/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-array-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 20:15:49,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 20:15:49,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 20:15:49,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 20:15:49,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 20:15:49,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 20:15:49,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 20:15:49,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 20:15:49,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 20:15:49,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 20:15:49,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 20:15:49,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 20:15:49,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 20:15:49,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 20:15:49,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 20:15:49,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 20:15:49,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 20:15:49,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 20:15:49,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 20:15:49,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 20:15:49,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 20:15:49,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 20:15:49,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 20:15:49,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 20:15:49,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-11 20:15:49,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 20:15:49,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 20:15:49,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 20:15:49,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 20:15:49,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 20:15:49,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 20:15:49,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 20:15:49,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 20:15:49,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 20:15:49,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 20:15:49,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 20:15:49,744 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-09-11 20:15:49,804 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 20:15:49,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 20:15:49,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 20:15:49,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 20:15:49,808 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 20:15:49,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 20:15:49,809 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 20:15:49,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 20:15:49,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 20:15:49,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 20:15:49,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 20:15:49,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 20:15:49,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 20:15:49,810 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 20:15:49,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 20:15:49,811 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 20:15:49,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 20:15:49,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 20:15:49,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 20:15:49,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 20:15:49,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 20:15:49,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 20:15:49,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 20:15:49,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 20:15:49,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 20:15:49,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 20:15:49,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 20:15:49,814 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 20:15:49,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 20:15:50,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 20:15:50,272 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 20:15:50,276 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 20:15:50,278 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 20:15:50,278 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 20:15:50,280 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2020-09-11 20:15:50,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2501c38ea/8231a0733db8432ea6a74fdfe82c9233/FLAGd3383bcec [2020-09-11 20:15:51,028 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 20:15:51,029 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2020-09-11 20:15:51,051 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2501c38ea/8231a0733db8432ea6a74fdfe82c9233/FLAGd3383bcec [2020-09-11 20:15:51,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2501c38ea/8231a0733db8432ea6a74fdfe82c9233 [2020-09-11 20:15:51,324 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 20:15:51,330 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 20:15:51,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 20:15:51,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 20:15:51,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 20:15:51,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:15:51" (1/1) ... [2020-09-11 20:15:51,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f6490b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:51, skipping insertion in model container [2020-09-11 20:15:51,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:15:51" (1/1) ... [2020-09-11 20:15:51,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 20:15:51,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 20:15:51,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 20:15:51,975 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 20:15:52,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 20:15:52,125 INFO L208 MainTranslator]: Completed translation [2020-09-11 20:15:52,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:52 WrapperNode [2020-09-11 20:15:52,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 20:15:52,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 20:15:52,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 20:15:52,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 20:15:52,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:52" (1/1) ... [2020-09-11 20:15:52,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:52" (1/1) ... [2020-09-11 20:15:52,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 20:15:52,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 20:15:52,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 20:15:52,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 20:15:52,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:52" (1/1) ... [2020-09-11 20:15:52,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:52" (1/1) ... [2020-09-11 20:15:52,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:52" (1/1) ... [2020-09-11 20:15:52,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:52" (1/1) ... [2020-09-11 20:15:52,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:52" (1/1) ... [2020-09-11 20:15:52,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:52" (1/1) ... [2020-09-11 20:15:52,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:52" (1/1) ... [2020-09-11 20:15:52,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 20:15:52,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 20:15:52,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 20:15:52,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 20:15:52,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 20:15:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-09-11 20:15:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-11 20:15:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 20:15:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2020-09-11 20:15:52,319 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2020-09-11 20:15:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 20:15:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 20:15:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 20:15:52,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 20:15:52,324 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 20:15:52,747 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 20:15:52,747 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-09-11 20:15:52,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:15:52 BoogieIcfgContainer [2020-09-11 20:15:52,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 20:15:52,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 20:15:52,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 20:15:52,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 20:15:52,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 08:15:51" (1/3) ... [2020-09-11 20:15:52,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a4f7ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:15:52, skipping insertion in model container [2020-09-11 20:15:52,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:15:52" (2/3) ... [2020-09-11 20:15:52,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a4f7ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:15:52, skipping insertion in model container [2020-09-11 20:15:52,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:15:52" (3/3) ... [2020-09-11 20:15:52,763 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-array-1.i [2020-09-11 20:15:52,775 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 20:15:52,776 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 20:15:52,786 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 20:15:52,788 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 20:15:52,818 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:52,818 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:52,819 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:52,819 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:52,819 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:52,820 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:52,820 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:52,825 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:52,825 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:52,826 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:52,826 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:52,826 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:52,862 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-11 20:15:52,892 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 20:15:52,892 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 20:15:52,892 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 20:15:52,892 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 20:15:52,892 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 20:15:52,893 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 20:15:52,893 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 20:15:52,893 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 20:15:52,909 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 71 transitions, 150 flow [2020-09-11 20:15:52,911 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 71 transitions, 150 flow [2020-09-11 20:15:52,979 INFO L129 PetriNetUnfolder]: 12/103 cut-off events. [2020-09-11 20:15:52,979 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-09-11 20:15:52,985 INFO L80 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 103 events. 12/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 206 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2020-09-11 20:15:52,988 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 71 transitions, 150 flow [2020-09-11 20:15:53,021 INFO L129 PetriNetUnfolder]: 12/103 cut-off events. [2020-09-11 20:15:53,021 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-09-11 20:15:53,022 INFO L80 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 103 events. 12/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 206 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2020-09-11 20:15:53,024 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 370 [2020-09-11 20:15:53,025 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 20:15:54,502 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-09-11 20:15:54,765 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-09-11 20:15:54,957 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-09-11 20:15:55,060 INFO L206 etLargeBlockEncoding]: Checked pairs total: 264 [2020-09-11 20:15:55,060 INFO L214 etLargeBlockEncoding]: Total number of compositions: 66 [2020-09-11 20:15:55,066 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 14 transitions, 36 flow [2020-09-11 20:15:55,081 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 27 states. [2020-09-11 20:15:55,083 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-11 20:15:55,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-11 20:15:55,092 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:15:55,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-11 20:15:55,093 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:15:55,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:15:55,100 INFO L82 PathProgramCache]: Analyzing trace with hash 8680406, now seen corresponding path program 1 times [2020-09-11 20:15:55,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:15:55,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368350250] [2020-09-11 20:15:55,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:15:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:15:55,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:15:55,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368350250] [2020-09-11 20:15:55,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:15:55,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 20:15:55,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201595737] [2020-09-11 20:15:55,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:15:55,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:15:55,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:15:55,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:15:55,349 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-09-11 20:15:55,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:15:55,408 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-09-11 20:15:55,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:15:55,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-11 20:15:55,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:15:55,429 INFO L225 Difference]: With dead ends: 27 [2020-09-11 20:15:55,429 INFO L226 Difference]: Without dead ends: 23 [2020-09-11 20:15:55,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:15:55,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-11 20:15:55,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-11 20:15:55,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-11 20:15:55,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2020-09-11 20:15:55,478 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 4 [2020-09-11 20:15:55,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:15:55,478 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2020-09-11 20:15:55,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:15:55,479 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2020-09-11 20:15:55,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-09-11 20:15:55,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:15:55,480 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-09-11 20:15:55,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 20:15:55,480 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:15:55,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:15:55,481 INFO L82 PathProgramCache]: Analyzing trace with hash -256835414, now seen corresponding path program 1 times [2020-09-11 20:15:55,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:15:55,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994718442] [2020-09-11 20:15:55,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:15:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:15:55,529 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:15:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:15:55,565 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:15:55,599 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 20:15:55,599 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 20:15:55,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 20:15:55,601 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-11 20:15:55,603 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 20:15:55,603 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-09-11 20:15:55,610 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:55,610 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:55,610 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:55,610 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:55,611 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:55,611 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:55,611 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:55,612 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:55,612 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:55,612 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:55,612 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:55,613 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:55,613 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:55,613 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:55,614 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:55,614 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:55,614 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:55,614 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:55,615 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:55,616 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:55,617 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:55,617 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:55,617 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:55,617 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:55,621 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-11 20:15:55,621 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 20:15:55,622 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 20:15:55,622 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 20:15:55,622 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 20:15:55,622 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 20:15:55,622 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 20:15:55,622 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 20:15:55,623 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 20:15:55,625 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 78 transitions, 174 flow [2020-09-11 20:15:55,625 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 78 transitions, 174 flow [2020-09-11 20:15:55,663 INFO L129 PetriNetUnfolder]: 23/183 cut-off events. [2020-09-11 20:15:55,663 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-09-11 20:15:55,664 INFO L80 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 183 events. 23/183 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 456 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 105. Up to 8 conditions per place. [2020-09-11 20:15:55,670 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 78 transitions, 174 flow [2020-09-11 20:15:55,727 INFO L129 PetriNetUnfolder]: 23/183 cut-off events. [2020-09-11 20:15:55,727 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-09-11 20:15:55,728 INFO L80 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 183 events. 23/183 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 456 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 105. Up to 8 conditions per place. [2020-09-11 20:15:55,732 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 900 [2020-09-11 20:15:55,733 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 20:15:57,055 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-09-11 20:15:57,382 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-09-11 20:15:57,493 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-09-11 20:15:57,671 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2020-09-11 20:15:57,765 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1723 [2020-09-11 20:15:57,765 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-09-11 20:15:57,765 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 23 transitions, 64 flow [2020-09-11 20:15:57,778 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 242 states. [2020-09-11 20:15:57,779 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-09-11 20:15:57,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-11 20:15:57,779 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:15:57,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-11 20:15:57,780 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:15:57,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:15:57,780 INFO L82 PathProgramCache]: Analyzing trace with hash 13452069, now seen corresponding path program 1 times [2020-09-11 20:15:57,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:15:57,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019927114] [2020-09-11 20:15:57,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:15:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:15:57,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:15:57,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019927114] [2020-09-11 20:15:57,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:15:57,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 20:15:57,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563611371] [2020-09-11 20:15:57,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:15:57,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:15:57,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:15:57,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:15:57,843 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 3 states. [2020-09-11 20:15:57,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:15:57,881 INFO L93 Difference]: Finished difference Result 242 states and 550 transitions. [2020-09-11 20:15:57,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:15:57,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-11 20:15:57,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:15:57,889 INFO L225 Difference]: With dead ends: 242 [2020-09-11 20:15:57,889 INFO L226 Difference]: Without dead ends: 216 [2020-09-11 20:15:57,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:15:57,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-09-11 20:15:57,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-09-11 20:15:57,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-09-11 20:15:57,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 494 transitions. [2020-09-11 20:15:57,923 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 494 transitions. Word has length 4 [2020-09-11 20:15:57,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:15:57,923 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 494 transitions. [2020-09-11 20:15:57,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:15:57,924 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 494 transitions. [2020-09-11 20:15:57,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 20:15:57,925 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:15:57,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:15:57,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 20:15:57,925 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:15:57,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:15:57,926 INFO L82 PathProgramCache]: Analyzing trace with hash 76722491, now seen corresponding path program 1 times [2020-09-11 20:15:57,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:15:57,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223100596] [2020-09-11 20:15:57,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:15:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:15:57,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:15:57,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223100596] [2020-09-11 20:15:57,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181320966] [2020-09-11 20:15:57,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:15:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:15:58,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-11 20:15:58,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:15:58,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:15:58,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:15:58,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-09-11 20:15:58,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569209790] [2020-09-11 20:15:58,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 20:15:58,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:15:58,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 20:15:58,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-09-11 20:15:58,120 INFO L87 Difference]: Start difference. First operand 216 states and 494 transitions. Second operand 6 states. [2020-09-11 20:15:58,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:15:58,183 INFO L93 Difference]: Finished difference Result 216 states and 490 transitions. [2020-09-11 20:15:58,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 20:15:58,184 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-09-11 20:15:58,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:15:58,188 INFO L225 Difference]: With dead ends: 216 [2020-09-11 20:15:58,188 INFO L226 Difference]: Without dead ends: 216 [2020-09-11 20:15:58,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-09-11 20:15:58,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-09-11 20:15:58,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-09-11 20:15:58,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-09-11 20:15:58,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 490 transitions. [2020-09-11 20:15:58,213 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 490 transitions. Word has length 8 [2020-09-11 20:15:58,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:15:58,213 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 490 transitions. [2020-09-11 20:15:58,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 20:15:58,213 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 490 transitions. [2020-09-11 20:15:58,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 20:15:58,215 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:15:58,215 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2020-09-11 20:15:58,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:15:58,429 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:15:58,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:15:58,430 INFO L82 PathProgramCache]: Analyzing trace with hash 94633273, now seen corresponding path program 1 times [2020-09-11 20:15:58,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:15:58,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745706669] [2020-09-11 20:15:58,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:15:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:15:58,466 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:15:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:15:58,503 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:15:58,519 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 20:15:58,520 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 20:15:58,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 20:15:58,520 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-11 20:15:58,521 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 20:15:58,524 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-09-11 20:15:58,531 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,531 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,532 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,532 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,532 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,533 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,533 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,533 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,533 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,534 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,534 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,534 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,534 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,534 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,534 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,535 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,535 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,535 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,535 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,535 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,535 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,536 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,536 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,536 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,537 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,537 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,538 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,538 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,538 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,538 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,539 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,541 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,541 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,541 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,542 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,542 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:15:58,546 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-11 20:15:58,546 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 20:15:58,546 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 20:15:58,546 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 20:15:58,547 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 20:15:58,547 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 20:15:58,547 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 20:15:58,547 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 20:15:58,547 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 20:15:58,549 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 85 transitions, 200 flow [2020-09-11 20:15:58,549 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 85 transitions, 200 flow [2020-09-11 20:15:58,597 INFO L129 PetriNetUnfolder]: 45/330 cut-off events. [2020-09-11 20:15:58,598 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-09-11 20:15:58,599 INFO L80 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 330 events. 45/330 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1086 event pairs, 1 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 191. Up to 16 conditions per place. [2020-09-11 20:15:58,604 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 85 transitions, 200 flow [2020-09-11 20:15:58,651 INFO L129 PetriNetUnfolder]: 45/330 cut-off events. [2020-09-11 20:15:58,651 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-09-11 20:15:58,652 INFO L80 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 330 events. 45/330 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1086 event pairs, 1 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 191. Up to 16 conditions per place. [2020-09-11 20:15:58,658 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1470 [2020-09-11 20:15:58,658 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 20:16:00,106 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-11 20:16:00,214 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3028 [2020-09-11 20:16:00,214 INFO L214 etLargeBlockEncoding]: Total number of compositions: 68 [2020-09-11 20:16:00,214 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 28 transitions, 86 flow [2020-09-11 20:16:00,269 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1150 states. [2020-09-11 20:16:00,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states. [2020-09-11 20:16:00,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-11 20:16:00,270 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:00,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-11 20:16:00,270 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:16:00,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:00,271 INFO L82 PathProgramCache]: Analyzing trace with hash 18528206, now seen corresponding path program 1 times [2020-09-11 20:16:00,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:00,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301110933] [2020-09-11 20:16:00,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:00,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:00,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301110933] [2020-09-11 20:16:00,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:00,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 20:16:00,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523724897] [2020-09-11 20:16:00,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:16:00,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:00,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:16:00,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:16:00,324 INFO L87 Difference]: Start difference. First operand 1150 states. Second operand 3 states. [2020-09-11 20:16:00,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:00,386 INFO L93 Difference]: Finished difference Result 1150 states and 3360 transitions. [2020-09-11 20:16:00,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:16:00,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-11 20:16:00,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:00,403 INFO L225 Difference]: With dead ends: 1150 [2020-09-11 20:16:00,404 INFO L226 Difference]: Without dead ends: 1024 [2020-09-11 20:16:00,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:16:00,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-09-11 20:16:00,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2020-09-11 20:16:00,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-09-11 20:16:00,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3009 transitions. [2020-09-11 20:16:00,473 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 3009 transitions. Word has length 4 [2020-09-11 20:16:00,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:00,473 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 3009 transitions. [2020-09-11 20:16:00,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:16:00,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 3009 transitions. [2020-09-11 20:16:00,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 20:16:00,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:00,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:00,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 20:16:00,475 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:16:00,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:00,476 INFO L82 PathProgramCache]: Analyzing trace with hash 949696130, now seen corresponding path program 1 times [2020-09-11 20:16:00,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:00,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771078690] [2020-09-11 20:16:00,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:00,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:00,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771078690] [2020-09-11 20:16:00,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965536343] [2020-09-11 20:16:00,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:00,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-11 20:16:00,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:16:00,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:00,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:16:00,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-09-11 20:16:00,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754229177] [2020-09-11 20:16:00,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 20:16:00,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:00,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 20:16:00,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-11 20:16:00,652 INFO L87 Difference]: Start difference. First operand 1024 states and 3009 transitions. Second operand 6 states. [2020-09-11 20:16:00,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:00,696 INFO L93 Difference]: Finished difference Result 1024 states and 3005 transitions. [2020-09-11 20:16:00,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 20:16:00,697 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-09-11 20:16:00,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:00,705 INFO L225 Difference]: With dead ends: 1024 [2020-09-11 20:16:00,705 INFO L226 Difference]: Without dead ends: 1024 [2020-09-11 20:16:00,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-11 20:16:00,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-09-11 20:16:00,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2020-09-11 20:16:00,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-09-11 20:16:00,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3005 transitions. [2020-09-11 20:16:00,741 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 3005 transitions. Word has length 8 [2020-09-11 20:16:00,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:00,742 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 3005 transitions. [2020-09-11 20:16:00,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 20:16:00,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 3005 transitions. [2020-09-11 20:16:00,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 20:16:00,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:00,744 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:00,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:00,959 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:16:00,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:00,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1421208619, now seen corresponding path program 1 times [2020-09-11 20:16:00,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:00,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927181124] [2020-09-11 20:16:00,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:01,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 20:16:01,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927181124] [2020-09-11 20:16:01,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:01,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:16:01,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12773192] [2020-09-11 20:16:01,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 20:16:01,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:01,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 20:16:01,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-11 20:16:01,014 INFO L87 Difference]: Start difference. First operand 1024 states and 3005 transitions. Second operand 4 states. [2020-09-11 20:16:01,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:01,063 INFO L93 Difference]: Finished difference Result 1005 states and 2767 transitions. [2020-09-11 20:16:01,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 20:16:01,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-11 20:16:01,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:01,071 INFO L225 Difference]: With dead ends: 1005 [2020-09-11 20:16:01,071 INFO L226 Difference]: Without dead ends: 1005 [2020-09-11 20:16:01,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-11 20:16:01,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2020-09-11 20:16:01,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 973. [2020-09-11 20:16:01,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2020-09-11 20:16:01,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 2707 transitions. [2020-09-11 20:16:01,105 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 2707 transitions. Word has length 12 [2020-09-11 20:16:01,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:01,107 INFO L479 AbstractCegarLoop]: Abstraction has 973 states and 2707 transitions. [2020-09-11 20:16:01,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 20:16:01,107 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 2707 transitions. [2020-09-11 20:16:01,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 20:16:01,116 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:01,116 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2020-09-11 20:16:01,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 20:16:01,117 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:16:01,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:01,117 INFO L82 PathProgramCache]: Analyzing trace with hash -515475845, now seen corresponding path program 1 times [2020-09-11 20:16:01,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:01,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369225041] [2020-09-11 20:16:01,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:16:01,157 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:16:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:16:01,183 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:16:01,189 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 20:16:01,190 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 20:16:01,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 20:16:01,190 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-11 20:16:01,191 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 20:16:01,191 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-09-11 20:16:01,198 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,198 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,198 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,199 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,199 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,199 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,199 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,199 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,200 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,200 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,200 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,200 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,200 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,200 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,201 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,201 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,201 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,201 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,201 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,201 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,201 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,202 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,202 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,202 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,202 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,202 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,202 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,203 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,203 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,203 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,203 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,204 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,204 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,205 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,205 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,206 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,206 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,206 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,207 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,207 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,207 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,208 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,208 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,209 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,209 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,209 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,210 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,210 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:01,213 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-11 20:16:01,214 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 20:16:01,214 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 20:16:01,214 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 20:16:01,214 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 20:16:01,214 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 20:16:01,214 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 20:16:01,214 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 20:16:01,215 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 20:16:01,216 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 92 transitions, 228 flow [2020-09-11 20:16:01,216 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 92 transitions, 228 flow [2020-09-11 20:16:01,284 INFO L129 PetriNetUnfolder]: 91/613 cut-off events. [2020-09-11 20:16:01,284 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-09-11 20:16:01,287 INFO L80 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 613 events. 91/613 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2732 event pairs, 6 based on Foata normal form. 0/506 useless extension candidates. Maximal degree in co-relation 350. Up to 32 conditions per place. [2020-09-11 20:16:01,301 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 92 transitions, 228 flow [2020-09-11 20:16:01,386 INFO L129 PetriNetUnfolder]: 91/613 cut-off events. [2020-09-11 20:16:01,386 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-09-11 20:16:01,388 INFO L80 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 613 events. 91/613 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2732 event pairs, 6 based on Foata normal form. 0/506 useless extension candidates. Maximal degree in co-relation 350. Up to 32 conditions per place. [2020-09-11 20:16:01,398 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2120 [2020-09-11 20:16:01,398 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 20:16:02,497 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-09-11 20:16:02,957 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-11 20:16:03,079 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4448 [2020-09-11 20:16:03,080 INFO L214 etLargeBlockEncoding]: Total number of compositions: 68 [2020-09-11 20:16:03,081 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 33 transitions, 110 flow [2020-09-11 20:16:03,439 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5482 states. [2020-09-11 20:16:03,439 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states. [2020-09-11 20:16:03,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-11 20:16:03,440 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:03,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-11 20:16:03,440 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:16:03,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:03,441 INFO L82 PathProgramCache]: Analyzing trace with hash 23824947, now seen corresponding path program 1 times [2020-09-11 20:16:03,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:03,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607968501] [2020-09-11 20:16:03,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:03,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:03,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607968501] [2020-09-11 20:16:03,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:03,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 20:16:03,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720569655] [2020-09-11 20:16:03,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:16:03,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:03,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:16:03,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:16:03,493 INFO L87 Difference]: Start difference. First operand 5482 states. Second operand 3 states. [2020-09-11 20:16:03,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:03,598 INFO L93 Difference]: Finished difference Result 5482 states and 19554 transitions. [2020-09-11 20:16:03,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:16:03,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-11 20:16:03,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:03,647 INFO L225 Difference]: With dead ends: 5482 [2020-09-11 20:16:03,647 INFO L226 Difference]: Without dead ends: 4856 [2020-09-11 20:16:03,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:16:03,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2020-09-11 20:16:03,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2020-09-11 20:16:03,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2020-09-11 20:16:03,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17428 transitions. [2020-09-11 20:16:03,862 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17428 transitions. Word has length 4 [2020-09-11 20:16:03,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:03,862 INFO L479 AbstractCegarLoop]: Abstraction has 4856 states and 17428 transitions. [2020-09-11 20:16:03,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:16:03,862 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17428 transitions. [2020-09-11 20:16:03,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 20:16:03,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:03,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:03,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-11 20:16:03,864 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:16:03,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:03,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1205655351, now seen corresponding path program 1 times [2020-09-11 20:16:03,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:03,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513826491] [2020-09-11 20:16:03,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:03,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:03,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513826491] [2020-09-11 20:16:03,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032970716] [2020-09-11 20:16:03,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:04,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-11 20:16:04,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:16:04,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:04,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:16:04,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-09-11 20:16:04,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260870639] [2020-09-11 20:16:04,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 20:16:04,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:04,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 20:16:04,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-09-11 20:16:04,074 INFO L87 Difference]: Start difference. First operand 4856 states and 17428 transitions. Second operand 6 states. [2020-09-11 20:16:04,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:04,174 INFO L93 Difference]: Finished difference Result 4856 states and 17424 transitions. [2020-09-11 20:16:04,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 20:16:04,175 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-09-11 20:16:04,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:04,220 INFO L225 Difference]: With dead ends: 4856 [2020-09-11 20:16:04,220 INFO L226 Difference]: Without dead ends: 4856 [2020-09-11 20:16:04,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-09-11 20:16:04,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2020-09-11 20:16:04,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2020-09-11 20:16:04,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2020-09-11 20:16:04,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17424 transitions. [2020-09-11 20:16:04,412 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17424 transitions. Word has length 8 [2020-09-11 20:16:04,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:04,413 INFO L479 AbstractCegarLoop]: Abstraction has 4856 states and 17424 transitions. [2020-09-11 20:16:04,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 20:16:04,413 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17424 transitions. [2020-09-11 20:16:04,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 20:16:04,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:04,414 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:04,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-09-11 20:16:04,628 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:16:04,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:04,628 INFO L82 PathProgramCache]: Analyzing trace with hash -137206530, now seen corresponding path program 1 times [2020-09-11 20:16:04,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:04,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359944486] [2020-09-11 20:16:04,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:04,674 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 20:16:04,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359944486] [2020-09-11 20:16:04,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:04,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:16:04,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414506290] [2020-09-11 20:16:04,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 20:16:04,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:04,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 20:16:04,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-11 20:16:04,676 INFO L87 Difference]: Start difference. First operand 4856 states and 17424 transitions. Second operand 4 states. [2020-09-11 20:16:04,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:04,733 INFO L93 Difference]: Finished difference Result 4985 states and 16961 transitions. [2020-09-11 20:16:04,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 20:16:04,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-11 20:16:04,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:04,767 INFO L225 Difference]: With dead ends: 4985 [2020-09-11 20:16:04,767 INFO L226 Difference]: Without dead ends: 4985 [2020-09-11 20:16:04,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-11 20:16:04,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4985 states. [2020-09-11 20:16:04,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4985 to 4793. [2020-09-11 20:16:04,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4793 states. [2020-09-11 20:16:04,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4793 states to 4793 states and 16469 transitions. [2020-09-11 20:16:04,952 INFO L78 Accepts]: Start accepts. Automaton has 4793 states and 16469 transitions. Word has length 12 [2020-09-11 20:16:04,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:04,952 INFO L479 AbstractCegarLoop]: Abstraction has 4793 states and 16469 transitions. [2020-09-11 20:16:04,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 20:16:04,952 INFO L276 IsEmpty]: Start isEmpty. Operand 4793 states and 16469 transitions. [2020-09-11 20:16:04,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 20:16:04,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:04,955 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:04,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-11 20:16:04,955 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:16:04,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:04,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1534304145, now seen corresponding path program 1 times [2020-09-11 20:16:04,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:04,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604042099] [2020-09-11 20:16:04,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:16:04,972 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:16:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:16:04,986 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:16:04,993 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 20:16:04,993 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 20:16:04,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-11 20:16:04,994 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-11 20:16:04,994 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 20:16:04,994 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-09-11 20:16:05,002 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,002 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,002 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,002 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,002 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,003 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,003 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,003 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,003 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,003 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,003 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,004 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,004 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,004 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,004 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,004 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,004 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,005 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,005 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,005 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,005 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,005 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,005 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,006 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,006 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,006 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,006 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,006 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,006 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,007 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,007 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,007 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,007 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,007 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,007 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,008 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,008 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,008 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,008 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,008 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,013 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,013 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,013 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,013 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,013 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,014 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,015 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,015 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,015 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,015 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,050 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,050 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,050 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,050 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,050 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,052 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,052 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,052 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,052 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,052 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:05,057 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-11 20:16:05,057 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 20:16:05,058 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 20:16:05,058 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 20:16:05,058 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 20:16:05,058 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 20:16:05,058 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 20:16:05,058 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 20:16:05,058 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 20:16:05,060 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 99 transitions, 258 flow [2020-09-11 20:16:05,060 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 258 flow [2020-09-11 20:16:05,187 INFO L129 PetriNetUnfolder]: 189/1172 cut-off events. [2020-09-11 20:16:05,187 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2020-09-11 20:16:05,192 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 1172 events. 189/1172 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6706 event pairs, 23 based on Foata normal form. 0/967 useless extension candidates. Maximal degree in co-relation 658. Up to 80 conditions per place. [2020-09-11 20:16:05,219 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 258 flow [2020-09-11 20:16:05,381 INFO L129 PetriNetUnfolder]: 189/1172 cut-off events. [2020-09-11 20:16:05,381 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2020-09-11 20:16:05,385 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 1172 events. 189/1172 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6706 event pairs, 23 based on Foata normal form. 0/967 useless extension candidates. Maximal degree in co-relation 658. Up to 80 conditions per place. [2020-09-11 20:16:05,407 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2850 [2020-09-11 20:16:05,408 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 20:16:06,615 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-09-11 20:16:07,047 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-09-11 20:16:07,137 INFO L206 etLargeBlockEncoding]: Checked pairs total: 5971 [2020-09-11 20:16:07,138 INFO L214 etLargeBlockEncoding]: Total number of compositions: 70 [2020-09-11 20:16:07,138 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 38 transitions, 136 flow [2020-09-11 20:16:09,409 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26310 states. [2020-09-11 20:16:09,410 INFO L276 IsEmpty]: Start isEmpty. Operand 26310 states. [2020-09-11 20:16:09,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-11 20:16:09,410 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:09,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-11 20:16:09,410 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:16:09,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:09,411 INFO L82 PathProgramCache]: Analyzing trace with hash 29336307, now seen corresponding path program 1 times [2020-09-11 20:16:09,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:09,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003704779] [2020-09-11 20:16:09,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:09,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:09,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003704779] [2020-09-11 20:16:09,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:09,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 20:16:09,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796380419] [2020-09-11 20:16:09,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:16:09,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:09,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:16:09,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:16:09,438 INFO L87 Difference]: Start difference. First operand 26310 states. Second operand 3 states. [2020-09-11 20:16:10,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:10,190 INFO L93 Difference]: Finished difference Result 26310 states and 110676 transitions. [2020-09-11 20:16:10,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:16:10,190 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-11 20:16:10,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:10,329 INFO L225 Difference]: With dead ends: 26310 [2020-09-11 20:16:10,329 INFO L226 Difference]: Without dead ends: 23184 [2020-09-11 20:16:10,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:16:10,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23184 states. [2020-09-11 20:16:11,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23184 to 23184. [2020-09-11 20:16:11,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23184 states. [2020-09-11 20:16:11,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23184 states to 23184 states and 98175 transitions. [2020-09-11 20:16:11,396 INFO L78 Accepts]: Start accepts. Automaton has 23184 states and 98175 transitions. Word has length 4 [2020-09-11 20:16:11,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:11,396 INFO L479 AbstractCegarLoop]: Abstraction has 23184 states and 98175 transitions. [2020-09-11 20:16:11,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:16:11,397 INFO L276 IsEmpty]: Start isEmpty. Operand 23184 states and 98175 transitions. [2020-09-11 20:16:11,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 20:16:11,397 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:11,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:11,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-11 20:16:11,397 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:16:11,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:11,398 INFO L82 PathProgramCache]: Analyzing trace with hash 805936127, now seen corresponding path program 1 times [2020-09-11 20:16:11,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:11,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725084412] [2020-09-11 20:16:11,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:11,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:11,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725084412] [2020-09-11 20:16:11,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657793957] [2020-09-11 20:16:11,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:11,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-11 20:16:11,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:16:11,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:11,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:16:11,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-09-11 20:16:11,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171881677] [2020-09-11 20:16:11,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 20:16:11,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:11,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 20:16:11,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-11 20:16:11,549 INFO L87 Difference]: Start difference. First operand 23184 states and 98175 transitions. Second operand 6 states. [2020-09-11 20:16:11,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:11,755 INFO L93 Difference]: Finished difference Result 23184 states and 98171 transitions. [2020-09-11 20:16:11,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 20:16:11,756 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-09-11 20:16:11,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:11,869 INFO L225 Difference]: With dead ends: 23184 [2020-09-11 20:16:11,869 INFO L226 Difference]: Without dead ends: 23184 [2020-09-11 20:16:11,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-11 20:16:13,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23184 states. [2020-09-11 20:16:14,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23184 to 23184. [2020-09-11 20:16:14,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23184 states. [2020-09-11 20:16:14,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23184 states to 23184 states and 98171 transitions. [2020-09-11 20:16:14,137 INFO L78 Accepts]: Start accepts. Automaton has 23184 states and 98171 transitions. Word has length 8 [2020-09-11 20:16:14,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:14,137 INFO L479 AbstractCegarLoop]: Abstraction has 23184 states and 98171 transitions. [2020-09-11 20:16:14,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 20:16:14,137 INFO L276 IsEmpty]: Start isEmpty. Operand 23184 states and 98171 transitions. [2020-09-11 20:16:14,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 20:16:14,138 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:14,138 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:14,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:14,348 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:16:14,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:14,348 INFO L82 PathProgramCache]: Analyzing trace with hash -921892950, now seen corresponding path program 1 times [2020-09-11 20:16:14,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:14,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912435434] [2020-09-11 20:16:14,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:14,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 20:16:14,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912435434] [2020-09-11 20:16:14,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:14,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:16:14,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884792209] [2020-09-11 20:16:14,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 20:16:14,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:14,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 20:16:14,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-11 20:16:14,416 INFO L87 Difference]: Start difference. First operand 23184 states and 98171 transitions. Second operand 4 states. [2020-09-11 20:16:14,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:14,904 INFO L93 Difference]: Finished difference Result 24533 states and 99507 transitions. [2020-09-11 20:16:14,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 20:16:14,905 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-11 20:16:14,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:15,026 INFO L225 Difference]: With dead ends: 24533 [2020-09-11 20:16:15,027 INFO L226 Difference]: Without dead ends: 24533 [2020-09-11 20:16:15,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-11 20:16:15,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24533 states. [2020-09-11 20:16:15,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24533 to 23573. [2020-09-11 20:16:15,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23573 states. [2020-09-11 20:16:16,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23573 states to 23573 states and 96327 transitions. [2020-09-11 20:16:16,028 INFO L78 Accepts]: Start accepts. Automaton has 23573 states and 96327 transitions. Word has length 12 [2020-09-11 20:16:16,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:16,028 INFO L479 AbstractCegarLoop]: Abstraction has 23573 states and 96327 transitions. [2020-09-11 20:16:16,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 20:16:16,028 INFO L276 IsEmpty]: Start isEmpty. Operand 23573 states and 96327 transitions. [2020-09-11 20:16:16,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-11 20:16:16,031 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:16,031 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:16,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-11 20:16:16,031 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:16:16,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:16,032 INFO L82 PathProgramCache]: Analyzing trace with hash 81754288, now seen corresponding path program 1 times [2020-09-11 20:16:16,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:16,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175789260] [2020-09-11 20:16:16,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:16,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:16:16,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175789260] [2020-09-11 20:16:16,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679372370] [2020-09-11 20:16:16,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:16:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:16,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2020-09-11 20:16:16,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:16:16,228 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:16:16,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:16:16,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-09-11 20:16:16,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875212164] [2020-09-11 20:16:16,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-11 20:16:16,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:16,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-11 20:16:16,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-09-11 20:16:16,230 INFO L87 Difference]: Start difference. First operand 23573 states and 96327 transitions. Second operand 8 states. [2020-09-11 20:16:16,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:16,784 INFO L93 Difference]: Finished difference Result 23557 states and 96271 transitions. [2020-09-11 20:16:16,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 20:16:16,784 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-09-11 20:16:16,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:16,868 INFO L225 Difference]: With dead ends: 23557 [2020-09-11 20:16:16,868 INFO L226 Difference]: Without dead ends: 23557 [2020-09-11 20:16:16,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-09-11 20:16:17,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23557 states. [2020-09-11 20:16:17,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23557 to 23557. [2020-09-11 20:16:17,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23557 states. [2020-09-11 20:16:17,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23557 states to 23557 states and 96271 transitions. [2020-09-11 20:16:17,702 INFO L78 Accepts]: Start accepts. Automaton has 23557 states and 96271 transitions. Word has length 20 [2020-09-11 20:16:17,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:16:17,702 INFO L479 AbstractCegarLoop]: Abstraction has 23557 states and 96271 transitions. [2020-09-11 20:16:17,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-11 20:16:17,702 INFO L276 IsEmpty]: Start isEmpty. Operand 23557 states and 96271 transitions. [2020-09-11 20:16:17,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 20:16:17,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:17,709 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:16:18,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-09-11 20:16:18,344 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:16:18,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:18,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1012463302, now seen corresponding path program 1 times [2020-09-11 20:16:18,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:18,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728941248] [2020-09-11 20:16:18,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:16:18,368 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:16:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:16:18,385 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:16:18,401 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 20:16:18,401 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 20:16:18,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-11 20:16:18,402 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-11 20:16:18,402 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 20:16:18,402 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-09-11 20:16:18,411 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,412 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,412 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,412 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,412 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,412 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,413 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,413 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,413 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,413 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,413 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,413 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,414 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,414 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,414 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,414 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,414 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,414 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,414 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,415 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,415 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,415 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,415 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,415 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,415 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,416 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,416 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,416 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,416 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,416 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,416 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,416 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,417 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,417 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,417 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,417 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,417 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,417 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,417 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,418 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,418 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,418 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,418 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,418 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,419 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,419 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,419 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,420 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,420 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,420 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,421 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,421 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,422 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,422 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,422 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,422 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,423 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,424 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,424 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,424 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,424 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,424 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,425 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,426 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,426 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,426 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,426 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,427 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,427 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,428 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,428 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,428 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:16:18,433 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-11 20:16:18,434 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 20:16:18,434 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 20:16:18,434 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 20:16:18,434 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 20:16:18,434 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 20:16:18,434 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 20:16:18,434 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 20:16:18,434 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 20:16:18,436 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 106 transitions, 290 flow [2020-09-11 20:16:18,436 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 290 flow [2020-09-11 20:16:18,729 INFO L129 PetriNetUnfolder]: 399/2291 cut-off events. [2020-09-11 20:16:18,729 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2020-09-11 20:16:18,739 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2523 conditions, 2291 events. 399/2291 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 16164 event pairs, 72 based on Foata normal form. 0/1892 useless extension candidates. Maximal degree in co-relation 1271. Up to 192 conditions per place. [2020-09-11 20:16:18,788 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 290 flow [2020-09-11 20:16:19,083 INFO L129 PetriNetUnfolder]: 399/2291 cut-off events. [2020-09-11 20:16:19,084 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2020-09-11 20:16:19,094 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2523 conditions, 2291 events. 399/2291 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 16164 event pairs, 72 based on Foata normal form. 0/1892 useless extension candidates. Maximal degree in co-relation 1271. Up to 192 conditions per place. [2020-09-11 20:16:19,135 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3660 [2020-09-11 20:16:19,136 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 20:16:20,231 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-09-11 20:16:20,647 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-11 20:16:20,758 INFO L206 etLargeBlockEncoding]: Checked pairs total: 8653 [2020-09-11 20:16:20,758 INFO L214 etLargeBlockEncoding]: Total number of compositions: 71 [2020-09-11 20:16:20,759 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 43 transitions, 164 flow [2020-09-11 20:16:58,039 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 127122 states. [2020-09-11 20:16:58,039 INFO L276 IsEmpty]: Start isEmpty. Operand 127122 states. [2020-09-11 20:16:58,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-11 20:16:58,039 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:16:58,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-11 20:16:58,040 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:16:58,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:16:58,040 INFO L82 PathProgramCache]: Analyzing trace with hash 35155697, now seen corresponding path program 1 times [2020-09-11 20:16:58,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:16:58,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364286012] [2020-09-11 20:16:58,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:16:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:16:58,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:16:58,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364286012] [2020-09-11 20:16:58,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:16:58,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 20:16:58,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768676280] [2020-09-11 20:16:58,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:16:58,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:16:58,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:16:58,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:16:58,078 INFO L87 Difference]: Start difference. First operand 127122 states. Second operand 3 states. [2020-09-11 20:16:59,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:16:59,190 INFO L93 Difference]: Finished difference Result 127122 states and 615398 transitions. [2020-09-11 20:16:59,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:16:59,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-11 20:16:59,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:16:59,663 INFO L225 Difference]: With dead ends: 127122 [2020-09-11 20:16:59,664 INFO L226 Difference]: Without dead ends: 111496 [2020-09-11 20:16:59,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:17:06,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111496 states. [2020-09-11 20:17:08,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111496 to 111496. [2020-09-11 20:17:08,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111496 states. [2020-09-11 20:17:14,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111496 states to 111496 states and 543522 transitions. [2020-09-11 20:17:14,753 INFO L78 Accepts]: Start accepts. Automaton has 111496 states and 543522 transitions. Word has length 4 [2020-09-11 20:17:14,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:14,753 INFO L479 AbstractCegarLoop]: Abstraction has 111496 states and 543522 transitions. [2020-09-11 20:17:14,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:17:14,753 INFO L276 IsEmpty]: Start isEmpty. Operand 111496 states and 543522 transitions. [2020-09-11 20:17:14,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 20:17:14,753 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:14,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:14,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-11 20:17:14,754 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:17:14,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:14,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1170285684, now seen corresponding path program 1 times [2020-09-11 20:17:14,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:14,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797912084] [2020-09-11 20:17:14,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:14,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:17:14,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797912084] [2020-09-11 20:17:14,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904649233] [2020-09-11 20:17:14,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:17:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:14,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-11 20:17:14,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:17:14,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:17:14,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:17:14,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-09-11 20:17:14,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292811758] [2020-09-11 20:17:14,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 20:17:14,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:14,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 20:17:14,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-11 20:17:14,912 INFO L87 Difference]: Start difference. First operand 111496 states and 543522 transitions. Second operand 6 states. [2020-09-11 20:17:15,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:15,627 INFO L93 Difference]: Finished difference Result 111496 states and 543518 transitions. [2020-09-11 20:17:15,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 20:17:15,628 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-09-11 20:17:15,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:16,061 INFO L225 Difference]: With dead ends: 111496 [2020-09-11 20:17:16,061 INFO L226 Difference]: Without dead ends: 111496 [2020-09-11 20:17:16,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-11 20:17:25,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111496 states. [2020-09-11 20:17:27,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111496 to 111496. [2020-09-11 20:17:27,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111496 states. [2020-09-11 20:17:29,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111496 states to 111496 states and 543518 transitions. [2020-09-11 20:17:29,102 INFO L78 Accepts]: Start accepts. Automaton has 111496 states and 543518 transitions. Word has length 8 [2020-09-11 20:17:29,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:29,102 INFO L479 AbstractCegarLoop]: Abstraction has 111496 states and 543518 transitions. [2020-09-11 20:17:29,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 20:17:29,102 INFO L276 IsEmpty]: Start isEmpty. Operand 111496 states and 543518 transitions. [2020-09-11 20:17:29,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 20:17:29,102 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:29,103 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:29,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:17:29,304 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:17:29,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:29,304 INFO L82 PathProgramCache]: Analyzing trace with hash -343123130, now seen corresponding path program 1 times [2020-09-11 20:17:29,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:29,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554084236] [2020-09-11 20:17:29,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:29,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 20:17:29,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554084236] [2020-09-11 20:17:29,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:17:29,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:17:29,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033078278] [2020-09-11 20:17:29,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 20:17:29,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:29,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 20:17:29,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-11 20:17:29,355 INFO L87 Difference]: Start difference. First operand 111496 states and 543518 transitions. Second operand 4 states. [2020-09-11 20:17:30,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:30,096 INFO L93 Difference]: Finished difference Result 120737 states and 568389 transitions. [2020-09-11 20:17:30,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 20:17:30,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-11 20:17:30,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:30,515 INFO L225 Difference]: With dead ends: 120737 [2020-09-11 20:17:30,516 INFO L226 Difference]: Without dead ends: 120737 [2020-09-11 20:17:30,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-11 20:17:34,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120737 states. [2020-09-11 20:17:42,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120737 to 116193. [2020-09-11 20:17:42,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116193 states. [2020-09-11 20:17:43,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116193 states to 116193 states and 549849 transitions. [2020-09-11 20:17:43,191 INFO L78 Accepts]: Start accepts. Automaton has 116193 states and 549849 transitions. Word has length 12 [2020-09-11 20:17:43,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:43,191 INFO L479 AbstractCegarLoop]: Abstraction has 116193 states and 549849 transitions. [2020-09-11 20:17:43,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 20:17:43,191 INFO L276 IsEmpty]: Start isEmpty. Operand 116193 states and 549849 transitions. [2020-09-11 20:17:43,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-11 20:17:43,193 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:43,193 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:43,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-11 20:17:43,194 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:17:43,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:43,194 INFO L82 PathProgramCache]: Analyzing trace with hash 173719339, now seen corresponding path program 1 times [2020-09-11 20:17:43,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:43,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915583946] [2020-09-11 20:17:43,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:43,244 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:17:43,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915583946] [2020-09-11 20:17:43,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668804457] [2020-09-11 20:17:43,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:17:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:43,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2020-09-11 20:17:43,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:17:43,374 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:17:43,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:17:43,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-09-11 20:17:43,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934825382] [2020-09-11 20:17:43,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-11 20:17:43,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:43,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-11 20:17:43,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-09-11 20:17:43,377 INFO L87 Difference]: Start difference. First operand 116193 states and 549849 transitions. Second operand 8 states. [2020-09-11 20:17:49,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:49,602 INFO L93 Difference]: Finished difference Result 116177 states and 549793 transitions. [2020-09-11 20:17:49,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 20:17:49,602 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-09-11 20:17:49,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:50,148 INFO L225 Difference]: With dead ends: 116177 [2020-09-11 20:17:50,148 INFO L226 Difference]: Without dead ends: 116177 [2020-09-11 20:17:50,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-09-11 20:17:52,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116177 states. [2020-09-11 20:17:54,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116177 to 116177. [2020-09-11 20:17:54,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116177 states. [2020-09-11 20:17:55,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116177 states to 116177 states and 549793 transitions. [2020-09-11 20:17:55,156 INFO L78 Accepts]: Start accepts. Automaton has 116177 states and 549793 transitions. Word has length 20 [2020-09-11 20:17:55,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:17:55,157 INFO L479 AbstractCegarLoop]: Abstraction has 116177 states and 549793 transitions. [2020-09-11 20:17:55,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-11 20:17:55,157 INFO L276 IsEmpty]: Start isEmpty. Operand 116177 states and 549793 transitions. [2020-09-11 20:17:55,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-11 20:17:55,163 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:17:55,163 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:17:55,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:17:55,376 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:17:55,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:17:55,377 INFO L82 PathProgramCache]: Analyzing trace with hash -999416206, now seen corresponding path program 1 times [2020-09-11 20:17:55,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:17:55,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86212939] [2020-09-11 20:17:55,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:17:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:55,453 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:17:55,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86212939] [2020-09-11 20:17:55,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204586338] [2020-09-11 20:17:55,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:17:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:17:55,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-11 20:17:55,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:17:55,612 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 20:17:55,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:17:55,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-09-11 20:17:55,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075048936] [2020-09-11 20:17:55,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-11 20:17:55,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:17:55,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-11 20:17:55,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2020-09-11 20:17:55,614 INFO L87 Difference]: Start difference. First operand 116177 states and 549793 transitions. Second operand 10 states. [2020-09-11 20:17:57,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:17:57,387 INFO L93 Difference]: Finished difference Result 116113 states and 549521 transitions. [2020-09-11 20:17:57,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 20:17:57,388 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-09-11 20:17:57,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:17:57,825 INFO L225 Difference]: With dead ends: 116113 [2020-09-11 20:17:57,825 INFO L226 Difference]: Without dead ends: 116113 [2020-09-11 20:17:57,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2020-09-11 20:18:06,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116113 states. [2020-09-11 20:18:08,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116113 to 116113. [2020-09-11 20:18:08,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116113 states. [2020-09-11 20:18:09,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116113 states to 116113 states and 549521 transitions. [2020-09-11 20:18:09,440 INFO L78 Accepts]: Start accepts. Automaton has 116113 states and 549521 transitions. Word has length 24 [2020-09-11 20:18:09,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:18:09,441 INFO L479 AbstractCegarLoop]: Abstraction has 116113 states and 549521 transitions. [2020-09-11 20:18:09,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-11 20:18:09,441 INFO L276 IsEmpty]: Start isEmpty. Operand 116113 states and 549521 transitions. [2020-09-11 20:18:09,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-11 20:18:09,462 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:18:09,462 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:18:09,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-09-11 20:18:09,676 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:18:09,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:18:09,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1963695170, now seen corresponding path program 1 times [2020-09-11 20:18:09,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:18:09,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735041314] [2020-09-11 20:18:09,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:18:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:18:09,693 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:18:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 20:18:09,708 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 20:18:09,717 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 20:18:09,717 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 20:18:09,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-11 20:18:09,718 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-11 20:18:09,718 WARN L363 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 20:18:09,718 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-09-11 20:18:09,728 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,729 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,729 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,729 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,729 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,729 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,730 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,730 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,730 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,730 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,730 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,730 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,730 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,731 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,731 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,731 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,731 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,731 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,731 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,732 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,732 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,732 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,732 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,732 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,732 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,733 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,733 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,733 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,733 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,733 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,733 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,734 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,734 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,734 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,734 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,734 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,734 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,735 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,735 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,735 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,735 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,735 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,735 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,736 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,736 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,736 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,736 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,736 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,736 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,737 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,737 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,737 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,737 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,737 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,739 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,739 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,739 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,739 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,740 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,741 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,741 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,741 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,741 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,741 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,742 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,743 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,743 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,743 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,743 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,744 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,745 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,745 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,745 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,745 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,746 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,746 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,747 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,747 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,747 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,748 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,749 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,749 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,749 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,749 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:18:09,756 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-11 20:18:09,757 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 20:18:09,757 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 20:18:09,757 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 20:18:09,757 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 20:18:09,757 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 20:18:09,757 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 20:18:09,758 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 20:18:09,758 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 20:18:09,759 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 113 transitions, 324 flow [2020-09-11 20:18:09,759 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 115 places, 113 transitions, 324 flow [2020-09-11 20:18:10,514 INFO L129 PetriNetUnfolder]: 849/4546 cut-off events. [2020-09-11 20:18:10,514 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2020-09-11 20:18:10,539 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5044 conditions, 4546 events. 849/4546 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 38350 event pairs, 201 based on Foata normal form. 0/3761 useless extension candidates. Maximal degree in co-relation 2509. Up to 448 conditions per place. [2020-09-11 20:18:10,635 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 115 places, 113 transitions, 324 flow [2020-09-11 20:18:11,135 INFO L129 PetriNetUnfolder]: 849/4546 cut-off events. [2020-09-11 20:18:11,135 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2020-09-11 20:18:11,160 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5044 conditions, 4546 events. 849/4546 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 38350 event pairs, 201 based on Foata normal form. 0/3761 useless extension candidates. Maximal degree in co-relation 2509. Up to 448 conditions per place. [2020-09-11 20:18:11,250 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4550 [2020-09-11 20:18:11,250 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 20:18:12,936 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-11 20:18:13,042 INFO L206 etLargeBlockEncoding]: Checked pairs total: 11131 [2020-09-11 20:18:13,042 INFO L214 etLargeBlockEncoding]: Total number of compositions: 75 [2020-09-11 20:18:13,043 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 48 transitions, 194 flow Received shutdown request... [2020-09-11 20:19:34,199 WARN L544 AbstractCegarLoop]: Verification canceled [2020-09-11 20:19:34,202 WARN L228 ceAbstractionStarter]: Timeout [2020-09-11 20:19:34,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 08:19:34 BasicIcfg [2020-09-11 20:19:34,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 20:19:34,204 INFO L168 Benchmark]: Toolchain (without parser) took 222878.73 ms. Allocated memory was 140.0 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 101.3 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2020-09-11 20:19:34,205 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-11 20:19:34,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 796.77 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 162.2 MB in the end (delta: -61.5 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-09-11 20:19:34,206 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.24 ms. Allocated memory is still 203.4 MB. Free memory was 162.2 MB in the beginning and 159.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-11 20:19:34,206 INFO L168 Benchmark]: Boogie Preprocessor took 37.05 ms. Allocated memory is still 203.4 MB. Free memory was 159.6 MB in the beginning and 158.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-11 20:19:34,207 INFO L168 Benchmark]: RCFGBuilder took 523.73 ms. Allocated memory is still 203.4 MB. Free memory was 158.3 MB in the beginning and 135.3 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-09-11 20:19:34,207 INFO L168 Benchmark]: TraceAbstraction took 221448.65 ms. Allocated memory was 203.4 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 135.3 MB in the beginning and 1.9 GB in the end (delta: -1.7 GB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2020-09-11 20:19:34,210 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 796.77 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 162.2 MB in the end (delta: -61.5 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 63.24 ms. Allocated memory is still 203.4 MB. Free memory was 162.2 MB in the beginning and 159.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.05 ms. Allocated memory is still 203.4 MB. Free memory was 159.6 MB in the beginning and 158.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 523.73 ms. Allocated memory is still 203.4 MB. Free memory was 158.3 MB in the beginning and 135.3 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 221448.65 ms. Allocated memory was 203.4 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 135.3 MB in the beginning and 1.9 GB in the end (delta: -1.7 GB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.1s, 67 ProgramPointsBefore, 15 ProgramPointsAfterwards, 71 TransitionsBefore, 14 TransitionsAfterwards, 370 CoEnabledTransitionPairs, 7 FixpointIterations, 24 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 181 VarBasedMoverChecksPositive, 3 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 264 CheckedPairsTotal, 66 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.1s, 75 ProgramPointsBefore, 25 ProgramPointsAfterwards, 78 TransitionsBefore, 23 TransitionsAfterwards, 900 CoEnabledTransitionPairs, 7 FixpointIterations, 23 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 456 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1723 CheckedPairsTotal, 62 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 83 ProgramPointsBefore, 31 ProgramPointsAfterwards, 85 TransitionsBefore, 28 TransitionsAfterwards, 1470 CoEnabledTransitionPairs, 7 FixpointIterations, 25 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 749 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 3028 CheckedPairsTotal, 68 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 91 ProgramPointsBefore, 37 ProgramPointsAfterwards, 92 TransitionsBefore, 33 TransitionsAfterwards, 2120 CoEnabledTransitionPairs, 7 FixpointIterations, 25 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 12 ConcurrentYvCompositions, 5 ChoiceCompositions, 909 VarBasedMoverChecksPositive, 17 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 4448 CheckedPairsTotal, 68 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 99 ProgramPointsBefore, 43 ProgramPointsAfterwards, 99 TransitionsBefore, 38 TransitionsAfterwards, 2850 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 1450 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 5971 CheckedPairsTotal, 70 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.3s, 107 ProgramPointsBefore, 49 ProgramPointsAfterwards, 106 TransitionsBefore, 43 TransitionsAfterwards, 3660 CoEnabledTransitionPairs, 7 FixpointIterations, 21 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 9 ConcurrentYvCompositions, 5 ChoiceCompositions, 1534 VarBasedMoverChecksPositive, 28 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 8653 CheckedPairsTotal, 71 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 3.2s, 115 ProgramPointsBefore, 55 ProgramPointsAfterwards, 113 TransitionsBefore, 48 TransitionsAfterwards, 4550 CoEnabledTransitionPairs, 7 FixpointIterations, 25 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 2156 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 11131 CheckedPairsTotal, 75 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 678]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 678). Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 55 places, 48 transitions, 194 flow. Already constructed 177600 states. Currently 31047 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 64 locations, 1 error locations. Started 7 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 221.1s, OverallIterations: 24, TraceHistogramMax: 7, AutomataDifference: 16.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 136.6s, HoareTripleCheckerStatistics: 580 SDtfs, 632 SDslu, 745 SDs, 0 SdLazy, 304 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127122occurred 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: 63.4s AutomataMinimizationTime, 18 MinimizatonAttempts, 5728 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 381 NumberOfCodeBlocks, 381 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 254 ConstructedInterpolants, 0 QuantifiedInterpolants, 15574 SizeOfPredicates, 8 NumberOfNonLiveVariables, 646 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 26 InterpolantComputations, 10 PerfectInterpolantSequences, 36/100 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown