/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf -i ../../../trunk/examples/svcomp/pthread-lit/fkp2013_variant-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 02:24:41,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 02:24:41,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 02:24:41,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 02:24:41,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 02:24:41,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 02:24:41,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 02:24:41,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 02:24:41,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 02:24:41,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 02:24:41,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 02:24:41,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 02:24:41,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 02:24:41,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 02:24:41,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 02:24:41,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 02:24:41,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 02:24:41,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 02:24:41,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 02:24:41,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 02:24:41,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 02:24:41,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 02:24:41,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 02:24:41,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 02:24:41,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-22 02:24:41,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 02:24:41,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 02:24:41,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 02:24:41,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 02:24:41,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 02:24:41,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 02:24:41,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 02:24:41,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 02:24:41,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 02:24:41,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 02:24:41,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 02:24:41,535 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-10-22 02:24:41,581 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 02:24:41,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 02:24:41,583 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 02:24:41,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 02:24:41,584 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 02:24:41,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 02:24:41,584 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 02:24:41,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 02:24:41,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 02:24:41,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 02:24:41,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 02:24:41,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 02:24:41,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 02:24:41,587 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 02:24:41,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 02:24:41,588 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 02:24:41,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 02:24:41,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 02:24:41,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 02:24:41,590 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 02:24:41,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 02:24:41,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 02:24:41,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 02:24:41,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 02:24:41,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 02:24:41,592 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 02:24:41,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 02:24:41,592 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 02:24:41,593 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 02:24:41,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 02:24:41,593 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 02:24:41,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 02:24:41,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 02:24:41,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 02:24:41,905 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 02:24:41,906 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 02:24:41,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/fkp2013_variant-1.i [2020-10-22 02:24:41,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4b24e01d/e9b4c712a44c43e3a706a07d029cdf7d/FLAGa05cb455c [2020-10-22 02:24:42,451 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 02:24:42,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013_variant-1.i [2020-10-22 02:24:42,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4b24e01d/e9b4c712a44c43e3a706a07d029cdf7d/FLAGa05cb455c [2020-10-22 02:24:42,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4b24e01d/e9b4c712a44c43e3a706a07d029cdf7d [2020-10-22 02:24:42,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 02:24:42,793 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 02:24:42,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 02:24:42,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 02:24:42,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 02:24:42,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:24:42" (1/1) ... [2020-10-22 02:24:42,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@429c6247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:42, skipping insertion in model container [2020-10-22 02:24:42,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:24:42" (1/1) ... [2020-10-22 02:24:42,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 02:24:42,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 02:24:43,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:24:43,316 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 02:24:43,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:24:43,445 INFO L208 MainTranslator]: Completed translation [2020-10-22 02:24:43,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:43 WrapperNode [2020-10-22 02:24:43,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 02:24:43,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 02:24:43,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 02:24:43,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 02:24:43,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:43" (1/1) ... [2020-10-22 02:24:43,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:43" (1/1) ... [2020-10-22 02:24:43,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 02:24:43,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 02:24:43,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 02:24:43,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 02:24:43,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:43" (1/1) ... [2020-10-22 02:24:43,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:43" (1/1) ... [2020-10-22 02:24:43,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:43" (1/1) ... [2020-10-22 02:24:43,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:43" (1/1) ... [2020-10-22 02:24:43,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:43" (1/1) ... [2020-10-22 02:24:43,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:43" (1/1) ... [2020-10-22 02:24:43,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:43" (1/1) ... [2020-10-22 02:24:43,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 02:24:43,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 02:24:43,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 02:24:43,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 02:24:43,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 02:24:43,600 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-22 02:24:43,600 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-22 02:24:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-22 02:24:43,601 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-22 02:24:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 02:24:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 02:24:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 02:24:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 02:24:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 02:24:43,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 02:24:43,603 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 02:24:43,991 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 02:24:43,991 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-22 02:24:43,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:24:43 BoogieIcfgContainer [2020-10-22 02:24:43,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 02:24:43,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 02:24:43,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 02:24:43,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 02:24:43,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 02:24:42" (1/3) ... [2020-10-22 02:24:43,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5daa8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:24:43, skipping insertion in model container [2020-10-22 02:24:44,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:43" (2/3) ... [2020-10-22 02:24:44,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5daa8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:24:44, skipping insertion in model container [2020-10-22 02:24:44,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:24:43" (3/3) ... [2020-10-22 02:24:44,002 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2013_variant-1.i [2020-10-22 02:24:44,015 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 02:24:44,015 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 02:24:44,023 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 02:24:44,025 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 02:24:44,058 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,059 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,059 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,060 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,060 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,060 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,061 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,061 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,061 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,063 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,063 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,063 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,064 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,064 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,065 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,065 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,065 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,065 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,066 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,066 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,067 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,067 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,068 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,069 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,069 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,076 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,077 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,091 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,091 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,092 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,092 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,092 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:44,098 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 02:24:44,114 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-22 02:24:44,139 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 02:24:44,139 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 02:24:44,139 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 02:24:44,139 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 02:24:44,140 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 02:24:44,140 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 02:24:44,140 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 02:24:44,140 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 02:24:44,153 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 02:24:44,153 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 70 transitions, 150 flow [2020-10-22 02:24:44,155 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 70 transitions, 150 flow [2020-10-22 02:24:44,157 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 70 transitions, 150 flow [2020-10-22 02:24:44,209 INFO L129 PetriNetUnfolder]: 5/80 cut-off events. [2020-10-22 02:24:44,210 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 02:24:44,216 INFO L80 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 80 events. 5/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 59. Up to 4 conditions per place. [2020-10-22 02:24:44,219 INFO L116 LiptonReduction]: Number of co-enabled transitions 942 [2020-10-22 02:24:46,263 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2020-10-22 02:24:46,421 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-22 02:24:46,424 INFO L131 LiptonReduction]: Checked pairs total: 919 [2020-10-22 02:24:46,424 INFO L133 LiptonReduction]: Total number of compositions: 73 [2020-10-22 02:24:46,436 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-10-22 02:24:46,454 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-22 02:24:46,456 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-22 02:24:46,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-22 02:24:46,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:46,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-22 02:24:46,466 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 02:24:46,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:46,473 INFO L82 PathProgramCache]: Analyzing trace with hash 283649, now seen corresponding path program 1 times [2020-10-22 02:24:46,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:46,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640341200] [2020-10-22 02:24:46,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:46,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:46,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640341200] [2020-10-22 02:24:46,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:24:46,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 02:24:46,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1036736086] [2020-10-22 02:24:46,683 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:46,685 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:46,697 INFO L252 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-10-22 02:24:46,698 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:46,702 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:24:46,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:24:46,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:46,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:24:46,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:24:46,721 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-22 02:24:46,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:46,748 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-10-22 02:24:46,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:24:46,750 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-22 02:24:46,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:46,759 INFO L225 Difference]: With dead ends: 35 [2020-10-22 02:24:46,760 INFO L226 Difference]: Without dead ends: 31 [2020-10-22 02:24:46,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:24:46,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-22 02:24:46,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-22 02:24:46,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-22 02:24:46,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-10-22 02:24:46,798 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-10-22 02:24:46,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:46,798 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-10-22 02:24:46,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:24:46,799 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-10-22 02:24:46,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-22 02:24:46,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:46,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:46,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 02:24:46,800 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 02:24:46,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:46,801 INFO L82 PathProgramCache]: Analyzing trace with hash -68679350, now seen corresponding path program 1 times [2020-10-22 02:24:46,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:46,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635486313] [2020-10-22 02:24:46,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:46,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:46,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635486313] [2020-10-22 02:24:46,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:24:46,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:24:46,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1190839925] [2020-10-22 02:24:46,912 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:46,913 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:46,916 INFO L252 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-10-22 02:24:46,917 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:46,917 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:24:46,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:24:46,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:46,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:24:46,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:24:46,919 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-10-22 02:24:46,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:46,942 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-10-22 02:24:46,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 02:24:46,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-22 02:24:46,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:46,943 INFO L225 Difference]: With dead ends: 26 [2020-10-22 02:24:46,943 INFO L226 Difference]: Without dead ends: 24 [2020-10-22 02:24:46,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:24:46,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-22 02:24:46,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-22 02:24:46,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-22 02:24:46,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-10-22 02:24:46,949 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-10-22 02:24:46,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:46,949 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-10-22 02:24:46,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:24:46,949 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-10-22 02:24:46,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 02:24:46,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:46,950 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:46,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 02:24:46,951 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 02:24:46,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:46,951 INFO L82 PathProgramCache]: Analyzing trace with hash -2129054148, now seen corresponding path program 1 times [2020-10-22 02:24:46,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:46,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851670204] [2020-10-22 02:24:46,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 02:24:46,982 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 02:24:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 02:24:47,011 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 02:24:47,056 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-22 02:24:47,056 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-22 02:24:47,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 02:24:47,057 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-22 02:24:47,059 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-22 02:24:47,059 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-22 02:24:47,074 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,074 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,074 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,075 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,077 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,077 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,077 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,077 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,077 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,078 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,078 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,079 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,079 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,079 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,079 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,079 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,080 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,080 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,082 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,082 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,083 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,083 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,083 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,084 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,084 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,085 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,085 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,085 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,085 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,086 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,086 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,089 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,090 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,090 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,090 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,090 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,091 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,091 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,091 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,091 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,091 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,095 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,095 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,095 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,096 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,096 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,096 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,096 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,102 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,103 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,103 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,103 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,103 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,113 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,114 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,114 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,114 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,114 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:47,116 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 02:24:47,116 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-22 02:24:47,116 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 02:24:47,116 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 02:24:47,117 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 02:24:47,117 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 02:24:47,117 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 02:24:47,117 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 02:24:47,117 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 02:24:47,117 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 02:24:47,122 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 02:24:47,122 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 93 transitions, 210 flow [2020-10-22 02:24:47,122 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 93 transitions, 210 flow [2020-10-22 02:24:47,122 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 93 transitions, 210 flow [2020-10-22 02:24:47,178 INFO L129 PetriNetUnfolder]: 6/102 cut-off events. [2020-10-22 02:24:47,178 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-22 02:24:47,179 INFO L80 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 102 events. 6/102 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 159 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 111. Up to 6 conditions per place. [2020-10-22 02:24:47,182 INFO L116 LiptonReduction]: Number of co-enabled transitions 1428 [2020-10-22 02:24:48,809 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-22 02:24:49,272 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2020-10-22 02:24:49,419 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-22 02:24:49,424 INFO L131 LiptonReduction]: Checked pairs total: 1748 [2020-10-22 02:24:49,424 INFO L133 LiptonReduction]: Total number of compositions: 93 [2020-10-22 02:24:49,425 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-10-22 02:24:49,437 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-10-22 02:24:49,438 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-10-22 02:24:49,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-22 02:24:49,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:49,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-22 02:24:49,439 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:24:49,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:49,439 INFO L82 PathProgramCache]: Analyzing trace with hash 490502, now seen corresponding path program 1 times [2020-10-22 02:24:49,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:49,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959856463] [2020-10-22 02:24:49,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:49,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:49,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959856463] [2020-10-22 02:24:49,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:24:49,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 02:24:49,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [806923071] [2020-10-22 02:24:49,498 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:49,499 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:49,499 INFO L252 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-10-22 02:24:49,500 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:49,500 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:24:49,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:24:49,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:49,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:24:49,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:24:49,501 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-10-22 02:24:49,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:49,539 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-10-22 02:24:49,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:24:49,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-22 02:24:49,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:49,545 INFO L225 Difference]: With dead ends: 185 [2020-10-22 02:24:49,545 INFO L226 Difference]: Without dead ends: 171 [2020-10-22 02:24:49,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:24:49,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-22 02:24:49,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-22 02:24:49,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-22 02:24:49,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-10-22 02:24:49,577 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-10-22 02:24:49,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:49,577 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-10-22 02:24:49,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:24:49,578 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-10-22 02:24:49,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 02:24:49,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:49,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:49,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 02:24:49,579 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:24:49,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:49,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1141253342, now seen corresponding path program 1 times [2020-10-22 02:24:49,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:49,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79141981] [2020-10-22 02:24:49,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:49,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:49,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79141981] [2020-10-22 02:24:49,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:24:49,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:24:49,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [907068750] [2020-10-22 02:24:49,686 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:49,687 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:49,689 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-22 02:24:49,689 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:49,689 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:24:49,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:24:49,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:49,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:24:49,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:24:49,690 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-10-22 02:24:49,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:49,793 INFO L93 Difference]: Finished difference Result 225 states and 491 transitions. [2020-10-22 02:24:49,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 02:24:49,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-22 02:24:49,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:49,796 INFO L225 Difference]: With dead ends: 225 [2020-10-22 02:24:49,796 INFO L226 Difference]: Without dead ends: 221 [2020-10-22 02:24:49,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:24:49,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-22 02:24:49,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 162. [2020-10-22 02:24:49,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-22 02:24:49,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-10-22 02:24:49,819 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-10-22 02:24:49,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:49,819 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-10-22 02:24:49,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:24:49,820 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-10-22 02:24:49,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 02:24:49,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:49,821 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:49,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 02:24:49,822 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:24:49,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:49,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1991641480, now seen corresponding path program 1 times [2020-10-22 02:24:49,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:49,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526582413] [2020-10-22 02:24:49,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:49,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 02:24:49,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526582413] [2020-10-22 02:24:49,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:24:49,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:24:49,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1066399296] [2020-10-22 02:24:49,879 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:49,880 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:49,883 INFO L252 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-22 02:24:49,883 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:49,898 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:24:49,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:24:49,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:49,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:24:49,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:24:49,899 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-10-22 02:24:49,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:49,998 INFO L93 Difference]: Finished difference Result 213 states and 458 transitions. [2020-10-22 02:24:49,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 02:24:49,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-22 02:24:49,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:50,001 INFO L225 Difference]: With dead ends: 213 [2020-10-22 02:24:50,002 INFO L226 Difference]: Without dead ends: 209 [2020-10-22 