/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-b09bf87 [2020-10-16 12:19:28,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:19:28,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:19:28,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:19:28,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:19:28,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:19:28,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:19:28,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:19:28,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:19:28,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:19:28,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:19:28,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:19:28,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:19:28,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:19:28,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:19:28,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:19:28,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:19:28,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:19:28,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:19:28,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:19:28,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:19:28,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:19:28,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:19:28,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:19:28,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 12:19:28,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:19:28,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:19:28,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:19:28,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:19:28,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:19:28,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:19:28,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:19:28,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:19:28,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:19:28,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:19:28,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:19:28,673 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 [2020-10-16 12:19:28,715 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:19:28,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:19:28,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:19:28,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:19:28,718 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:19:28,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:19:28,719 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:19:28,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:19:28,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:19:28,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:19:28,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:19:28,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:19:28,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:19:28,721 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:19:28,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:19:28,721 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:19:28,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:19:28,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:19:28,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:19:28,722 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:19:28,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:19:28,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:19:28,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:19:28,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:19:28,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:19:28,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:19:28,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:19:28,724 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:19:28,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:19:29,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:19:29,055 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:19:29,059 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:19:29,061 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:19:29,061 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:19:29,062 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2020-10-16 12:19:29,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f695707e/370f64921fb0452abc6cfe1c098c9806/FLAG182e417ec [2020-10-16 12:19:29,737 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:19:29,738 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2020-10-16 12:19:29,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f695707e/370f64921fb0452abc6cfe1c098c9806/FLAG182e417ec [2020-10-16 12:19:30,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f695707e/370f64921fb0452abc6cfe1c098c9806 [2020-10-16 12:19:30,056 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:19:30,058 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:19:30,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:19:30,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:19:30,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:19:30,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:19:30" (1/1) ... [2020-10-16 12:19:30,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c23fc4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:30, skipping insertion in model container [2020-10-16 12:19:30,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:19:30" (1/1) ... [2020-10-16 12:19:30,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:19:30,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:19:30,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:19:30,724 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:19:30,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:19:30,888 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:19:30,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:30 WrapperNode [2020-10-16 12:19:30,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:19:30,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:19:30,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:19:30,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:19:30,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:30" (1/1) ... [2020-10-16 12:19:30,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:30" (1/1) ... [2020-10-16 12:19:30,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:19:30,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:19:30,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:19:30,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:19:30,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:30" (1/1) ... [2020-10-16 12:19:30,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:30" (1/1) ... [2020-10-16 12:19:30,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:30" (1/1) ... [2020-10-16 12:19:30,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:30" (1/1) ... [2020-10-16 12:19:30,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:30" (1/1) ... [2020-10-16 12:19:30,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:30" (1/1) ... [2020-10-16 12:19:30,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:30" (1/1) ... [2020-10-16 12:19:30,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:19:30,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:19:30,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:19:30,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:19:30,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:19:31,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-16 12:19:31,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 12:19:31,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:19:31,052 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2020-10-16 12:19:31,052 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2020-10-16 12:19:31,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:19:31,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:19:31,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:19:31,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:19:31,055 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:19:31,453 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:19:31,453 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-16 12:19:31,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:19:31 BoogieIcfgContainer [2020-10-16 12:19:31,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:19:31,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:19:31,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:19:31,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:19:31,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:19:30" (1/3) ... [2020-10-16 12:19:31,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335efeb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:19:31, skipping insertion in model container [2020-10-16 12:19:31,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:19:30" (2/3) ... [2020-10-16 12:19:31,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335efeb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:19:31, skipping insertion in model container [2020-10-16 12:19:31,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:19:31" (3/3) ... [2020-10-16 12:19:31,466 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-array-1.i [2020-10-16 12:19:31,478 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:19:31,479 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:19:31,487 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 12:19:31,488 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:19:31,516 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:31,517 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:31,517 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:31,517 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:31,518 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:31,518 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:31,519 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:31,523 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:31,524 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:31,524 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:31,524 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:31,524 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:31,533 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-10-16 12:19:31,549 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-16 12:19:31,573 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:19:31,574 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:19:31,574 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:19:31,574 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:19:31,574 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:19:31,575 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:19:31,575 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:19:31,575 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:19:31,590 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:19:31,591 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 71 transitions, 150 flow [2020-10-16 12:19:31,594 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 71 transitions, 150 flow [2020-10-16 12:19:31,595 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 71 transitions, 150 flow [2020-10-16 12:19:31,654 INFO L129 PetriNetUnfolder]: 12/103 cut-off events. [2020-10-16 12:19:31,654 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-16 12:19:31,660 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. [2020-10-16 12:19:31,663 INFO L117 LiptonReduction]: Number of co-enabled transitions 370 [2020-10-16 12:19:33,011 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-16 12:19:33,250 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-16 12:19:33,411 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-16 12:19:33,493 INFO L132 LiptonReduction]: Checked pairs total: 397 [2020-10-16 12:19:33,496 INFO L134 LiptonReduction]: Total number of compositions: 71 [2020-10-16 12:19:33,508 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 14 transitions, 36 flow [2020-10-16 12:19:33,519 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 27 states. [2020-10-16 12:19:33,522 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-16 12:19:33,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-16 12:19:33,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:33,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-16 12:19:33,534 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:33,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:33,541 INFO L82 PathProgramCache]: Analyzing trace with hash 8680406, now seen