020-10-16 12:27:16,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:16,474 INFO L225 Difference]: With dead ends: 68 [2020-10-16 12:27:16,474 INFO L226 Difference]: Without dead ends: 68 [2020-10-16 12:27:16,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=349, Invalid=353, Unknown=0, NotChecked=0, Total=702 [2020-10-16 12:27:16,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-16 12:27:16,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-16 12:27:16,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-16 12:27:16,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 114 transitions. [2020-10-16 12:27:16,479 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 114 transitions. Word has length 31 [2020-10-16 12:27:16,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:16,479 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 114 transitions. [2020-10-16 12:27:16,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-16 12:27:16,480 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 114 transitions. [2020-10-16 12:27:16,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-16 12:27:16,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:16,481 INFO L422 BasicCegarLoop]: trace histogram [23, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:16,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:16,693 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:16,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:16,694 INFO L82 PathProgramCache]: Analyzing trace with hash 69667416, now seen corresponding path program 20 times [2020-10-16 12:27:16,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:16,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077102176] [2020-10-16 12:27:16,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:17,098 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:17,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077102176] [2020-10-16 12:27:17,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074772510] [2020-10-16 12:27:17,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:17,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:17,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:17,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-16 12:27:17,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:17,249 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:17,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:17,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2020-10-16 12:27:17,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [506823000] [2020-10-16 12:27:17,250 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:17,257 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:17,270 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 32 transitions. [2020-10-16 12:27:17,270 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:17,271 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:17,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-16 12:27:17,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:17,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-16 12:27:17,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=380, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:27:17,273 INFO L87 Difference]: Start difference. First operand 68 states and 114 transitions. Second operand 26 states. [2020-10-16 12:27:17,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:17,329 INFO L93 Difference]: Finished difference Result 69 states and 115 transitions. [2020-10-16 12:27:17,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-16 12:27:17,329 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 32 [2020-10-16 12:27:17,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:17,330 INFO L225 Difference]: With dead ends: 69 [2020-10-16 12:27:17,330 INFO L226 Difference]: Without dead ends: 69 [2020-10-16 12:27:17,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=376, Invalid=380, Unknown=0, NotChecked=0, Total=756 [2020-10-16 12:27:17,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-16 12:27:17,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-16 12:27:17,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-16 12:27:17,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 115 transitions. [2020-10-16 12:27:17,333 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 115 transitions. Word has length 32 [2020-10-16 12:27:17,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:17,333 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 115 transitions. [2020-10-16 12:27:17,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-16 12:27:17,333 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 115 transitions. [2020-10-16 12:27:17,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-16 12:27:17,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:17,334 INFO L422 BasicCegarLoop]: trace histogram [24, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:17,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-16 12:27:17,535 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:17,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:17,535 INFO L82 PathProgramCache]: Analyzing trace with hash 731001391, now seen corresponding path program 21 times [2020-10-16 12:27:17,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:17,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764070808] [2020-10-16 12:27:17,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:17,977 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:17,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764070808] [2020-10-16 12:27:17,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764019348] [2020-10-16 12:27:17,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:18,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-10-16 12:27:18,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:18,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-16 12:27:18,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:18,535 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:18,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:18,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-10-16 12:27:18,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1729178388] [2020-10-16 12:27:18,536 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:18,543 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:18,555 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 33 transitions. [2020-10-16 12:27:18,555 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:18,556 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:18,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-16 12:27:18,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:18,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-16 12:27:18,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=408, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:27:18,557 INFO L87 Difference]: Start difference. First operand 69 states and 115 transitions. Second operand 27 states. [2020-10-16 12:27:18,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:18,599 INFO L93 Difference]: Finished difference Result 70 states and 116 transitions. [2020-10-16 12:27:18,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-16 12:27:18,600 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 33 [2020-10-16 12:27:18,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:18,601 INFO L225 Difference]: With dead ends: 70 [2020-10-16 12:27:18,601 INFO L226 Difference]: Without dead ends: 70 [2020-10-16 12:27:18,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=404, Invalid=408, Unknown=0, NotChecked=0, Total=812 [2020-10-16 12:27:18,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-16 12:27:18,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-10-16 12:27:18,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-16 12:27:18,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 116 transitions. [2020-10-16 12:27:18,604 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 116 transitions. Word has length 33 [2020-10-16 12:27:18,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:18,605 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 116 transitions. [2020-10-16 12:27:18,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-16 12:27:18,605 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 116 transitions. [2020-10-16 12:27:18,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-16 12:27:18,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:18,606 INFO L422 BasicCegarLoop]: trace histogram [25, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:18,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-16 12:27:18,814 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:18,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:18,814 INFO L82 PathProgramCache]: Analyzing trace with hash -242481864, now seen corresponding path program 22 times [2020-10-16 12:27:18,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:18,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434261210] [2020-10-16 12:27:18,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:19,229 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:19,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434261210] [2020-10-16 12:27:19,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064448208] [2020-10-16 12:27:19,230 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:19,317 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:19,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:19,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-16 12:27:19,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:19,370 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:19,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:19,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2020-10-16 12:27:19,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [568164744] [2020-10-16 12:27:19,371 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:19,380 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:19,393 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 34 transitions. [2020-10-16 12:27:19,393 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:19,394 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:19,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-16 12:27:19,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:19,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-16 12:27:19,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=437, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:27:19,395 INFO L87 Difference]: Start difference. First