02:24:50,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:24:50,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-22 02:24:50,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 153. [2020-10-22 02:24:50,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-22 02:24:50,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-10-22 02:24:50,019 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-10-22 02:24:50,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:50,020 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-10-22 02:24:50,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:24:50,021 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-10-22 02:24:50,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-22 02:24:50,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:50,022 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:50,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 02:24:50,023 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:24:50,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:50,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1615436759, now seen corresponding path program 1 times [2020-10-22 02:24:50,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:50,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090943759] [2020-10-22 02:24:50,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 02:24:50,043 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 02:24:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 02:24:50,056 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 02:24:50,063 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-22 02:24:50,063 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-22 02:24:50,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 02:24:50,064 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-22 02:24:50,065 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-22 02:24:50,066 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-22 02:24:50,079 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,080 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,080 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,080 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,080 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,081 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,081 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,081 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,081 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,081 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,081 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,082 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,083 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,083 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,083 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,083 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,083 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,083 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,084 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,084 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,084 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,084 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,085 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,085 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,085 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,085 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,085 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,085 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,086 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,086 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,086 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,087 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,087 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,087 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,087 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,087 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,089 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,089 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,089 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,089 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,089 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,089 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,090 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,090 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,090 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,090 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,090 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,090 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,091 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,091 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,091 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,091 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,091 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,091 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,091 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,092 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,092 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,092 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,092 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,093 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,093 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,093 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,093 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,094 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,096 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,096 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,096 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,096 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,096 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,096 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,097 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,097 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,098 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,098 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,098 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,098 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,099 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,099 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,099 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,099 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,100 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,100 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,100 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,101 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,101 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,102 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,102 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,102 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,102 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,103 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,103 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,104 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,104 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,104 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,104 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:50,105 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 02:24:50,105 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-22 02:24:50,106 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 02:24:50,106 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 02:24:50,106 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 02:24:50,106 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 02:24:50,106 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 02:24:50,106 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 02:24:50,106 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 02:24:50,106 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 02:24:50,108 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 02:24:50,108 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 116 transitions, 274 flow [2020-10-22 02:24:50,109 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 116 transitions, 274 flow [2020-10-22 02:24:50,109 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 122 places, 116 transitions, 274 flow [2020-10-22 02:24:50,145 INFO L129 PetriNetUnfolder]: 7/124 cut-off events. [2020-10-22 02:24:50,145 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-22 02:24:50,148 INFO L80 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 124 events. 7/124 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 216 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 138. Up to 8 conditions per place. [2020-10-22 02:24:50,153 INFO L116 LiptonReduction]: Number of co-enabled transitions 1998 [2020-10-22 02:24:52,400 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2020-10-22 02:24:52,568 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-22 02:24:52,578 INFO L131 LiptonReduction]: Checked pairs total: 2907 [2020-10-22 02:24:52,579 INFO L133 LiptonReduction]: Total number of compositions: 125 [2020-10-22 02:24:52,579 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-10-22 02:24:52,604 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-10-22 02:24:52,605 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-10-22 02:24:52,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-22 02:24:52,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:52,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-22 02:24:52,606 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:24:52,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:52,606 INFO L82 PathProgramCache]: Analyzing trace with hash 750612, now seen corresponding path program 1 times [2020-10-22 02:24:52,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:52,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514697866] [2020-10-22 02:24:52,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:52,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:52,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514697866] [2020-10-22 02:24:52,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:24:52,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 02:24:52,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1819855265] [2020-10-22 02:24:52,633 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:52,634 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:52,634 INFO L252 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-10-22 02:24:52,634 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:52,635 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:24:52,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:24:52,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:52,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:24:52,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:24:52,636 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-10-22 02:24:52,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:52,685 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-10-22 02:24:52,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:24:52,689 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-22 02:24:52,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:52,697 INFO L225 Difference]: With dead ends: 600 [2020-10-22 02:24:52,698 INFO L226 Difference]: Without dead ends: 559 [2020-10-22 02:24:52,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:24:52,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-22 02:24:52,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-10-22 02:24:52,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-22 02:24:52,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-10-22 02:24:52,743 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-10-22 02:24:52,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:52,743 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-10-22 02:24:52,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:24:52,743 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-10-22 02:24:52,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 02:24:52,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:52,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:52,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-22 02:24:52,744 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:24:52,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:52,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1922210467, now seen corresponding path program 1 times [2020-10-22 02:24:52,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:52,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713434879] [2020-10-22 02:24:52,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:52,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:52,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713434879] [2020-10-22 02:24:52,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:24:52,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:24:52,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1058929790] [2020-10-22 02:24:52,791 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:52,792 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:52,793 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-22 02:24:52,793 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:52,793 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:24:52,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:24:52,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:52,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:24:52,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:24:52,795 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-10-22 02:24:52,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:52,889 INFO L93 Difference]: Finished difference Result 933 states and 2580 transitions. [2020-10-22 02:24:52,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 02:24:52,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-22 02:24:52,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:52,897 INFO L225 Difference]: With dead ends: 933 [2020-10-22 02:24:52,897 INFO L226 Difference]: Without dead ends: 928 [2020-10-22 02:24:52,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:24:52,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2020-10-22 02:24:52,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 585. [2020-10-22 02:24:52,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-22 02:24:52,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-10-22 02:24:52,930 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-10-22 02:24:52,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:52,930 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-10-22 02:24:52,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:24:52,930 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-10-22 02:24:52,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 02:24:52,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:52,936 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:52,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-22 02:24:52,937 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:24:52,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:52,937 INFO L82 PathProgramCache]: Analyzing trace with hash -169664854, now seen corresponding path program 1 times [2020-10-22 02:24:52,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:52,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844890164] [2020-10-22 02:24:52,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:53,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 02:24:53,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844890164] [2020-10-22 02:24:53,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:24:53,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:24:53,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1963060506] [2020-10-22 02:24:53,018 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:53,022 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:53,025 INFO L252 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-22 02:24:53,025 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:53,026 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:24:53,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:24:53,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:53,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:24:53,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:24:53,030 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-10-22 02:24:53,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:53,125 INFO L93 Difference]: Finished difference Result 963 states and 2673 transitions. [2020-10-22 02:24:53,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 02:24:53,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-22 02:24:53,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:53,133 INFO L225 Difference]: With dead ends: 963 [2020-10-22 02:24:53,134 INFO L226 Difference]: Without dead ends: 956 [2020-10-22 02:24:53,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:24:53,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2020-10-22 02:24:53,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 611. [2020-10-22 02:24:53,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-22 02:24:53,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-10-22 02:24:53,166 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-10-22 02:24:53,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:53,166 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-10-22 02:24:53,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:24:53,166 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-10-22 02:24:53,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 02:24:53,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:53,169 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:53,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-22 02:24:53,170 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:24:53,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:53,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1253176275, now seen corresponding path program 1 times [2020-10-22 02:24:53,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:53,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201798578] [2020-10-22 02:24:53,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:53,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:53,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201798578] [2020-10-22 02:24:53,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697191037] [2020-10-22 02:24:53,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:24:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:53,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 02:24:53,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:24:53,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:53,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:24:53,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-22 02:24:53,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2073671624] [2020-10-22 02:24:53,518 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:53,520 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:53,524 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-22 02:24:53,524 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:53,721 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [7578#(<= (+ thr2Thread1of3ForFork1_~t~0 2) ~n~0), 7579#(<= (+ ~x~0 2) ~n~0), 7580#(<= (+ thr2Thread1of3ForFork1_~t~0 1) ULTIMATE.start_main_~i~0), 7581#(<= (+ ~x~0 1) ULTIMATE.start_main_~i~0)] [2020-10-22 02:24:53,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-22 02:24:53,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:53,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-22 02:24:53,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2020-10-22 02:24:53,723 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 14 states. [2020-10-22 02:24:54,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:54,641 INFO L93 Difference]: Finished difference Result 1368 states and 3517 transitions. [2020-10-22 02:24:54,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-22 02:24:54,642 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-10-22 02:24:54,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:54,653 INFO L225 Difference]: With dead ends: 1368 [2020-10-22 02:24:54,653 INFO L226 Difference]: Without dead ends: 1355 [2020-10-22 02:24:54,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1765, Unknown=0, NotChecked=0, Total=2162 [2020-10-22 02:24:54,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2020-10-22 02:24:54,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 591. [2020-10-22 02:24:54,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-10-22 02:24:54,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-10-22 02:24:54,692 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-10-22 02:24:54,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:54,692 INFO L481 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-10-22 02:24:54,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-22 02:24:54,692 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-10-22 02:24:54,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 02:24:54,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:54,693 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:54,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-22 02:24:54,908 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:24:54,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:54,908 INFO L82 PathProgramCache]: Analyzing trace with hash 160843847, now seen corresponding path program 2 times [2020-10-22 02:24:54,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:54,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064453440] [2020-10-22 02:24:54,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:54,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:54,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064453440] [2020-10-22 02:24:54,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874594152] [2020-10-22 02:24:54,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:24:55,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 02:24:55,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:24:55,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 02:24:55,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:24:55,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:55,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:24:55,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-22 02:24:55,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [93213334] [2020-10-22 02:24:55,242 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:55,243 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:55,248 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-10-22 02:24:55,248 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:55,248 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:24:55,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 02:24:55,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:55,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 02:24:55,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-10-22 02:24:55,249 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 10 states. [2020-10-22 02:24:55,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:55,702 INFO L93 Difference]: Finished difference Result 1167 states and 3044 transitions. [2020-10-22 02:24:55,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-22 02:24:55,703 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-10-22 02:24:55,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:55,711 INFO L225 Difference]: With dead ends: 1167 [2020-10-22 02:24:55,711 INFO L226 Difference]: Without dead ends: 1159 [2020-10-22 02:24:55,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=238, Invalid=818, Unknown=0, NotChecked=0, Total=1056 [2020-10-22 02:24:55,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2020-10-22 02:24:55,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 536. [2020-10-22 02:24:55,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-22 02:24:55,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-10-22 02:24:55,738 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-10-22 02:24:55,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:55,738 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-10-22 02:24:55,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 02:24:55,738 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-10-22 02:24:55,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 02:24:55,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:55,739 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:55,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-22 02:24:55,953 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:24:55,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:55,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1497752280, now seen corresponding path program 1 times [2020-10-22 02:24:55,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:55,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991767729] [2020-10-22 02:24:55,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:55,999 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-22 02:24:56,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991767729] [2020-10-22 02:24:56,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:24:56,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:24:56,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [345919304] [2020-10-22 02:24:56,000 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:56,002 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:56,004 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-10-22 02:24:56,005 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:56,005 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:24:56,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:24:56,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:56,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:24:56,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:24:56,006 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-10-22 02:24:56,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:56,092 INFO L93 Difference]: Finished difference Result 860 states and 2398 transitions. [2020-10-22 02:24:56,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 02:24:56,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-22 02:24:56,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:56,099 INFO L225 Difference]: With dead ends: 860 [2020-10-22 02:24:56,099 INFO L226 Difference]: Without dead ends: 852 [2020-10-22 02:24:56,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:24:56,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-10-22 02:24:56,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 549. [2020-10-22 02:24:56,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-10-22 02:24:56,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-10-22 02:24:56,120 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-10-22 02:24:56,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:56,121 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-10-22 02:24:56,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:24:56,121 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-10-22 02:24:56,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-22 02:24:56,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:56,122 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:56,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-22 02:24:56,122 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:24:56,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:56,123 INFO L82 PathProgramCache]: Analyzing trace with hash -819922657, now seen corresponding path program 1 times [2020-10-22 02:24:56,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:56,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792797701] [2020-10-22 02:24:56,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 02:24:56,138 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 02:24:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 02:24:56,149 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 02:24:56,157 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-22 02:24:56,157 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-22 02:24:56,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-22 02:24:56,158 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-22 02:24:56,158 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-22 02:24:56,159 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-22 02:24:56,171 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,171 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,171 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,171 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,172 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,172 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,172 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,172 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,172 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,172 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,173 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,173 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,173 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,173 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,173 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,173 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,173 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,173 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,174 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,174 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,174 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,174 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,174 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,174 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,174 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,175 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,175 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,175 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,175 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,175 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,175 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,175 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,176 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,176 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,176 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,176 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,176 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,176 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,177 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,177 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,177 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,177 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,177 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,177 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,179 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,179 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,180 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,180 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,180 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,180 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,195 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,195 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,196 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,196 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,196 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,197 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,198 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,198 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,198 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,198 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,199 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,199 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,199 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,199 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,200 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,201 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,201 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,201 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,201 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,201 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:56,202 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 02:24:56,202 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-22 02:24:56,203 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 02:24:56,203 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 02:24:56,203 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 02:24:56,203 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 02:24:56,203 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 02:24:56,203 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 02:24:56,203 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 02:24:56,203 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 02:24:56,205 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 02:24:56,206 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 139 transitions, 342 flow [2020-10-22 02:24:56,206 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 139 transitions, 342 flow [2020-10-22 02:24:56,206 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 147 places, 139 transitions, 342 flow [2020-10-22 02:24:56,228 INFO L129 PetriNetUnfolder]: 8/146 cut-off events. [2020-10-22 02:24:56,228 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-22 02:24:56,230 INFO L80 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 146 events. 8/146 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 262 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 166. Up to 10 conditions per place. [2020-10-22 02:24:56,235 INFO L116 LiptonReduction]: Number of co-enabled transitions 2652 [2020-10-22 02:24:58,635 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2020-10-22 02:24:58,766 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-22 02:24:58,795 INFO L131 LiptonReduction]: Checked pairs total: 4085 [2020-10-22 02:24:58,796 INFO L133 LiptonReduction]: Total number of compositions: 157 [2020-10-22 02:24:58,796 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-10-22 02:24:58,911 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-10-22 02:24:58,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-10-22 02:24:58,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-22 02:24:58,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:58,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-22 02:24:58,912 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 02:24:58,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:58,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1064410, now seen corresponding path program 1 times [2020-10-22 02:24:58,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:58,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013912645] [2020-10-22 02:24:58,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:58,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:58,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013912645] [2020-10-22 02:24:58,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:24:58,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 02:24:58,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2023222432] [2020-10-22 02:24:58,940 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:58,940 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:58,940 INFO L252 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-10-22 02:24:58,940 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:58,941 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:24:58,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:24:58,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:58,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:24:58,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:24:58,942 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-10-22 02:24:58,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:58,993 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-10-22 02:24:58,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:24:58,993 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-22 02:24:58,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:59,010 INFO L225 Difference]: With dead ends: 1889 [2020-10-22 02:24:59,010 INFO L226 Difference]: Without dead ends: 1767 [2020-10-22 02:24:59,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:24:59,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-10-22 02:24:59,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-10-22 02:24:59,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-10-22 02:24:59,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-10-22 02:24:59,092 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-10-22 02:24:59,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:59,092 INFO L481 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-10-22 02:24:59,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:24:59,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-10-22 02:24:59,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 02:24:59,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:59,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:59,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-22 02:24:59,093 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 02:24:59,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:59,094 INFO L82 PathProgramCache]: Analyzing trace with hash 722307842, now seen corresponding path program 1 times [2020-10-22 02:24:59,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:59,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007580744] [2020-10-22 02:24:59,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:59,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:59,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007580744] [2020-10-22 02:24:59,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:24:59,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:24:59,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1710355917] [2020-10-22 02:24:59,134 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:59,135 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:59,136 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-22 02:24:59,136 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:59,136 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:24:59,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:24:59,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:59,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:24:59,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:24:59,137 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-10-22 02:24:59,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:59,253 INFO L93 Difference]: Finished difference Result 3381 states and 11559 transitions. [2020-10-22 02:24:59,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 02:24:59,253 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-22 02:24:59,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:59,279 INFO L225 Difference]: With dead ends: 3381 [2020-10-22 02:24:59,279 INFO L226 Difference]: Without dead ends: 3375 [2020-10-22 02:24:59,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:24:59,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3375 states. [2020-10-22 02:24:59,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3375 to 1966. [2020-10-22 02:24:59,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-10-22 02:24:59,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-10-22 02:24:59,390 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-10-22 02:24:59,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:59,391 INFO L481 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-10-22 02:24:59,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:24:59,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-10-22 02:24:59,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 02:24:59,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:59,392 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:59,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-22 02:24:59,392 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 02:24:59,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:59,393 INFO L82 PathProgramCache]: Analyzing trace with hash 916321331, now seen corresponding path program 1 times [2020-10-22 02:24:59,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:59,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344576025] [2020-10-22 02:24:59,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:59,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 02:24:59,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344576025] [2020-10-22 02:24:59,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:24:59,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:24:59,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1222846160] [2020-10-22 02:24:59,434 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:59,435 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:59,436 INFO L252 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-22 02:24:59,436 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:59,437 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:24:59,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:24:59,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:59,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:24:59,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:24:59,438 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-10-22 02:24:59,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:59,547 INFO L93 Difference]: Finished difference Result 3684 states and 12737 transitions. [2020-10-22 02:24:59,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 02:24:59,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-22 02:24:59,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:59,575 INFO L225 Difference]: With dead ends: 3684 [2020-10-22 02:24:59,576 INFO L226 Difference]: Without dead ends: 3674 [2020-10-22 02:24:59,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:24:59,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3674 states. [2020-10-22 02:24:59,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3674 to 2200. [2020-10-22 02:24:59,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-10-22 02:24:59,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-10-22 02:24:59,735 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-10-22 02:24:59,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:59,738 INFO L481 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-10-22 02:24:59,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:24:59,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-10-22 02:24:59,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 02:24:59,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:59,739 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:59,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-22 02:24:59,739 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 02:24:59,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:59,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1895531711, now seen corresponding path program 1 times [2020-10-22 02:24:59,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:59,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176027616] [2020-10-22 02:24:59,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:59,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:59,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176027616] [2020-10-22 02:24:59,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196370452] [2020-10-22 02:24:59,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:24:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:59,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 02:24:59,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:25:00,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:00,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:25:00,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-22 02:25:00,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1555341275] [2020-10-22 02:25:00,023 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:25:00,024 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:25:00,027 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-22 02:25:00,027 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:25:00,195 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [25171#(<= (+ thr2Thread1of4ForFork1_~t~0 2) ~n~0), 25172#(<= ~x~0 (+ ULTIMATE.start_main_~i~0 1)), 25173#(and (<= thr2Thread1of4ForFork1_~t~0 ULTIMATE.start_main_~i~0) (= thr2Thread1of4ForFork1_~t~0 0)), 25174#(<= (+ ~x~0 2) ~n~0)] [2020-10-22 02:25:00,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-22 02:25:00,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:25:00,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-22 02:25:00,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2020-10-22 02:25:00,197 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 14 states. [2020-10-22 02:25:01,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:25:01,004 INFO L93 Difference]: Finished difference Result 5261 states and 16798 transitions. [2020-10-22 02:25:01,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-22 02:25:01,005 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-10-22 02:25:01,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:25:01,043 INFO L225 Difference]: With dead ends: 5261 [2020-10-22 02:25:01,043 INFO L226 Difference]: Without dead ends: 5248 [2020-10-22 02:25:01,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=1369, Unknown=0, NotChecked=0, Total=1722 [2020-10-22 02:25:01,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5248 states. [2020-10-22 02:25:01,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5248 to 2157. [2020-10-22 02:25:01,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-10-22 02:25:01,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-10-22 02:25:01,183 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-10-22 02:25:01,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:25:01,183 INFO L481 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-10-22 02:25:01,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-22 02:25:01,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-10-22 02:25:01,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 02:25:01,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:25:01,184 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:25:01,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-22 02:25:01,397 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 02:25:01,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:25:01,398 INFO L82 PathProgramCache]: Analyzing trace with hash 116504769, now seen corresponding path program 2 times [2020-10-22 02:25:01,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:25:01,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234195447] [2020-10-22 02:25:01,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:25:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:01,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:01,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234195447] [2020-10-22 02:25:01,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934352309] [2020-10-22 02:25:01,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:25:01,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 02:25:01,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:25:01,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 02:25:01,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:25:01,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:01,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:25:01,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-22 02:25:01,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [576305753] [2020-10-22 02:25:01,819 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:25:01,820 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:25:01,822 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-10-22 02:25:01,823 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:25:01,823 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:25:01,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 02:25:01,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:25:01,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 02:25:01,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-10-22 02:25:01,824 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 10 states. [2020-10-22 02:25:02,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:25:02,329 INFO L93 Difference]: Finished difference Result 5224 states and 16850 transitions. [2020-10-22 02:25:02,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-22 02:25:02,332 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-10-22 02:25:02,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:25:02,352 INFO L225 Difference]: With dead ends: 5224 [2020-10-22 02:25:02,352 INFO L226 Difference]: Without dead ends: 5213 [2020-10-22 02:25:02,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=238, Invalid=818, Unknown=0, NotChecked=0, Total=1056 [2020-10-22 02:25:02,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5213 states. [2020-10-22 02:25:02,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5213 to 2035. [2020-10-22 02:25:02,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-10-22 02:25:02,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-10-22 02:25:02,461 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-10-22 02:25:02,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:25:02,461 INFO L481 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-10-22 02:25:02,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 02:25:02,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-10-22 02:25:02,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 02:25:02,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:25:02,463 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:25:02,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:25:02,679 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 02:25:02,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:25:02,679 INFO L82 PathProgramCache]: Analyzing trace with hash -111031878, now seen corresponding path program 1 times [2020-10-22 02:25:02,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:25:02,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070280335] [2020-10-22 02:25:02,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:25:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-22 02:25:02,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070280335] [2020-10-22 02:25:02,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:25:02,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:25:02,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1199400971] [2020-10-22 02:25:02,722 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:25:02,723 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:25:02,726 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-10-22 02:25:02,726 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:25:02,726 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:25:02,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:25:02,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:25:02,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:25:02,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:25:02,727 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-10-22 02:25:02,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:25:02,839 INFO L93 Difference]: Finished difference Result 3749 states and 13114 transitions. [2020-10-22 02:25:02,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 02:25:02,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-22 02:25:02,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:25:02,853 INFO L225 Difference]: With dead ends: 3749 [2020-10-22 02:25:02,854 INFO L226 Difference]: Without dead ends: 3734 [2020-10-22 02:25:02,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:25:02,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3734 states. [2020-10-22 02:25:02,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3734 to 2281. [2020-10-22 02:25:02,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-10-22 02:25:02,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-10-22 02:25:02,947 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-10-22 02:25:02,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:25:02,948 INFO L481 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-10-22 02:25:02,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:25:02,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-10-22 02:25:02,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-22 02:25:02,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:25:02,949 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:25:02,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-22 02:25:02,950 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 02:25:02,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:25:02,950 INFO L82 PathProgramCache]: Analyzing trace with hash 502405576, now seen corresponding path program 1 times [2020-10-22 02:25:02,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:25:02,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712718373] [2020-10-22 02:25:02,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:25:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:03,035 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:03,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712718373] [2020-10-22 02:25:03,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560049804] [2020-10-22 02:25:03,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:25:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:03,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 02:25:03,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:25:03,303 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:03,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:25:03,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-22 02:25:03,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2103074996] [2020-10-22 02:25:03,304 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:25:03,306 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:25:03,312 INFO L252 McrAutomatonBuilder]: Finished intersection with 36 states and 51 transitions. [2020-10-22 02:25:03,312 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:25:03,598 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 7 new interpolants: [52568#(<= (+ thr2Thread1of4ForFork1_~t~0 3) ~n~0), 52569#(<= (+ thr2Thread1of4ForFork1_~t~0 2) ULTIMATE.start_main_~i~0), 52570#(<= (+ thr2Thread1of4ForFork1_~t~0 1) ULTIMATE.start_main_~i~0), 52571#(<= (+ ~x~0 3) ~n~0), 52572#(<= ~x~0 (+ ULTIMATE.start_main_~i~0 1)), 52573#(and (<= thr2Thread1of4ForFork1_~t~0 ULTIMATE.start_main_~i~0) (= thr2Thread1of4ForFork1_~t~0 0)), 52574#(<= (+ ~x~0 2) ULTIMATE.start_main_~i~0)] [2020-10-22 02:25:03,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-22 02:25:03,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:25:03,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-22 02:25:03,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2020-10-22 02:25:03,600 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 18 states. [2020-10-22 02:25:05,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:25:05,198 INFO L93 Difference]: Finished difference Result 5661 states and 18326 transitions. [2020-10-22 02:25:05,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-22 02:25:05,199 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 19 [2020-10-22 02:25:05,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:25:05,216 INFO L225 Difference]: With dead ends: 5661 [2020-10-22 02:25:05,216 INFO L226 Difference]: Without dead ends: 5639 [2020-10-22 02:25:05,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=719, Invalid=2941, Unknown=0, NotChecked=0, Total=3660 [2020-10-22 02:25:05,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5639 states. [2020-10-22 02:25:05,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5639 to 2305. [2020-10-22 02:25:05,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-10-22 02:25:05,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-10-22 02:25:05,388 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-10-22 02:25:05,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:25:05,390 INFO L481 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-10-22 02:25:05,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-22 02:25:05,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-10-22 02:25:05,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-22 02:25:05,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:25:05,394 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:25:05,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-22 02:25:05,607 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 02:25:05,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:25:05,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1372443465, now seen corresponding path program 1 times [2020-10-22 02:25:05,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:25:05,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491185460] [2020-10-22 02:25:05,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:25:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:05,717 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:05,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491185460] [2020-10-22 02:25:05,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770251580] [2020-10-22 02:25:05,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:25:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:05,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 02:25:05,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:25:05,966 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:05,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:25:05,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-22 02:25:05,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [884119254] [2020-10-22 02:25:05,968 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:25:05,973 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:25:05,978 INFO L252 McrAutomatonBuilder]: Finished intersection with 28 states and 35 transitions. [2020-10-22 02:25:05,978 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:25:06,121 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [62988#(<= (+ thr2Thread2of4ForFork1_~t~0 3) ~n~0), 62989#(<= (+ thr2Thread2of4ForFork1_~t~0 2) ULTIMATE.start_main_~i~0), 62990#(<= (+ ~x~0 3) ~n~0), 62991#(<= (+ ~x~0 2) ULTIMATE.start_main_~i~0)] [2020-10-22 02:25:06,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-22 02:25:06,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:25:06,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-22 02:25:06,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2020-10-22 02:25:06,123 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 15 states. [2020-10-22 02:25:07,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:25:07,379 INFO L93 Difference]: Finished difference Result 5705 states and 18679 transitions. [2020-10-22 02:25:07,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-22 02:25:07,380 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 19 [2020-10-22 02:25:07,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:25:07,396 INFO L225 Difference]: With dead ends: 5705 [2020-10-22 02:25:07,397 INFO L226 Difference]: Without dead ends: 5676 [2020-10-22 02:25:07,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=543, Invalid=2109, Unknown=0, NotChecked=0, Total=2652 [2020-10-22 02:25:07,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5676 states. [2020-10-22 02:25:07,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5676 to 2299. [2020-10-22 02:25:07,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-10-22 02:25:07,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-10-22 02:25:07,512 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-10-22 02:25:07,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:25:07,513 INFO L481 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-10-22 02:25:07,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-22 02:25:07,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-10-22 02:25:07,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-22 02:25:07,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:25:07,515 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:25:07,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:25:07,728 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 02:25:07,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:25:07,728 INFO L82 PathProgramCache]: Analyzing trace with hash 672543389, now seen corresponding path program 2 times [2020-10-22 02:25:07,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:25:07,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36507970] [2020-10-22 02:25:07,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:25:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:07,854 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:07,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36507970] [2020-10-22 02:25:07,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434758646] [2020-10-22 02:25:07,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:25:07,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 02:25:07,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:25:07,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 02:25:07,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:25:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-22 02:25:08,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:25:08,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 17 [2020-10-22 02:25:08,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1652821237] [2020-10-22 02:25:08,047 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:25:08,049 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:25:08,051 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-10-22 02:25:08,052 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:25:08,052 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:25:08,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-22 02:25:08,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:25:08,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-22 02:25:08,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-10-22 02:25:08,053 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 11 states. [2020-10-22 02:25:08,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:25:08,672 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-10-22 02:25:08,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-22 02:25:08,673 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2020-10-22 02:25:08,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:25:08,683 INFO L225 Difference]: With dead ends: 4934 [2020-10-22 02:25:08,684 INFO L226 Difference]: Without dead ends: 4917 [2020-10-22 02:25:08,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2020-10-22 02:25:08,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-10-22 02:25:08,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-10-22 02:25:08,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-10-22 02:25:08,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-10-22 02:25:08,766 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-10-22 02:25:08,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:25:08,766 INFO L481 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-10-22 02:25:08,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-22 02:25:08,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-10-22 02:25:08,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-22 02:25:08,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:25:08,768 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:25:08,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:25:08,974 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 02:25:08,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:25:08,974 INFO L82 PathProgramCache]: Analyzing trace with hash 672549000, now seen corresponding path program 2 times [2020-10-22 02:25:08,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:25:08,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475724062] [2020-10-22 02:25:08,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:25:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:09,081 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:09,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475724062] [2020-10-22 02:25:09,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691650852] [2020-10-22 02:25:09,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:25:09,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 02:25:09,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:25:09,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 02:25:09,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:25:09,275 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-22 02:25:09,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:25:09,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 17 [2020-10-22 02:25:09,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1465238348] [2020-10-22 02:25:09,276 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:25:09,278 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:25:09,281 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-10-22 02:25:09,281 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:25:09,282 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:25:09,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-22 02:25:09,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:25:09,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-22 02:25:09,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-10-22 02:25:09,283 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 11 states. [2020-10-22 02:25:09,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:25:09,952 INFO L93 Difference]: Finished difference Result 5685 states and 19422 transitions. [2020-10-22 02:25:09,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-22 02:25:09,952 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2020-10-22 02:25:09,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:25:09,963 INFO L225 Difference]: With dead ends: 5685 [2020-10-22 02:25:09,963 INFO L226 Difference]: Without dead ends: 5668 [2020-10-22 02:25:09,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2020-10-22 02:25:09,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5668 states. [2020-10-22 02:25:10,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5668 to 2150. [2020-10-22 02:25:10,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-10-22 02:25:10,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-10-22 02:25:10,030 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-10-22 02:25:10,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:25:10,031 INFO L481 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-10-22 02:25:10,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-22 02:25:10,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-10-22 02:25:10,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-22 02:25:10,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:25:10,033 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:25:10,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-22 02:25:10,248 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 02:25:10,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:25:10,249 INFO L82 PathProgramCache]: Analyzing trace with hash -269569723, now seen corresponding path program 1 times [2020-10-22 02:25:10,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:25:10,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684781098] [2020-10-22 02:25:10,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:25:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:10,342 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-22 02:25:10,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684781098] [2020-10-22 02:25:10,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512955470] [2020-10-22 02:25:10,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:25:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:10,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-22 02:25:10,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:25:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:10,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:25:10,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2020-10-22 02:25:10,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1403754367] [2020-10-22 02:25:10,606 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:25:10,608 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:25:10,616 INFO L252 McrAutomatonBuilder]: Finished intersection with 46 states and 69 transitions. [2020-10-22 02:25:10,616 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:25:11,058 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 10 new interpolants: [92995#(<= (+ thr2Thread2of4ForFork1_~t~0 2) ~n~0), 92997#(<= (+ ~x~0 2) ~n~0), 92996#(<= (+ thr2Thread2of4ForFork1_~t~0 1) ULTIMATE.start_main_~i~0), 92999#(<= (+ thr2Thread1of4ForFork1_~t~0 3) ~n~0), 92998#(<= (+ ~x~0 1) ULTIMATE.start_main_~i~0), 93001#(<= (+ thr2Thread1of4ForFork1_~t~0 1) ULTIMATE.start_main_~i~0), 93000#(<= (+ thr2Thread1of4ForFork1_~t~0 2) ULTIMATE.start_main_~i~0), 93003#(<= (+ ~x~0 2) ULTIMATE.start_main_~i~0), 93002#(<= (+ ~x~0 3) ~n~0), 93004#(and (<= thr2Thread1of4ForFork1_~t~0 ULTIMATE.start_main_~i~0) (= thr2Thread1of4ForFork1_~t~0 0))] [2020-10-22 02:25:11,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-22 02:25:11,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:25:11,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-22 02:25:11,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=937, Unknown=0, NotChecked=0, Total=1056 [2020-10-22 02:25:11,059 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 22 states. [2020-10-22 02:25:17,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:25:17,375 INFO L93 Difference]: Finished difference Result 10390 states and 30626 transitions. [2020-10-22 02:25:17,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2020-10-22 02:25:17,375 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 21 [2020-10-22 02:25:17,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:25:17,393 INFO L225 Difference]: With dead ends: 10390 [2020-10-22 02:25:17,394 INFO L226 Difference]: Without dead ends: 10362 [2020-10-22 02:25:17,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9094 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=3919, Invalid=21203, Unknown=0, NotChecked=0, Total=25122 [2020-10-22 02:25:17,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10362 states. [2020-10-22 02:25:17,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10362 to 2180. [2020-10-22 02:25:17,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2180 states. [2020-10-22 02:25:17,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 8393 transitions. [2020-10-22 02:25:17,534 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 8393 transitions. Word has length 21 [2020-10-22 02:25:17,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:25:17,535 INFO L481 AbstractCegarLoop]: Abstraction has 2180 states and 8393 transitions. [2020-10-22 02:25:17,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-22 02:25:17,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 8393 transitions. [2020-10-22 02:25:17,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-22 02:25:17,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:25:17,537 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:25:17,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:25:17,752 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 02:25:17,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:25:17,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1775417131, now seen corresponding path program 2 times [2020-10-22 02:25:17,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:25:17,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079320441] [2020-10-22 02:25:17,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:25:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:17,890 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:17,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079320441] [2020-10-22 02:25:17,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656074099] [2020-10-22 02:25:17,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:25:17,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 02:25:17,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:25:17,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-22 02:25:17,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:25:18,127 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:18,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:25:18,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2020-10-22 02:25:18,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [633238606] [2020-10-22 02:25:18,129 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:25:18,130 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:25:18,137 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-10-22 02:25:18,137 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:25:18,450 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 7 new interpolants: [108097#(<= (+ ~x~0 2) ULTIMATE.start_main_~i~0), 108096#(<= (+ ~x~0 3) ~n~0), 108091#(<= ~x~0 (+ ULTIMATE.start_main_~i~0 1)), 108093#(<= (+ thr2Thread1of4ForFork1_~t~0 3) ~n~0), 108092#(and (<= thr2Thread1of4ForFork1_~t~0 ULTIMATE.start_main_~i~0) (= thr2Thread1of4ForFork1_~t~0 0)), 108095#(<= (+ thr2Thread1of4ForFork1_~t~0 1) ULTIMATE.start_main_~i~0), 108094#(<= (+ thr2Thread1of4ForFork1_~t~0 2) ULTIMATE.start_main_~i~0)] [2020-10-22 02:25:18,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-22 02:25:18,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:25:18,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-22 02:25:18,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=814, Unknown=0, NotChecked=0, Total=930 [2020-10-22 02:25:18,452 INFO L87 Difference]: Start difference. First operand 2180 states and 8393 transitions. Second operand 20 states. [2020-10-22 02:25:22,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:25:22,515 INFO L93 Difference]: Finished difference Result 7560 states and 22845 transitions. [2020-10-22 02:25:22,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-10-22 02:25:22,516 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 21 [2020-10-22 02:25:22,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:25:22,530 INFO L225 Difference]: With dead ends: 7560 [2020-10-22 02:25:22,530 INFO L226 Difference]: Without dead ends: 7539 [2020-10-22 02:25:22,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3588 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1919, Invalid=9423, Unknown=0, NotChecked=0, Total=11342 [2020-10-22 02:25:22,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7539 states. [2020-10-22 02:25:22,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7539 to 2148. [2020-10-22 02:25:22,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2148 states. [2020-10-22 02:25:22,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2148 states to 2148 states and 8262 transitions. [2020-10-22 02:25:22,640 INFO L78 Accepts]: Start accepts. Automaton has 2148 states and 8262 transitions. Word has length 21 [2020-10-22 02:25:22,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:25:22,641 INFO L481 AbstractCegarLoop]: Abstraction has 2148 states and 8262 transitions. [2020-10-22 02:25:22,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-22 02:25:22,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2148 states and 8262 transitions. [2020-10-22 02:25:22,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-22 02:25:22,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:25:22,644 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:25:22,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-22 02:25:22,857 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 02:25:22,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:25:22,858 INFO L82 PathProgramCache]: Analyzing trace with hash -258131359, now seen corresponding path program 3 times [2020-10-22 02:25:22,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:25:22,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347962531] [2020-10-22 02:25:22,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:25:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:22,954 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:22,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347962531] [2020-10-22 02:25:22,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701947539] [2020-10-22 02:25:22,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:25:23,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-22 02:25:23,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:25:23,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-22 02:25:23,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:25:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:23,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:25:23,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2020-10-22 02:25:23,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1590854358] [2020-10-22 02:25:23,253 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:25:23,256 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:25:23,263 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-10-22 02:25:23,263 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:25:23,536 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 8 new interpolants: [120193#(or (<= (+ ~x~0 1) ~n~0) (<= ~n~0 ULTIMATE.start_main_~i~0)), 120192#(<= (+ ~x~0 3) ~n~0), 120195#(<= thr2Thread1of4ForFork1_~t~0 ULTIMATE.start_main_~i~0), 120194#(or (<= (+ ~x~0 1) ~n~0) (<= ~n~0 (+ ULTIMATE.start_main_~i~0 1))), 120197#(<= (+ ~x~0 2) ULTIMATE.start_main_~i~0), 120196#(<= (+ thr2Thread2of4ForFork1_~t~0 2) ULTIMATE.start_main_~i~0), 120191#(<= (+ thr2Thread2of4ForFork1_~t~0 3) ~n~0), 120190#(<= (+ ~x~0 2) ~n~0)] [2020-10-22 02:25:23,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-22 02:25:23,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:25:23,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-22 02:25:23,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=862, Unknown=0, NotChecked=0, Total=992 [2020-10-22 02:25:23,538 INFO L87 Difference]: Start difference. First operand 2148 states and 8262 transitions. Second operand 21 states. [2020-10-22 02:25:30,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:25:30,352 INFO L93 Difference]: Finished difference Result 9786 states and 29087 transitions. [2020-10-22 02:25:30,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2020-10-22 02:25:30,353 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2020-10-22 02:25:30,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:25:30,378 INFO L225 Difference]: With dead ends: 9786 [2020-10-22 02:25:30,378 INFO L226 Difference]: Without dead ends: 9770 [2020-10-22 02:25:30,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9484 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=3998, Invalid=21762, Unknown=0, NotChecked=0, Total=25760 [2020-10-22 02:25:30,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9770 states. [2020-10-22 02:25:30,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9770 to 2008. [2020-10-22 02:25:30,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-10-22 02:25:30,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-10-22 02:25:30,534 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-10-22 02:25:30,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:25:30,535 INFO L481 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-10-22 02:25:30,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-22 02:25:30,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-10-22 02:25:30,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-22 02:25:30,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:25:30,544 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:25:30,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-22 02:25:30,759 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 02:25:30,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:25:30,759 INFO L82 PathProgramCache]: Analyzing trace with hash -363208635, now seen corresponding path program 4 times [2020-10-22 02:25:30,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:25:30,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318886275] [2020-10-22 02:25:30,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:25:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:30,870 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:30,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318886275] [2020-10-22 02:25:30,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676006520] [2020-10-22 02:25:30,871 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:25:30,954 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 02:25:30,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:25:30,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-22 02:25:30,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:25:31,149 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:31,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:25:31,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2020-10-22 02:25:31,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [461472035] [2020-10-22 02:25:31,150 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:25:31,153 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:25:31,158 INFO L252 McrAutomatonBuilder]: Finished intersection with 30 states and 37 transitions. [2020-10-22 02:25:31,158 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:25:31,314 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [134342#(<= (+ thr2Thread2of4ForFork1_~t~0 3) ~n~0), 134343#(<= (+ ~x~0 3) ~n~0), 134344#(<= (+ thr2Thread2of4ForFork1_~t~0 2) ULTIMATE.start_main_~i~0), 134345#(<= (+ ~x~0 2) ULTIMATE.start_main_~i~0)] [2020-10-22 02:25:31,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-22 02:25:31,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:25:31,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-22 02:25:31,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2020-10-22 02:25:31,315 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 17 states. [2020-10-22 02:25:34,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:25:34,989 INFO L93 Difference]: Finished difference Result 7307 states and 22070 transitions. [2020-10-22 02:25:34,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-10-22 02:25:34,989 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 21 [2020-10-22 02:25:34,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:25:35,003 INFO L225 Difference]: With dead ends: 7307 [2020-10-22 02:25:35,003 INFO L226 Difference]: Without dead ends: 7286 [2020-10-22 02:25:35,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2823 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1539, Invalid=7391, Unknown=0, NotChecked=0, Total=8930 [2020-10-22 02:25:35,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7286 states. [2020-10-22 02:25:35,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7286 to 1976. [2020-10-22 02:25:35,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-10-22 02:25:35,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-10-22 02:25:35,088 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-10-22 02:25:35,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:25:35,088 INFO L481 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-10-22 02:25:35,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-22 02:25:35,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-10-22 02:25:35,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-22 02:25:35,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:25:35,091 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:25:35,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-22 02:25:35,297 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 02:25:35,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:25:35,297 INFO L82 PathProgramCache]: Analyzing trace with hash 123808083, now seen corresponding path program 1 times [2020-10-22 02:25:35,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:25:35,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481317307] [2020-10-22 02:25:35,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:25:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:35,341 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-22 02:25:35,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481317307] [2020-10-22 02:25:35,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:25:35,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:25:35,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2100896086] [2020-10-22 02:25:35,342 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:25:35,344 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:25:35,347 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-22 02:25:35,347 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:25:35,348 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:25:35,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:25:35,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:25:35,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:25:35,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:25:35,349 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 5 states. [2020-10-22 02:25:35,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:25:35,479 INFO L93 Difference]: Finished difference Result 3496 states and 12265 transitions. [2020-10-22 02:25:35,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 02:25:35,480 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-22 02:25:35,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:25:35,487 INFO L225 Difference]: With dead ends: 3496 [2020-10-22 02:25:35,487 INFO L226 Difference]: Without dead ends: 3480 [2020-10-22 02:25:35,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:25:35,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2020-10-22 02:25:35,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 2183. [2020-10-22 02:25:35,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2183 states. [2020-10-22 02:25:35,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 8210 transitions. [2020-10-22 02:25:35,536 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 8210 transitions. Word has length 21 [2020-10-22 02:25:35,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:25:35,537 INFO L481 AbstractCegarLoop]: Abstraction has 2183 states and 8210 transitions. [2020-10-22 02:25:35,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:25:35,537 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 8210 transitions. [2020-10-22 02:25:35,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-22 02:25:35,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:25:35,538 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:25:35,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-22 02:25:35,538 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 02:25:35,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:25:35,539 INFO L82 PathProgramCache]: Analyzing trace with hash 2069103787, now seen corresponding path program 5 times [2020-10-22 02:25:35,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:25:35,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610976332] [2020-10-22 02:25:35,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:25:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:35,672 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:35,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610976332] [2020-10-22 02:25:35,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968504054] [2020-10-22 02:25:35,673 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:25:35,783 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-22 02:25:35,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:25:35,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-22 02:25:35,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:25:36,067 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:36,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:25:36,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2020-10-22 02:25:36,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [113427235] [2020-10-22 02:25:36,068 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:25:36,070 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:25:36,075 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-22 02:25:36,075 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:25:36,075 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:25:36,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-22 02:25:36,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:25:36,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-22 02:25:36,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2020-10-22 02:25:36,077 INFO L87 Difference]: Start difference. First operand 2183 states and 8210 transitions. Second operand 13 states. [2020-10-22 02:25:37,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:25:37,740 INFO L93 Difference]: Finished difference Result 6822 states and 21016 transitions. [2020-10-22 02:25:37,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-22 02:25:37,741 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 21 [2020-10-22 02:25:37,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:25:37,753 INFO L225 Difference]: With dead ends: 6822 [2020-10-22 02:25:37,753 INFO L226 Difference]: Without dead ends: 6811 [2020-10-22 02:25:37,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1096 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=764, Invalid=3268, Unknown=0, NotChecked=0, Total=4032 [2020-10-22 02:25:37,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6811 states. [2020-10-22 02:25:37,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6811 to 2096. [2020-10-22 02:25:37,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2096 states. [2020-10-22 02:25:37,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 7876 transitions. [2020-10-22 02:25:37,844 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 7876 transitions. Word has length 21 [2020-10-22 02:25:37,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:25:37,844 INFO L481 AbstractCegarLoop]: Abstraction has 2096 states and 7876 transitions. [2020-10-22 02:25:37,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-22 02:25:37,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 7876 transitions. [2020-10-22 02:25:37,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-22 02:25:37,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:25:37,846 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:25:38,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:25:38,046 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 02:25:38,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:25:38,047 INFO L82 PathProgramCache]: Analyzing trace with hash 2074490347, now seen corresponding path program 6 times [2020-10-22 02:25:38,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:25:38,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365035067] [2020-10-22 02:25:38,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:25:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:38,152 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:38,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365035067] [2020-10-22 02:25:38,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436875026] [2020-10-22 02:25:38,153 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:25:38,247 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-22 02:25:38,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:25:38,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-22 02:25:38,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:25:38,448 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:38,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:25:38,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2020-10-22 02:25:38,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2131296793] [2020-10-22 02:25:38,449 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:25:38,451 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:25:38,454 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-22 02:25:38,454 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:25:38,455 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:25:38,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-22 02:25:38,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:25:38,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-22 02:25:38,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2020-10-22 02:25:38,455 INFO L87 Difference]: Start difference. First operand 2096 states and 7876 transitions. Second operand 13 states. [2020-10-22 02:25:40,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:25:40,068 INFO L93 Difference]: Finished difference Result 8632 states and 27326 transitions. [2020-10-22 02:25:40,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-22 02:25:40,069 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 21 [2020-10-22 02:25:40,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:25:40,085 INFO L225 Difference]: With dead ends: 8632 [2020-10-22 02:25:40,085 INFO L226 Difference]: Without dead ends: 8617 [2020-10-22 02:25:40,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=731, Invalid=3051, Unknown=0, NotChecked=0, Total=3782 [2020-10-22 02:25:40,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8617 states. [2020-10-22 02:25:40,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8617 to 1965. [2020-10-22 02:25:40,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-10-22 02:25:40,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-10-22 02:25:40,184 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-10-22 02:25:40,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:25:40,185 INFO L481 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-10-22 02:25:40,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-22 02:25:40,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-10-22 02:25:40,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-22 02:25:40,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:25:40,186 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:25:40,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:25:40,390 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-22 02:25:40,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:25:40,390 INFO L82 PathProgramCache]: Analyzing trace with hash -463541898, now seen corresponding path program 1 times [2020-10-22 02:25:40,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:25:40,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868820839] [2020-10-22 02:25:40,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:25:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 02:25:40,410 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 02:25:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-22 02:25:40,421 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-22 02:25:40,439 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-22 02:25:40,439 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-22 02:25:40,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-22 02:25:40,440 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-22 02:25:40,441 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-22 02:25:40,441 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-22 02:25:40,456 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,457 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,457 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,457 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,457 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,457 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,457 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,457 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,458 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,458 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,458 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,458 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,458 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,458 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,458 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,459 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,459 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,459 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,459 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,460 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,460 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,460 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,460 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,460 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,460 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,460 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,460 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,461 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,461 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,461 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,461 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,461 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,461 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,461 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,461 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,462 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,462 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,462 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,463 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,463 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,463 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,463 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,463 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,463 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,463 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,465 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,465 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,465 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,465 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,466 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,466 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,466 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,466 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,466 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,466 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,466 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,467 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,467 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,467 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,467 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,467 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,472 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,472 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,472 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,472 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,473 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,473 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,473 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,473 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,473 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,474 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,474 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,474 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,474 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,474 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,474 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,474 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,475 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,475 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,475 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,475 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,475 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,475 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,475 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,475 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,475 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,476 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,476 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,476 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,476 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,476 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,476 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,476 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,476 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,477 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,477 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,477 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,477 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,477 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,477 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,477 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,477 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,477 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,478 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,478 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,478 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,478 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,478 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,478 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,478 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,479 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,479 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,479 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,479 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,479 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,479 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,479 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,479 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,479 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,480 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,480 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,480 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,480 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,480 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,480 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,480 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,481 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,481 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,481 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,481 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,481 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,481 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,481 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,491 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,491 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,491 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,492 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,492 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,492 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,492 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,492 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,497 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,497 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,497 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,497 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,497 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,497 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,499 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,499 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,499 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,499 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,499 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,500 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,500 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,501 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,501 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,501 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,502 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,502 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,502 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,503 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,503 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,505 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,505 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,505 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,505 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,505 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,507 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,507 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,508 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,508 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,508 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:25:40,510 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 02:25:40,510 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-22 02:25:40,510 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 02:25:40,511 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 02:25:40,511 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 02:25:40,511 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 02:25:40,511 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 02:25:40,511 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 02:25:40,511 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 02:25:40,512 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 02:25:40,516 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 02:25:40,516 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 162 transitions, 414 flow [2020-10-22 02:25:40,516 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 172 places, 162 transitions, 414 flow [2020-10-22 02:25:40,517 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 172 places, 162 transitions, 414 flow [2020-10-22 02:25:40,555 INFO L129 PetriNetUnfolder]: 9/168 cut-off events. [2020-10-22 02:25:40,556 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-22 02:25:40,560 INFO L80 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 168 events. 9/168 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 308 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 195. Up to 12 conditions per place. [2020-10-22 02:25:40,569 INFO L116 LiptonReduction]: Number of co-enabled transitions 3390 [2020-10-22 02:25:43,084 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-22 02:25:43,609 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2020-10-22 02:25:43,755 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-22 02:25:44,011 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-22 02:25:44,142 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-22 02:25:44,148 INFO L131 LiptonReduction]: Checked pairs total: 4734 [2020-10-22 02:25:44,148 INFO L133 LiptonReduction]: Total number of compositions: 175 [2020-10-22 02:25:44,148 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-10-22 02:25:44,436 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-10-22 02:25:44,436 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-10-22 02:25:44,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-22 02:25:44,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:25:44,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-22 02:25:44,436 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:25:44,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:25:44,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1424171, now seen corresponding path program 1 times [2020-10-22 02:25:44,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:25:44,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420880418] [2020-10-22 02:25:44,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:25:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:44,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:44,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420880418] [2020-10-22 02:25:44,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:25:44,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 02:25:44,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1045961620] [2020-10-22 02:25:44,459 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:25:44,459 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:25:44,459 INFO L252 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-10-22 02:25:44,460 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:25:44,460 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:25:44,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:25:44,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:25:44,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:25:44,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:25:44,461 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-10-22 02:25:44,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:25:44,541 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-10-22 02:25:44,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:25:44,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-22 02:25:44,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:25:44,557 INFO L225 Difference]: With dead ends: 5844 [2020-10-22 02:25:44,557 INFO L226 Difference]: Without dead ends: 5479 [2020-10-22 02:25:44,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:25:44,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-10-22 02:25:44,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-10-22 02:25:44,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-10-22 02:25:44,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-10-22 02:25:44,736 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-10-22 02:25:44,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:25:44,736 INFO L481 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-10-22 02:25:44,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:25:44,736 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-10-22 02:25:44,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 02:25:44,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:25:44,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:25:44,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-22 02:25:44,737 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:25:44,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:25:44,737 INFO L82 PathProgramCache]: Analyzing trace with hash 2117777747, now seen corresponding path program 1 times [2020-10-22 02:25:44,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:25:44,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520631481] [2020-10-22 02:25:44,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:25:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:44,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:44,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520631481] [2020-10-22 02:25:44,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:25:44,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:25:44,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [53431771] [2020-10-22 02:25:44,776 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:25:44,777 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:25:44,778 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-22 02:25:44,778 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:25:44,778 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:25:44,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:25:44,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:25:44,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:25:44,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:25:44,779 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-10-22 02:25:44,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:25:44,949 INFO L93 Difference]: Finished difference Result 11373 states and 46632 transitions. [2020-10-22 02:25:44,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 02:25:44,950 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-22 02:25:44,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:25:44,979 INFO L225 Difference]: With dead ends: 11373 [2020-10-22 02:25:44,979 INFO L226 Difference]: Without dead ends: 11366 [2020-10-22 02:25:44,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:25:45,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11366 states. [2020-10-22 02:25:45,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11366 to 6331. [2020-10-22 02:25:45,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-10-22 02:25:45,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-10-22 02:25:45,213 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-10-22 02:25:45,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:25:45,213 INFO L481 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-10-22 02:25:45,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:25:45,213 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-10-22 02:25:45,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 02:25:45,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:25:45,214 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:25:45,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-22 02:25:45,214 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:25:45,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:25:45,215 INFO L82 PathProgramCache]: Analyzing trace with hash 2072429311, now seen corresponding path program 1 times [2020-10-22 02:25:45,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:25:45,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021392566] [2020-10-22 02:25:45,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:25:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:45,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 02:25:45,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021392566] [2020-10-22 02:25:45,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:25:45,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:25:45,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1354648786] [2020-10-22 02:25:45,256 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:25:45,258 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:25:45,260 INFO L252 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-22 02:25:45,260 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:25:45,260 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:25:45,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:25:45,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:25:45,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:25:45,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:25:45,262 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-10-22 02:25:45,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:25:45,644 INFO L93 Difference]: Finished difference Result 12785 states and 53129 transitions. [2020-10-22 02:25:45,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 02:25:45,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-22 02:25:45,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:25:45,696 INFO L225 Difference]: With dead ends: 12785 [2020-10-22 02:25:45,696 INFO L226 Difference]: Without dead ends: 12772 [2020-10-22 02:25:45,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:25:45,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12772 states. [2020-10-22 02:25:46,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12772 to 7391. [2020-10-22 02:25:46,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-10-22 02:25:46,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-10-22 02:25:46,049 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-10-22 02:25:46,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:25:46,050 INFO L481 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-10-22 02:25:46,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:25:46,050 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-10-22 02:25:46,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 02:25:46,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:25:46,050 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:25:46,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-22 02:25:46,051 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:25:46,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:25:46,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1017397189, now seen corresponding path program 1 times [2020-10-22 02:25:46,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:25:46,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223006375] [2020-10-22 02:25:46,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:25:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:46,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:46,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223006375] [2020-10-22 02:25:46,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576898523] [2020-10-22 02:25:46,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:25:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:46,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 02:25:46,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:25:46,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:46,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:25:46,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-22 02:25:46,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1153577065] [2020-10-22 02:25:46,350 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:25:46,351 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:25:46,353 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-22 02:25:46,353 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:25:46,545 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [81043#(<= (+ thr2Thread1of5ForFork1_~t~0 1) ULTIMATE.start_main_~i~0), 81042#(<= (+ thr2Thread1of5ForFork1_~t~0 2) ~n~0), 81045#(<= (+ ~x~0 2) ~n~0), 81044#(and (= ULTIMATE.start_main_~i~0 0) (<= thr2Thread1of5ForFork1_~t~0 0)), 81047#(and (= ULTIMATE.start_main_~i~0 0) (<= ~x~0 0)), 81046#(<= (+ ~x~0 1) ULTIMATE.start_main_~i~0)] [2020-10-22 02:25:46,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-22 02:25:46,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:25:46,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-22 02:25:46,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2020-10-22 02:25:46,546 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 16 states. [2020-10-22 02:25:47,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:25:47,866 INFO L93 Difference]: Finished difference Result 22290 states and 85387 transitions. [2020-10-22 02:25:47,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-22 02:25:47,867 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 15 [2020-10-22 02:25:47,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:25:47,919 INFO L225 Difference]: With dead ends: 22290 [2020-10-22 02:25:47,919 INFO L226 Difference]: Without dead ends: 22265 [2020-10-22 02:25:47,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=413, Invalid=1939, Unknown=0, NotChecked=0, Total=2352 [2020-10-22 02:25:48,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22265 states. [2020-10-22 02:25:49,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22265 to 7303. [2020-10-22 02:25:49,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-10-22 02:25:49,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-10-22 02:25:49,179 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-10-22 02:25:49,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:25:49,179 INFO L481 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-10-22 02:25:49,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-22 02:25:49,179 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-10-22 02:25:49,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 02:25:49,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:25:49,179 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:25:49,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-22 02:25:49,380 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:25:49,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:25:49,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1260267579, now seen corresponding path program 2 times [2020-10-22 02:25:49,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:25:49,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336027050] [2020-10-22 02:25:49,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:25:49,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:49,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:49,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336027050] [2020-10-22 02:25:49,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41086933] [2020-10-22 02:25:49,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:25:49,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 02:25:49,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:25:49,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 02:25:49,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:25:49,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:49,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:25:49,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-22 02:25:49,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [374410950] [2020-10-22 02:25:49,682 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:25:49,684 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:25:49,686 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-10-22 02:25:49,687 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:25:49,687 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:25:49,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 02:25:49,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:25:49,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 02:25:49,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-10-22 02:25:49,689 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 10 states. [2020-10-22 02:25:50,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:25:50,380 INFO L93 Difference]: Finished difference Result 19533 states and 76146 transitions. [2020-10-22 02:25:50,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-22 02:25:50,380 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-10-22 02:25:50,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:25:50,427 INFO L225 Difference]: With dead ends: 19533 [2020-10-22 02:25:50,428 INFO L226 Difference]: Without dead ends: 19519 [2020-10-22 02:25:50,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=238, Invalid=818, Unknown=0, NotChecked=0, Total=1056 [2020-10-22 02:25:50,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19519 states. [2020-10-22 02:25:50,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19519 to 7048. [2020-10-22 02:25:50,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-10-22 02:25:50,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-10-22 02:25:50,744 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-10-22 02:25:50,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:25:50,744 INFO L481 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-10-22 02:25:50,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 02:25:50,744 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-10-22 02:25:50,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 02:25:50,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:25:50,745 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:25:50,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:25:50,946 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:25:50,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:25:50,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1517776040, now seen corresponding path program 1 times [2020-10-22 02:25:50,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:25:50,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668983115] [2020-10-22 02:25:50,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:25:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:50,983 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-22 02:25:50,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668983115] [2020-10-22 02:25:50,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:25:50,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:25:50,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [708319150] [2020-10-22 02:25:50,984 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:25:50,986 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:25:50,988 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-10-22 02:25:50,988 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:25:50,988 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:25:50,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:25:50,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:25:50,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:25:50,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:25:50,989 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-10-22 02:25:51,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:25:51,354 INFO L93 Difference]: Finished difference Result 13942 states and 58799 transitions. [2020-10-22 02:25:51,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 02:25:51,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-22 02:25:51,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:25:51,392 INFO L225 Difference]: With dead ends: 13942 [2020-10-22 02:25:51,392 INFO L226 Difference]: Without dead ends: 13920 [2020-10-22 02:25:51,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:25:51,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13920 states. [2020-10-22 02:25:51,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13920 to 8342. [2020-10-22 02:25:51,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-10-22 02:25:51,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-10-22 02:25:51,667 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-10-22 02:25:51,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:25:51,668 INFO L481 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-10-22 02:25:51,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:25:51,668 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-10-22 02:25:51,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-22 02:25:51,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:25:51,669 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:25:51,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-22 02:25:51,669 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:25:51,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:25:51,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1852718366, now seen corresponding path program 1 times [2020-10-22 02:25:51,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:25:51,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881985956] [2020-10-22 02:25:51,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:25:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:51,763 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:51,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881985956] [2020-10-22 02:25:51,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375783533] [2020-10-22 02:25:51,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:25:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:51,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 02:25:51,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:25:52,003 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:52,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:25:52,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-22 02:25:52,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1193297128] [2020-10-22 02:25:52,004 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:25:52,005 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:25:52,009 INFO L252 McrAutomatonBuilder]: Finished intersection with 36 states and 51 transitions. [2020-10-22 02:25:52,009 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:25:52,344 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 7 new interpolants: [182422#(<= (+ thr2Thread1of5ForFork1_~t~0 3) ~n~0), 182423#(<= (+ thr2Thread1of5ForFork1_~t~0 2) ULTIMATE.start_main_~i~0), 182426#(<= (+ thr2Thread1of5ForFork1_~t~0 1) ULTIMATE.start_main_~i~0), 182427#(and (= ULTIMATE.start_main_~i~0 0) (<= thr2Thread1of5ForFork1_~t~0 0)), 182424#(<= (+ ~x~0 3) ~n~0), 182425#(<= (+ ~x~0 2) ULTIMATE.start_main_~i~0), 182428#(and (= ULTIMATE.start_main_~i~0 0) (<= ~x~0 0))] [2020-10-22 02:25:52,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-22 02:25:52,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:25:52,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-22 02:25:52,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2020-10-22 02:25:52,346 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 18 states. [2020-10-22 02:25:54,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:25:54,114 INFO L93 Difference]: Finished difference Result 22461 states and 87886 transitions. [2020-10-22 02:25:54,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-22 02:25:54,115 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 19 [2020-10-22 02:25:54,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:25:54,170 INFO L225 Difference]: With dead ends: 22461 [2020-10-22 02:25:54,170 INFO L226 Difference]: Without dead ends: 22428 [2020-10-22 02:25:54,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=592, Invalid=2948, Unknown=0, NotChecked=0, Total=3540 [2020-10-22 02:25:54,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22428 states. [2020-10-22 02:25:54,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22428 to 8452. [2020-10-22 02:25:54,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-10-22 02:25:54,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-10-22 02:25:54,700 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-10-22 02:25:54,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:25:54,700 INFO L481 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-10-22 02:25:54,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-22 02:25:54,700 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-10-22 02:25:54,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-22 02:25:54,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:25:54,701 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:25:54,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-22 02:25:54,902 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:25:54,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:25:54,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1279905423, now seen corresponding path program 1 times [2020-10-22 02:25:54,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:25:54,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441658699] [2020-10-22 02:25:54,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:25:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:54,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:54,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441658699] [2020-10-22 02:25:54,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137914258] [2020-10-22 02:25:54,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:25:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:55,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-22 02:25:55,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:25:55,229 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:55,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:25:55,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-22 02:25:55,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [218778275] [2020-10-22 02:25:55,231 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:25:55,233 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:25:55,237 INFO L252 McrAutomatonBuilder]: Finished intersection with 28 states and 35 transitions. [2020-10-22 02:25:55,237 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:25:55,403 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [221935#(<= (+ thr2Thread2of5ForFork1_~t~0 2) ULTIMATE.start_main_~i~0), 221934#(<= (+ thr2Thread2of5ForFork1_~t~0 3) ~n~0), 221938#(<= (+ ~x~0 2) ULTIMATE.start_main_~i~0), 221937#(<= (+ ~x~0 3) ~n~0), 221936#(<= (+ thr2Thread2of5ForFork1_~t~0 1) ULTIMATE.start_main_~i~0)] [2020-10-22 02:25:55,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-22 02:25:55,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:25:55,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-22 02:25:55,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2020-10-22 02:25:55,404 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 16 states. [2020-10-22 02:25:57,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:25:57,161 INFO L93 Difference]: Finished difference Result 23160 states and 91054 transitions. [2020-10-22 02:25:57,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-22 02:25:57,162 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19 [2020-10-22 02:25:57,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:25:57,217 INFO L225 Difference]: With dead ends: 23160 [2020-10-22 02:25:57,217 INFO L226 Difference]: Without dead ends: 23117 [2020-10-22 02:25:57,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=605, Invalid=2475, Unknown=0, NotChecked=0, Total=3080 [2020-10-22 02:25:57,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23117 states. [2020-10-22 02:25:57,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23117 to 8480. [2020-10-22 02:25:57,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-10-22 02:25:57,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-10-22 02:25:57,774 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-10-22 02:25:57,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:25:57,774 INFO L481 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-10-22 02:25:57,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-22 02:25:57,774 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-10-22 02:25:57,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-22 02:25:57,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:25:57,776 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:25:57,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-22 02:25:57,990 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:25:57,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:25:57,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1706062769, now seen corresponding path program 2 times [2020-10-22 02:25:57,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:25:57,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832165859] [2020-10-22 02:25:57,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:25:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:58,080 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:58,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832165859] [2020-10-22 02:25:58,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967032659] [2020-10-22 02:25:58,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:25:58,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 02:25:58,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:25:58,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 02:25:58,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:25:58,303 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-22 02:25:58,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:25:58,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 17 [2020-10-22 02:25:58,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1290751176] [2020-10-22 02:25:58,304 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:25:58,306 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:25:58,309 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-10-22 02:25:58,309 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:25:58,309 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:25:58,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-22 02:25:58,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:25:58,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-22 02:25:58,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-10-22 02:25:58,310 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 11 states. [2020-10-22 02:25:59,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:25:59,085 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-10-22 02:25:59,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-22 02:25:59,086 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2020-10-22 02:25:59,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:25:59,135 INFO L225 Difference]: With dead ends: 19852 [2020-10-22 02:25:59,135 INFO L226 Difference]: Without dead ends: 19827 [2020-10-22 02:25:59,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2020-10-22 02:25:59,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-10-22 02:25:59,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-10-22 02:25:59,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-10-22 02:25:59,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-10-22 02:25:59,478 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-10-22 02:25:59,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:25:59,478 INFO L481 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-10-22 02:25:59,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-22 02:25:59,478 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-10-22 02:25:59,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-22 02:25:59,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:25:59,479 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:25:59,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:25:59,685 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:25:59,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:25:59,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1706096094, now seen corresponding path program 2 times [2020-10-22 02:25:59,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:25:59,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199282974] [2020-10-22 02:25:59,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:25:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:25:59,778 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:25:59,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199282974] [2020-10-22 02:25:59,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099793552] [2020-10-22 02:25:59,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:25:59,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 02:25:59,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:25:59,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 02:25:59,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:25:59,995 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-22 02:25:59,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:25:59,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 17 [2020-10-22 02:25:59,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [22618332] [2020-10-22 02:25:59,996 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:25:59,997 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:26:00,000 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-10-22 02:26:00,000 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:26:00,001 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:26:00,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-22 02:26:00,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:26:00,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-22 02:26:00,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-10-22 02:26:00,002 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 11 states. [2020-10-22 02:26:00,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:26:00,941 INFO L93 Difference]: Finished difference Result 22539 states and 92825 transitions. [2020-10-22 02:26:00,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-22 02:26:00,942 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2020-10-22 02:26:00,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:26:00,998 INFO L225 Difference]: With dead ends: 22539 [2020-10-22 02:26:00,998 INFO L226 Difference]: Without dead ends: 22514 [2020-10-22 02:26:00,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2020-10-22 02:26:01,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22514 states. [2020-10-22 02:26:01,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22514 to 8317. [2020-10-22 02:26:01,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-10-22 02:26:01,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-10-22 02:26:01,363 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-10-22 02:26:01,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:26:01,364 INFO L481 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-10-22 02:26:01,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-22 02:26:01,364 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-10-22 02:26:01,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-22 02:26:01,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:26:01,365 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:26:01,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-10-22 02:26:01,566 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:26:01,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:26:01,566 INFO L82 PathProgramCache]: Analyzing trace with hash -640122441, now seen corresponding path program 1 times [2020-10-22 02:26:01,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:26:01,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008744222] [2020-10-22 02:26:01,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:26:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:26:01,679 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-22 02:26:01,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008744222] [2020-10-22 02:26:01,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242199951] [2020-10-22 02:26:01,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:26:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:26:01,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-22 02:26:01,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:26:01,981 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:26:01,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:26:01,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2020-10-22 02:26:01,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1864463924] [2020-10-22 02:26:01,982 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:26:01,984 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:26:01,991 INFO L252 McrAutomatonBuilder]: Finished intersection with 46 states and 69 transitions. [2020-10-22 02:26:01,991 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:26:02,535 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 11 new interpolants: [338197#(<= (+ thr2Thread2of5ForFork1_~t~0 2) ~n~0), 338199#(<= (+ thr2Thread2of5ForFork1_~t~0 1) ULTIMATE.start_main_~i~0), 338198#(<= (+ ~x~0 2) ~n~0), 338205#(<= (+ ~x~0 2) ULTIMATE.start_main_~i~0), 338204#(<= (+ ~x~0 3) ~n~0), 338207#(and (= ULTIMATE.start_main_~i~0 0) (<= ~x~0 0)), 338206#(and (= ULTIMATE.start_main_~i~0 0) (<= thr2Thread1of5ForFork1_~t~0 0)), 338201#(<= (+ thr2Thread1of5ForFork1_~t~0 3) ~n~0), 338200#(<= (+ ~x~0 1) ULTIMATE.start_main_~i~0), 338203#(<= (+ thr2Thread1of5ForFork1_~t~0 1) ULTIMATE.start_main_~i~0), 338202#(<= (+ thr2Thread1of5ForFork1_~t~0 2) ULTIMATE.start_main_~i~0)] [2020-10-22 02:26:02,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-22 02:26:02,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:26:02,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-22 02:26:02,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1004, Unknown=0, NotChecked=0, Total=1122 [2020-10-22 02:26:02,536 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 23 states. [2020-10-22 02:26:04,784 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-10-22 02:26:08,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:26:08,958 INFO L93 Difference]: Finished difference Result 43908 states and 158627 transitions. [2020-10-22 02:26:08,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2020-10-22 02:26:08,959 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 21 [2020-10-22 02:26:08,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:26:09,069 INFO L225 Difference]: With dead ends: 43908 [2020-10-22 02:26:09,069 INFO L226 Difference]: Without dead ends: 43868 [2020-10-22 02:26:09,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7910 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3380, Invalid=18970, Unknown=0, NotChecked=0, Total=22350 [2020-10-22 02:26:09,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43868 states. [2020-10-22 02:26:09,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43868 to 8404. [2020-10-22 02:26:09,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8404 states. [2020-10-22 02:26:09,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8404 states to 8404 states and 38687 transitions. [2020-10-22 02:26:09,876 INFO L78 Accepts]: Start accepts. Automaton has 8404 states and 38687 transitions. Word has length 21 [2020-10-22 02:26:09,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:26:09,876 INFO L481 AbstractCegarLoop]: Abstraction has 8404 states and 38687 transitions. [2020-10-22 02:26:09,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-22 02:26:09,877 INFO L276 IsEmpty]: Start isEmpty. Operand 8404 states and 38687 transitions. [2020-10-22 02:26:09,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-22 02:26:09,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:26:09,878 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:26:10,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2020-10-22 02:26:10,079 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:26:10,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:26:10,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1949121545, now seen corresponding path program 2 times [2020-10-22 02:26:10,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:26:10,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202279111] [2020-10-22 02:26:10,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:26:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:26:10,196 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:26:10,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202279111] [2020-10-22 02:26:10,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370456437] [2020-10-22 02:26:10,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:26:10,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 02:26:10,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:26:10,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-22 02:26:10,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:26:10,529 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:26:10,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:26:10,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2020-10-22 02:26:10,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1930328204] [2020-10-22 02:26:10,530 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:26:10,532 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:26:10,537 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-10-22 02:26:10,537 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:26:10,882 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 7 new interpolants: [399246#(and (= ULTIMATE.start_main_~i~0 0) (<= ~x~0 0)), 399244#(and (= ULTIMATE.start_main_~i~0 0) (<= thr2Thread1of5ForFork1_~t~0 0)), 399245#(<= (+ ~x~0 2) ULTIMATE.start_main_~i~0), 399242#(<= (+ thr2Thread1of5ForFork1_~t~0 2) ULTIMATE.start_main_~i~0), 399243#(<= (+ thr2Thread1of5ForFork1_~t~0 1) ULTIMATE.start_main_~i~0), 399240#(<= (+ thr2Thread1of5ForFork1_~t~0 3) ~n~0), 399241#(<= (+ ~x~0 3) ~n~0)] [2020-10-22 02:26:10,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-22 02:26:10,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:26:10,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-22 02:26:10,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=824, Unknown=0, NotChecked=0, Total=930 [2020-10-22 02:26:10,884 INFO L87 Difference]: Start difference. First operand 8404 states and 38687 transitions. Second operand 20 states. [2020-10-22 02:26:15,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:26:15,873 INFO L93 Difference]: Finished difference Result 35915 states and 131368 transitions. [2020-10-22 02:26:15,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-10-22 02:26:15,874 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 21 [2020-10-22 02:26:15,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:26:15,969 INFO L225 Difference]: With dead ends: 35915 [2020-10-22 02:26:15,969 INFO L226 Difference]: Without dead ends: 35884 [2020-10-22 02:26:15,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4061 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1882, Invalid=10550, Unknown=0, NotChecked=0, Total=12432 [2020-10-22 02:26:16,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35884 states. [2020-10-22 02:26:16,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35884 to 8291. [2020-10-22 02:26:16,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8291 states. [2020-10-22 02:26:16,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8291 states to 8291 states and 38135 transitions. [2020-10-22 02:26:16,450 INFO L78 Accepts]: Start accepts. Automaton has 8291 states and 38135 transitions. Word has length 21 [2020-10-22 02:26:16,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:26:16,450 INFO L481 AbstractCegarLoop]: Abstraction has 8291 states and 38135 transitions. [2020-10-22 02:26:16,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-22 02:26:16,450 INFO L276 IsEmpty]: Start isEmpty. Operand 8291 states and 38135 transitions. [2020-10-22 02:26:16,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-22 02:26:16,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:26:16,452 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:26:16,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:26:16,652 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:26:16,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:26:16,653 INFO L82 PathProgramCache]: Analyzing trace with hash 595859895, now seen corresponding path program 3 times [2020-10-22 02:26:16,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:26:16,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226564903] [2020-10-22 02:26:16,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:26:16,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:26:16,769 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:26:16,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226564903] [2020-10-22 02:26:16,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026961296] [2020-10-22 02:26:16,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:26:16,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-22 02:26:16,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:26:16,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-22 02:26:16,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:26:17,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:26:17,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:26:17,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2020-10-22 02:26:17,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1722316709] [2020-10-22 02:26:17,080 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:26:17,082 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:26:17,087 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-10-22 02:26:17,087 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:26:17,467 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 9 new interpolants: [451990#(<= (+ ~x~0 2) ~n~0), 451991#(<= (+ thr2Thread2of5ForFork1_~t~0 3) ~n~0), 451989#(<= (+ thr2Thread1of5ForFork1_~t~0 2) ~n~0), 451996#(<= (+ thr2Thread2of5ForFork1_~t~0 1) ULTIMATE.start_main_~i~0), 451997#(<= (+ ~x~0 2) ULTIMATE.start_main_~i~0), 451994#(<= (+ ~x~0 1) ULTIMATE.start_main_~i~0), 451995#(<= (+ thr2Thread2of5ForFork1_~t~0 2) ULTIMATE.start_main_~i~0), 451992#(<= (+ ~x~0 3) ~n~0), 451993#(<= (+ thr2Thread1of5ForFork1_~t~0 1) ULTIMATE.start_main_~i~0)] [2020-10-22 02:26:17,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-22 02:26:17,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:26:17,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-22 02:26:17,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2020-10-22 02:26:17,469 INFO L87 Difference]: Start difference. First operand 8291 states and 38135 transitions. Second operand 21 states. [2020-10-22 02:26:20,785 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2020-10-22 02:26:25,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:26:25,434 INFO L93 Difference]: Finished difference Result 46520 states and 166387 transitions. [2020-10-22 02:26:25,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2020-10-22 02:26:25,435 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2020-10-22 02:26:25,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:26:25,548 INFO L225 Difference]: With dead ends: 46520 [2020-10-22 02:26:25,548 INFO L226 Difference]: Without dead ends: 46496 [2020-10-22 02:26:25,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9094 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=3978, Invalid=21144, Unknown=0, NotChecked=0, Total=25122 [2020-10-22 02:26:25,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46496 states. [2020-10-22 02:26:26,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46496 to 7861. [2020-10-22 02:26:26,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-10-22 02:26:26,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-10-22 02:26:26,130 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-10-22 02:26:26,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:26:26,130 INFO L481 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-10-22 02:26:26,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-22 02:26:26,130 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-10-22 02:26:26,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-22 02:26:26,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:26:26,132 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:26:26,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-10-22 02:26:26,333 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:26:26,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:26:26,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1628474953, now seen corresponding path program 4 times [2020-10-22 02:26:26,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:26:26,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476915114] [2020-10-22 02:26:26,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:26:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:26:26,457 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:26:26,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476915114] [2020-10-22 02:26:26,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732820532] [2020-10-22 02:26:26,457 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:26:26,540 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 02:26:26,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:26:26,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-22 02:26:26,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:26:26,768 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:26:26,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:26:26,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2020-10-22 02:26:26,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [724314601] [2020-10-22 02:26:26,769 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:26:26,770 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:26:26,775 INFO L252 McrAutomatonBuilder]: Finished intersection with 30 states and 37 transitions. [2020-10-22 02:26:26,775 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:26:26,974 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [514582#(<= (+ ~x~0 2) ULTIMATE.start_main_~i~0), 514581#(<= (+ ~x~0 3) ~n~0), 514580#(<= (+ thr2Thread2of5ForFork1_~t~0 1) ULTIMATE.start_main_~i~0), 514579#(<= (+ thr2Thread2of5ForFork1_~t~0 2) ULTIMATE.start_main_~i~0), 514578#(<= (+ thr2Thread2of5ForFork1_~t~0 3) ~n~0)] [2020-10-22 02:26:26,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-22 02:26:26,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:26:26,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-22 02:26:26,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2020-10-22 02:26:26,975 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 18 states. [2020-10-22 02:26:31,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:26:31,670 INFO L93 Difference]: Finished difference Result 34092 states and 124290 transitions. [2020-10-22 02:26:31,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-10-22 02:26:31,671 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2020-10-22 02:26:31,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:26:31,753 INFO L225 Difference]: With dead ends: 34092 [2020-10-22 02:26:31,753 INFO L226 Difference]: Without dead ends: 34061 [2020-10-22 02:26:31,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3408 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1731, Invalid=8775, Unknown=0, NotChecked=0, Total=10506 [2020-10-22 02:26:31,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34061 states. [2020-10-22 02:26:32,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34061 to 7748. [2020-10-22 02:26:32,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-10-22 02:26:32,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-10-22 02:26:32,428 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-10-22 02:26:32,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:26:32,428 INFO L481 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-10-22 02:26:32,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-22 02:26:32,428 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-10-22 02:26:32,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-22 02:26:32,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:26:32,430 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:26:32,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:26:32,637 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:26:32,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:26:32,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1151196169, now seen corresponding path program 5 times [2020-10-22 02:26:32,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:26:32,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848272526] [2020-10-22 02:26:32,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:26:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:26:32,801 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:26:32,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848272526] [2020-10-22 02:26:32,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967412732] [2020-10-22 02:26:32,802 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:26:32,907 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-22 02:26:32,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:26:32,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-22 02:26:32,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:26:33,191 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:26:33,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:26:33,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2020-10-22 02:26:33,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1649552109] [2020-10-22 02:26:33,192 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:26:33,194 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:26:33,199 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-22 02:26:33,199 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:26:33,199 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:26:33,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-22 02:26:33,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:26:33,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-22 02:26:33,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2020-10-22 02:26:33,200 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 13 states. [2020-10-22 02:26:35,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:26:35,204 INFO L93 Difference]: Finished difference Result 29794 states and 111014 transitions. [2020-10-22 02:26:35,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-22 02:26:35,205 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 21 [2020-10-22 02:26:35,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:26:35,278 INFO L225 Difference]: With dead ends: 29794 [2020-10-22 02:26:35,278 INFO L226 Difference]: Without dead ends: 29782 [2020-10-22 02:26:35,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1094 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=764, Invalid=3268, Unknown=0, NotChecked=0, Total=4032 [2020-10-22 02:26:35,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29782 states. [2020-10-22 02:26:35,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29782 to 7526. [2020-10-22 02:26:35,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7526 states. [2020-10-22 02:26:35,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7526 states to 7526 states and 34524 transitions. [2020-10-22 02:26:35,713 INFO L78 Accepts]: Start accepts. Automaton has 7526 states and 34524 transitions. Word has length 21 [2020-10-22 02:26:35,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:26:35,714 INFO L481 AbstractCegarLoop]: Abstraction has 7526 states and 34524 transitions. [2020-10-22 02:26:35,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-22 02:26:35,714 INFO L276 IsEmpty]: Start isEmpty. Operand 7526 states and 34524 transitions. [2020-10-22 02:26:35,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-22 02:26:35,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:26:35,715 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:26:35,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-10-22 02:26:35,930 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:26:35,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:26:35,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1119204169, now seen corresponding path program 6 times [2020-10-22 02:26:35,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:26:35,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46828322] [2020-10-22 02:26:35,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:26:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:26:36,063 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:26:36,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46828322] [2020-10-22 02:26:36,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791413921] [2020-10-22 02:26:36,064 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:26:36,148 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-22 02:26:36,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:26:36,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-22 02:26:36,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:26:36,378 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:26:36,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:26:36,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2020-10-22 02:26:36,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [9466512] [2020-10-22 02:26:36,379 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:26:36,381 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:26:36,384 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-22 02:26:36,384 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:26:36,385 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:26:36,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-22 02:26:36,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:26:36,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-22 02:26:36,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2020-10-22 02:26:36,386 INFO L87 Difference]: Start difference. First operand 7526 states and 34524 transitions. Second operand 13 states. [2020-10-22 02:26:38,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:26:38,598 INFO L93 Difference]: Finished difference Result 34727 states and 132612 transitions. [2020-10-22 02:26:38,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-22 02:26:38,599 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 21 [2020-10-22 02:26:38,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:26:38,687 INFO L225 Difference]: With dead ends: 34727 [2020-10-22 02:26:38,687 INFO L226 Difference]: Without dead ends: 34710 [2020-10-22 02:26:38,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1020 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=731, Invalid=3051, Unknown=0, NotChecked=0, Total=3782 [2020-10-22 02:26:38,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34710 states. [2020-10-22 02:26:39,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34710 to 7221. [2020-10-22 02:26:39,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7221 states. [2020-10-22 02:26:39,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7221 states to 7221 states and 33268 transitions. [2020-10-22 02:26:39,148 INFO L78 Accepts]: Start accepts. Automaton has 7221 states and 33268 transitions. Word has length 21 [2020-10-22 02:26:39,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:26:39,148 INFO L481 AbstractCegarLoop]: Abstraction has 7221 states and 33268 transitions. [2020-10-22 02:26:39,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-22 02:26:39,148 INFO L276 IsEmpty]: Start isEmpty. Operand 7221 states and 33268 transitions. [2020-10-22 02:26:39,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-22 02:26:39,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:26:39,149 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:26:39,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-10-22 02:26:39,350 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:26:39,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:26:39,351 INFO L82 PathProgramCache]: Analyzing trace with hash -721565217, now seen corresponding path program 1 times [2020-10-22 02:26:39,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:26:39,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800428264] [2020-10-22 02:26:39,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:26:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:26:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-22 02:26:39,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800428264] [2020-10-22 02:26:39,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:26:39,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:26:39,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1582634344] [2020-10-22 02:26:39,392 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:26:39,394 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:26:39,397 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-22 02:26:39,398 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:26:39,398 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:26:39,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:26:39,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:26:39,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:26:39,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:26:39,399 INFO L87 Difference]: Start difference. First operand 7221 states and 33268 transitions. Second operand 5 states. [2020-10-22 02:26:39,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:26:39,612 INFO L93 Difference]: Finished difference Result 14122 states and 60315 transitions. [2020-10-22 02:26:39,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 02:26:39,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-22 02:26:39,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:26:39,657 INFO L225 Difference]: With dead ends: 14122 [2020-10-22 02:26:39,658 INFO L226 Difference]: Without dead ends: 14091 [2020-10-22 02:26:39,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:26:39,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14091 states. [2020-10-22 02:26:39,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14091 to 8573. [2020-10-22 02:26:39,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-10-22 02:26:39,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-10-22 02:26:39,952 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-10-22 02:26:39,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:26:39,953 INFO L481 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-10-22 02:26:39,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:26:39,953 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-10-22 02:26:39,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-22 02:26:39,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:26:39,955 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:26:39,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-22 02:26:39,955 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:26:39,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:26:39,956 INFO L82 PathProgramCache]: Analyzing trace with hash -70442843, now seen corresponding path program 1 times [2020-10-22 02:26:39,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:26:39,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693238654] [2020-10-22 02:26:39,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:26:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:26:40,071 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:26:40,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693238654] [2020-10-22 02:26:40,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60665890] [2020-10-22 02:26:40,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:26:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:26:40,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-22 02:26:40,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:26:40,388 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:26:40,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:26:40,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2020-10-22 02:26:40,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1658468317] [2020-10-22 02:26:40,388 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:26:40,390 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:26:40,397 INFO L252 McrAutomatonBuilder]: Finished intersection with 48 states and 71 transitions. [2020-10-22 02:26:40,397 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:26:40,906 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 8 new interpolants: [690026#(<= (+ ~x~0 4) ~n~0), 690027#(<= (+ ~x~0 3) ULTIMATE.start_main_~i~0), 690024#(<= (+ thr2Thread1of5ForFork1_~t~0 3) ULTIMATE.start_main_~i~0), 690025#(<= (+ thr2Thread1of5ForFork1_~t~0 2) ULTIMATE.start_main_~i~0), 690030#(and (= ULTIMATE.start_main_~i~0 0) (<= ~x~0 0)), 690028#(<= (+ thr2Thread1of5ForFork1_~t~0 1) ULTIMATE.start_main_~i~0), 690029#(and (= ULTIMATE.start_main_~i~0 0) (<= thr2Thread1of5ForFork1_~t~0 0)), 690023#(<= (+ thr2Thread1of5ForFork1_~t~0 4) ~n~0)] [2020-10-22 02:26:40,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-22 02:26:40,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:26:40,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-22 02:26:40,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2020-10-22 02:26:40,908 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 20 states. [2020-10-22 02:26:43,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:26:43,633 INFO L93 Difference]: Finished difference Result 22923 states and 91185 transitions. [2020-10-22 02:26:43,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-22 02:26:43,634 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2020-10-22 02:26:43,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:26:43,693 INFO L225 Difference]: With dead ends: 22923 [2020-10-22 02:26:43,693 INFO L226 Difference]: Without dead ends: 22881 [2020-10-22 02:26:43,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1087 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=734, Invalid=3556, Unknown=0, NotChecked=0, Total=4290 [2020-10-22 02:26:43,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22881 states. [2020-10-22 02:26:44,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22881 to 8847. [2020-10-22 02:26:44,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-10-22 02:26:44,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-10-22 02:26:44,064 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-10-22 02:26:44,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:26:44,064 INFO L481 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-10-22 02:26:44,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-22 02:26:44,064 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-10-22 02:26:44,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-22 02:26:44,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:26:44,066 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:26:44,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-22 02:26:44,281 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:26:44,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:26:44,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1198738568, now seen corresponding path program 1 times [2020-10-22 02:26:44,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:26:44,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558408845] [2020-10-22 02:26:44,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:26:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:26:44,392 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:26:44,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558408845] [2020-10-22 02:26:44,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906040830] [2020-10-22 02:26:44,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:26:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:26:44,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-22 02:26:44,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:26:44,701 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:26:44,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:26:44,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2020-10-22 02:26:44,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1113264168] [2020-10-22 02:26:44,702 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:26:44,705 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:26:44,711 INFO L252 McrAutomatonBuilder]: Finished intersection with 40 states and 55 transitions. [2020-10-22 02:26:44,712 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:26:45,022 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [730811#(<= (+ ~x~0 3) ULTIMATE.start_main_~i~0), 730810#(<= (+ ~x~0 4) ~n~0), 730809#(<= (+ thr2Thread2of5ForFork1_~t~0 3) ULTIMATE.start_main_~i~0), 730808#(<= (+ thr2Thread2of5ForFork1_~t~0 4) ~n~0), 730813#(<= (+ thr2Thread2of5ForFork1_~t~0 1) ULTIMATE.start_main_~i~0), 730812#(<= (+ thr2Thread2of5ForFork1_~t~0 2) ULTIMATE.start_main_~i~0)] [2020-10-22 02:26:45,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-22 02:26:45,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:26:45,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-22 02:26:45,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2020-10-22 02:26:45,023 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 18 states. [2020-10-22 02:26:47,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:26:47,612 INFO L93 Difference]: Finished difference Result 23928 states and 95439 transitions. [2020-10-22 02:26:47,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-22 02:26:47,613 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 23 [2020-10-22 02:26:47,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:26:47,672 INFO L225 Difference]: With dead ends: 23928 [2020-10-22 02:26:47,673 INFO L226 Difference]: Without dead ends: 23880 [2020-10-22 02:26:47,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=766, Invalid=3016, Unknown=0, NotChecked=0, Total=3782 [2020-10-22 02:26:47,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23880 states. [2020-10-22 02:26:48,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23880 to 9115. [2020-10-22 02:26:48,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-10-22 02:26:48,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-10-22 02:26:48,071 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-10-22 02:26:48,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:26:48,071 INFO L481 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-10-22 02:26:48,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-22 02:26:48,072 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-10-22 02:26:48,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-22 02:26:48,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:26:48,074 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:26:48,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:26:48,274 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:26:48,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:26:48,275 INFO L82 PathProgramCache]: Analyzing trace with hash 220660185, now seen corresponding path program 1 times [2020-10-22 02:26:48,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:26:48,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474796874] [2020-10-22 02:26:48,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:26:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:26:48,396 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:26:48,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474796874] [2020-10-22 02:26:48,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804555186] [2020-10-22 02:26:48,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:26:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:26:48,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-22 02:26:48,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:26:48,698 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:26:48,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:26:48,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2020-10-22 02:26:48,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [226540512] [2020-10-22 02:26:48,699 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:26:48,701 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:26:48,706 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 39 transitions. [2020-10-22 02:26:48,706 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:26:48,897 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [773131#(<= (+ ~x~0 3) ULTIMATE.start_main_~i~0), 773130#(<= (+ ~x~0 4) ~n~0), 773129#(<= (+ thr2Thread3of5ForFork1_~t~0 3) ULTIMATE.start_main_~i~0), 773128#(<= (+ thr2Thread3of5ForFork1_~t~0 4) ~n~0), 773132#(<= (+ thr2Thread3of5ForFork1_~t~0 2) ULTIMATE.start_main_~i~0)] [2020-10-22 02:26:48,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-22 02:26:48,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:26:48,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-22 02:26:48,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2020-10-22 02:26:48,898 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 17 states. [2020-10-22 02:26:51,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:26:51,168 INFO L93 Difference]: Finished difference Result 24684 states and 98912 transitions. [2020-10-22 02:26:51,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-22 02:26:51,169 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 23 [2020-10-22 02:26:51,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:26:51,231 INFO L225 Difference]: With dead ends: 24684 [2020-10-22 02:26:51,231 INFO L226 Difference]: Without dead ends: 24623 [2020-10-22 02:26:51,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=631, Invalid=2561, Unknown=0, NotChecked=0, Total=3192 [2020-10-22 02:26:51,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24623 states. [2020-10-22 02:26:51,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24623 to 9320. [2020-10-22 02:26:51,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-10-22 02:26:51,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-10-22 02:26:51,632 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-10-22 02:26:51,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:26:51,632 INFO L481 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-10-22 02:26:51,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-22 02:26:51,633 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-10-22 02:26:51,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-22 02:26:51,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:26:51,635 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:26:51,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-10-22 02:26:51,849 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:26:51,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:26:51,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1934456551, now seen corresponding path program 2 times [2020-10-22 02:26:51,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:26:51,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101221294] [2020-10-22 02:26:51,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:26:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:26:51,971 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:26:51,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101221294] [2020-10-22 02:26:51,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696775412] [2020-10-22 02:26:51,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:26:52,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 02:26:52,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:26:52,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 02:26:52,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:26:52,206 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-22 02:26:52,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:26:52,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 18 [2020-10-22 02:26:52,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [334401826] [2020-10-22 02:26:52,207 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:26:52,209 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:26:52,212 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-10-22 02:26:52,213 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:26:52,213 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:26:52,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-22 02:26:52,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:26:52,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-22 02:26:52,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-10-22 02:26:52,214 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 12 states. [2020-10-22 02:26:53,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:26:53,305 INFO L93 Difference]: Finished difference Result 21469 states and 87720 transitions. [2020-10-22 02:26:53,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-22 02:26:53,306 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-22 02:26:53,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:26:53,361 INFO L225 Difference]: With dead ends: 21469 [2020-10-22 02:26:53,361 INFO L226 Difference]: Without dead ends: 21432 [2020-10-22 02:26:53,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=300, Invalid=890, Unknown=0, NotChecked=0, Total=1190 [2020-10-22 02:26:53,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21432 states. [2020-10-22 02:26:53,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21432 to 9401. [2020-10-22 02:26:53,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-10-22 02:26:53,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-10-22 02:26:53,745 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-10-22 02:26:53,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:26:53,746 INFO L481 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-10-22 02:26:53,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-22 02:26:53,746 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-10-22 02:26:53,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-22 02:26:53,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:26:53,749 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:26:53,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:26:53,957 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:26:53,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:26:53,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1934482312, now seen corresponding path program 2 times [2020-10-22 02:26:53,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:26:53,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236892055] [2020-10-22 02:26:53,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:26:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:26:54,087 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:26:54,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236892055] [2020-10-22 02:26:54,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622199700] [2020-10-22 02:26:54,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:26:54,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 02:26:54,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:26:54,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 02:26:54,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:26:54,320 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-22 02:26:54,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:26:54,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 18 [2020-10-22 02:26:54,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1548128310] [2020-10-22 02:26:54,321 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:26:54,323 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:26:54,327 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-10-22 02:26:54,327 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:26:54,327 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:26:54,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-22 02:26:54,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:26:54,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-22 02:26:54,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-10-22 02:26:54,328 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 12 states. [2020-10-22 02:26:55,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:26:55,673 INFO L93 Difference]: Finished difference Result 24049 states and 100334 transitions. [2020-10-22 02:26:55,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-22 02:26:55,674 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-22 02:26:55,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:26:55,738 INFO L225 Difference]: With dead ends: 24049 [2020-10-22 02:26:55,738 INFO L226 Difference]: Without dead ends: 24012 [2020-10-22 02:26:55,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=300, Invalid=890, Unknown=0, NotChecked=0, Total=1190 [2020-10-22 02:26:55,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24012 states. [2020-10-22 02:26:56,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24012 to 9396. [2020-10-22 02:26:56,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-10-22 02:26:56,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-10-22 02:26:56,126 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-10-22 02:26:56,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:26:56,126 INFO L481 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-10-22 02:26:56,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-22 02:26:56,126 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-10-22 02:26:56,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-22 02:26:56,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:26:56,129 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:26:56,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:26:56,329 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:26:56,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:26:56,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1934448987, now seen corresponding path program 2 times [2020-10-22 02:26:56,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:26:56,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987122120] [2020-10-22 02:26:56,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:26:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:26:56,450 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:26:56,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987122120] [2020-10-22 02:26:56,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601150739] [2020-10-22 02:26:56,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:26:56,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 02:26:56,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:26:56,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-22 02:26:56,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:26:56,702 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-22 02:26:56,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:26:56,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 18 [2020-10-22 02:26:56,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1573236927] [2020-10-22 02:26:56,703 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:26:56,705 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:26:56,709 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-10-22 02:26:56,709 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:26:56,710 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:26:56,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-22 02:26:56,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:26:56,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-22 02:26:56,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-10-22 02:26:56,711 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 12 states. [2020-10-22 02:26:57,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:26:57,878 INFO L93 Difference]: Finished difference Result 23916 states and 99572 transitions. [2020-10-22 02:26:57,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-22 02:26:57,879 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-22 02:26:57,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:26:57,939 INFO L225 Difference]: With dead ends: 23916 [2020-10-22 02:26:57,939 INFO L226 Difference]: Without dead ends: 23879 [2020-10-22 02:26:57,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=300, Invalid=890, Unknown=0, NotChecked=0, Total=1190 [2020-10-22 02:26:58,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23879 states. [2020-10-22 02:26:58,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23879 to 9426. [2020-10-22 02:26:58,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-10-22 02:26:58,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-10-22 02:26:58,328 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-10-22 02:26:58,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:26:58,328 INFO L481 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-10-22 02:26:58,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-22 02:26:58,329 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-10-22 02:26:58,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-22 02:26:58,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:26:58,332 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:26:58,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2020-10-22 02:26:58,533 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:26:58,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:26:58,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1759604926, now seen corresponding path program 1 times [2020-10-22 02:26:58,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:26:58,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719857750] [2020-10-22 02:26:58,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:26:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:26:58,669 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-22 02:26:58,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719857750] [2020-10-22 02:26:58,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281642062] [2020-10-22 02:26:58,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:26:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:26:58,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-22 02:26:58,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:26:59,060 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:26:59,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:26:59,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 23 [2020-10-22 02:26:59,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [677753354] [2020-10-22 02:26:59,061 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:26:59,065 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:26:59,078 INFO L252 McrAutomatonBuilder]: Finished intersection with 66 states and 105 transitions. [2020-10-22 02:26:59,078 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:26:59,910 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 13 new interpolants: [942854#(and (= ULTIMATE.start_main_~i~0 0) (<= ~x~0 0)), 942852#(and (= ULTIMATE.start_main_~i~0 0) (<= thr2Thread1of5ForFork1_~t~0 0)), 942853#(<= (+ ~x~0 3) ULTIMATE.start_main_~i~0), 942850#(<= (+ thr2Thread1of5ForFork1_~t~0 1) ULTIMATE.start_main_~i~0), 942851#(<= (+ ~x~0 4) ~n~0), 942848#(<= (+ thr2Thread1of5ForFork1_~t~0 3) ULTIMATE.start_main_~i~0), 942849#(<= (+ thr2Thread1of5ForFork1_~t~0 2) ULTIMATE.start_main_~i~0), 942846#(<= (+ ~x~0 2) ULTIMATE.start_main_~i~0), 942847#(<= (+ thr2Thread1of5ForFork1_~t~0 4) ~n~0), 942844#(<= (+ thr2Thread2of5ForFork1_~t~0 1) ULTIMATE.start_main_~i~0), 942845#(<= (+ ~x~0 3) ~n~0), 942842#(<= (+ thr2Thread2of5ForFork1_~t~0 3) ~n~0), 942843#(<= (+ thr2Thread2of5ForFork1_~t~0 2) ULTIMATE.start_main_~i~0)] [2020-10-22 02:26:59,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-22 02:26:59,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:26:59,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-22 02:26:59,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1267, Unknown=0, NotChecked=0, Total=1406 [2020-10-22 02:26:59,911 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 26 states. [2020-10-22 02:27:10,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:27:10,065 INFO L93 Difference]: Finished difference Result 46653 states and 171055 transitions. [2020-10-22 02:27:10,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2020-10-22 02:27:10,068 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 25 [2020-10-22 02:27:10,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:27:10,187 INFO L225 Difference]: With dead ends: 46653 [2020-10-22 02:27:10,187 INFO L226 Difference]: Without dead ends: 46594 [2020-10-22 02:27:10,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12469 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=5196, Invalid=29586, Unknown=0, NotChecked=0, Total=34782 [2020-10-22 02:27:10,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46594 states. [2020-10-22 02:27:10,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46594 to 9691. [2020-10-22 02:27:10,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9691 states. [2020-10-22 02:27:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9691 states to 9691 states and 44391 transitions. [2020-10-22 02:27:11,120 INFO L78 Accepts]: Start accepts. Automaton has 9691 states and 44391 transitions. Word has length 25 [2020-10-22 02:27:11,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:27:11,120 INFO L481 AbstractCegarLoop]: Abstraction has 9691 states and 44391 transitions. [2020-10-22 02:27:11,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-22 02:27:11,120 INFO L276 IsEmpty]: Start isEmpty. Operand 9691 states and 44391 transitions. [2020-10-22 02:27:11,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-22 02:27:11,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:27:11,124 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:27:11,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:27:11,324 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:27:11,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:27:11,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1115963617, now seen corresponding path program 1 times [2020-10-22 02:27:11,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:27:11,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545815678] [2020-10-22 02:27:11,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:27:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:27:11,447 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 02:27:11,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545815678] [2020-10-22 02:27:11,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504728686] [2020-10-22 02:27:11,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:27:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:27:11,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-22 02:27:11,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:27:11,837 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:27:11,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:27:11,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 22 [2020-10-22 02:27:11,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [982263526] [2020-10-22 02:27:11,838 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:27:11,841 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:27:11,850 INFO L252 McrAutomatonBuilder]: Finished intersection with 58 states and 89 transitions. [2020-10-22 02:27:11,850 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:27:12,603 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 12 new interpolants: [1009295#(and (= ULTIMATE.start_main_~i~0 0) (<= ~x~0 0)), 1009294#(and (= ULTIMATE.start_main_~i~0 0) (<= thr2Thread1of5ForFork1_~t~0 0)), 1009293#(<= (+ thr2Thread1of5ForFork1_~t~0 1) ULTIMATE.start_main_~i~0), 1009292#(<= (+ ~x~0 3) ULTIMATE.start_main_~i~0), 1009291#(<= (+ ~x~0 4) ~n~0), 1009290#(<= (+ thr2Thread1of5ForFork1_~t~0 2) ULTIMATE.start_main_~i~0), 1009289#(<= (+ thr2Thread1of5ForFork1_~t~0 3) ULTIMATE.start_main_~i~0), 1009288#(<= (+ ~x~0 2) ULTIMATE.start_main_~i~0), 1009287#(<= (+ thr2Thread3of5ForFork1_~t~0 2) ULTIMATE.start_main_~i~0), 1009286#(<= (+ thr2Thread1of5ForFork1_~t~0 4) ~n~0), 1009285#(<= (+ ~x~0 3) ~n~0), 1009284#(<= (+ thr2Thread3of5ForFork1_~t~0 3) ~n~0)] [2020-10-22 02:27:12,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-22 02:27:12,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:27:12,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-22 02:27:12,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1138, Unknown=0, NotChecked=0, Total=1260 [2020-10-22 02:27:12,605 INFO L87 Difference]: Start difference. First operand 9691 states and 44391 transitions. Second operand 24 states. [2020-10-22 02:27:21,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:27:21,730 INFO L93 Difference]: Finished difference Result 45902 states and 168669 transitions. [2020-10-22 02:27:21,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2020-10-22 02:27:21,731 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 25 [2020-10-22 02:27:21,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:27:21,836 INFO L225 Difference]: With dead ends: 45902 [2020-10-22 02:27:21,836 INFO L226 Difference]: Without dead ends: 45843 [2020-10-22 02:27:21,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9725 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=4008, Invalid=23382, Unknown=0, NotChecked=0, Total=27390 [2020-10-22 02:27:22,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45843 states. [2020-10-22 02:27:22,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45843 to 9814. [2020-10-22 02:27:22,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9814 states. [2020-10-22 02:27:22,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9814 states to 9814 states and 45150 transitions. [2020-10-22 02:27:22,702 INFO L78 Accepts]: Start accepts. Automaton has 9814 states and 45150 transitions. Word has length 25 [2020-10-22 02:27:22,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:27:22,702 INFO L481 AbstractCegarLoop]: Abstraction has 9814 states and 45150 transitions. [2020-10-22 02:27:22,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-22 02:27:22,703 INFO L276 IsEmpty]: Start isEmpty. Operand 9814 states and 45150 transitions. [2020-10-22 02:27:22,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-22 02:27:22,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:27:22,706 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:27:22,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-22 02:27:22,907 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:27:22,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:27:22,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1023886943, now seen corresponding path program 2 times [2020-10-22 02:27:22,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:27:22,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930596973] [2020-10-22 02:27:22,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:27:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:27:23,066 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:27:23,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930596973] [2020-10-22 02:27:23,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497141764] [2020-10-22 02:27:23,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:27:23,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 02:27:23,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:27:23,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-22 02:27:23,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:27:23,465 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-22 02:27:23,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:27:23,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 23 [2020-10-22 02:27:23,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1208223250] [2020-10-22 02:27:23,466 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:27:23,468 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:27:23,476 INFO L252 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-10-22 02:27:23,476 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:27:24,049 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 8 new interpolants: [1075184#(<= (+ thr2Thread1of5ForFork1_~t~0 3) ULTIMATE.start_main_~i~0), 1075185#(<= (+ ~x~0 4) ~n~0), 1075186#(<= (+ ~x~0 3) ULTIMATE.start_main_~i~0), 1075187#(<= (+ thr2Thread1of5ForFork1_~t~0 2) ULTIMATE.start_main_~i~0), 1075188#(<= (+ thr2Thread1of5ForFork1_~t~0 1) ULTIMATE.start_main_~i~0), 1075189#(and (= ULTIMATE.start_main_~i~0 0) (<= thr2Thread1of5ForFork1_~t~0 0)), 1075190#(and (= ULTIMATE.start_main_~i~0 0) (<= ~x~0 0)), 1075183#(<= (+ thr2Thread1of5ForFork1_~t~0 4) ~n~0)] [2020-10-22 02:27:24,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-22 02:27:24,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:27:24,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-22 02:27:24,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2020-10-22 02:27:24,050 INFO L87 Difference]: Start difference. First operand 9814 states and 45150 transitions. Second operand 22 states. [2020-10-22 02:27:30,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:27:30,718 INFO L93 Difference]: Finished difference Result 35721 states and 134656 transitions. [2020-10-22 02:27:30,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2020-10-22 02:27:30,719 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2020-10-22 02:27:30,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:27:30,805 INFO L225 Difference]: With dead ends: 35721 [2020-10-22 02:27:30,805 INFO L226 Difference]: Without dead ends: 35681 [2020-10-22 02:27:30,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4509 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2178, Invalid=12342, Unknown=0, NotChecked=0, Total=14520 [2020-10-22 02:27:30,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35681 states. [2020-10-22 02:27:31,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35681 to 9811. [2020-10-22 02:27:31,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9811 states. [2020-10-22 02:27:31,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9811 states to 9811 states and 45097 transitions. [2020-10-22 02:27:31,558 INFO L78 Accepts]: Start accepts. Automaton has 9811 states and 45097 transitions. Word has length 25 [2020-10-22 02:27:31,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:27:31,559 INFO L481 AbstractCegarLoop]: Abstraction has 9811 states and 45097 transitions. [2020-10-22 02:27:31,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-22 02:27:31,559 INFO L276 IsEmpty]: Start isEmpty. Operand 9811 states and 45097 transitions. [2020-10-22 02:27:31,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-22 02:27:31,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:27:31,562 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:27:31,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:27:31,763 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:27:31,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:27:31,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1023861182, now seen corresponding path program 2 times [2020-10-22 02:27:31,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:27:31,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792382145] [2020-10-22 02:27:31,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:27:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:27:31,958 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:27:31,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792382145] [2020-10-22 02:27:31,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234062225] [2020-10-22 02:27:31,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:27:32,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 02:27:32,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:27:32,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-22 02:27:32,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:27:32,393 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-22 02:27:32,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:27:32,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 23 [2020-10-22 02:27:32,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1569580790] [2020-10-22 02:27:32,394 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:27:32,396 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:27:32,405 INFO L252 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-10-22 02:27:32,405 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:27:33,019 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 8 new interpolants: [1130807#(<= (+ thr2Thread1of5ForFork1_~t~0 4) ~n~0), 1130809#(<= (+ thr2Thread1of5ForFork1_~t~0 2) ULTIMATE.start_main_~i~0), 1130808#(<= (+ thr2Thread1of5ForFork1_~t~0 3) ULTIMATE.start_main_~i~0), 1130811#(<= (+ ~x~0 3) ULTIMATE.start_main_~i~0), 1130810#(<= (+ ~x~0 4) ~n~0), 1130813#(and (= ULTIMATE.start_main_~i~0 0) (<= thr2Thread1of5ForFork1_~t~0 0)), 1130812#(<= (+ thr2Thread1of5ForFork1_~t~0 1) ULTIMATE.start_main_~i~0), 1130814#(and (= ULTIMATE.start_main_~i~0 0) (<= ~x~0 0))] [2020-10-22 02:27:33,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-22 02:27:33,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:27:33,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-22 02:27:33,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2020-10-22 02:27:33,021 INFO L87 Difference]: Start difference. First operand 9811 states and 45097 transitions. Second operand 22 states. [2020-10-22 02:27:40,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:27:40,365 INFO L93 Difference]: Finished difference Result 35239 states and 132786 transitions. [2020-10-22 02:27:40,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2020-10-22 02:27:40,367 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2020-10-22 02:27:40,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:27:40,463 INFO L225 Difference]: With dead ends: 35239 [2020-10-22 02:27:40,463 INFO L226 Difference]: Without dead ends: 35199 [2020-10-22 02:27:40,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4888 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2340, Invalid=13410, Unknown=0, NotChecked=0, Total=15750 [2020-10-22 02:27:40,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35199 states. [2020-10-22 02:27:40,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35199 to 9699. [2020-10-22 02:27:40,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9699 states. [2020-10-22 02:27:41,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9699 states to 9699 states and 44550 transitions. [2020-10-22 02:27:41,028 INFO L78 Accepts]: Start accepts. Automaton has 9699 states and 44550 transitions. Word has length 25 [2020-10-22 02:27:41,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:27:41,028 INFO L481 AbstractCegarLoop]: Abstraction has 9699 states and 44550 transitions. [2020-10-22 02:27:41,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-22 02:27:41,028 INFO L276 IsEmpty]: Start isEmpty. Operand 9699 states and 44550 transitions. [2020-10-22 02:27:41,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-22 02:27:41,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:27:41,031 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:27:41,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-10-22 02:27:41,232 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:27:41,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:27:41,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1124141246, now seen corresponding path program 3 times [2020-10-22 02:27:41,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:27:41,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920767344] [2020-10-22 02:27:41,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:27:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:27:41,378 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:27:41,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920767344] [2020-10-22 02:27:41,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461216457] [2020-10-22 02:27:41,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:27:41,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-22 02:27:41,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:27:41,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-22 02:27:41,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:27:41,887 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:27:41,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:27:41,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 23 [2020-10-22 02:27:41,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2098986420] [2020-10-22 02:27:41,888 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:27:41,890 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:27:41,900 INFO L252 McrAutomatonBuilder]: Finished intersection with 58 states and 89 transitions. [2020-10-22 02:27:41,900 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:27:42,635 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 11 new interpolants: [1185744#(<= (+ ~x~0 3) ULTIMATE.start_main_~i~0), 1185745#(<= (+ thr2Thread2of5ForFork1_~t~0 1) ULTIMATE.start_main_~i~0), 1185735#(<= (+ thr2Thread1of5ForFork1_~t~0 3) ~n~0), 1185738#(<= (+ ~x~0 3) ~n~0), 1185739#(<= (+ ~x~0 2) ULTIMATE.start_main_~i~0), 1185736#(<= (+ thr2Thread1of5ForFork1_~t~0 2) ULTIMATE.start_main_~i~0), 1185737#(<= (+ thr2Thread1of5ForFork1_~t~0 1) ULTIMATE.start_main_~i~0), 1185742#(<= (+ thr2Thread2of5ForFork1_~t~0 2) ULTIMATE.start_main_~i~0), 1185743#(<= (+ ~x~0 4) ~n~0), 1185740#(<= (+ thr2Thread2of5ForFork1_~t~0 4) ~n~0), 1185741#(<= (+ thr2Thread2of5ForFork1_~t~0 3) ULTIMATE.start_main_~i~0)] [2020-10-22 02:27:42,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-22 02:27:42,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:27:42,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-22 02:27:42,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1123, Unknown=0, NotChecked=0, Total=1260 [2020-10-22 02:27:42,636 INFO L87 Difference]: Start difference. First operand 9699 states and 44550 transitions. Second operand 24 states. [2020-10-22 02:27:56,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:27:56,463 INFO L93 Difference]: Finished difference Result 47295 states and 172892 transitions. [2020-10-22 02:27:56,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2020-10-22 02:27:56,464 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 25 [2020-10-22 02:27:56,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:27:56,598 INFO L225 Difference]: With dead ends: 47295 [2020-10-22 02:27:56,598 INFO L226 Difference]: Without dead ends: 47259 [2020-10-22 02:27:56,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15793 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=6308, Invalid=35922, Unknown=0, NotChecked=0, Total=42230 [2020-10-22 02:27:56,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47259 states. [2020-10-22 02:27:57,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47259 to 9269. [2020-10-22 02:27:57,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9269 states. [2020-10-22 02:27:57,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9269 states to 9269 states and 42353 transitions. [2020-10-22 02:27:57,222 INFO L78 Accepts]: Start accepts. Automaton has 9269 states and 42353 transitions. Word has length 25 [2020-10-22 02:27:57,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:27:57,222 INFO L481 AbstractCegarLoop]: Abstraction has 9269 states and 42353 transitions. [2020-10-22 02:27:57,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-22 02:27:57,222 INFO L276 IsEmpty]: Start isEmpty. Operand 9269 states and 42353 transitions. [2020-10-22 02:27:57,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-22 02:27:57,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:27:57,225 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:27:57,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-22 02:27:57,426 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:27:57,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:27:57,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1218570546, now seen corresponding path program 1 times [2020-10-22 02:27:57,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:27:57,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110995783] [2020-10-22 02:27:57,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:27:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:27:57,587 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-22 02:27:57,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110995783] [2020-10-22 02:27:57,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696712064] [2020-10-22 02:27:57,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:27:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:27:57,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-22 02:27:57,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:27:58,233 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:27:58,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:27:58,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 22 [2020-10-22 02:27:58,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2046570097] [2020-10-22 02:27:58,234 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:27:58,240 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:27:58,256 INFO L252 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-10-22 02:27:58,256 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:27:59,250 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 10 new interpolants: [1252019#(<= (+ thr2Thread2of5ForFork1_~t~0 4) ~n~0), 1252018#(<= (+ ~x~0 2) ULTIMATE.start_main_~i~0), 1252017#(<= (+ thr2Thread3of5ForFork1_~t~0 2) ULTIMATE.start_main_~i~0), 1252016#(<= (+ ~x~0 3) ~n~0), 1252023#(<= (+ ~x~0 4) ~n~0), 1252022#(<= (+ thr2Thread2of5ForFork1_~t~0 1) ULTIMATE.start_main_~i~0), 1252021#(<= (+ thr2Thread2of5ForFork1_~t~0 2) ULTIMATE.start_main_~i~0), 1252020#(<= (+ thr2Thread2of5ForFork1_~t~0 3) ULTIMATE.start_main_~i~0), 1252024#(<= (+ ~x~0 3) ULTIMATE.start_main_~i~0), 1252015#(<= (+ thr2Thread3of5ForFork1_~t~0 3) ~n~0)] [2020-10-22 02:27:59,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-22 02:27:59,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:27:59,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-22 02:27:59,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1004, Unknown=0, NotChecked=0, Total=1122 [2020-10-22 02:27:59,251 INFO L87 Difference]: Start difference. First operand 9269 states and 42353 transitions. Second operand 22 states. [2020-10-22 02:28:11,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:28:11,879 INFO L93 Difference]: Finished difference Result 47641 states and 173437 transitions. [2020-10-22 02:28:11,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2020-10-22 02:28:11,880 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 25 [2020-10-22 02:28:11,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:28:11,991 INFO L225 Difference]: With dead ends: 47641 [2020-10-22 02:28:11,991 INFO L226 Difference]: Without dead ends: 47577 [2020-10-22 02:28:11,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11889 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=4794, Invalid=27068, Unknown=0, NotChecked=0, Total=31862 [2020-10-22 02:28:12,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47577 states. [2020-10-22 02:28:12,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47577 to 9500. [2020-10-22 02:28:12,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9500 states. [2020-10-22 02:28:12,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9500 states to 9500 states and 43460 transitions. [2020-10-22 02:28:12,618 INFO L78 Accepts]: Start accepts. Automaton has 9500 states and 43460 transitions. Word has length 25 [2020-10-22 02:28:12,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:28:12,618 INFO L481 AbstractCegarLoop]: Abstraction has 9500 states and 43460 transitions. [2020-10-22 02:28:12,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-22 02:28:12,618 INFO L276 IsEmpty]: Start isEmpty. Operand 9500 states and 43460 transitions. [2020-10-22 02:28:12,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-22 02:28:12,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:28:12,621 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:28:12,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:28:12,822 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:28:12,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:28:12,823 INFO L82 PathProgramCache]: Analyzing trace with hash -936546190, now seen corresponding path program 2 times [2020-10-22 02:28:12,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:28:12,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690729925] [2020-10-22 02:28:12,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:28:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:28:13,004 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:28:13,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690729925] [2020-10-22 02:28:13,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747257722] [2020-10-22 02:28:13,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:28:13,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 02:28:13,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:28:13,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-22 02:28:13,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:28:13,449 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-22 02:28:13,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:28:13,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 23 [2020-10-22 02:28:13,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1404107929] [2020-10-22 02:28:13,451 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:28:13,453 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:28:13,461 INFO L252 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-10-22 02:28:13,461 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:28:13,885 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [1319056#(<= (+ thr2Thread2of5ForFork1_~t~0 2) ULTIMATE.start_main_~i~0), 1319057#(<= (+ ~x~0 3) ULTIMATE.start_main_~i~0), 1319058#(<= (+ thr2Thread2of5ForFork1_~t~0 1) ULTIMATE.start_main_~i~0), 1319053#(<= (+ thr2Thread2of5ForFork1_~t~0 4) ~n~0), 1319054#(<= (+ ~x~0 4) ~n~0), 1319055#(<= (+ thr2Thread2of5ForFork1_~t~0 3) ULTIMATE.start_main_~i~0)] [2020-10-22 02:28:13,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-22 02:28:13,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:28:13,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-22 02:28:13,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=824, Unknown=0, NotChecked=0, Total=930 [2020-10-22 02:28:13,886 INFO L87 Difference]: Start difference. First operand 9500 states and 43460 transitions. Second operand 20 states. [2020-10-22 02:28:22,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:28:22,017 INFO L93 Difference]: Finished difference Result 34145 states and 128562 transitions. [2020-10-22 02:28:22,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-10-22 02:28:22,019 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 25 [2020-10-22 02:28:22,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:28:22,117 INFO L225 Difference]: With dead ends: 34145 [2020-10-22 02:28:22,117 INFO L226 Difference]: Without dead ends: 34098 [2020-10-22 02:28:22,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4351 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2308, Invalid=11498, Unknown=0, NotChecked=0, Total=13806 [2020-10-22 02:28:22,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34098 states. [2020-10-22 02:28:22,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34098 to 9463. [2020-10-22 02:28:22,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9463 states. [2020-10-22 02:28:22,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9463 states to 9463 states and 43283 transitions. [2020-10-22 02:28:22,796 INFO L78 Accepts]: Start accepts. Automaton has 9463 states and 43283 transitions. Word has length 25 [2020-10-22 02:28:22,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:28:22,796 INFO L481 AbstractCegarLoop]: Abstraction has 9463 states and 43283 transitions. [2020-10-22 02:28:22,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-22 02:28:22,797 INFO L276 IsEmpty]: Start isEmpty. Operand 9463 states and 43283 transitions. [2020-10-22 02:28:22,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-22 02:28:22,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:28:22,801 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:28:23,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:28:23,002 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:28:23,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:28:23,002 INFO L82 PathProgramCache]: Analyzing trace with hash -936538626, now seen corresponding path program 4 times [2020-10-22 02:28:23,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:28:23,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457401850] [2020-10-22 02:28:23,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:28:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:28:23,218 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:28:23,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457401850] [2020-10-22 02:28:23,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027844050] [2020-10-22 02:28:23,219 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:28:23,300 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-22 02:28:23,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:28:23,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-22 02:28:23,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:28:23,692 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:28:23,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:28:23,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2020-10-22 02:28:23,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1983995016] [2020-10-22 02:28:23,693 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:28:23,695 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:28:23,703 INFO L252 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-10-22 02:28:23,703 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:28:24,121 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [1372404#(<= (+ thr2Thread2of5ForFork1_~t~0 3) ULTIMATE.start_main_~i~0), 1372405#(<= (+ ~x~0 3) ULTIMATE.start_main_~i~0), 1372406#(<= (+ thr2Thread2of5ForFork1_~t~0 2) ULTIMATE.start_main_~i~0), 1372407#(<= (+ thr2Thread2of5ForFork1_~t~0 1) ULTIMATE.start_main_~i~0), 1372402#(<= (+ thr2Thread2of5ForFork1_~t~0 4) ~n~0), 1372403#(<= (+ ~x~0 4) ~n~0)] [2020-10-22 02:28:24,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-22 02:28:24,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:28:24,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-22 02:28:24,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=874, Unknown=0, NotChecked=0, Total=992 [2020-10-22 02:28:24,122 INFO L87 Difference]: Start difference. First operand 9463 states and 43283 transitions. Second operand 20 states. [2020-10-22 02:28:32,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:28:32,989 INFO L93 Difference]: Finished difference Result 39744 states and 153247 transitions. [2020-10-22 02:28:32,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2020-10-22 02:28:32,990 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 25 [2020-10-22 02:28:32,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:28:33,087 INFO L225 Difference]: With dead ends: 39744 [2020-10-22 02:28:33,087 INFO L226 Difference]: Without dead ends: 39704 [2020-10-22 02:28:33,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5346 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2577, Invalid=13425, Unknown=0, NotChecked=0, Total=16002 [2020-10-22 02:28:33,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39704 states. [2020-10-22 02:28:33,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39704 to 9364. [2020-10-22 02:28:33,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9364 states. [2020-10-22 02:28:33,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9364 states to 9364 states and 42796 transitions. [2020-10-22 02:28:33,645 INFO L78 Accepts]: Start accepts. Automaton has 9364 states and 42796 transitions. Word has length 25 [2020-10-22 02:28:33,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:28:33,645 INFO L481 AbstractCegarLoop]: Abstraction has 9364 states and 42796 transitions. [2020-10-22 02:28:33,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-22 02:28:33,646 INFO L276 IsEmpty]: Start isEmpty. Operand 9364 states and 42796 transitions. [2020-10-22 02:28:33,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-22 02:28:33,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:28:33,650 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:28:33,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:28:33,851 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:28:33,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:28:33,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1833736738, now seen corresponding path program 3 times [2020-10-22 02:28:33,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:28:33,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001992996] [2020-10-22 02:28:33,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:28:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:28:34,056 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:28:34,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001992996] [2020-10-22 02:28:34,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488562584] [2020-10-22 02:28:34,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 02:28:34,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-22 02:28:34,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 02:28:34,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-22 02:28:34,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 02:28:34,661 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:28:34,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 02:28:34,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2020-10-22 02:28:34,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1623961705] [2020-10-22 02:28:34,662 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:28:34,664 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:28:34,671 INFO L252 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-10-22 02:28:34,671 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:28:35,219 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 9 new interpolants: [1431173#(<= (+ ~x~0 3) ULTIMATE.start_main_~i~0), 1431172#(<= (+ thr2Thread3of5ForFork1_~t~0 3) ULTIMATE.start_main_~i~0), 1431175#(or (<= (+ ~x~0 2) ~n~0) (<= ~n~0 ULTIMATE.start_main_~i~0)), 1431174#(<= (+ thr2Thread3of5ForFork1_~t~0 2) ULTIMATE.start_main_~i~0), 1431169#(<= (+ thr2Thread3of5ForFork1_~t~0 4) ~n~0), 1431168#(<= (+ ~x~0 3) ~n~0), 1431171#(<= (+ ~x~0 2) ULTIMATE.start_main_~i~0), 1431170#(<= (+ ~x~0 4) ~n~0), 1431176#(or (<= (+ ~x~0 2) ~n~0) (<= ~n~0 (+ ULTIMATE.start_main_~i~0 1)))] [2020-10-22 02:28:35,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-22 02:28:35,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:28:35,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-22 02:28:35,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1043, Unknown=0, NotChecked=0, Total=1190 [2020-10-22 02:28:35,221 INFO L87 Difference]: Start difference. First operand 9364 states and 42796 transitions. Second operand 23 states. Received shutdown request... [2020-10-22 02:28:47,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2020-10-22 02:28:48,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-10-22 02:28:48,173 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-22 02:28:48,176 WARN L235 ceAbstractionStarter]: Timeout [2020-10-22 02:28:48,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 02:28:48 BasicIcfg [2020-10-22 02:28:48,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 02:28:48,178 INFO L168 Benchmark]: Toolchain (without parser) took 245391.17 ms. Allocated memory was 146.8 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 101.1 MB in the beginning and 625.9 MB in the end (delta: -524.7 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2020-10-22 02:28:48,178 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-22 02:28:48,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.43 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 100.3 MB in the beginning and 160.0 MB in the end (delta: -59.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-10-22 02:28:48,179 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.10 ms. Allocated memory is still 204.5 MB. Free memory was 160.0 MB in the beginning and 157.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-22 02:28:48,179 INFO L168 Benchmark]: Boogie Preprocessor took 31.27 ms. Allocated memory is still 204.5 MB. Free memory was 157.9 MB in the beginning and 155.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-22 02:28:48,180 INFO L168 Benchmark]: RCFGBuilder took 462.79 ms. Allocated memory is still 204.5 MB. Free memory was 155.9 MB in the beginning and 133.2 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-10-22 02:28:48,180 INFO L168 Benchmark]: TraceAbstraction took 244182.63 ms. Allocated memory was 204.5 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 133.2 MB in the beginning and 625.9 MB in the end (delta: -492.6 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2020-10-22 02:28:48,182 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 652.43 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 100.3 MB in the beginning and 160.0 MB in the end (delta: -59.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.10 ms. Allocated memory is still 204.5 MB. Free memory was 160.0 MB in the beginning and 157.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.27 ms. Allocated memory is still 204.5 MB. Free memory was 157.9 MB in the beginning and 155.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 462.79 ms. Allocated memory is still 204.5 MB. Free memory was 155.9 MB in the beginning and 133.2 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 244182.63 ms. Allocated memory was 204.5 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 133.2 MB in the beginning and 625.9 MB in the end (delta: -492.6 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 542 VarBasedMoverChecksPositive, 6 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.2s, 72 PlacesBefore, 18 PlacesAfterwards, 70 TransitionsBefore, 12 TransitionsAfterwards, 942 CoEnabledTransitionPairs, 6 FixpointIterations, 28 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 8 ConcurrentYvCompositions, 4 ChoiceCompositions, 73 TotalNumberOfCompositions, 919 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 783 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 32 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.3s, 97 PlacesBefore, 31 PlacesAfterwards, 93 TransitionsBefore, 21 TransitionsAfterwards, 1428 CoEnabledTransitionPairs, 6 FixpointIterations, 42 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 8 ConcurrentYvCompositions, 6 ChoiceCompositions, 93 TotalNumberOfCompositions, 1748 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1143 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 48 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.4s, 122 PlacesBefore, 41 PlacesAfterwards, 116 TransitionsBefore, 27 TransitionsAfterwards, 1998 CoEnabledTransitionPairs, 6 FixpointIterations, 59 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 13 TrivialYvCompositions, 7 ConcurrentYvCompositions, 8 ChoiceCompositions, 125 TotalNumberOfCompositions, 2907 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1429 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 56 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.5s, 147 PlacesBefore, 51 PlacesAfterwards, 139 TransitionsBefore, 33 TransitionsAfterwards, 2652 CoEnabledTransitionPairs, 6 FixpointIterations, 79 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 17 TrivialYvCompositions, 8 ConcurrentYvCompositions, 10 ChoiceCompositions, 157 TotalNumberOfCompositions, 4085 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1766 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 58 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.6s, 172 PlacesBefore, 61 PlacesAfterwards, 162 TransitionsBefore, 39 TransitionsAfterwards, 3390 CoEnabledTransitionPairs, 6 FixpointIterations, 93 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 4 ConcurrentYvCompositions, 12 ChoiceCompositions, 175 TotalNumberOfCompositions, 4734 MoverChecksTotal - TimeoutResultAtElement [Line: 683]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 683). Cancelled while BasicCegarLoop was constructing difference of abstraction (9364states) and FLOYD_HOARE automaton (currently 145 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 173 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 66 locations, 1 error locations. Started 5 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 243.8s, OverallIterations: 64, TraceHistogramMax: 5, AutomataDifference: 172.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 13.7s, HoareTripleCheckerStatistics: 2599 SDtfs, 21514 SDslu, 17477 SDs, 0 SdLazy, 53496 SolverSat, 2880 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 38.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4278 GetRequests, 689 SyntacticMatches, 1 SemanticMatches, 3587 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143663 ImplicationChecksByTransitivity, 115.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9814occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 18.1s AutomataMinimizationTime, 59 MinimizatonAttempts, 686836 StatesRemovedByMinimization, 53 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 14.6s InterpolantComputationTime, 1979 NumberOfCodeBlocks, 1979 NumberOfCodeBlocksAsserted, 141 NumberOfCheckSat, 1816 ConstructedInterpolants, 0 QuantifiedInterpolants, 212228 SizeOfPredicates, 247 NumberOfNonLiveVariables, 5517 ConjunctsInSsa, 448 ConjunctsInUnsatCore, 101 InterpolantComputations, 19 PerfectInterpolantSequences, 289/952 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown