/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:24:27,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:24:27,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:24:27,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:24:27,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:24:27,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:24:27,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:24:27,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:24:27,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:24:27,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:24:27,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:24:27,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:24:27,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:24:27,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:24:27,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:24:27,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:24:27,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:24:27,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:24:27,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:24:27,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:24:27,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:24:27,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:24:27,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:24:27,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:24:27,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:24:27,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:24:27,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:24:27,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:24:27,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:24:27,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:24:27,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:24:27,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:24:27,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:24:27,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:24:27,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:24:27,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:24:27,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:24:27,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:24:27,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:24:27,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:24:27,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:24:27,639 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2020-04-18 02:24:27,659 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:24:27,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:24:27,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:24:27,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:24:27,662 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:24:27,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:24:27,663 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:24:27,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:24:27,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:24:27,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:24:27,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:24:27,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:24:27,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:24:27,665 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:24:27,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:24:27,665 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:24:27,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:24:27,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:24:27,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:24:27,666 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:24:27,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:24:27,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:24:27,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:24:27,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:24:27,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:24:27,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:24:27,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:24:27,668 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:24:27,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:24:27,668 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:24:27,964 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:24:27,982 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:24:27,986 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:24:27,987 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:24:27,987 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:24:27,988 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-04-18 02:24:28,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e38736f83/9bbf53eb65f145cfb6d16ba67e1aad42/FLAG4e87a880f [2020-04-18 02:24:28,605 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:24:28,606 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-04-18 02:24:28,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e38736f83/9bbf53eb65f145cfb6d16ba67e1aad42/FLAG4e87a880f [2020-04-18 02:24:28,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e38736f83/9bbf53eb65f145cfb6d16ba67e1aad42 [2020-04-18 02:24:28,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:24:28,914 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:24:28,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:24:28,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:24:28,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:24:28,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:24:28" (1/1) ... [2020-04-18 02:24:28,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@791741c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:28, skipping insertion in model container [2020-04-18 02:24:28,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:24:28" (1/1) ... [2020-04-18 02:24:28,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:24:28,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:24:29,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:24:29,543 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:24:29,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:24:29,696 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:24:29,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:29 WrapperNode [2020-04-18 02:24:29,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:24:29,698 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:24:29,698 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:24:29,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:24:29,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:29" (1/1) ... [2020-04-18 02:24:29,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:29" (1/1) ... [2020-04-18 02:24:29,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:24:29,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:24:29,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:24:29,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:24:29,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:29" (1/1) ... [2020-04-18 02:24:29,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:29" (1/1) ... [2020-04-18 02:24:29,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:29" (1/1) ... [2020-04-18 02:24:29,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:29" (1/1) ... [2020-04-18 02:24:29,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:29" (1/1) ... [2020-04-18 02:24:29,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:29" (1/1) ... [2020-04-18 02:24:29,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:29" (1/1) ... [2020-04-18 02:24:29,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:24:29,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:24:29,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:24:29,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:24:29,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:29" (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 [2020-04-18 02:24:29,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:24:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:24:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:24:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:24:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:24:29,885 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:24:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:24:29,886 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:24:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:24:29,886 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:24:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 02:24:29,886 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 02:24:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:24:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:24:29,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:24:29,889 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:24:30,306 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:24:30,307 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:24:30,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:24:30 BoogieIcfgContainer [2020-04-18 02:24:30,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:24:30,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:24:30,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:24:30,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:24:30,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:24:28" (1/3) ... [2020-04-18 02:24:30,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb89095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:24:30, skipping insertion in model container [2020-04-18 02:24:30,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:24:29" (2/3) ... [2020-04-18 02:24:30,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb89095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:24:30, skipping insertion in model container [2020-04-18 02:24:30,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:24:30" (3/3) ... [2020-04-18 02:24:30,321 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2020-04-18 02:24:30,331 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:24:30,331 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:24:30,339 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:24:30,340 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:24:30,370 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,370 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,371 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,371 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,372 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,372 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,372 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,373 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,373 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,373 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,374 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,374 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,374 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,375 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,375 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,375 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,376 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,376 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,376 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,376 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,377 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,377 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,377 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,378 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,382 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,382 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,383 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,383 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,389 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,389 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,390 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,390 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,393 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,393 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,393 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,394 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,397 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,397 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,397 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,398 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:24:30,411 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 02:24:30,427 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:24:30,428 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:24:30,428 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:24:30,428 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:24:30,428 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:24:30,428 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:24:30,428 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:24:30,428 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:24:30,445 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-04-18 02:24:30,447 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-04-18 02:24:30,493 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-04-18 02:24:30,494 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:24:30,500 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 02:24:30,503 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-04-18 02:24:30,528 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-04-18 02:24:30,529 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:24:30,529 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 02:24:30,532 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-04-18 02:24:30,534 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:24:31,982 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-18 02:24:32,078 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2895 [2020-04-18 02:24:32,078 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-04-18 02:24:32,083 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-04-18 02:24:32,181 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-04-18 02:24:32,184 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-04-18 02:24:32,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:24:32,197 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:32,197 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:32,198 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:32,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:32,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-04-18 02:24:32,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:32,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129726326] [2020-04-18 02:24:32,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:32,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:32,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129726326] [2020-04-18 02:24:32,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:32,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:32,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522251058] [2020-04-18 02:24:32,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 02:24:32,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:32,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 02:24:32,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:24:32,539 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-04-18 02:24:32,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:32,590 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-04-18 02:24:32,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 02:24:32,592 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-18 02:24:32,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:32,620 INFO L225 Difference]: With dead ends: 850 [2020-04-18 02:24:32,620 INFO L226 Difference]: Without dead ends: 706 [2020-04-18 02:24:32,622 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:24:32,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-04-18 02:24:32,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-04-18 02:24:32,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-04-18 02:24:32,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-04-18 02:24:32,763 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-04-18 02:24:32,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:32,766 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-04-18 02:24:32,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 02:24:32,767 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-04-18 02:24:32,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:24:32,771 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:32,771 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:32,771 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:32,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:32,772 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-04-18 02:24:32,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:32,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367702936] [2020-04-18 02:24:32,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:32,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:32,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367702936] [2020-04-18 02:24:32,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:32,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:32,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059099727] [2020-04-18 