operand 70 states and 116 transitions. Second operand 28 states. [2020-10-16 12:27:19,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:19,445 INFO L93 Difference]: Finished difference Result 71 states and 117 transitions. [2020-10-16 12:27:19,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-16 12:27:19,445 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 34 [2020-10-16 12:27:19,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:19,446 INFO L225 Difference]: With dead ends: 71 [2020-10-16 12:27:19,446 INFO L226 Difference]: Without dead ends: 71 [2020-10-16 12:27:19,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=433, Invalid=437, Unknown=0, NotChecked=0, Total=870 [2020-10-16 12:27:19,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-16 12:27:19,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-16 12:27:19,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-16 12:27:19,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 117 transitions. [2020-10-16 12:27:19,451 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 117 transitions. Word has length 34 [2020-10-16 12:27:19,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:19,451 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 117 transitions. [2020-10-16 12:27:19,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-16 12:27:19,451 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 117 transitions. [2020-10-16 12:27:19,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-16 12:27:19,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:19,452 INFO L422 BasicCegarLoop]: trace histogram [26, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:19,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-16 12:27:19,653 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:19,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:19,653 INFO L82 PathProgramCache]: Analyzing trace with hash -355691697, now seen corresponding path program 23 times [2020-10-16 12:27:19,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:19,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501010137] [2020-10-16 12:27:19,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:20,087 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:20,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501010137] [2020-10-16 12:27:20,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474137204] [2020-10-16 12:27:20,088 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:20,534 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2020-10-16 12:27:20,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:20,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-16 12:27:20,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:20,570 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:20,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:20,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-10-16 12:27:20,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [474174015] [2020-10-16 12:27:20,571 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:20,580 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:20,594 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 35 transitions. [2020-10-16 12:27:20,594 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:20,595 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:20,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-16 12:27:20,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:20,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-16 12:27:20,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=467, Unknown=0, NotChecked=0, Total=930 [2020-10-16 12:27:20,596 INFO L87 Difference]: Start difference. First operand 71 states and 117 transitions. Second operand 29 states. [2020-10-16 12:27:20,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:20,640 INFO L93 Difference]: Finished difference Result 72 states and 118 transitions. [2020-10-16 12:27:20,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 12:27:20,641 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 35 [2020-10-16 12:27:20,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:20,641 INFO L225 Difference]: With dead ends: 72 [2020-10-16 12:27:20,641 INFO L226 Difference]: Without dead ends: 72 [2020-10-16 12:27:20,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=463, Invalid=467, Unknown=0, NotChecked=0, Total=930 [2020-10-16 12:27:20,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-16 12:27:20,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-16 12:27:20,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-16 12:27:20,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 118 transitions. [2020-10-16 12:27:20,645 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 118 transitions. Word has length 35 [2020-10-16 12:27:20,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:20,645 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 118 transitions. [2020-10-16 12:27:20,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-16 12:27:20,646 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 118 transitions. [2020-10-16 12:27:20,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-16 12:27:20,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:20,646 INFO L422 BasicCegarLoop]: trace histogram [27, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:20,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-16 12:27:20,857 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:20,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:20,857 INFO L82 PathProgramCache]: Analyzing trace with hash 429770776, now seen corresponding path program 24 times [2020-10-16 12:27:20,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:20,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599933445] [2020-10-16 12:27:20,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:21,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599933445] [2020-10-16 12:27:21,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986208239] [2020-10-16 12:27:21,360 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:26,379 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2020-10-16 12:27:26,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:26,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-16 12:27:26,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:26,443 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:26,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:26,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-10-16 12:27:26,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1371249210] [2020-10-16 12:27:26,444 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:26,462 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:26,477 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-10-16 12:27:26,477 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:26,478 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:26,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-16 12:27:26,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:26,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-16 12:27:26,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=494, Invalid=498, Unknown=0, NotChecked=0, Total=992 [2020-10-16 12:27:26,479 INFO L87 Difference]: Start difference. First operand 72 states and 118 transitions. Second operand 30 states. [2020-10-16 12:27:26,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:26,526 INFO L93 Difference]: Finished difference Result 73 states and 119 transitions. [2020-10-16 12:27:26,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-16 12:27:26,527 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 36 [2020-10-16 12:27:26,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:26,527 INFO L225 Difference]: With dead ends: 73 [2020-10-16 12:27:26,528 INFO L226 Difference]: Without dead ends: 73 [2020-10-16 12:27:26,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=494, Invalid=498, Unknown=0, NotChecked=0, Total=992 [2020-10-16 12:27:26,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-16 12:27:26,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-16 12:27:26,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-16 12:27:26,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 119 transitions. [2020-10-16 12:27:26,532 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 119 transitions. Word has length 36 [2020-10-16 12:27:26,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:26,532 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 119 transitions. [2020-10-16 12:27:26,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-16 12:27:26,532 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 119 transitions. [2020-10-16 12:27:26,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-16 12:27:26,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:26,533 INFO L422 BasicCegarLoop]: trace histogram [28, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:26,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:26,734 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:26,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:26,735 INFO L82 PathProgramCache]: Analyzing trace with hash -990696337, now seen corresponding path program 25 times [2020-10-16 12:27:26,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:26,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157142205] [2020-10-16 12:27:26,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:27,243 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:27,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157142205] [2020-10-16 12:27:27,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399585281] [2020-10-16 12:27:27,244 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:27,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 30 conjunts are in the unsatisfiable core [2020-10-16 12:27:27,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:27,335 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:27,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:27,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 32 [2020-10-16 12:27:27,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [525044119] [2020-10-16 12:27:27,336 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:27,344 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:27,360 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 37 transitions. [2020-10-16 12:27:27,360 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:27,361 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:27,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-16 12:27:27,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:27,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-16 12:27:27,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=526, Invalid=530, Unknown=0, NotChecked=0, Total=1056 [2020-10-16 12:27:27,362 INFO L87 Difference]: Start difference. First operand 73 states and 119 transitions. Second operand 31 states. [2020-10-16 12:27:27,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:27,419 INFO L93 Difference]: Finished difference Result 74 states and 120 transitions. [2020-10-16 12:27:27,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-16 12:27:27,420 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 37 [2020-10-16 12:27:27,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:27,421 INFO L225 Difference]: With dead ends: 74 [2020-10-16 12:27:27,421 INFO L226 Difference]: Without dead ends: 74 [2020-10-16 12:27:27,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=526, Invalid=530, Unknown=0, NotChecked=0, Total=1056 [2020-10-16 12:27:27,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-16 12:27:27,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-16 12:27:27,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-16 12:27:27,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 120 transitions. [2020-10-16 12:27:27,425 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 120 transitions. Word has length 37 [2020-10-16 12:27:27,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:27,425 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 120 transitions. [2020-10-16 12:27:27,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-16 12:27:27,425 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 120 transitions. [2020-10-16 12:27:27,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-16 12:27:27,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:27,426 INFO L422 BasicCegarLoop]: trace histogram [29, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:27,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:27,637 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:27,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:27,637 INFO L82 PathProgramCache]: Analyzing trace with hash -2075503880, now seen corresponding path program 26 times [2020-10-16 12:27:27,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:27,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789355572] [2020-10-16 12:27:27,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:28,213 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:28,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789355572] [2020-10-16 12:27:28,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899049016] [2020-10-16 12:27:28,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:28,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:27:28,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:28,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 31 conjunts are in the unsatisfiable core [2020-10-16 12:27:28,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:28,321 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:28,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:28,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2020-10-16 12:27:28,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [189648214] [2020-10-16 12:27:28,322 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:28,328 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:28,341 INFO L258 McrAutomatonBuilder]: Finished intersection with 39 states and 38 transitions. [2020-10-16 12:27:28,341 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:28,342 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:28,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-16 12:27:28,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:28,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-16 12:27:28,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=563, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 12:27:28,343 INFO L87 Difference]: Start difference. First operand 74 states and 120 transitions. Second operand 32 states. [2020-10-16 12:27:28,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:28,402 INFO L93 Difference]: Finished difference Result 75 states and 121 transitions. [2020-10-16 12:27:28,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-16 12:27:28,403 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 38 [2020-10-16 12:27:28,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:28,404 INFO L225 Difference]: With dead ends: 75 [2020-10-16 12:27:28,404 INFO L226 Difference]: Without dead ends: 75 [2020-10-16 12:27:28,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=559, Invalid=563, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 12:27:28,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-16 12:27:28,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-16 12:27:28,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-16 12:27:28,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 121 transitions. [2020-10-16 12:27:28,407 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 121 transitions. Word has length 38 [2020-10-16 12:27:28,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:28,408 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 121 transitions. [2020-10-16 12:27:28,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-16 12:27:28,408 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 121 transitions. [2020-10-16 12:27:28,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-16 12:27:28,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:28,408 INFO L422 BasicCegarLoop]: trace histogram [30, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:28,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:28,618 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:28,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:28,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1344799345, now seen corresponding path program 27 times [2020-10-16 12:27:28,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:28,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957477846] [2020-10-16 12:27:28,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:29,223 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:29,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957477846] [2020-10-16 12:27:29,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315921160] [2020-10-16 12:27:29,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:31,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-10-16 12:27:31,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:31,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 32 conjunts are in the unsatisfiable core [2020-10-16 12:27:31,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:31,773 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:31,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:31,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 34 [2020-10-16 12:27:31,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1909051024] [2020-10-16 12:27:31,774 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:31,783 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:31,833 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 39 transitions. [2020-10-16 12:27:31,833 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:31,834 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:31,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-16 12:27:31,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:31,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-16 12:27:31,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=593, Invalid=597, Unknown=0, NotChecked=0, Total=1190 [2020-10-16 12:27:31,835 INFO L87 Difference]: Start difference. First operand 75 states and 121 transitions. Second operand 33 states. [2020-10-16 12:27:31,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:31,883 INFO L93 Difference]: Finished difference Result 76 states and 122 transitions. [2020-10-16 12:27:31,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-16 12:27:31,884 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 39 [2020-10-16 12:27:31,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:31,884 INFO L225 Difference]: With dead ends: 76 [2020-10-16 12:27:31,885 INFO L226 Difference]: Without dead ends: 76 [2020-10-16 12:27:31,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=593, Invalid=597, Unknown=0, NotChecked=0, Total=1190 [2020-10-16 12:27:31,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-16 12:27:31,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-16 12:27:31,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-16 12:27:31,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 122 transitions. [2020-10-16 12:27:31,891 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 122 transitions. Word has length 39 [2020-10-16 12:27:31,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:31,892 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 122 transitions. [2020-10-16 12:27:31,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-16 12:27:31,892 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 122 transitions. [2020-10-16 12:27:31,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-16 12:27:31,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:31,892 INFO L422 BasicCegarLoop]: trace histogram [31, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:32,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-10-16 12:27:32,094 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:32,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:32,094 INFO L82 PathProgramCache]: Analyzing trace with hash -167795240, now seen corresponding path program 28 times [2020-10-16 12:27:32,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:32,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579876281] [2020-10-16 12:27:32,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:32,710 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:32,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579876281] [2020-10-16 12:27:32,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591263996] [2020-10-16 12:27:32,711 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:32,769 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:27:32,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:32,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 33 conjunts are in the unsatisfiable core [2020-10-16 12:27:32,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:32,803 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:32,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:32,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-10-16 12:27:32,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [819757686] [2020-10-16 12:27:32,804 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:32,813 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:32,834 INFO L258 McrAutomatonBuilder]: Finished intersection with 41 states and 40 transitions. [2020-10-16 12:27:32,835 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:32,835 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:32,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-16 12:27:32,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:32,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-16 12:27:32,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=628, Invalid=632, Unknown=0, NotChecked=0, Total=1260 [2020-10-16 12:27:32,837 INFO L87 Difference]: Start difference. First operand 76 states and 122 transitions. Second operand 34 states. [2020-10-16 12:27:32,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:32,898 INFO L93 Difference]: Finished difference Result 77 states and 123 transitions. [2020-10-16 12:27:32,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-16 12:27:32,898 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 40 [2020-10-16 12:27:32,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:32,899 INFO L225 Difference]: With dead ends: 77 [2020-10-16 12:27:32,899 INFO L226 Difference]: Without dead ends: 77 [2020-10-16 12:27:32,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=628, Invalid=632, Unknown=0, NotChecked=0, Total=1260 [2020-10-16 12:27:32,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-16 12:27:32,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-16 12:27:32,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-16 12:27:32,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 123 transitions. [2020-10-16 12:27:32,903 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 123 transitions. Word has length 40 [2020-10-16 12:27:32,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:32,903 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 123 transitions. [2020-10-16 12:27:32,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-16 12:27:32,903 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 123 transitions. [2020-10-16 12:27:32,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-16 12:27:32,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:32,905 INFO L422 BasicCegarLoop]: trace histogram [32, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:33,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:27:33,105 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:33,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:33,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1959593647, now seen corresponding path program 29 times [2020-10-16 12:27:33,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:33,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322422485] [2020-10-16 12:27:33,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:33,763 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:33,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322422485] [2020-10-16 12:27:33,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161243495] [2020-10-16 12:27:33,764 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:27:43,837 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2020-10-16 12:27:43,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:27:43,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 34 conjunts are in the unsatisfiable core [2020-10-16 12:27:43,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:27:43,948 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:43,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:27:43,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2020-10-16 12:27:43,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2132749482] [2020-10-16 12:27:43,949 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:27:43,959 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:27:43,978 INFO L258 McrAutomatonBuilder]: Finished intersection with 42 states and 41 transitions. [2020-10-16 12:27:43,978 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:27:43,979 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:27:43,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-16 12:27:43,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:27:43,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-16 12:27:43,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=664, Invalid=668, Unknown=0, NotChecked=0, Total=1332 [2020-10-16 12:27:43,981 INFO L87 Difference]: Start difference. First operand 77 states and 123 transitions. Second operand 35 states. [2020-10-16 12:27:44,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:27:44,040 INFO L93 Difference]: Finished difference Result 78 states and 124 transitions. [2020-10-16 12:27:44,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-16 12:27:44,043 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 41 [2020-10-16 12:27:44,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:27:44,044 INFO L225 Difference]: With dead ends: 78 [2020-10-16 12:27:44,044 INFO L226 Difference]: Without dead ends: 78 [2020-10-16 12:27:44,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=664, Invalid=668, Unknown=0, NotChecked=0, Total=1332 [2020-10-16 12:27:44,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-16 12:27:44,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-10-16 12:27:44,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-16 12:27:44,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 124 transitions. [2020-10-16 12:27:44,047 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 124 transitions. Word has length 41 [2020-10-16 12:27:44,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:27:44,047 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 124 transitions. [2020-10-16 12:27:44,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-16 12:27:44,048 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 124 transitions. [2020-10-16 12:27:44,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-16 12:27:44,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:27:44,048 INFO L422 BasicCegarLoop]: trace histogram [33, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:27:44,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-10-16 12:27:44,257 INFO L429 AbstractCegarLoop]: === Iteration 36 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:27:44,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:27:44,257 INFO L82 PathProgramCache]: Analyzing trace with hash -810827592, now seen corresponding path program 30 times [2020-10-16 12:27:44,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:27:44,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825740240] [2020-10-16 12:27:44,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:27:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:27:44,955 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:27:44,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825740240] [2020-10-16 12:27:44,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644245702] [2020-10-16 12:27:44,955 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:23,122 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2020-10-16 12:28:23,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:23,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 35 conjunts are in the unsatisfiable core [2020-10-16 12:28:23,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:23,594 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:28:23,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:23,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-10-16 12:28:23,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [641053424] [2020-10-16 12:28:23,595 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:23,603 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:23,643 INFO L258 McrAutomatonBuilder]: Finished intersection with 43 states and 42 transitions. [2020-10-16 12:28:23,644 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:23,644 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:23,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-16 12:28:23,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:23,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-16 12:28:23,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=705, Unknown=0, NotChecked=0, Total=1406 [2020-10-16 12:28:23,646 INFO L87 Difference]: Start difference. First operand 78 states and 124 transitions. Second operand 36 states. [2020-10-16 12:28:23,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:23,705 INFO L93 Difference]: Finished difference Result 79 states and 125 transitions. [2020-10-16 12:28:23,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-16 12:28:23,709 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 42 [2020-10-16 12:28:23,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:23,710 INFO L225 Difference]: With dead ends: 79 [2020-10-16 12:28:23,710 INFO L226 Difference]: Without dead ends: 79 [2020-10-16 12:28:23,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=701, Invalid=705, Unknown=0, NotChecked=0, Total=1406 [2020-10-16 12:28:23,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-16 12:28:23,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-16 12:28:23,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-16 12:28:23,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 125 transitions. [2020-10-16 12:28:23,713 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 125 transitions. Word has length 42 [2020-10-16 12:28:23,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:23,713 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 125 transitions. [2020-10-16 12:28:23,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-16 12:28:23,714 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 125 transitions. [2020-10-16 12:28:23,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-16 12:28:23,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:23,714 INFO L422 BasicCegarLoop]: trace histogram [34, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:28:23,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:28:23,923 INFO L429 AbstractCegarLoop]: === Iteration 37 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:28:23,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:23,923 INFO L82 PathProgramCache]: Analyzing trace with hash -794540081, now seen corresponding path program 31 times [2020-10-16 12:28:23,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:23,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493507413] [2020-10-16 12:28:23,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:24,665 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:28:24,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493507413] [2020-10-16 12:28:24,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571037107] [2020-10-16 12:28:24,666 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:24,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:24,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 36 conjunts are in the unsatisfiable core [2020-10-16 12:28:24,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:28:24,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:24,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 38 [2020-10-16 12:28:24,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2049960449] [2020-10-16 12:28:24,768 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:24,779 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:24,805 INFO L258 McrAutomatonBuilder]: Finished intersection with 44 states and 43 transitions. [2020-10-16 12:28:24,805 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:24,806 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:24,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-16 12:28:24,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:24,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-16 12:28:24,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=739, Invalid=743, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:28:24,807 INFO L87 Difference]: Start difference. First operand 79 states and 125 transitions. Second operand 37 states. [2020-10-16 12:28:24,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:24,880 INFO L93 Difference]: Finished difference Result 80 states and 126 transitions. [2020-10-16 12:28:24,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-16 12:28:24,880 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 43 [2020-10-16 12:28:24,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:24,881 INFO L225 Difference]: With dead ends: 80 [2020-10-16 12:28:24,881 INFO L226 Difference]: Without dead ends: 80 [2020-10-16 12:28:24,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=739, Invalid=743, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 12:28:24,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-16 12:28:24,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-16 12:28:24,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-16 12:28:24,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 126 transitions. [2020-10-16 12:28:24,884 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 126 transitions. Word has length 43 [2020-10-16 12:28:24,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:24,884 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 126 transitions. [2020-10-16 12:28:24,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-16 12:28:24,885 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 126 transitions. [2020-10-16 12:28:24,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-16 12:28:24,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:24,885 INFO L422 BasicCegarLoop]: trace histogram [35, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:28:25,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-16 12:28:25,094 INFO L429 AbstractCegarLoop]: === Iteration 38 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:28:25,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:25,094 INFO L82 PathProgramCache]: Analyzing trace with hash -289627240, now seen corresponding path program 32 times [2020-10-16 12:28:25,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:25,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168080340] [2020-10-16 12:28:25,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:25,877 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:28:25,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168080340] [2020-10-16 12:28:25,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638174504] [2020-10-16 12:28:25,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:25,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:28:25,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:25,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 37 conjunts are in the unsatisfiable core [2020-10-16 12:28:25,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:26,001 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:28:26,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:26,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2020-10-16 12:28:26,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1925284514] [2020-10-16 12:28:26,002 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:26,014 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:26,037 INFO L258 McrAutomatonBuilder]: Finished intersection with 45 states and 44 transitions. [2020-10-16 12:28:26,038 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:26,038 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:26,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-16 12:28:26,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:26,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-16 12:28:26,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=778, Invalid=782, Unknown=0, NotChecked=0, Total=1560 [2020-10-16 12:28:26,040 INFO L87 Difference]: Start difference. First operand 80 states and 126 transitions. Second operand 38 states. [2020-10-16 12:28:26,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:26,102 INFO L93 Difference]: Finished difference Result 81 states and 127 transitions. [2020-10-16 12:28:26,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-16 12:28:26,102 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 44 [2020-10-16 12:28:26,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:26,103 INFO L225 Difference]: With dead ends: 81 [2020-10-16 12:28:26,103 INFO L226 Difference]: Without dead ends: 81 [2020-10-16 12:28:26,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=778, Invalid=782, Unknown=0, NotChecked=0, Total=1560 [2020-10-16 12:28:26,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-16 12:28:26,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-16 12:28:26,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-16 12:28:26,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 127 transitions. [2020-10-16 12:28:26,107 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 127 transitions. Word has length 44 [2020-10-16 12:28:26,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:26,108 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 127 transitions. [2020-10-16 12:28:26,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-16 12:28:26,108 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 127 transitions. [2020-10-16 12:28:26,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-16 12:28:26,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:26,109 INFO L422 BasicCegarLoop]: trace histogram [36, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:28:26,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-10-16 12:28:26,321 INFO L429 AbstractCegarLoop]: === Iteration 39 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:28:26,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:26,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1817198353, now seen corresponding path program 33 times [2020-10-16 12:28:26,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:26,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997027099] [2020-10-16 12:28:26,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:27,130 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:28:27,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997027099] [2020-10-16 12:28:27,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44571237] [2020-10-16 12:28:27,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:34,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2020-10-16 12:28:34,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:34,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 38 conjunts are in the unsatisfiable core [2020-10-16 12:28:34,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:34,944 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:28:34,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:34,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 40 [2020-10-16 12:28:34,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [273535671] [2020-10-16 12:28:34,945 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:34,957 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:34,983 INFO L258 McrAutomatonBuilder]: Finished intersection with 46 states and 45 transitions. [2020-10-16 12:28:34,983 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:34,984 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:34,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-16 12:28:34,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:34,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-16 12:28:34,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=818, Invalid=822, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 12:28:34,986 INFO L87 Difference]: Start difference. First operand 81 states and 127 transitions. Second operand 39 states. [2020-10-16 12:28:35,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:35,053 INFO L93 Difference]: Finished difference Result 82 states and 128 transitions. [2020-10-16 12:28:35,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-16 12:28:35,054 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 45 [2020-10-16 12:28:35,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:35,055 INFO L225 Difference]: With dead ends: 82 [2020-10-16 12:28:35,055 INFO L226 Difference]: Without dead ends: 82 [2020-10-16 12:28:35,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=818, Invalid=822, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 12:28:35,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-16 12:28:35,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-16 12:28:35,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-16 12:28:35,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 128 transitions. [2020-10-16 12:28:35,058 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 128 transitions. Word has length 45 [2020-10-16 12:28:35,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:35,059 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 128 transitions. [2020-10-16 12:28:35,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-16 12:28:35,059 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 128 transitions. [2020-10-16 12:28:35,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-16 12:28:35,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:35,059 INFO L422 BasicCegarLoop]: trace histogram [37, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:28:35,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-16 12:28:35,269 INFO L429 AbstractCegarLoop]: === Iteration 40 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:28:35,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:35,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1927262600, now seen corresponding path program 34 times [2020-10-16 12:28:35,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:35,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965551405] [2020-10-16 12:28:35,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:36,186 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:28:36,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965551405] [2020-10-16 12:28:36,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112675927] [2020-10-16 12:28:36,187 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:28:36,257 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:28:36,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:28:36,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 39 conjunts are in the unsatisfiable core [2020-10-16 12:28:36,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:28:36,296 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:28:36,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:28:36,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2020-10-16 12:28:36,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [660124602] [2020-10-16 12:28:36,297 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:28:36,308 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:28:36,375 INFO L258 McrAutomatonBuilder]: Finished intersection with 47 states and 46 transitions. [2020-10-16 12:28:36,375 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:28:36,376 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:28:36,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-16 12:28:36,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:28:36,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-16 12:28:36,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=859, Invalid=863, Unknown=0, NotChecked=0, Total=1722 [2020-10-16 12:28:36,377 INFO L87 Difference]: Start difference. First operand 82 states and 128 transitions. Second operand 40 states. [2020-10-16 12:28:36,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:28:36,454 INFO L93 Difference]: Finished difference Result 83 states and 129 transitions. [2020-10-16 12:28:36,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-16 12:28:36,455 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 46 [2020-10-16 12:28:36,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:28:36,456 INFO L225 Difference]: With dead ends: 83 [2020-10-16 12:28:36,457 INFO L226 Difference]: Without dead ends: 83 [2020-10-16 12:28:36,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=859, Invalid=863, Unknown=0, NotChecked=0, Total=1722 [2020-10-16 12:28:36,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-16 12:28:36,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-16 12:28:36,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-16 12:28:36,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 129 transitions. [2020-10-16 12:28:36,460 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 129 transitions. Word has length 46 [2020-10-16 12:28:36,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:28:36,461 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 129 transitions. [2020-10-16 12:28:36,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-16 12:28:36,461 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 129 transitions. [2020-10-16 12:28:36,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-16 12:28:36,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:28:36,462 INFO L422 BasicCegarLoop]: trace histogram [38, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:28:36,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-16 12:28:36,662 INFO L429 AbstractCegarLoop]: === Iteration 41 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:28:36,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:28:36,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1044286961, now seen corresponding path program 35 times [2020-10-16 12:28:36,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:28:36,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440111863] [2020-10-16 12:28:36,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:28:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:28:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:28:37,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440111863] [2020-10-16 12:28:37,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896310879] [2020-10-16 12:28:37,761 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:01,552 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2020-10-16 12:29:01,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:01,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 40 conjunts are in the unsatisfiable core [2020-10-16 12:29:01,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:01,821 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:29:01,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:01,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 42 [2020-10-16 12:29:01,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1453988120] [2020-10-16 12:29:01,822 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:01,832 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:01,861 INFO L258 McrAutomatonBuilder]: Finished intersection with 48 states and 47 transitions. [2020-10-16 12:29:01,862 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:01,862 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:01,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-16 12:29:01,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:01,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-16 12:29:01,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=901, Invalid=905, Unknown=0, NotChecked=0, Total=1806 [2020-10-16 12:29:01,864 INFO L87 Difference]: Start difference. First operand 83 states and 129 transitions. Second operand 41 states. [2020-10-16 12:29:01,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:01,921 INFO L93 Difference]: Finished difference Result 84 states and 130 transitions. [2020-10-16 12:29:01,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-16 12:29:01,921 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 47 [2020-10-16 12:29:01,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:01,922 INFO L225 Difference]: With dead ends: 84 [2020-10-16 12:29:01,922 INFO L226 Difference]: Without dead ends: 84 [2020-10-16 12:29:01,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=901, Invalid=905, Unknown=0, NotChecked=0, Total=1806 [2020-10-16 12:29:01,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-16 12:29:01,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-16 12:29:01,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-16 12:29:01,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 130 transitions. [2020-10-16 12:29:01,925 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 130 transitions. Word has length 47 [2020-10-16 12:29:01,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:01,925 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 130 transitions. [2020-10-16 12:29:01,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-16 12:29:01,926 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 130 transitions. [2020-10-16 12:29:01,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-16 12:29:01,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:01,926 INFO L422 BasicCegarLoop]: trace histogram [39, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:29:02,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:02,127 INFO L429 AbstractCegarLoop]: === Iteration 42 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:29:02,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:02,128 INFO L82 PathProgramCache]: Analyzing trace with hash 558154072, now seen corresponding path program 36 times [2020-10-16 12:29:02,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:02,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675992148] [2020-10-16 12:29:02,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:03,443 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:29:03,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675992148] [2020-10-16 12:29:03,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507092035] [2020-10-16 12:29:03,443 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:05,768 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2020-10-16 12:29:05,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:05,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 41 conjunts are in the unsatisfiable core [2020-10-16 12:29:05,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:29:05,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:05,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2020-10-16 12:29:05,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [226967375] [2020-10-16 12:29:05,823 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:05,832 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:05,861 INFO L258 McrAutomatonBuilder]: Finished intersection with 49 states and 48 transitions. [2020-10-16 12:29:05,862 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:05,862 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:05,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-16 12:29:05,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:05,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-16 12:29:05,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=944, Invalid=948, Unknown=0, NotChecked=0, Total=1892 [2020-10-16 12:29:05,864 INFO L87 Difference]: Start difference. First operand 84 states and 130 transitions. Second operand 42 states. [2020-10-16 12:29:05,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:05,932 INFO L93 Difference]: Finished difference Result 85 states and 131 transitions. [2020-10-16 12:29:05,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-16 12:29:05,933 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 48 [2020-10-16 12:29:05,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:05,934 INFO L225 Difference]: With dead ends: 85 [2020-10-16 12:29:05,934 INFO L226 Difference]: Without dead ends: 85 [2020-10-16 12:29:05,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=944, Invalid=948, Unknown=0, NotChecked=0, Total=1892 [2020-10-16 12:29:05,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-16 12:29:05,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-16 12:29:05,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-16 12:29:05,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 131 transitions. [2020-10-16 12:29:05,937 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 131 transitions. Word has length 48 [2020-10-16 12:29:05,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:05,938 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 131 transitions. [2020-10-16 12:29:05,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-16 12:29:05,938 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 131 transitions. [2020-10-16 12:29:05,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-16 12:29:05,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:05,938 INFO L422 BasicCegarLoop]: trace histogram [40, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:29:06,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-10-16 12:29:06,139 INFO L429 AbstractCegarLoop]: === Iteration 43 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:29:06,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:06,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1305781457, now seen corresponding path program 37 times [2020-10-16 12:29:06,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:06,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694278103] [2020-10-16 12:29:06,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:07,151 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:29:07,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694278103] [2020-10-16 12:29:07,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060448258] [2020-10-16 12:29:07,152 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:07,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 42 conjunts are in the unsatisfiable core [2020-10-16 12:29:07,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:07,259 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:29:07,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:07,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 44 [2020-10-16 12:29:07,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1076288616] [2020-10-16 12:29:07,260 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:07,266 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:07,299 INFO L258 McrAutomatonBuilder]: Finished intersection with 50 states and 49 transitions. [2020-10-16 12:29:07,300 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:07,301 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:07,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-16 12:29:07,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:07,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-16 12:29:07,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=988, Invalid=992, Unknown=0, NotChecked=0, Total=1980 [2020-10-16 12:29:07,302 INFO L87 Difference]: Start difference. First operand 85 states and 131 transitions. Second operand 43 states. [2020-10-16 12:29:07,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:07,374 INFO L93 Difference]: Finished difference Result 86 states and 132 transitions. [2020-10-16 12:29:07,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-16 12:29:07,375 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 49 [2020-10-16 12:29:07,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:07,376 INFO L225 Difference]: With dead ends: 86 [2020-10-16 12:29:07,376 INFO L226 Difference]: Without dead ends: 86 [2020-10-16 12:29:07,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=988, Invalid=992, Unknown=0, NotChecked=0, Total=1980 [2020-10-16 12:29:07,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-16 12:29:07,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-10-16 12:29:07,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-16 12:29:07,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 132 transitions. [2020-10-16 12:29:07,380 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 132 transitions. Word has length 49 [2020-10-16 12:29:07,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:07,381 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 132 transitions. [2020-10-16 12:29:07,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-16 12:29:07,381 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 132 transitions. [2020-10-16 12:29:07,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-16 12:29:07,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:07,382 INFO L422 BasicCegarLoop]: trace histogram [41, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:29:07,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:07,592 INFO L429 AbstractCegarLoop]: === Iteration 44 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:29:07,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:07,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1041759288, now seen corresponding path program 38 times [2020-10-16 12:29:07,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:07,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365888818] [2020-10-16 12:29:07,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:08,881 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:29:08,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365888818] [2020-10-16 12:29:08,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178434060] [2020-10-16 12:29:08,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:08,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:29:08,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:08,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 43 conjunts are in the unsatisfiable core [2020-10-16 12:29:08,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:09,041 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:29:09,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:09,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2020-10-16 12:29:09,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1608543996] [2020-10-16 12:29:09,042 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:09,063 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:09,105 INFO L258 McrAutomatonBuilder]: Finished intersection with 51 states and 50 transitions. [2020-10-16 12:29:09,106 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:09,106 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:09,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-16 12:29:09,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:09,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-16 12:29:09,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1033, Invalid=1037, Unknown=0, NotChecked=0, Total=2070 [2020-10-16 12:29:09,108 INFO L87 Difference]: Start difference. First operand 86 states and 132 transitions. Second operand 44 states. [2020-10-16 12:29:09,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:09,184 INFO L93 Difference]: Finished difference Result 87 states and 133 transitions. [2020-10-16 12:29:09,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-16 12:29:09,185 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 50 [2020-10-16 12:29:09,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:09,186 INFO L225 Difference]: With dead ends: 87 [2020-10-16 12:29:09,186 INFO L226 Difference]: Without dead ends: 87 [2020-10-16 12:29:09,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1033, Invalid=1037, Unknown=0, NotChecked=0, Total=2070 [2020-10-16 12:29:09,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-16 12:29:09,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-16 12:29:09,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-16 12:29:09,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 133 transitions. [2020-10-16 12:29:09,189 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 133 transitions. Word has length 50 [2020-10-16 12:29:09,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:09,190 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 133 transitions. [2020-10-16 12:29:09,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-16 12:29:09,190 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 133 transitions. [2020-10-16 12:29:09,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-16 12:29:09,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:09,191 INFO L422 BasicCegarLoop]: trace histogram [42, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:29:09,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:09,402 INFO L429 AbstractCegarLoop]: === Iteration 45 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:29:09,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:09,403 INFO L82 PathProgramCache]: Analyzing trace with hash 801078351, now seen corresponding path program 39 times [2020-10-16 12:29:09,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:09,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418593454] [2020-10-16 12:29:09,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:10,514 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:29:10,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418593454] [2020-10-16 12:29:10,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143850989] [2020-10-16 12:29:10,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:29:32,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2020-10-16 12:29:32,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:32,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 44 conjunts are in the unsatisfiable core [2020-10-16 12:29:32,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:32,248 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:29:32,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:32,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 46 [2020-10-16 12:29:32,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [712995166] [2020-10-16 12:29:32,250 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:32,260 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:32,302 INFO L258 McrAutomatonBuilder]: Finished intersection with 52 states and 51 transitions. [2020-10-16 12:29:32,302 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:32,303 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:32,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-16 12:29:32,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:32,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-16 12:29:32,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1079, Invalid=1083, Unknown=0, NotChecked=0, Total=2162 [2020-10-16 12:29:32,304 INFO L87 Difference]: Start difference. First operand 87 states and 133 transitions. Second operand 45 states. [2020-10-16 12:29:32,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:32,368 INFO L93 Difference]: Finished difference Result 88 states and 134 transitions. [2020-10-16 12:29:32,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-16 12:29:32,369 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 51 [2020-10-16 12:29:32,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:32,370 INFO L225 Difference]: With dead ends: 88 [2020-10-16 12:29:32,370 INFO L226 Difference]: Without dead ends: 88 [2020-10-16 12:29:32,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1079, Invalid=1083, Unknown=0, NotChecked=0, Total=2162 [2020-10-16 12:29:32,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-16 12:29:32,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-10-16 12:29:32,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-16 12:29:32,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 134 transitions. [2020-10-16 12:29:32,373 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 134 transitions. Word has length 51 [2020-10-16 12:29:32,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:32,373 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 134 transitions. [2020-10-16 12:29:32,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-16 12:29:32,374 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 134 transitions. [2020-10-16 12:29:32,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-16 12:29:32,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:32,374 INFO L422 BasicCegarLoop]: trace histogram [43, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:29:32,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-10-16 12:29:32,584 INFO L429 AbstractCegarLoop]: === Iteration 46 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:29:32,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:32,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1929903896, now seen corresponding path program 40 times [2020-10-16 12:29:32,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:32,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731554693] [2020-10-16 12:29:32,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:33,754 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:29:33,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731554693] [2020-10-16 12:29:33,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296662269] [2020-10-16 12:29:33,755 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:29:33,827 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 12:29:33,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:29:33,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 45 conjunts are in the unsatisfiable core [2020-10-16 12:29:33,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:29:33,862 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:29:33,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:29:33,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2020-10-16 12:29:33,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1728934102] [2020-10-16 12:29:33,863 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:29:33,870 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:29:33,902 INFO L258 McrAutomatonBuilder]: Finished intersection with 53 states and 52 transitions. [2020-10-16 12:29:33,902 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:29:33,903 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:29:33,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-16 12:29:33,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:29:33,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-16 12:29:33,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1126, Invalid=1130, Unknown=0, NotChecked=0, Total=2256 [2020-10-16 12:29:33,903 INFO L87 Difference]: Start difference. First operand 88 states and 134 transitions. Second operand 46 states. [2020-10-16 12:29:33,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:29:33,982 INFO L93 Difference]: Finished difference Result 89 states and 135 transitions. [2020-10-16 12:29:33,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-16 12:29:33,983 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 52 [2020-10-16 12:29:33,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:29:33,984 INFO L225 Difference]: With dead ends: 89 [2020-10-16 12:29:33,984 INFO L226 Difference]: Without dead ends: 89 [2020-10-16 12:29:33,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1126, Invalid=1130, Unknown=0, NotChecked=0, Total=2256 [2020-10-16 12:29:33,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-16 12:29:33,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-10-16 12:29:33,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-16 12:29:33,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 135 transitions. [2020-10-16 12:29:33,987 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 135 transitions. Word has length 52 [2020-10-16 12:29:33,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:29:33,987 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 135 transitions. [2020-10-16 12:29:33,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-16 12:29:33,988 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 135 transitions. [2020-10-16 12:29:33,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-16 12:29:33,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:29:33,988 INFO L422 BasicCegarLoop]: trace histogram [44, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:29:34,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-16 12:29:34,197 INFO L429 AbstractCegarLoop]: === Iteration 47 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:29:34,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:29:34,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1731209873, now seen corresponding path program 41 times [2020-10-16 12:29:34,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:29:34,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886892292] [2020-10-16 12:29:34,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:29:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:29:35,442 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:29:35,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886892292] [2020-10-16 12:29:35,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020003782] [2020-10-16 12:29:35,442 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:30:25,624 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2020-10-16 12:30:25,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:30:26,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 46 conjunts are in the unsatisfiable core [2020-10-16 12:30:26,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:30:26,844 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:30:26,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:30:26,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 48 [2020-10-16 12:30:26,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1342747107] [2020-10-16 12:30:26,845 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:30:26,856 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:30:26,891 INFO L258 McrAutomatonBuilder]: Finished intersection with 54 states and 53 transitions. [2020-10-16 12:30:26,891 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:30:26,892 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:30:26,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-16 12:30:26,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:30:26,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-16 12:30:26,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1174, Invalid=1178, Unknown=0, NotChecked=0, Total=2352 [2020-10-16 12:30:26,893 INFO L87 Difference]: Start difference. First operand 89 states and 135 transitions. Second operand 47 states. [2020-10-16 12:30:26,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:30:26,969 INFO L93 Difference]: Finished difference Result 90 states and 136 transitions. [2020-10-16 12:30:26,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-16 12:30:26,970 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 53 [2020-10-16 12:30:26,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:30:26,971 INFO L225 Difference]: With dead ends: 90 [2020-10-16 12:30:26,971 INFO L226 Difference]: Without dead ends: 90 [2020-10-16 12:30:26,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1174, Invalid=1178, Unknown=0, NotChecked=0, Total=2352 [2020-10-16 12:30:26,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-16 12:30:26,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-10-16 12:30:26,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-16 12:30:26,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 136 transitions. [2020-10-16 12:30:26,975 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 136 transitions. Word has length 53 [2020-10-16 12:30:26,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:30:26,975 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 136 transitions. [2020-10-16 12:30:26,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-16 12:30:26,975 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 136 transitions. [2020-10-16 12:30:26,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-16 12:30:26,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:30:26,976 INFO L422 BasicCegarLoop]: trace histogram [45, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 12:30:27,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-10-16 12:30:27,187 INFO L429 AbstractCegarLoop]: === Iteration 48 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:30:27,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:30:27,187 INFO L82 PathProgramCache]: Analyzing trace with hash 738380280, now seen corresponding path program 42 times [2020-10-16 12:30:27,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:30:27,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486197407] [2020-10-16 12:30:27,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:30:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:30:28,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 12:30:28,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486197407] [2020-10-16 12:30:28,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799595974] [2020-10-16 12:30:28,458 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown