/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 21:37:22,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 21:37:22,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 21:37:22,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 21:37:22,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 21:37:22,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 21:37:22,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 21:37:22,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 21:37:22,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 21:37:22,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 21:37:22,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 21:37:22,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 21:37:22,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 21:37:22,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 21:37:22,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 21:37:22,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 21:37:22,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 21:37:22,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 21:37:22,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 21:37:22,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 21:37:22,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 21:37:22,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 21:37:22,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 21:37:22,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 21:37:22,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 21:37:22,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 21:37:22,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 21:37:22,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 21:37:22,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 21:37:22,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 21:37:22,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 21:37:22,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 21:37:22,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 21:37:22,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 21:37:22,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 21:37:22,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 21:37:22,718 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-10-15 21:37:22,740 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 21:37:22,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 21:37:22,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 21:37:22,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 21:37:22,742 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 21:37:22,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 21:37:22,742 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 21:37:22,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 21:37:22,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 21:37:22,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 21:37:22,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 21:37:22,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 21:37:22,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 21:37:22,744 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 21:37:22,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 21:37:22,744 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 21:37:22,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 21:37:22,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 21:37:22,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 21:37:22,745 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 21:37:22,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 21:37:22,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 21:37:22,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 21:37:22,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 21:37:22,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 21:37:22,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 21:37:22,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 21:37:22,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 21:37:22,747 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 21:37:23,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 21:37:23,037 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 21:37:23,040 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 21:37:23,041 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 21:37:23,042 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 21:37:23,043 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2020-10-15 21:37:23,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2106e31e6/08f3a2a35af041b8aa4f6b0a0d6ac58c/FLAG1c6a032d2 [2020-10-15 21:37:23,613 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 21:37:23,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2020-10-15 21:37:23,632 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2106e31e6/08f3a2a35af041b8aa4f6b0a0d6ac58c/FLAG1c6a032d2 [2020-10-15 21:37:23,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2106e31e6/08f3a2a35af041b8aa4f6b0a0d6ac58c [2020-10-15 21:37:23,999 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 21:37:24,001 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 21:37:24,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 21:37:24,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 21:37:24,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 21:37:24,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:37:23" (1/1) ... [2020-10-15 21:37:24,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2563fb5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:37:24, skipping insertion in model container [2020-10-15 21:37:24,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:37:23" (1/1) ... [2020-10-15 21:37:24,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 21:37:24,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 21:37:24,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 21:37:24,535 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 21:37:24,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 21:37:24,673 INFO L208 MainTranslator]: Completed translation [2020-10-15 21:37:24,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:37:24 WrapperNode [2020-10-15 21:37:24,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 21:37:24,674 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 21:37:24,674 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 21:37:24,674 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 21:37:24,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:37:24" (1/1) ... [2020-10-15 21:37:24,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:37:24" (1/1) ... [2020-10-15 21:37:24,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 21:37:24,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 21:37:24,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 21:37:24,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 21:37:24,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:37:24" (1/1) ... [2020-10-15 21:37:24,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:37:24" (1/1) ... [2020-10-15 21:37:24,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:37:24" (1/1) ... [2020-10-15 21:37:24,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:37:24" (1/1) ... [2020-10-15 21:37:24,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:37:24" (1/1) ... [2020-10-15 21:37:24,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:37:24" (1/1) ... [2020-10-15 21:37:24,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:37:24" (1/1) ... [2020-10-15 21:37:24,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 21:37:24,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 21:37:24,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 21:37:24,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 21:37:24,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:37:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 21:37:24,810 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-15 21:37:24,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-15 21:37:24,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 21:37:24,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 21:37:24,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 21:37:24,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 21:37:24,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 21:37:24,813 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 21:37:25,096 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 21:37:25,096 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-15 21:37:25,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:37:25 BoogieIcfgContainer [2020-10-15 21:37:25,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 21:37:25,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 21:37:25,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 21:37:25,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 21:37:25,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 09:37:23" (1/3) ... [2020-10-15 21:37:25,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42883c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:37:25, skipping insertion in model container [2020-10-15 21:37:25,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:37:24" (2/3) ... [2020-10-15 21:37:25,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42883c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:37:25, skipping insertion in model container [2020-10-15 21:37:25,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:37:25" (3/3) ... [2020-10-15 21:37:25,106 INFO L111 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs.i [2020-10-15 21:37:25,118 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 21:37:25,118 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 21:37:25,126 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 21:37:25,127 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 21:37:25,148 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:25,148 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:25,149 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:25,149 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:25,150 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:25,150 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:25,153 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:25,154 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:25,154 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:25,154 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:25,178 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-15 21:37:25,199 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 21:37:25,199 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 21:37:25,199 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 21:37:25,199 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 21:37:25,199 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 21:37:25,200 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 21:37:25,200 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 21:37:25,200 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 21:37:25,210 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 21:37:25,212 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 28 transitions, 61 flow [2020-10-15 21:37:25,214 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 28 transitions, 61 flow [2020-10-15 21:37:25,216 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 61 flow [2020-10-15 21:37:25,247 INFO L129 PetriNetUnfolder]: 3/36 cut-off events. [2020-10-15 21:37:25,248 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 21:37:25,252 INFO L80 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 36 events. 3/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 18. Up to 4 conditions per place. [2020-10-15 21:37:25,254 INFO L117 LiptonReduction]: Number of co-enabled transitions 180 [2020-10-15 21:37:25,753 INFO L132 LiptonReduction]: Checked pairs total: 146 [2020-10-15 21:37:25,753 INFO L134 LiptonReduction]: Total number of compositions: 24 [2020-10-15 21:37:25,761 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 11 places, 8 transitions, 21 flow [2020-10-15 21:37:25,770 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 19 states. [2020-10-15 21:37:25,772 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-15 21:37:25,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 21:37:25,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 21:37:25,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 21:37:25,780 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 21:37:25,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 21:37:25,786 INFO L82 PathProgramCache]: Analyzing trace with hash 4107967, now seen corresponding path program 1 times [2020-10-15 21:37:25,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 21:37:25,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230883494] [2020-10-15 21:37:25,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 21:37:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 21:37:25,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 21:37:25,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230883494] [2020-10-15 21:37:25,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 21:37:25,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 21:37:25,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446193886] [2020-10-15 21:37:25,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 21:37:25,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 21:37:26,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 21:37:26,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 21:37:26,008 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-10-15 21:37:26,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 21:37:26,029 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-10-15 21:37:26,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 21:37:26,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 21:37:26,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 21:37:26,041 INFO L225 Difference]: With dead ends: 11 [2020-10-15 21:37:26,041 INFO L226 Difference]: Without dead ends: 11 [2020-10-15 21:37:26,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 21:37:26,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-15 21:37:26,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-15 21:37:26,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-15 21:37:26,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-10-15 21:37:26,076 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2020-10-15 21:37:26,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 21:37:26,077 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-10-15 21:37:26,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 21:37:26,077 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-10-15 21:37:26,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-15 21:37:26,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 21:37:26,078 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-10-15 21:37:26,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 21:37:26,078 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 21:37:26,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 21:37:26,079 INFO L82 PathProgramCache]: Analyzing trace with hash -347254361, now seen corresponding path program 1 times [2020-10-15 21:37:26,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 21:37:26,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571813583] [2020-10-15 21:37:26,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 21:37:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 21:37:26,102 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 21:37:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 21:37:26,126 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 21:37:26,148 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 21:37:26,148 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 21:37:26,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 21:37:26,151 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 21:37:26,151 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-15 21:37:26,157 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,158 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,158 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,158 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,159 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,159 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,159 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,160 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,160 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,160 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,160 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,161 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,161 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,161 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,162 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,162 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,168 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,168 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,168 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,168 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,170 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 21:37:26,171 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 21:37:26,171 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 21:37:26,171 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 21:37:26,171 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 21:37:26,171 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 21:37:26,171 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 21:37:26,172 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 21:37:26,172 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 21:37:26,174 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 21:37:26,174 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 38 transitions, 88 flow [2020-10-15 21:37:26,175 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 38 transitions, 88 flow [2020-10-15 21:37:26,175 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 40 places, 38 transitions, 88 flow [2020-10-15 21:37:26,203 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-15 21:37:26,203 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-15 21:37:26,205 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 5/55 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 37. Up to 6 conditions per place. [2020-10-15 21:37:26,207 INFO L117 LiptonReduction]: Number of co-enabled transitions 540 [2020-10-15 21:37:26,719 INFO L132 LiptonReduction]: Checked pairs total: 955 [2020-10-15 21:37:26,719 INFO L134 LiptonReduction]: Total number of compositions: 31 [2020-10-15 21:37:26,720 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 44 flow [2020-10-15 21:37:26,729 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 149 states. [2020-10-15 21:37:26,729 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2020-10-15 21:37:26,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 21:37:26,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 21:37:26,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 21:37:26,730 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 21:37:26,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 21:37:26,730 INFO L82 PathProgramCache]: Analyzing trace with hash 6531966, now seen corresponding path program 1 times [2020-10-15 21:37:26,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 21:37:26,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79775370] [2020-10-15 21:37:26,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 21:37:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 21:37:26,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 21:37:26,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79775370] [2020-10-15 21:37:26,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 21:37:26,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 21:37:26,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166817017] [2020-10-15 21:37:26,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 21:37:26,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 21:37:26,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 21:37:26,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 21:37:26,794 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 3 states. [2020-10-15 21:37:26,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 21:37:26,830 INFO L93 Difference]: Finished difference Result 87 states and 182 transitions. [2020-10-15 21:37:26,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 21:37:26,831 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 21:37:26,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 21:37:26,835 INFO L225 Difference]: With dead ends: 87 [2020-10-15 21:37:26,835 INFO L226 Difference]: Without dead ends: 87 [2020-10-15 21:37:26,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 21:37:26,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-15 21:37:26,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-15 21:37:26,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-15 21:37:26,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 182 transitions. [2020-10-15 21:37:26,855 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 182 transitions. Word has length 4 [2020-10-15 21:37:26,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 21:37:26,855 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 182 transitions. [2020-10-15 21:37:26,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 21:37:26,856 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 182 transitions. [2020-10-15 21:37:26,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 21:37:26,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 21:37:26,857 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2020-10-15 21:37:26,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 21:37:26,857 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 21:37:26,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 21:37:26,858 INFO L82 PathProgramCache]: Analyzing trace with hash 83161709, now seen corresponding path program 1 times [2020-10-15 21:37:26,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 21:37:26,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118522945] [2020-10-15 21:37:26,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 21:37:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 21:37:26,873 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 21:37:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 21:37:26,886 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 21:37:26,891 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 21:37:26,891 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 21:37:26,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 21:37:26,892 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 21:37:26,893 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-15 21:37:26,900 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,900 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,900 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,900 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,902 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,902 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,904 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,905 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,907 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,908 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,908 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,908 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,909 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,910 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,910 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,910 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:26,912 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-15 21:37:26,912 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 21:37:26,912 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 21:37:26,912 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 21:37:26,913 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 21:37:26,913 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 21:37:26,913 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 21:37:26,913 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 21:37:26,913 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 21:37:26,915 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 21:37:26,915 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 48 transitions, 117 flow [2020-10-15 21:37:26,915 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 48 transitions, 117 flow [2020-10-15 21:37:26,916 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 51 places, 48 transitions, 117 flow [2020-10-15 21:37:26,931 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2020-10-15 21:37:26,931 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-15 21:37:26,932 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 74 events. 7/74 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 59. Up to 8 conditions per place. [2020-10-15 21:37:26,935 INFO L117 LiptonReduction]: Number of co-enabled transitions 1080 [2020-10-15 21:37:27,599 INFO L132 LiptonReduction]: Checked pairs total: 2823 [2020-10-15 21:37:27,600 INFO L134 LiptonReduction]: Total number of compositions: 42 [2020-10-15 21:37:27,600 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 23 transitions, 67 flow [2020-10-15 21:37:27,638 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 749 states. [2020-10-15 21:37:27,639 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states. [2020-10-15 21:37:27,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 21:37:27,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 21:37:27,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 21:37:27,640 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 21:37:27,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 21:37:27,641 INFO L82 PathProgramCache]: Analyzing trace with hash 9457192, now seen corresponding path program 1 times [2020-10-15 21:37:27,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 21:37:27,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760140121] [2020-10-15 21:37:27,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 21:37:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 21:37:27,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 21:37:27,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760140121] [2020-10-15 21:37:27,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 21:37:27,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 21:37:27,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624826094] [2020-10-15 21:37:27,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 21:37:27,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 21:37:27,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 21:37:27,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 21:37:27,689 INFO L87 Difference]: Start difference. First operand 749 states. Second operand 3 states. [2020-10-15 21:37:27,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 21:37:27,732 INFO L93 Difference]: Finished difference Result 421 states and 1176 transitions. [2020-10-15 21:37:27,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 21:37:27,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 21:37:27,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 21:37:27,741 INFO L225 Difference]: With dead ends: 421 [2020-10-15 21:37:27,741 INFO L226 Difference]: Without dead ends: 421 [2020-10-15 21:37:27,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 21:37:27,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-10-15 21:37:27,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2020-10-15 21:37:27,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-10-15 