02:24:32,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:32,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:32,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:32,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:32,953 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-04-18 02:24:33,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:33,008 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-04-18 02:24:33,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:33,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:24:33,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:33,016 INFO L225 Difference]: With dead ends: 802 [2020-04-18 02:24:33,016 INFO L226 Difference]: Without dead ends: 658 [2020-04-18 02:24:33,017 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:33,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-04-18 02:24:33,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-04-18 02:24:33,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-04-18 02:24:33,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-04-18 02:24:33,048 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-04-18 02:24:33,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:33,049 INFO L479 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-04-18 02:24:33,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:33,049 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-04-18 02:24:33,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:24:33,052 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:33,052 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:33,052 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:33,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:33,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1502334909, now seen corresponding path program 1 times [2020-04-18 02:24:33,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:33,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144760645] [2020-04-18 02:24:33,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:33,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:33,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144760645] [2020-04-18 02:24:33,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:33,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:33,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345882049] [2020-04-18 02:24:33,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:33,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:33,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:33,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:33,140 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-04-18 02:24:33,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:33,189 INFO L93 Difference]: Finished difference Result 738 states and 2404 transitions. [2020-04-18 02:24:33,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:33,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:24:33,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:33,195 INFO L225 Difference]: With dead ends: 738 [2020-04-18 02:24:33,196 INFO L226 Difference]: Without dead ends: 618 [2020-04-18 02:24:33,196 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:33,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-04-18 02:24:33,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2020-04-18 02:24:33,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-04-18 02:24:33,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 2058 transitions. [2020-04-18 02:24:33,221 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 2058 transitions. Word has length 12 [2020-04-18 02:24:33,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:33,222 INFO L479 AbstractCegarLoop]: Abstraction has 618 states and 2058 transitions. [2020-04-18 02:24:33,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:33,222 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 2058 transitions. [2020-04-18 02:24:33,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:24:33,224 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:33,224 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:33,224 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:33,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:33,225 INFO L82 PathProgramCache]: Analyzing trace with hash 672248787, now seen corresponding path program 1 times [2020-04-18 02:24:33,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:33,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555536514] [2020-04-18 02:24:33,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:33,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555536514] [2020-04-18 02:24:33,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:33,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:33,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792465819] [2020-04-18 02:24:33,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:33,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:33,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:33,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:33,297 INFO L87 Difference]: Start difference. First operand 618 states and 2058 transitions. Second operand 4 states. [2020-04-18 02:24:33,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:33,331 INFO L93 Difference]: Finished difference Result 658 states and 2130 transitions. [2020-04-18 02:24:33,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:33,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 02:24:33,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:33,336 INFO L225 Difference]: With dead ends: 658 [2020-04-18 02:24:33,336 INFO L226 Difference]: Without dead ends: 578 [2020-04-18 02:24:33,337 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:33,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-04-18 02:24:33,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2020-04-18 02:24:33,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-04-18 02:24:33,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1906 transitions. [2020-04-18 02:24:33,378 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1906 transitions. Word has length 13 [2020-04-18 02:24:33,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:33,378 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 1906 transitions. [2020-04-18 02:24:33,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:33,379 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1906 transitions. [2020-04-18 02:24:33,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:24:33,380 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:33,380 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:33,381 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:33,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:33,381 INFO L82 PathProgramCache]: Analyzing trace with hash -488944074, now seen corresponding path program 1 times [2020-04-18 02:24:33,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:33,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338225929] [2020-04-18 02:24:33,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:33,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:33,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338225929] [2020-04-18 02:24:33,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:33,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:24:33,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898130325] [2020-04-18 02:24:33,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:33,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:33,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:33,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:33,450 INFO L87 Difference]: Start difference. First operand 578 states and 1906 transitions. Second operand 4 states. [2020-04-18 02:24:33,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:33,489 INFO L93 Difference]: Finished difference Result 854 states and 2662 transitions. [2020-04-18 02:24:33,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:33,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-18 02:24:33,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:33,495 INFO L225 Difference]: With dead ends: 854 [2020-04-18 02:24:33,495 INFO L226 Difference]: Without dead ends: 618 [2020-04-18 02:24:33,496 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:33,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-04-18 02:24:33,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 538. [2020-04-18 02:24:33,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-04-18 02:24:33,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1686 transitions. [2020-04-18 02:24:33,517 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1686 transitions. Word has length 14 [2020-04-18 02:24:33,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:33,517 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 1686 transitions. [2020-04-18 02:24:33,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:33,517 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1686 transitions. [2020-04-18 02:24:33,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:24:33,519 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:33,519 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:33,519 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:33,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:33,520 INFO L82 PathProgramCache]: Analyzing trace with hash -311989916, now seen corresponding path program 1 times [2020-04-18 02:24:33,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:33,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528292928] [2020-04-18 02:24:33,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:33,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:33,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528292928] [2020-04-18 02:24:33,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:33,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:24:33,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126231969] [2020-04-18 02:24:33,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:24:33,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:33,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:24:33,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:33,606 INFO L87 Difference]: Start difference. First operand 538 states and 1686 transitions. Second operand 5 states. [2020-04-18 02:24:33,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:33,655 INFO L93 Difference]: Finished difference Result 814 states and 2512 transitions. [2020-04-18 02:24:33,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:33,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 02:24:33,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:33,660 INFO L225 Difference]: With dead ends: 814 [2020-04-18 02:24:33,660 INFO L226 Difference]: Without dead ends: 442 [2020-04-18 02:24:33,661 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:24:33,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-04-18 02:24:33,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2020-04-18 02:24:33,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-04-18 02:24:33,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1364 transitions. [2020-04-18 02:24:33,677 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1364 transitions. Word has length 14 [2020-04-18 02:24:33,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:33,677 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 1364 transitions. [2020-04-18 02:24:33,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:24:33,677 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1364 transitions. [2020-04-18 02:24:33,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:24:33,679 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:33,679 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:33,679 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:33,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:33,680 INFO L82 PathProgramCache]: Analyzing trace with hash -666682042, now seen corresponding path program 2 times [2020-04-18 02:24:33,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:33,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071263687] [2020-04-18 02:24:33,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:33,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071263687] [2020-04-18 02:24:33,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:33,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:24:33,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067962398] [2020-04-18 02:24:33,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:33,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:33,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:33,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:33,727 INFO L87 Difference]: Start difference. First operand 442 states and 1364 transitions. Second operand 4 states. [2020-04-18 02:24:33,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:33,751 INFO L93 Difference]: Finished difference Result 466 states and 1404 transitions. [2020-04-18 02:24:33,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:33,751 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-18 02:24:33,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:33,755 INFO L225 Difference]: With dead ends: 466 [2020-04-18 02:24:33,755 INFO L226 Difference]: Without dead ends: 418 [2020-04-18 02:24:33,755 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:33,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-04-18 02:24:33,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2020-04-18 02:24:33,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-04-18 02:24:33,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1276 transitions. [2020-04-18 02:24:33,771 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1276 transitions. Word has length 14 [2020-04-18 02:24:33,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:33,772 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 1276 transitions. [2020-04-18 02:24:33,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:33,772 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1276 transitions. [2020-04-18 02:24:33,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:24:33,773 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:33,773 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:33,773 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:33,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:33,774 INFO L82 PathProgramCache]: Analyzing trace with hash -432648259, now seen corresponding path program 1 times [2020-04-18 02:24:33,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:33,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628533667] [2020-04-18 02:24:33,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:33,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:33,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628533667] [2020-04-18 02:24:33,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:33,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:24:33,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784238088] [2020-04-18 02:24:33,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:33,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:33,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:33,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:33,838 INFO L87 Difference]: Start difference. First operand 418 states and 1276 transitions. Second operand 4 states. [2020-04-18 02:24:33,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:33,879 INFO L93 Difference]: Finished difference Result 598 states and 1752 transitions. [2020-04-18 02:24:33,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:33,880 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-18 02:24:33,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:33,883 INFO L225 Difference]: With dead ends: 598 [2020-04-18 02:24:33,884 INFO L226 Difference]: Without dead ends: 442 [2020-04-18 02:24:33,885 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:33,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-04-18 02:24:33,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 394. [2020-04-18 02:24:33,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-04-18 02:24:33,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1140 transitions. [2020-04-18 02:24:33,905 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1140 transitions. Word has length 15 [2020-04-18 02:24:33,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:33,906 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 1140 transitions. [2020-04-18 02:24:33,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:33,915 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1140 transitions. [2020-04-18 02:24:33,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:24:33,918 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:33,918 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:33,918 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:33,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:33,919 INFO L82 PathProgramCache]: Analyzing trace with hash -96752386, now seen corresponding path program 1 times [2020-04-18 02:24:33,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:33,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169091262] [2020-04-18 02:24:33,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:34,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:34,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169091262] [2020-04-18 02:24:34,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:34,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:24:34,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023451370] [2020-04-18 02:24:34,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:24:34,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:34,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:24:34,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:34,010 INFO L87 Difference]: Start difference. First operand 394 states and 1140 transitions. Second operand 5 states. [2020-04-18 02:24:34,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:34,054 INFO L93 Difference]: Finished difference Result 542 states and 1518 transitions. [2020-04-18 02:24:34,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:34,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-18 02:24:34,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:34,057 INFO L225 Difference]: With dead ends: 542 [2020-04-18 02:24:34,057 INFO L226 Difference]: Without dead ends: 254 [2020-04-18 02:24:34,057 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:24:34,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-04-18 02:24:34,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-04-18 02:24:34,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-04-18 02:24:34,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 691 transitions. [2020-04-18 02:24:34,067 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 691 transitions. Word has length 15 [2020-04-18 02:24:34,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:34,068 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 691 transitions. [2020-04-18 02:24:34,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:24:34,069 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 691 transitions. [2020-04-18 02:24:34,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:24:34,070 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:34,070 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:34,070 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:34,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:34,070 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 2 times [2020-04-18 02:24:34,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:34,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763096477] [2020-04-18 02:24:34,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:34,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:34,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763096477] [2020-04-18 02:24:34,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:34,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:24:34,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883511587] [2020-04-18 02:24:34,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:24:34,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:34,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:24:34,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:24:34,135 INFO L87 Difference]: Start difference. First operand 254 states and 691 transitions. Second operand 4 states. [2020-04-18 02:24:34,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:34,175 INFO L93 Difference]: Finished difference Result 302 states and 756 transitions. [2020-04-18 02:24:34,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:24:34,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-18 02:24:34,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:34,177 INFO L225 Difference]: With dead ends: 302 [2020-04-18 02:24:34,177 INFO L226 Difference]: Without dead ends: 229 [2020-04-18 02:24:34,178 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:34,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-04-18 02:24:34,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2020-04-18 02:24:34,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-04-18 02:24:34,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 581 transitions. [2020-04-18 02:24:34,188 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 581 transitions. Word has length 15 [2020-04-18 02:24:34,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:34,190 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 581 transitions. [2020-04-18 02:24:34,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:24:34,190 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 581 transitions. [2020-04-18 02:24:34,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 02:24:34,191 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:34,191 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:34,191 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:34,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:34,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-04-18 02:24:34,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:34,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571663750] [2020-04-18 02:24:34,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:34,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:34,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571663750] [2020-04-18 02:24:34,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:34,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:24:34,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400053145] [2020-04-18 02:24:34,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:24:34,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:34,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:24:34,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:34,267 INFO L87 Difference]: Start difference. First operand 229 states and 581 transitions. Second operand 5 states. [2020-04-18 02:24:34,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:34,324 INFO L93 Difference]: Finished difference Result 227 states and 514 transitions. [2020-04-18 02:24:34,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:24:34,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-04-18 02:24:34,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:34,326 INFO L225 Difference]: With dead ends: 227 [2020-04-18 02:24:34,326 INFO L226 Difference]: Without dead ends: 171 [2020-04-18 02:24:34,326 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:24:34,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-04-18 02:24:34,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-04-18 02:24:34,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-04-18 02:24:34,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 378 transitions. [2020-04-18 02:24:34,332 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 378 transitions. Word has length 16 [2020-04-18 02:24:34,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:34,332 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 378 transitions. [2020-04-18 02:24:34,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:24:34,333 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 378 transitions. [2020-04-18 02:24:34,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:24:34,333 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:34,334 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:34,334 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:34,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:34,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-04-18 02:24:34,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:34,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115058358] [2020-04-18 02:24:34,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:34,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115058358] [2020-04-18 02:24:34,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:34,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 02:24:34,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077398842] [2020-04-18 02:24:34,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:24:34,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:34,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:24:34,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:24:34,380 INFO L87 Difference]: Start difference. First operand 171 states and 378 transitions. Second operand 6 states. [2020-04-18 02:24:34,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:34,436 INFO L93 Difference]: Finished difference Result 147 states and 307 transitions. [2020-04-18 02:24:34,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:24:34,437 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-04-18 02:24:34,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:34,438 INFO L225 Difference]: With dead ends: 147 [2020-04-18 02:24:34,438 INFO L226 Difference]: Without dead ends: 107 [2020-04-18 02:24:34,439 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:24:34,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-04-18 02:24:34,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-04-18 02:24:34,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-04-18 02:24:34,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 217 transitions. [2020-04-18 02:24:34,442 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 217 transitions. Word has length 17 [2020-04-18 02:24:34,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:34,442 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 217 transitions. [2020-04-18 02:24:34,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:24:34,443 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 217 transitions. [2020-04-18 02:24:34,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 02:24:34,443 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:34,443 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:34,444 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:34,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:34,444 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-04-18 02:24:34,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:34,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133964620] [2020-04-18 02:24:34,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:34,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:34,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133964620] [2020-04-18 02:24:34,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:34,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:24:34,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367503440] [2020-04-18 02:24:34,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:24:34,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:34,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:24:34,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:24:34,489 INFO L87 Difference]: Start difference. First operand 107 states and 217 transitions. Second operand 5 states. [2020-04-18 02:24:34,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:34,522 INFO L93 Difference]: Finished difference Result 121 states and 234 transitions. [2020-04-18 02:24:34,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:24:34,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-04-18 02:24:34,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:34,524 INFO L225 Difference]: With dead ends: 121 [2020-04-18 02:24:34,524 INFO L226 Difference]: Without dead ends: 105 [2020-04-18 02:24:34,524 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:24:34,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-04-18 02:24:34,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-04-18 02:24:34,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-04-18 02:24:34,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 205 transitions. [2020-04-18 02:24:34,528 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 205 transitions. Word has length 19 [2020-04-18 02:24:34,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:34,528 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 205 transitions. [2020-04-18 02:24:34,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:24:34,528 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 205 transitions. [2020-04-18 02:24:34,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 02:24:34,529 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:24:34,529 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:24:34,529 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:24:34,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:24:34,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-04-18 02:24:34,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:24:34,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096217254] [2020-04-18 02:24:34,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:24:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:24:34,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:24:34,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096217254] [2020-04-18 02:24:34,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:24:34,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 02:24:34,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887650358] [2020-04-18 02:24:34,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 02:24:34,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:24:34,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 02:24:34,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:24:34,583 INFO L87 Difference]: Start difference. First operand 103 states and 205 transitions. Second operand 7 states. [2020-04-18 02:24:34,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:24:34,631 INFO L93 Difference]: Finished difference Result 93 states and 190 transitions. [2020-04-18 02:24:34,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:24:34,631 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-04-18 02:24:34,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:24:34,632 INFO L225 Difference]: With dead ends: 93 [2020-04-18 02:24:34,632 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:24:34,632 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:24:34,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:24:34,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:24:34,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:24:34,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:24:34,633 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-04-18 02:24:34,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:24:34,633 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:24:34,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 02:24:34,634 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:24:34,634 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:24:34,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:24:34 BasicIcfg [2020-04-18 02:24:34,638 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:24:34,640 INFO L168 Benchmark]: Toolchain (without parser) took 5748.16 ms. Allocated memory was 146.3 MB in the beginning and 285.2 MB in the end (delta: 138.9 MB). Free memory was 102.7 MB in the beginning and 186.6 MB in the end (delta: -83.9 MB). Peak memory consumption was 55.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:34,641 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 146.3 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:24:34,642 INFO L168 Benchmark]: CACSL2BoogieTranslator took 782.10 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 100.9 MB in the beginning and 159.7 MB in the end (delta: -58.8 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:34,642 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.82 ms. Allocated memory is still 203.4 MB. Free memory was 159.7 MB in the beginning and 157.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:34,643 INFO L168 Benchmark]: Boogie Preprocessor took 44.04 ms. Allocated memory is still 203.4 MB. Free memory was 157.8 MB in the beginning and 155.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:34,644 INFO L168 Benchmark]: RCFGBuilder took 513.50 ms. Allocated memory is still 203.4 MB. Free memory was 155.9 MB in the beginning and 132.6 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:34,644 INFO L168 Benchmark]: TraceAbstraction took 4325.15 ms. Allocated memory was 203.4 MB in the beginning and 285.2 MB in the end (delta: 81.8 MB). Free memory was 131.7 MB in the beginning and 186.6 MB in the end (delta: -55.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2020-04-18 02:24:34,648 INFO L336 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 146.3 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 782.10 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 100.9 MB in the beginning and 159.7 MB in the end (delta: -58.8 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.82 ms. Allocated memory is still 203.4 MB. Free memory was 159.7 MB in the beginning and 157.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.04 ms. Allocated memory is still 203.4 MB. Free memory was 157.8 MB in the beginning and 155.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 513.50 ms. Allocated memory is still 203.4 MB. Free memory was 155.9 MB in the beginning and 132.6 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4325.15 ms. Allocated memory was 203.4 MB in the beginning and 285.2 MB in the end (delta: 81.8 MB). Free memory was 131.7 MB in the beginning and 186.6 MB in the end (delta: -55.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 91 ProgramPointsBefore, 39 ProgramPointsAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 927 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2895 CheckedPairsTotal, 62 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 375 SDtfs, 328 SDslu, 598 SDs, 0 SdLazy, 227 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 130 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 190 ConstructedInterpolants, 0 QuantifiedInterpolants, 7768 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 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 proved your program to be correct! Received shutdown request...