corresponding path program 1 times [2020-10-16 12:19:33,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:33,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869049375] [2020-10-16 12:19:33,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:33,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:19:33,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869049375] [2020-10-16 12:19:33,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:33,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:19:33,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685330443] [2020-10-16 12:19:33,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:19:33,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:33,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:19:33,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:19:33,772 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-10-16 12:19:33,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:33,819 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-10-16 12:19:33,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:19:33,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-16 12:19:33,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:33,834 INFO L225 Difference]: With dead ends: 27 [2020-10-16 12:19:33,835 INFO L226 Difference]: Without dead ends: 23 [2020-10-16 12:19:33,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:19:33,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-16 12:19:33,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-16 12:19:33,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-16 12:19:33,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2020-10-16 12:19:33,878 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 4 [2020-10-16 12:19:33,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:33,878 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2020-10-16 12:19:33,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:19:33,879 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2020-10-16 12:19:33,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-16 12:19:33,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:33,879 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-10-16 12:19:33,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:19:33,880 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:33,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:33,881 INFO L82 PathProgramCache]: Analyzing trace with hash -256835414, now seen corresponding path program 1 times [2020-10-16 12:19:33,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:33,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242641473] [2020-10-16 12:19:33,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:33,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:19:33,917 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:19:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:19:33,937 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:19:33,965 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:19:33,966 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:19:33,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:19:33,968 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 12:19:33,969 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 12:19:33,969 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-16 12:19:33,977 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:33,977 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:33,977 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:33,978 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:33,978 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:33,978 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:33,978 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:33,979 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:33,979 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:33,979 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:33,979 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:33,979 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:33,980 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:33,980 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:33,980 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:33,981 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:33,981 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:33,981 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:33,981 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:33,983 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:33,984 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:33,984 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:33,984 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:33,984 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:33,992 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2020-10-16 12:19:33,992 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-16 12:19:33,993 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:19:33,993 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:19:33,993 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:19:33,993 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:19:33,993 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:19:33,993 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:19:33,993 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:19:33,993 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:19:33,996 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:19:33,996 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 78 transitions, 174 flow [2020-10-16 12:19:33,997 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 78 transitions, 174 flow [2020-10-16 12:19:33,997 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 78 transitions, 174 flow [2020-10-16 12:19:34,037 INFO L129 PetriNetUnfolder]: 23/183 cut-off events. [2020-10-16 12:19:34,037 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-16 12:19:34,040 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. [2020-10-16 12:19:34,043 INFO L117 LiptonReduction]: Number of co-enabled transitions 900 [2020-10-16 12:19:35,121 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-10-16 12:19:35,420 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-16 12:19:35,672 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2020-10-16 12:19:35,742 INFO L132 LiptonReduction]: Checked pairs total: 2415 [2020-10-16 12:19:35,743 INFO L134 LiptonReduction]: Total number of compositions: 67 [2020-10-16 12:19:35,743 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 23 transitions, 64 flow [2020-10-16 12:19:35,755 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 242 states. [2020-10-16 12:19:35,756 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-10-16 12:19:35,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-16 12:19:35,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:35,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-16 12:19:35,757 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:35,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:35,758 INFO L82 PathProgramCache]: Analyzing trace with hash 13452069, now seen corresponding path program 1 times [2020-10-16 12:19:35,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:35,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124139435] [2020-10-16 12:19:35,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:35,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:19:35,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124139435] [2020-10-16 12:19:35,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:35,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:19:35,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145977343] [2020-10-16 12:19:35,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:19:35,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:35,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:19:35,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:19:35,830 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 3 states. [2020-10-16 12:19:35,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:35,876 INFO L93 Difference]: Finished difference Result 242 states and 550 transitions. [2020-10-16 12:19:35,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:19:35,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-16 12:19:35,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:35,883 INFO L225 Difference]: With dead ends: 242 [2020-10-16 12:19:35,884 INFO L226 Difference]: Without dead ends: 216 [2020-10-16 12:19:35,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:19:35,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-16 12:19:35,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-10-16 12:19:35,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-16 12:19:35,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 494 transitions. [2020-10-16 12:19:35,918 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 494 transitions. Word has length 4 [2020-10-16 12:19:35,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:35,918 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 494 transitions. [2020-10-16 12:19:35,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:19:35,918 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 494 transitions. [2020-10-16 12:19:35,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:19:35,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:35,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:35,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:19:35,920 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:35,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:35,920 INFO L82 PathProgramCache]: Analyzing trace with hash 76722491, now seen corresponding path program 1 times [2020-10-16 12:19:35,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:35,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181545381] [2020-10-16 12:19:35,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:36,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 12:19:36,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181545381] [2020-10-16 12:19:36,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:36,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:19:36,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695076694] [2020-10-16 12:19:36,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:19:36,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:36,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:19:36,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:19:36,004 INFO L87 Difference]: Start difference. First operand 216 states and 494 transitions. Second operand 4 states. [2020-10-16 12:19:36,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:36,040 INFO L93 Difference]: Finished difference Result 203 states and 426 transitions. [2020-10-16 12:19:36,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:19:36,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-16 12:19:36,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:36,044 INFO L225 Difference]: With dead ends: 203 [2020-10-16 12:19:36,044 INFO L226 Difference]: Without dead ends: 203 [2020-10-16 12:19:36,045 INFO L677 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 [2020-10-16 12:19:36,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-16 12:19:36,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2020-10-16 12:19:36,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-16 12:19:36,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 420 transitions. [2020-10-16 12:19:36,066 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 420 transitions. Word has length 8 [2020-10-16 12:19:36,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:36,067 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 420 transitions. [2020-10-16 12:19:36,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:19:36,067 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 420 transitions. [2020-10-16 12:19:36,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:19:36,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:36,069 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2020-10-16 12:19:36,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:19:36,069 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:36,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:36,070 INFO L82 PathProgramCache]: Analyzing trace with hash 94633273, now seen corresponding path program 1 times [2020-10-16 12:19:36,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:36,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019299390] [2020-10-16 12:19:36,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:19:36,089 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:19:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:19:36,115 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:19:36,127 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:19:36,128 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:19:36,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:19:36,128 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 12:19:36,132 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 12:19:36,134 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-16 12:19:36,147 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,147 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,148 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,148 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,151 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,152 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,152 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,152 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,152 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,152 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,153 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,153 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,153 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,153 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,153 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,154 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,154 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,154 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,154 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,154 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,155 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,155 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,155 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,155 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,156 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,156 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,161 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,161 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,162 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,162 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,162 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,166 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,166 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,166 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,167 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,167 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:36,170 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2020-10-16 12:19:36,170 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-16 12:19:36,171 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:19:36,171 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:19:36,171 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:19:36,171 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:19:36,171 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:19:36,172 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:19:36,172 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:19:36,172 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:19:36,174 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:19:36,174 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 85 transitions, 200 flow [2020-10-16 12:19:36,174 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 85 transitions, 200 flow [2020-10-16 12:19:36,174 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 85 transitions, 200 flow [2020-10-16 12:19:36,228 INFO L129 PetriNetUnfolder]: 45/330 cut-off events. [2020-10-16 12:19:36,228 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-10-16 12:19:36,230 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. [2020-10-16 12:19:36,235 INFO L117 LiptonReduction]: Number of co-enabled transitions 1470 [2020-10-16 12:19:37,456 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-16 12:19:37,545 INFO L132 LiptonReduction]: Checked pairs total: 4432 [2020-10-16 12:19:37,545 INFO L134 LiptonReduction]: Total number of compositions: 73 [2020-10-16 12:19:37,546 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 28 transitions, 86 flow [2020-10-16 12:19:37,600 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1150 states. [2020-10-16 12:19:37,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states. [2020-10-16 12:19:37,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-16 12:19:37,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:37,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-16 12:19:37,602 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:37,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:37,602 INFO L82 PathProgramCache]: Analyzing trace with hash 18528206, now seen corresponding path program 1 times [2020-10-16 12:19:37,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:37,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899571552] [2020-10-16 12:19:37,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:37,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:19:37,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899571552] [2020-10-16 12:19:37,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:37,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:19:37,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240797711] [2020-10-16 12:19:37,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:19:37,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:37,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:19:37,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:19:37,649 INFO L87 Difference]: Start difference. First operand 1150 states. Second operand 3 states. [2020-10-16 12:19:37,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:37,693 INFO L93 Difference]: Finished difference Result 1150 states and 3360 transitions. [2020-10-16 12:19:37,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:19:37,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-16 12:19:37,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:37,706 INFO L225 Difference]: With dead ends: 1150 [2020-10-16 12:19:37,706 INFO L226 Difference]: Without dead ends: 1024 [2020-10-16 12:19:37,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:19:37,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-10-16 12:19:37,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2020-10-16 12:19:37,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-10-16 12:19:37,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3009 transitions. [2020-10-16 12:19:37,802 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 3009 transitions. Word has length 4 [2020-10-16 12:19:37,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:37,803 INFO L481 AbstractCegarLoop]: Abstraction has 1024 states and 3009 transitions. [2020-10-16 12:19:37,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:19:37,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 3009 transitions. [2020-10-16 12:19:37,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:19:37,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:37,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:37,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 12:19:37,805 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:37,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:37,805 INFO L82 PathProgramCache]: Analyzing trace with hash 949696130, now seen corresponding path program 1 times [2020-10-16 12:19:37,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:37,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375529975] [2020-10-16 12:19:37,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:37,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 12:19:37,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375529975] [2020-10-16 12:19:37,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:37,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:19:37,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515195296] [2020-10-16 12:19:37,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:19:37,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:37,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:19:37,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:19:37,875 INFO L87 Difference]: Start difference. First operand 1024 states and 3009 transitions. Second operand 4 states. [2020-10-16 12:19:37,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:37,918 INFO L93 Difference]: Finished difference Result 1015 states and 2784 transitions. [2020-10-16 12:19:37,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:19:37,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-16 12:19:37,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:37,927 INFO L225 Difference]: With dead ends: 1015 [2020-10-16 12:19:37,927 INFO L226 Difference]: Without dead ends: 1015 [2020-10-16 12:19:37,928 INFO L677 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 [2020-10-16 12:19:37,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-10-16 12:19:37,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 977. [2020-10-16 12:19:37,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2020-10-16 12:19:37,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 2718 transitions. [2020-10-16 12:19:37,967 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 2718 transitions. Word has length 8 [2020-10-16 12:19:37,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:37,968 INFO L481 AbstractCegarLoop]: Abstraction has 977 states and 2718 transitions. [2020-10-16 12:19:37,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:19:37,968 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 2718 transitions. [2020-10-16 12:19:37,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:19:37,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:37,971 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2020-10-16 12:19:37,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 12:19:37,971 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:37,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:37,972 INFO L82 PathProgramCache]: Analyzing trace with hash -515475845, now seen corresponding path program 1 times [2020-10-16 12:19:37,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:37,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377897300] [2020-10-16 12:19:37,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:19:37,991 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:19:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:19:38,003 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:19:38,010 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:19:38,010 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:19:38,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 12:19:38,010 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 12:19:38,011 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 12:19:38,011 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-16 12:19:38,018 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,019 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,019 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,019 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,019 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,020 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,020 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,020 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,020 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,020 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,020 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,021 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,021 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,021 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,021 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,021 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,021 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,022 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,022 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,022 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,022 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,022 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,022 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,023 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,023 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,023 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,023 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,023 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,024 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,024 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,024 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,024 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,024 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,029 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,030 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,030 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,030 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,030 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,031 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,032 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,032 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,032 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,032 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,034 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,034 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,034 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,034 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,034 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:38,038 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-16 12:19:38,039 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-16 12:19:38,039 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:19:38,039 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:19:38,039 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:19:38,039 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:19:38,040 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:19:38,040 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:19:38,040 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:19:38,040 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:19:38,041 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:19:38,042 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 92 transitions, 228 flow [2020-10-16 12:19:38,042 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 92 transitions, 228 flow [2020-10-16 12:19:38,042 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 92 transitions, 228 flow [2020-10-16 12:19:38,114 INFO L129 PetriNetUnfolder]: 91/613 cut-off events. [2020-10-16 12:19:38,114 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-10-16 12:19:38,117 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. [2020-10-16 12:19:38,130 INFO L117 LiptonReduction]: Number of co-enabled transitions 2120 [2020-10-16 12:19:39,410 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-16 12:19:39,514 INFO L132 LiptonReduction]: Checked pairs total: 7163 [2020-10-16 12:19:39,514 INFO L134 LiptonReduction]: Total number of compositions: 73 [2020-10-16 12:19:39,515 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 33 transitions, 110 flow [2020-10-16 12:19:39,881 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5482 states. [2020-10-16 12:19:39,881 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states. [2020-10-16 12:19:39,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-16 12:19:39,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:39,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-16 12:19:39,882 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:39,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:39,883 INFO L82 PathProgramCache]: Analyzing trace with hash 23824947, now seen corresponding path program 1 times [2020-10-16 12:19:39,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:39,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401111635] [2020-10-16 12:19:39,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:39,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:19:39,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401111635] [2020-10-16 12:19:39,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:39,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:19:39,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278572832] [2020-10-16 12:19:39,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:19:39,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:39,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:19:39,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:19:39,936 INFO L87 Difference]: Start difference. First operand 5482 states. Second operand 3 states. [2020-10-16 12:19:40,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:40,021 INFO L93 Difference]: Finished difference Result 5482 states and 19554 transitions. [2020-10-16 12:19:40,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:19:40,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-16 12:19:40,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:40,069 INFO L225 Difference]: With dead ends: 5482 [2020-10-16 12:19:40,069 INFO L226 Difference]: Without dead ends: 4856 [2020-10-16 12:19:40,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:19:40,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2020-10-16 12:19:40,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2020-10-16 12:19:40,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2020-10-16 12:19:40,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17428 transitions. [2020-10-16 12:19:40,320 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17428 transitions. Word has length 4 [2020-10-16 12:19:40,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:40,321 INFO L481 AbstractCegarLoop]: Abstraction has 4856 states and 17428 transitions. [2020-10-16 12:19:40,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:19:40,321 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17428 transitions. [2020-10-16 12:19:40,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:19:40,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:40,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:40,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 12:19:40,322 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:40,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:40,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1205655351, now seen corresponding path program 1 times [2020-10-16 12:19:40,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:40,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797947396] [2020-10-16 12:19:40,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:40,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 12:19:40,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797947396] [2020-10-16 12:19:40,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:40,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:19:40,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230209979] [2020-10-16 12:19:40,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:19:40,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:40,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:19:40,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:19:40,361 INFO L87 Difference]: Start difference. First operand 4856 states and 17428 transitions. Second operand 4 states. [2020-10-16 12:19:40,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:40,458 INFO L93 Difference]: Finished difference Result 4995 states and 16978 transitions. [2020-10-16 12:19:40,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:19:40,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-16 12:19:40,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:40,505 INFO L225 Difference]: With dead ends: 4995 [2020-10-16 12:19:40,505 INFO L226 Difference]: Without dead ends: 4995 [2020-10-16 12:19:40,508 INFO L677 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 [2020-10-16 12:19:40,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4995 states. [2020-10-16 12:19:40,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4995 to 4797. [2020-10-16 12:19:40,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4797 states. [2020-10-16 12:19:40,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4797 states to 4797 states and 16480 transitions. [2020-10-16 12:19:40,867 INFO L78 Accepts]: Start accepts. Automaton has 4797 states and 16480 transitions. Word has length 8 [2020-10-16 12:19:40,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:40,867 INFO L481 AbstractCegarLoop]: Abstraction has 4797 states and 16480 transitions. [2020-10-16 12:19:40,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:19:40,868 INFO L276 IsEmpty]: Start isEmpty. Operand 4797 states and 16480 transitions. [2020-10-16 12:19:40,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 12:19:40,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:40,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:40,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 12:19:40,876 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:40,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:40,878 INFO L82 PathProgramCache]: Analyzing trace with hash 172994846, now seen corresponding path program 1 times [2020-10-16 12:19:40,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:40,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112193740] [2020-10-16 12:19:40,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:40,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:19:40,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112193740] [2020-10-16 12:19:40,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346022535] [2020-10-16 12:19:40,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:19:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:41,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-16 12:19:41,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:19:41,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:19:41,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:19:41,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-10-16 12:19:41,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215724942] [2020-10-16 12:19:41,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:19:41,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:41,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:19:41,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:19:41,087 INFO L87 Difference]: Start difference. First operand 4797 states and 16480 transitions. Second operand 6 states. [2020-10-16 12:19:41,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:41,185 INFO L93 Difference]: Finished difference Result 4793 states and 16469 transitions. [2020-10-16 12:19:41,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:19:41,186 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-16 12:19:41,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:41,219 INFO L225 Difference]: With dead ends: 4793 [2020-10-16 12:19:41,220 INFO L226 Difference]: Without dead ends: 4793 [2020-10-16 12:19:41,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:19:41,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4793 states. [2020-10-16 12:19:41,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4793 to 4793. [2020-10-16 12:19:41,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4793 states. [2020-10-16 12:19:41,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4793 states to 4793 states and 16469 transitions. [2020-10-16 12:19:41,446 INFO L78 Accepts]: Start accepts. Automaton has 4793 states and 16469 transitions. Word has length 16 [2020-10-16 12:19:41,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:41,446 INFO L481 AbstractCegarLoop]: Abstraction has 4793 states and 16469 transitions. [2020-10-16 12:19:41,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:19:41,447 INFO L276 IsEmpty]: Start isEmpty. Operand 4793 states and 16469 transitions. [2020-10-16 12:19:41,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:19:41,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:41,450 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:41,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-16 12:19:41,666 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:41,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:41,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1534304145, now seen corresponding path program 1 times [2020-10-16 12:19:41,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:41,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096479706] [2020-10-16 12:19:41,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:19:41,682 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:19:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:19:41,694 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:19:41,702 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:19:41,702 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:19:41,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 12:19:41,703 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 12:19:41,704 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 12:19:41,704 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-16 12:19:41,713 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,713 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,714 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,714 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,714 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,714 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,714 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,715 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,715 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,715 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,715 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,715 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,715 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,716 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,716 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,716 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,716 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,716 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,717 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,717 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,717 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,717 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,717 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,717 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,717 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,718 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,718 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,718 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,718 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,718 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,719 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,719 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,719 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,719 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,719 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,720 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,720 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,720 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,720 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,720 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,722 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,722 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,722 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,722 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,723 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,724 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,724 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,724 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,725 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,725 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,726 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,726 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,726 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,727 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,727 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,728 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,728 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,728 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,729 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,729 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:41,733 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2020-10-16 12:19:41,734 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-16 12:19:41,734 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:19:41,734 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:19:41,734 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:19:41,734 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:19:41,735 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:19:41,735 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:19:41,735 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:19:41,735 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:19:41,736 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:19:41,737 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 99 transitions, 258 flow [2020-10-16 12:19:41,737 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 99 transitions, 258 flow [2020-10-16 12:19:41,737 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 258 flow [2020-10-16 12:19:41,874 INFO L129 PetriNetUnfolder]: 189/1172 cut-off events. [2020-10-16 12:19:41,875 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2020-10-16 12:19:41,881 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. [2020-10-16 12:19:41,958 INFO L117 LiptonReduction]: Number of co-enabled transitions 2850 [2020-10-16 12:19:43,018 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-16 12:19:43,350 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-16 12:19:43,419 INFO L132 LiptonReduction]: Checked pairs total: 9531 [2020-10-16 12:19:43,419 INFO L134 LiptonReduction]: Total number of compositions: 75 [2020-10-16 12:19:43,419 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 38 transitions, 136 flow [2020-10-16 12:19:45,773 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26310 states. [2020-10-16 12:19:45,773 INFO L276 IsEmpty]: Start isEmpty. Operand 26310 states. [2020-10-16 12:19:45,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-16 12:19:45,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:45,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-16 12:19:45,774 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:45,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:45,774 INFO L82 PathProgramCache]: Analyzing trace with hash 29336307, now seen corresponding path program 1 times [2020-10-16 12:19:45,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:45,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932144419] [2020-10-16 12:19:45,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:45,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:19:45,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932144419] [2020-10-16 12:19:45,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:45,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:19:45,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198540975] [2020-10-16 12:19:45,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:19:45,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:45,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:19:45,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:19:45,796 INFO L87 Difference]: Start difference. First operand 26310 states. Second operand 3 states. [2020-10-16 12:19:46,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:46,007 INFO L93 Difference]: Finished difference Result 26310 states and 110676 transitions. [2020-10-16 12:19:46,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:19:46,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-16 12:19:46,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:46,171 INFO L225 Difference]: With dead ends: 26310 [2020-10-16 12:19:46,172 INFO L226 Difference]: Without dead ends: 23184 [2020-10-16 12:19:46,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:19:47,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23184 states. [2020-10-16 12:19:48,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23184 to 23184. [2020-10-16 12:19:48,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23184 states. [2020-10-16 12:19:48,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23184 states to 23184 states and 98175 transitions. [2020-10-16 12:19:48,577 INFO L78 Accepts]: Start accepts. Automaton has 23184 states and 98175 transitions. Word has length 4 [2020-10-16 12:19:48,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:48,578 INFO L481 AbstractCegarLoop]: Abstraction has 23184 states and 98175 transitions. [2020-10-16 12:19:48,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:19:48,578 INFO L276 IsEmpty]: Start isEmpty. Operand 23184 states and 98175 transitions. [2020-10-16 12:19:48,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:19:48,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:48,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:48,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 12:19:48,579 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:48,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:48,579 INFO L82 PathProgramCache]: Analyzing trace with hash 805936127, now seen corresponding path program 1 times [2020-10-16 12:19:48,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:48,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551508823] [2020-10-16 12:19:48,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:48,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 12:19:48,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551508823] [2020-10-16 12:19:48,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:19:48,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:19:48,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261257868] [2020-10-16 12:19:48,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:19:48,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:48,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:19:48,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:19:48,626 INFO L87 Difference]: Start difference. First operand 23184 states and 98175 transitions. Second operand 4 states. [2020-10-16 12:19:48,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:48,822 INFO L93 Difference]: Finished difference Result 24543 states and 99524 transitions. [2020-10-16 12:19:48,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:19:48,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-16 12:19:48,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:48,934 INFO L225 Difference]: With dead ends: 24543 [2020-10-16 12:19:48,935 INFO L226 Difference]: Without dead ends: 24543 [2020-10-16 12:19:48,935 INFO L677 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 [2020-10-16 12:19:49,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24543 states. [2020-10-16 12:19:51,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24543 to 23577. [2020-10-16 12:19:51,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23577 states. [2020-10-16 12:19:51,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23577 states to 23577 states and 96338 transitions. [2020-10-16 12:19:51,370 INFO L78 Accepts]: Start accepts. Automaton has 23577 states and 96338 transitions. Word has length 8 [2020-10-16 12:19:51,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:51,370 INFO L481 AbstractCegarLoop]: Abstraction has 23577 states and 96338 transitions. [2020-10-16 12:19:51,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:19:51,370 INFO L276 IsEmpty]: Start isEmpty. Operand 23577 states and 96338 transitions. [2020-10-16 12:19:51,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 12:19:51,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:51,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:51,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-16 12:19:51,372 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:51,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:51,373 INFO L82 PathProgramCache]: Analyzing trace with hash -447719219, now seen corresponding path program 1 times [2020-10-16 12:19:51,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:51,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760879702] [2020-10-16 12:19:51,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:19:51,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760879702] [2020-10-16 12:19:51,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123566151] [2020-10-16 12:19:51,451 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 [2020-10-16 12:19:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:19:51,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-16 12:19:51,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:19:51,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:19:51,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:19:51,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2020-10-16 12:19:51,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160349827] [2020-10-16 12:19:51,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:19:51,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:19:51,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:19:51,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:19:51,582 INFO L87 Difference]: Start difference. First operand 23577 states and 96338 transitions. Second operand 7 states. [2020-10-16 12:19:51,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:19:51,854 INFO L93 Difference]: Finished difference Result 22356 states and 87745 transitions. [2020-10-16 12:19:51,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:19:51,855 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-16 12:19:51,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:19:51,951 INFO L225 Difference]: With dead ends: 22356 [2020-10-16 12:19:51,951 INFO L226 Difference]: Without dead ends: 22356 [2020-10-16 12:19:51,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:19:52,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22356 states. [2020-10-16 12:19:52,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22356 to 21826. [2020-10-16 12:19:52,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21826 states. [2020-10-16 12:19:53,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21826 states to 21826 states and 86349 transitions. [2020-10-16 12:19:53,098 INFO L78 Accepts]: Start accepts. Automaton has 21826 states and 86349 transitions. Word has length 16 [2020-10-16 12:19:53,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:19:53,098 INFO L481 AbstractCegarLoop]: Abstraction has 21826 states and 86349 transitions. [2020-10-16 12:19:53,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:19:53,098 INFO L276 IsEmpty]: Start isEmpty. Operand 21826 states and 86349 transitions. [2020-10-16 12:19:53,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 12:19:53,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:19:53,105 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:19:53,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-16 12:19:53,321 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:19:53,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:19:53,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1012463302, now seen corresponding path program 1 times [2020-10-16 12:19:53,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:19:53,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919651751] [2020-10-16 12:19:53,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:19:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:19:53,336 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:19:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:19:53,358 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:19:53,366 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:19:53,366 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:19:53,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-16 12:19:53,367 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 12:19:53,369 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 12:19:53,370 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-16 12:19:53,386 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,386 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,386 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,387 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,387 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,387 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,387 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,387 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,387 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,388 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,388 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,388 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,388 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,388 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,388 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,389 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,389 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,389 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,389 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,389 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,389 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,390 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,390 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,390 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,390 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,390 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,390 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,390 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,391 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,391 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,391 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,391 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,391 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,391 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,392 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,392 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,392 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,392 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,392 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,392 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,393 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,393 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,393 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,393 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,393 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,394 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,394 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,395 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,396 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,396 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,396 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,396 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,397 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,397 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,398 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,398 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,398 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,399 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,400 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,400 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,400 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,400 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,401 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,401 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,402 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,402 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,402 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,404 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,404 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,404 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,405 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,405 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:19:53,410 INFO L149 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2020-10-16 12:19:53,410 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-16 12:19:53,411 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:19:53,411 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:19:53,411 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:19:53,411 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:19:53,411 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:19:53,411 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:19:53,411 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:19:53,411 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:19:53,415 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:19:53,415 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 106 transitions, 290 flow [2020-10-16 12:19:53,416 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 106 transitions, 290 flow [2020-10-16 12:19:53,416 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 290 flow [2020-10-16 12:19:53,745 INFO L129 PetriNetUnfolder]: 399/2291 cut-off events. [2020-10-16 12:19:53,746 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2020-10-16 12:19:53,767 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. [2020-10-16 12:19:53,824 INFO L117 LiptonReduction]: Number of co-enabled transitions 3660 [2020-10-16 12:19:55,403 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-16 12:19:55,489 INFO L132 LiptonReduction]: Checked pairs total: 14446 [2020-10-16 12:19:55,489 INFO L134 LiptonReduction]: Total number of compositions: 76 [2020-10-16 12:19:55,489 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 43 transitions, 164 flow [2020-10-16 12:20:34,111 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 127122 states. [2020-10-16 12:20:34,112 INFO L276 IsEmpty]: Start isEmpty. Operand 127122 states. [2020-10-16 12:20:34,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-16 12:20:34,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:34,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-16 12:20:34,112 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:20:34,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:34,113 INFO L82 PathProgramCache]: Analyzing trace with hash 35155697, now seen corresponding path program 1 times [2020-10-16 12:20:34,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:34,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999409591] [2020-10-16 12:20:34,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:34,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:20:34,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999409591] [2020-10-16 12:20:34,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:20:34,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:20:34,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392201864] [2020-10-16 12:20:34,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:20:34,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:34,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:20:34,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:20:34,137 INFO L87 Difference]: Start difference. First operand 127122 states. Second operand 3 states. [2020-10-16 12:20:35,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:35,548 INFO L93 Difference]: Finished difference Result 127122 states and 615398 transitions. [2020-10-16 12:20:35,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:20:35,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-16 12:20:35,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:36,052 INFO L225 Difference]: With dead ends: 127122 [2020-10-16 12:20:36,052 INFO L226 Difference]: Without dead ends: 111496 [2020-10-16 12:20:36,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:20:43,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111496 states. [2020-10-16 12:20:45,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111496 to 111496. [2020-10-16 12:20:45,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111496 states. [2020-10-16 12:20:50,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111496 states to 111496 states and 543522 transitions. [2020-10-16 12:20:50,967 INFO L78 Accepts]: Start accepts. Automaton has 111496 states and 543522 transitions. Word has length 4 [2020-10-16 12:20:50,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:20:50,967 INFO L481 AbstractCegarLoop]: Abstraction has 111496 states and 543522 transitions. [2020-10-16 12:20:50,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:20:50,967 INFO L276 IsEmpty]: Start isEmpty. Operand 111496 states and 543522 transitions. [2020-10-16 12:20:50,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:20:50,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:20:50,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:20:50,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-16 12:20:50,968 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:20:50,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:20:50,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1170285684, now seen corresponding path program 1 times [2020-10-16 12:20:50,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:20:50,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204717252] [2020-10-16 12:20:50,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:20:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:20:51,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 12:20:51,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204717252] [2020-10-16 12:20:51,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:20:51,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:20:51,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913429789] [2020-10-16 12:20:51,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:20:51,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:20:51,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:20:51,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:20:51,008 INFO L87 Difference]: Start difference. First operand 111496 states and 543522 transitions. Second operand 4 states. [2020-10-16 12:20:51,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:20:51,850 INFO L93 Difference]: Finished difference Result 120747 states and 568406 transitions. [2020-10-16 12:20:51,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:20:51,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-16 12:20:51,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:20:58,437 INFO L225 Difference]: With dead ends: 120747 [2020-10-16 12:20:58,438 INFO L226 Difference]: Without dead ends: 120747 [2020-10-16 12:20:58,438 INFO L677 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 [2020-10-16 12:21:00,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120747 states. [2020-10-16 12:21:03,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120747 to 116197. [2020-10-16 12:21:03,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116197 states. [2020-10-16 12:21:04,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116197 states to 116197 states and 549860 transitions. [2020-10-16 12:21:04,369 INFO L78 Accepts]: Start accepts. Automaton has 116197 states and 549860 transitions. Word has length 8 [2020-10-16 12:21:04,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:04,369 INFO L481 AbstractCegarLoop]: Abstraction has 116197 states and 549860 transitions. [2020-10-16 12:21:04,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:21:04,370 INFO L276 IsEmpty]: Start isEmpty. Operand 116197 states and 549860 transitions. [2020-10-16 12:21:04,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 12:21:04,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:04,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:04,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-16 12:21:04,371 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:21:04,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:04,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1082449829, now seen corresponding path program 1 times [2020-10-16 12:21:04,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:04,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687576744] [2020-10-16 12:21:04,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:04,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:21:04,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687576744] [2020-10-16 12:21:04,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272184947] [2020-10-16 12:21:04,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:21:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:04,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-16 12:21:04,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:21:04,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:21:04,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:21:04,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-10-16 12:21:04,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685252997] [2020-10-16 12:21:04,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:21:04,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:04,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:21:04,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:21:04,498 INFO L87 Difference]: Start difference. First operand 116197 states and 549860 transitions. Second operand 6 states. [2020-10-16 12:21:06,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:06,504 INFO L93 Difference]: Finished difference Result 116193 states and 549849 transitions. [2020-10-16 12:21:06,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:21:06,505 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-16 12:21:06,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:07,034 INFO L225 Difference]: With dead ends: 116193 [2020-10-16 12:21:07,034 INFO L226 Difference]: Without dead ends: 116193 [2020-10-16 12:21:07,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:21:10,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116193 states. [2020-10-16 12:21:18,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116193 to 116193. [2020-10-16 12:21:18,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116193 states. [2020-10-16 12:21:20,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116193 states to 116193 states and 549849 transitions. [2020-10-16 12:21:20,044 INFO L78 Accepts]: Start accepts. Automaton has 116193 states and 549849 transitions. Word has length 16 [2020-10-16 12:21:20,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:20,045 INFO L481 AbstractCegarLoop]: Abstraction has 116193 states and 549849 transitions. [2020-10-16 12:21:20,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:21:20,045 INFO L276 IsEmpty]: Start isEmpty. Operand 116193 states and 549849 transitions. [2020-10-16 12:21:20,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-16 12:21:20,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:20,048 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:20,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:21:20,249 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:21:20,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:20,250 INFO L82 PathProgramCache]: Analyzing trace with hash 173719339, now seen corresponding path program 1 times [2020-10-16 12:21:20,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:20,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576881684] [2020-10-16 12:21:20,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:21:20,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576881684] [2020-10-16 12:21:20,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733622937] [2020-10-16 12:21:20,318 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 [2020-10-16 12:21:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:20,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-16 12:21:20,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:21:20,454 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:21:20,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:21:20,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-16 12:21:20,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204217583] [2020-10-16 12:21:20,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:21:20,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:20,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:21:20,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-10-16 12:21:20,458 INFO L87 Difference]: Start difference. First operand 116193 states and 549849 transitions. Second operand 8 states. [2020-10-16 12:21:21,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:21,298 INFO L93 Difference]: Finished difference Result 116177 states and 549793 transitions. [2020-10-16 12:21:21,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:21:21,299 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-16 12:21:21,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:27,637 INFO L225 Difference]: With dead ends: 116177 [2020-10-16 12:21:27,638 INFO L226 Difference]: Without dead ends: 116177 [2020-10-16 12:21:27,638 INFO L677 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 [2020-10-16 12:21:29,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116177 states. [2020-10-16 12:21:32,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116177 to 116177. [2020-10-16 12:21:32,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116177 states. [2020-10-16 12:21:32,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116177 states to 116177 states and 549793 transitions. [2020-10-16 12:21:32,658 INFO L78 Accepts]: Start accepts. Automaton has 116177 states and 549793 transitions. Word has length 20 [2020-10-16 12:21:32,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:32,658 INFO L481 AbstractCegarLoop]: Abstraction has 116177 states and 549793 transitions. [2020-10-16 12:21:32,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:21:32,658 INFO L276 IsEmpty]: Start isEmpty. Operand 116177 states and 549793 transitions. [2020-10-16 12:21:32,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-16 12:21:32,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:32,665 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:32,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:21:32,872 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:21:32,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:32,873 INFO L82 PathProgramCache]: Analyzing trace with hash -999416206, now seen corresponding path program 1 times [2020-10-16 12:21:32,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:32,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819480524] [2020-10-16 12:21:32,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:32,927 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:21:32,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819480524] [2020-10-16 12:21:32,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561975581] [2020-10-16 12:21:32,929 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 [2020-10-16 12:21:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:32,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 12:21:32,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:21:33,039 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:21:33,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:21:33,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 12:21:33,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947393613] [2020-10-16 12:21:33,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:21:33,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:33,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:21:33,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2020-10-16 12:21:33,041 INFO L87 Difference]: Start difference. First operand 116177 states and 549793 transitions. Second operand 10 states. [2020-10-16 12:21:34,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:34,915 INFO L93 Difference]: Finished difference Result 116113 states and 549521 transitions. [2020-10-16 12:21:34,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:21:34,915 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-16 12:21:34,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:35,362 INFO L225 Difference]: With dead ends: 116113 [2020-10-16 12:21:35,362 INFO L226 Difference]: Without dead ends: 116113 [2020-10-16 12:21:35,362 INFO L677 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 [2020-10-16 12:21:43,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116113 states. [2020-10-16 12:21:45,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116113 to 116113. [2020-10-16 12:21:45,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116113 states. [2020-10-16 12:21:45,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116113 states to 116113 states and 549521 transitions. [2020-10-16 12:21:45,707 INFO L78 Accepts]: Start accepts. Automaton has 116113 states and 549521 transitions. Word has length 24 [2020-10-16 12:21:45,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:45,708 INFO L481 AbstractCegarLoop]: Abstraction has 116113 states and 549521 transitions. [2020-10-16 12:21:45,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:21:45,708 INFO L276 IsEmpty]: Start isEmpty. Operand 116113 states and 549521 transitions. [2020-10-16 12:21:45,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-16 12:21:45,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:45,727 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:45,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-16 12:21:45,941 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:21:45,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:45,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1963695170, now seen corresponding path program 1 times [2020-10-16 12:21:45,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:45,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790153154] [2020-10-16 12:21:45,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:21:45,961 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:21:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:21:45,971 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:21:45,979 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:21:45,979 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:21:45,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-16 12:21:45,979 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 12:21:45,980 WARN L371 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 12:21:45,980 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-10-16 12:21:45,990 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,990 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,990 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,990 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,991 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,991 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,991 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,991 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,991 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,991 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,991 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,992 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,992 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,992 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,992 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,992 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,992 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,992 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,993 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,993 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,993 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,993 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,993 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,993 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,994 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,994 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,994 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,994 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,994 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,994 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,995 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,995 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,995 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,995 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,995 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,995 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,996 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,996 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,996 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,996 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,996 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,996 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,996 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,997 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,997 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,997 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,997 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,997 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,997 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,998 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,998 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,998 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,998 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:45,998 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,000 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,000 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,000 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,000 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,000 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,002 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,002 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,002 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,002 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,002 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,004 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,004 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,004 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,004 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,004 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,006 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,006 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,006 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,006 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,006 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,007 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,008 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,008 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,008 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,008 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,009 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,010 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,010 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,010 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,010 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:46,016 INFO L149 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2020-10-16 12:21:46,016 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-16 12:21:46,016 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:21:46,016 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:21:46,017 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:21:46,017 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:21:46,017 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:21:46,017 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:21:46,017 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:21:46,017 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:21:46,018 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:21:46,019 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 113 transitions, 324 flow [2020-10-16 12:21:46,019 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 113 transitions, 324 flow [2020-10-16 12:21:46,019 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 115 places, 113 transitions, 324 flow [2020-10-16 12:21:47,607 INFO L129 PetriNetUnfolder]: 849/4546 cut-off events. [2020-10-16 12:21:47,607 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2020-10-16 12:21:47,638 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. [2020-10-16 12:21:47,766 INFO L117 LiptonReduction]: Number of co-enabled transitions 4550 [2020-10-16 12:21:49,208 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-16 12:21:49,301 INFO L132 LiptonReduction]: Checked pairs total: 19547 [2020-10-16 12:21:49,301 INFO L134 LiptonReduction]: Total number of compositions: 80 [2020-10-16 12:21:49,301 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 48 transitions, 194 flow Received shutdown request... [2020-10-16 12:23:15,715 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 12:23:15,717 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 12:23:15,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:23:15 BasicIcfg [2020-10-16 12:23:15,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:23:15,719 INFO L168 Benchmark]: Toolchain (without parser) took 225662.01 ms. Allocated memory was 141.0 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 101.6 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2020-10-16 12:23:15,720 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 12:23:15,720 INFO L168 Benchmark]: CACSL2BoogieTranslator took 830.28 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 101.4 MB in the beginning and 163.7 MB in the end (delta: -62.3 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-10-16 12:23:15,721 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.35 ms. Allocated memory is still 204.5 MB. Free memory was 163.7 MB in the beginning and 161.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 12:23:15,721 INFO L168 Benchmark]: Boogie Preprocessor took 35.75 ms. Allocated memory is still 204.5 MB. Free memory was 161.8 MB in the beginning and 159.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 12:23:15,722 INFO L168 Benchmark]: RCFGBuilder took 474.15 ms. Allocated memory is still 204.5 MB. Free memory was 159.9 MB in the beginning and 137.3 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-10-16 12:23:15,723 INFO L168 Benchmark]: TraceAbstraction took 224260.06 ms. Allocated memory was 204.5 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 136.7 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2020-10-16 12:23:15,726 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 830.28 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 101.4 MB in the beginning and 163.7 MB in the end (delta: -62.3 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.35 ms. Allocated memory is still 204.5 MB. Free memory was 163.7 MB in the beginning and 161.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.75 ms. Allocated memory is still 204.5 MB. Free memory was 161.8 MB in the beginning and 159.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 474.15 ms. Allocated memory is still 204.5 MB. Free memory was 159.9 MB in the beginning and 137.3 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224260.06 ms. Allocated memory was 204.5 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 136.7 MB in the beginning and 1.2 GB in the end (delta: -1.1 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 195 VarBasedMoverChecksPositive, 10 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 7 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 67 PlacesBefore, 15 PlacesAfterwards, 71 TransitionsBefore, 14 TransitionsAfterwards, 370 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 71 TotalNumberOfCompositions, 397 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 477 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 76 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 75 PlacesBefore, 25 PlacesAfterwards, 78 TransitionsBefore, 23 TransitionsAfterwards, 900 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 67 TotalNumberOfCompositions, 2415 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 800 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 91 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 83 PlacesBefore, 31 PlacesAfterwards, 85 TransitionsBefore, 28 TransitionsAfterwards, 1470 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 73 TotalNumberOfCompositions, 4432 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 940 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 106 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 91 PlacesBefore, 37 PlacesAfterwards, 92 TransitionsBefore, 33 TransitionsAfterwards, 2120 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 12 ConcurrentYvCompositions, 5 ChoiceCompositions, 73 TotalNumberOfCompositions, 7163 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1531 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 288 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 99 PlacesBefore, 43 PlacesAfterwards, 99 TransitionsBefore, 38 TransitionsAfterwards, 2850 CoEnabledTransitionPairs, 5 FixpointIterations, 23 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 75 TotalNumberOfCompositions, 9531 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1576 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 186 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 107 PlacesBefore, 49 PlacesAfterwards, 106 TransitionsBefore, 43 TransitionsAfterwards, 3660 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 9 ConcurrentYvCompositions, 5 ChoiceCompositions, 76 TotalNumberOfCompositions, 14446 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2297 VarBasedMoverChecksPositive, 46 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 510 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.2s, 115 PlacesBefore, 55 PlacesAfterwards, 113 TransitionsBefore, 48 TransitionsAfterwards, 4550 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 80 TotalNumberOfCompositions, 19547 MoverChecksTotal - 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 197898 states. Currently 32404 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 64 locations, 1 error locations. Started 7 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 223.9s, OverallIterations: 22, TraceHistogramMax: 7, AutomataDifference: 23.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 141.4s, HoareTripleCheckerStatistics: 542 SDtfs, 600 SDslu, 663 SDs, 0 SdLazy, 270 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 132 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s 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: 56.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 6288 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 349 NumberOfCodeBlocks, 349 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 227 ConstructedInterpolants, 0 QuantifiedInterpolants, 14251 SizeOfPredicates, 5 NumberOfNonLiveVariables, 478 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 21 InterpolantComputations, 11 PerfectInterpolantSequences, 25/73 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