21:37:27,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 1176 transitions. [2020-10-15 21:37:27,790 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 1176 transitions. Word has length 4 [2020-10-15 21:37:27,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 21:37:27,791 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 1176 transitions. [2020-10-15 21:37:27,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 21:37:27,791 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 1176 transitions. [2020-10-15 21:37:27,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 21:37:27,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 21:37:27,792 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 21:37:27,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 21:37:27,792 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 21:37:27,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 21:37:27,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1631208808, now seen corresponding path program 1 times [2020-10-15 21:37:27,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 21:37:27,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534745812] [2020-10-15 21:37:27,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 21:37:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 21:37:27,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 21:37:27,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534745812] [2020-10-15 21:37:27,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 21:37:27,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 21:37:27,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564190069] [2020-10-15 21:37:27,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 21:37:27,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 21:37:27,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 21:37:27,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 21:37:27,842 INFO L87 Difference]: Start difference. First operand 421 states and 1176 transitions. Second operand 3 states. [2020-10-15 21:37:27,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 21:37:27,867 INFO L93 Difference]: Finished difference Result 319 states and 912 transitions. [2020-10-15 21:37:27,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 21:37:27,868 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-15 21:37:27,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 21:37:27,871 INFO L225 Difference]: With dead ends: 319 [2020-10-15 21:37:27,871 INFO L226 Difference]: Without dead ends: 319 [2020-10-15 21:37:27,872 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 [2020-10-15 21:37:27,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-15 21:37:27,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2020-10-15 21:37:27,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-15 21:37:27,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 912 transitions. [2020-10-15 21:37:27,892 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 912 transitions. Word has length 10 [2020-10-15 21:37:27,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 21:37:27,892 INFO L481 AbstractCegarLoop]: Abstraction has 319 states and 912 transitions. [2020-10-15 21:37:27,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 21:37:27,893 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 912 transitions. [2020-10-15 21:37:27,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 21:37:27,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 21:37:27,894 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-10-15 21:37:27,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 21:37:27,895 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 21:37:27,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 21:37:27,895 INFO L82 PathProgramCache]: Analyzing trace with hash -274399323, now seen corresponding path program 1 times [2020-10-15 21:37:27,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 21:37:27,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243130026] [2020-10-15 21:37:27,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 21:37:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 21:37:27,910 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 21:37:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 21:37:27,920 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 21:37:27,925 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 21:37:27,925 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 21:37:27,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 21:37:27,926 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 21:37:27,926 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-15 21:37:27,932 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,932 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,932 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,933 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,933 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,933 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,933 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,933 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,934 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,934 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,934 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,934 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,934 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,935 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,935 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,935 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,935 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,935 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,936 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,936 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,936 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,936 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,937 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,937 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,940 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,940 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,941 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,941 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,942 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,943 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,943 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,943 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,944 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,944 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,944 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,945 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,946 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,946 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,946 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,946 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:27,947 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-15 21:37:27,948 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 21:37:27,948 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 21:37:27,948 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 21:37:27,948 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 21:37:27,948 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 21:37:27,948 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 21:37:27,948 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 21:37:27,948 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 21:37:27,950 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 21:37:27,950 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 58 transitions, 148 flow [2020-10-15 21:37:27,950 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 58 transitions, 148 flow [2020-10-15 21:37:27,950 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 148 flow [2020-10-15 21:37:27,966 INFO L129 PetriNetUnfolder]: 9/93 cut-off events. [2020-10-15 21:37:27,967 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-15 21:37:27,968 INFO L80 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 93 events. 9/93 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 209 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 83. Up to 10 conditions per place. [2020-10-15 21:37:27,971 INFO L117 LiptonReduction]: Number of co-enabled transitions 1800 [2020-10-15 21:37:28,984 INFO L132 LiptonReduction]: Checked pairs total: 4061 [2020-10-15 21:37:28,984 INFO L134 LiptonReduction]: Total number of compositions: 49 [2020-10-15 21:37:28,985 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 28 transitions, 88 flow [2020-10-15 21:37:29,219 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 3749 states. [2020-10-15 21:37:29,220 INFO L276 IsEmpty]: Start isEmpty. Operand 3749 states. [2020-10-15 21:37:29,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 21:37:29,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 21:37:29,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 21:37:29,221 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 21:37:29,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 21:37:29,221 INFO L82 PathProgramCache]: Analyzing trace with hash 13119213, now seen corresponding path program 1 times [2020-10-15 21:37:29,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 21:37:29,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235515028] [2020-10-15 21:37:29,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 21:37:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 21:37:29,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 21:37:29,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235515028] [2020-10-15 21:37:29,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 21:37:29,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 21:37:29,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635159434] [2020-10-15 21:37:29,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 21:37:29,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 21:37:29,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 21:37:29,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 21:37:29,267 INFO L87 Difference]: Start difference. First operand 3749 states. Second operand 3 states. [2020-10-15 21:37:29,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 21:37:29,338 INFO L93 Difference]: Finished difference Result 2133 states and 7537 transitions. [2020-10-15 21:37:29,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 21:37:29,338 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 21:37:29,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 21:37:29,361 INFO L225 Difference]: With dead ends: 2133 [2020-10-15 21:37:29,361 INFO L226 Difference]: Without dead ends: 2133 [2020-10-15 21:37:29,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 21:37:29,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2133 states. [2020-10-15 21:37:29,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2133 to 2133. [2020-10-15 21:37:29,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2133 states. [2020-10-15 21:37:29,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2133 states to 2133 states and 7537 transitions. [2020-10-15 21:37:29,509 INFO L78 Accepts]: Start accepts. Automaton has 2133 states and 7537 transitions. Word has length 4 [2020-10-15 21:37:29,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 21:37:29,509 INFO L481 AbstractCegarLoop]: Abstraction has 2133 states and 7537 transitions. [2020-10-15 21:37:29,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 21:37:29,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2133 states and 7537 transitions. [2020-10-15 21:37:29,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 21:37:29,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 21:37:29,511 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 21:37:29,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 21:37:29,512 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 21:37:29,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 21:37:29,512 INFO L82 PathProgramCache]: Analyzing trace with hash 660270625, now seen corresponding path program 1 times [2020-10-15 21:37:29,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 21:37:29,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795448402] [2020-10-15 21:37:29,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 21:37:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 21:37:29,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 21:37:29,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795448402] [2020-10-15 21:37:29,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 21:37:29,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 21:37:29,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123424003] [2020-10-15 21:37:29,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 21:37:29,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 21:37:29,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 21:37:29,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 21:37:29,575 INFO L87 Difference]: Start difference. First operand 2133 states and 7537 transitions. Second operand 3 states. [2020-10-15 21:37:29,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 21:37:29,611 INFO L93 Difference]: Finished difference Result 1279 states and 4608 transitions. [2020-10-15 21:37:29,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 21:37:29,612 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-15 21:37:29,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 21:37:29,622 INFO L225 Difference]: With dead ends: 1279 [2020-10-15 21:37:29,622 INFO L226 Difference]: Without dead ends: 1279 [2020-10-15 21:37:29,623 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 [2020-10-15 21:37:29,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2020-10-15 21:37:29,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1279. [2020-10-15 21:37:29,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-10-15 21:37:29,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 4608 transitions. [2020-10-15 21:37:29,669 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 4608 transitions. Word has length 10 [2020-10-15 21:37:29,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 21:37:29,670 INFO L481 AbstractCegarLoop]: Abstraction has 1279 states and 4608 transitions. [2020-10-15 21:37:29,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 21:37:29,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 4608 transitions. [2020-10-15 21:37:29,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 21:37:29,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 21:37:29,673 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-10-15 21:37:29,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 21:37:29,674 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 21:37:29,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 21:37:29,674 INFO L82 PathProgramCache]: Analyzing trace with hash -888053295, now seen corresponding path program 1 times [2020-10-15 21:37:29,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 21:37:29,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129125345] [2020-10-15 21:37:29,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 21:37:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 21:37:29,685 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 21:37:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 21:37:29,693 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 21:37:29,698 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 21:37:29,699 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 21:37:29,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 21:37:29,699 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 21:37:29,700 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-15 21:37:29,712 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,713 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,713 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,713 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,713 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,713 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,714 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,716 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,716 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,716 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,717 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,717 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,717 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,718 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,718 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,718 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,718 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,718 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,718 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,719 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,719 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,720 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,721 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,721 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,721 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,721 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,722 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,722 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,723 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,723 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,723 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,723 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,723 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,732 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,734 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,736 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,737 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,737 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:29,739 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-15 21:37:29,739 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 21:37:29,739 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 21:37:29,739 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 21:37:29,739 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 21:37:29,739 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 21:37:29,740 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 21:37:29,740 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 21:37:29,740 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 21:37:29,744 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 21:37:29,744 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 68 transitions, 181 flow [2020-10-15 21:37:29,744 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 68 transitions, 181 flow [2020-10-15 21:37:29,745 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 181 flow [2020-10-15 21:37:29,771 INFO L129 PetriNetUnfolder]: 11/112 cut-off events. [2020-10-15 21:37:29,771 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-15 21:37:29,774 INFO L80 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 112 events. 11/112 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 265 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 109. Up to 12 conditions per place. [2020-10-15 21:37:29,778 INFO L117 LiptonReduction]: Number of co-enabled transitions 2700 [2020-10-15 21:37:31,195 INFO L132 LiptonReduction]: Checked pairs total: 7413 [2020-10-15 21:37:31,196 INFO L134 LiptonReduction]: Total number of compositions: 60 [2020-10-15 21:37:31,196 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 35 transitions, 115 flow [2020-10-15 21:37:33,571 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18749 states. [2020-10-15 21:37:33,571 INFO L276 IsEmpty]: Start isEmpty. Operand 18749 states. [2020-10-15 21:37:33,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 21:37:33,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 21:37:33,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 21:37:33,572 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 21:37:33,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 21:37:33,572 INFO L82 PathProgramCache]: Analyzing trace with hash 17094107, now seen corresponding path program 1 times [2020-10-15 21:37:33,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 21:37:33,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127862051] [2020-10-15 21:37:33,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 21:37:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 21:37:33,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 21:37:33,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127862051] [2020-10-15 21:37:33,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 21:37:33,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 21:37:33,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075507182] [2020-10-15 21:37:33,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 21:37:33,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 21:37:33,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 21:37:33,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 21:37:33,640 INFO L87 Difference]: Start difference. First operand 18749 states. Second operand 3 states. [2020-10-15 21:37:33,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 21:37:33,795 INFO L93 Difference]: Finished difference Result 11059 states and 47649 transitions. [2020-10-15 21:37:33,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 21:37:33,796 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 21:37:33,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 21:37:33,896 INFO L225 Difference]: With dead ends: 11059 [2020-10-15 21:37:33,896 INFO L226 Difference]: Without dead ends: 11059 [2020-10-15 21:37:33,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 21:37:34,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11059 states. [2020-10-15 21:37:34,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11059 to 11059. [2020-10-15 21:37:34,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11059 states. [2020-10-15 21:37:34,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11059 states to 11059 states and 47649 transitions. [2020-10-15 21:37:34,658 INFO L78 Accepts]: Start accepts. Automaton has 11059 states and 47649 transitions. Word has length 4 [2020-10-15 21:37:34,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 21:37:34,658 INFO L481 AbstractCegarLoop]: Abstraction has 11059 states and 47649 transitions. [2020-10-15 21:37:34,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 21:37:34,658 INFO L276 IsEmpty]: Start isEmpty. Operand 11059 states and 47649 transitions. [2020-10-15 21:37:34,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 21:37:34,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 21:37:34,661 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 21:37:34,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 21:37:34,662 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 21:37:34,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 21:37:34,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1998237469, now seen corresponding path program 1 times [2020-10-15 21:37:34,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 21:37:34,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311981078] [2020-10-15 21:37:34,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 21:37:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 21:37:34,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 21:37:34,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311981078] [2020-10-15 21:37:34,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 21:37:34,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 21:37:34,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096672728] [2020-10-15 21:37:34,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 21:37:34,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 21:37:34,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 21:37:34,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 21:37:34,695 INFO L87 Difference]: Start difference. First operand 11059 states and 47649 transitions. Second operand 3 states. [2020-10-15 21:37:34,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 21:37:34,776 INFO L93 Difference]: Finished difference Result 5119 states and 22272 transitions. [2020-10-15 21:37:34,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 21:37:34,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-15 21:37:34,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 21:37:34,805 INFO L225 Difference]: With dead ends: 5119 [2020-10-15 21:37:34,805 INFO L226 Difference]: Without dead ends: 5119 [2020-10-15 21:37:34,806 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 [2020-10-15 21:37:34,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5119 states. [2020-10-15 21:37:35,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5119 to 5119. [2020-10-15 21:37:35,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5119 states. [2020-10-15 21:37:35,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 22272 transitions. [2020-10-15 21:37:35,257 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 22272 transitions. Word has length 10 [2020-10-15 21:37:35,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 21:37:35,257 INFO L481 AbstractCegarLoop]: Abstraction has 5119 states and 22272 transitions. [2020-10-15 21:37:35,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 21:37:35,257 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 22272 transitions. [2020-10-15 21:37:35,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-15 21:37:35,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 21:37:35,261 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 21:37:35,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 21:37:35,262 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 21:37:35,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 21:37:35,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1270266075, now seen corresponding path program 1 times [2020-10-15 21:37:35,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 21:37:35,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027997452] [2020-10-15 21:37:35,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 21:37:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 21:37:35,288 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 21:37:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 21:37:35,299 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 21:37:35,305 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 21:37:35,305 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 21:37:35,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 21:37:35,306 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 21:37:35,306 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-15 21:37:35,313 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,313 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,314 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,314 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,314 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,314 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,314 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,315 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,315 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,315 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,315 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,315 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,316 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,316 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,316 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,316 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,316 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,316 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,317 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,317 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,317 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,317 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,317 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,318 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,318 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,318 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,318 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,318 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,318 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,319 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,319 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,319 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,319 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,319 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,320 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,320 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,320 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,320 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,320 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,321 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,323 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,323 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,323 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,323 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,325 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,325 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,325 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,325 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,327 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,327 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,327 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,327 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,329 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,329 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,329 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,329 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,331 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,331 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,331 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,331 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:37:35,333 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-15 21:37:35,333 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 21:37:35,333 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 21:37:35,333 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 21:37:35,333 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 21:37:35,333 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 21:37:35,334 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 21:37:35,334 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 21:37:35,334 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 21:37:35,335 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 21:37:35,335 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 78 transitions, 216 flow [2020-10-15 21:37:35,336 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 78 transitions, 216 flow [2020-10-15 21:37:35,336 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 78 transitions, 216 flow [2020-10-15 21:37:35,353 INFO L129 PetriNetUnfolder]: 13/131 cut-off events. [2020-10-15 21:37:35,353 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-15 21:37:35,355 INFO L80 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 131 events. 13/131 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 328 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 136. Up to 14 conditions per place. [2020-10-15 21:37:35,360 INFO L117 LiptonReduction]: Number of co-enabled transitions 3780 [2020-10-15 21:37:37,058 INFO L132 LiptonReduction]: Checked pairs total: 8748 [2020-10-15 21:37:37,058 INFO L134 LiptonReduction]: Total number of compositions: 66 [2020-10-15 21:37:37,058 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 39 transitions, 138 flow [2020-10-15 21:38:09,506 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 93749 states. [2020-10-15 21:38:09,506 INFO L276 IsEmpty]: Start isEmpty. Operand 93749 states. [2020-10-15 21:38:09,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 21:38:09,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 21:38:09,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 21:38:09,507 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 21:38:09,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 21:38:09,507 INFO L82 PathProgramCache]: Analyzing trace with hash 22149830, now seen corresponding path program 1 times [2020-10-15 21:38:09,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 21:38:09,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345115313] [2020-10-15 21:38:09,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 21:38:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 21:38:09,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 21:38:09,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345115313] [2020-10-15 21:38:09,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 21:38:09,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 21:38:09,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690485221] [2020-10-15 21:38:09,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 21:38:09,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 21:38:09,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 21:38:09,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 21:38:09,542 INFO L87 Difference]: Start difference. First operand 93749 states. Second operand 3 states. [2020-10-15 21:38:10,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 21:38:10,012 INFO L93 Difference]: Finished difference Result 57747 states and 295020 transitions. [2020-10-15 21:38:10,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 21:38:10,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 21:38:10,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 21:38:10,309 INFO L225 Difference]: With dead ends: 57747 [2020-10-15 21:38:10,309 INFO L226 Difference]: Without dead ends: 57747 [2020-10-15 21:38:10,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 21:38:17,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57747 states. [2020-10-15 21:38:18,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57747 to 57747. [2020-10-15 21:38:18,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57747 states. [2020-10-15 21:38:18,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57747 states to 57747 states and 295020 transitions. [2020-10-15 21:38:18,707 INFO L78 Accepts]: Start accepts. Automaton has 57747 states and 295020 transitions. Word has length 4 [2020-10-15 21:38:18,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 21:38:18,707 INFO L481 AbstractCegarLoop]: Abstraction has 57747 states and 295020 transitions. [2020-10-15 21:38:18,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 21:38:18,708 INFO L276 IsEmpty]: Start isEmpty. Operand 57747 states and 295020 transitions. [2020-10-15 21:38:18,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 21:38:18,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 21:38:18,708 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 21:38:18,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 21:38:18,708 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 21:38:18,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 21:38:18,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1106760830, now seen corresponding path program 1 times [2020-10-15 21:38:18,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 21:38:18,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092692568] [2020-10-15 21:38:18,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 21:38:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 21:38:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 21:38:18,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092692568] [2020-10-15 21:38:18,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 21:38:18,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 21:38:18,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552685926] [2020-10-15 21:38:18,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 21:38:18,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 21:38:18,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 21:38:18,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 21:38:18,734 INFO L87 Difference]: Start difference. First operand 57747 states and 295020 transitions. Second operand 3 states. [2020-10-15 21:38:18,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 21:38:18,953 INFO L93 Difference]: Finished difference Result 20479 states and 104448 transitions. [2020-10-15 21:38:18,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 21:38:18,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-15 21:38:18,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 21:38:19,043 INFO L225 Difference]: With dead ends: 20479 [2020-10-15 21:38:19,043 INFO L226 Difference]: Without dead ends: 20479 [2020-10-15 21:38:19,044 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 [2020-10-15 21:38:19,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20479 states. [2020-10-15 21:38:23,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20479 to 20479. [2020-10-15 21:38:23,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20479 states. [2020-10-15 21:38:23,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20479 states to 20479 states and 104448 transitions. [2020-10-15 21:38:23,121 INFO L78 Accepts]: Start accepts. Automaton has 20479 states and 104448 transitions. Word has length 10 [2020-10-15 21:38:23,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 21:38:23,121 INFO L481 AbstractCegarLoop]: Abstraction has 20479 states and 104448 transitions. [2020-10-15 21:38:23,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 21:38:23,122 INFO L276 IsEmpty]: Start isEmpty. Operand 20479 states and 104448 transitions. [2020-10-15 21:38:23,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 21:38:23,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 21:38:23,129 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 21:38:23,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 21:38:23,129 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 21:38:23,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 21:38:23,129 INFO L82 PathProgramCache]: Analyzing trace with hash -2077234539, now seen corresponding path program 1 times [2020-10-15 21:38:23,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 21:38:23,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864842504] [2020-10-15 21:38:23,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 21:38:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 21:38:23,138 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 21:38:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 21:38:23,145 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 21:38:23,150 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 21:38:23,150 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 21:38:23,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 21:38:23,151 WARN L371 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 21:38:23,151 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-10-15 21:38:23,165 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,165 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,165 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,165 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,166 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,166 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,166 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,166 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,166 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,167 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,167 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,167 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,167 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,167 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,167 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,167 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,168 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,168 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,168 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,168 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,168 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,168 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,169 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,169 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,169 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,169 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,169 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,169 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,170 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,170 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,170 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,170 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,170 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,170 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,171 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,171 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,171 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,171 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,171 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,171 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,171 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,172 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,172 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,172 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,172 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,172 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,173 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,174 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,174 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,174 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,175 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,175 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,175 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,175 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,176 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,177 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,177 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,177 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 21:38:23,186 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-15 21:38:23,187 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 21:38:23,187 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 21:38:23,187 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 21:38:23,187 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 21:38:23,187 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 21:38:23,187 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 21:38:23,187 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 21:38:23,187 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 21:38:23,189 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 21:38:23,189 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 88 transitions, 253 flow [2020-10-15 21:38:23,189 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 88 transitions, 253 flow [2020-10-15 21:38:23,190 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 95 places, 88 transitions, 253 flow [2020-10-15 21:38:23,208 INFO L129 PetriNetUnfolder]: 15/150 cut-off events. [2020-10-15 21:38:23,208 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-10-15 21:38:23,210 INFO L80 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 150 events. 15/150 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 367 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 164. Up to 16 conditions per place. [2020-10-15 21:38:23,217 INFO L117 LiptonReduction]: Number of co-enabled transitions 5040 [2020-10-15 21:38:24,794 INFO L132 LiptonReduction]: Checked pairs total: 10587 [2020-10-15 21:38:24,794 INFO L134 LiptonReduction]: Total number of compositions: 73 [2020-10-15 21:38:24,797 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 43 transitions, 163 flow [2020-10-15 21:50:16,806 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 468749 states. [2020-10-15 21:50:16,806 INFO L276 IsEmpty]: Start isEmpty. Operand 468749 states. [2020-10-15 21:50:16,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 21:50:16,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 21:50:16,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 21:50:16,807 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 21:50:16,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 21:50:16,807 INFO L82 PathProgramCache]: Analyzing trace with hash 27396338, now seen corresponding path program 1 times [2020-10-15 21:50:16,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 21:50:16,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248554018] [2020-10-15 21:50:16,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 21:50:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 21:50:16,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 21:50:16,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248554018] [2020-10-15 21:50:16,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 21:50:16,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 21:50:16,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867654253] [2020-10-15 21:50:16,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 21:50:16,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 21:50:16,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 21:50:16,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 21:50:16,843 INFO L87 Difference]: Start difference. First operand 468749 states. Second operand 3 states. [2020-10-15 21:50:20,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 21:50:20,009 INFO L93 Difference]: Finished difference Result 301201 states and 1784490 transitions. [2020-10-15 21:50:20,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 21:50:20,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 21:50:20,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 21:50:21,250 INFO L225 Difference]: With dead ends: 301201 [2020-10-15 21:50:21,251 INFO L226 Difference]: Without dead ends: 301201 [2020-10-15 21:50:21,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown