/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/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 17:47:18,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 17:47:18,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 17:47:18,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 17:47:18,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 17:47:18,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 17:47:18,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 17:47:18,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 17:47:18,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 17:47:18,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 17:47:18,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 17:47:18,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 17:47:18,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 17:47:18,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 17:47:18,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 17:47:18,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 17:47:18,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 17:47:18,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 17:47:18,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 17:47:18,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 17:47:18,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 17:47:18,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 17:47:18,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 17:47:18,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 17:47:18,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-09 17:47:18,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 17:47:18,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 17:47:18,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 17:47:18,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 17:47:18,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 17:47:18,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 17:47:18,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 17:47:18,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 17:47:18,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 17:47:18,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 17:47:18,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 17:47:18,791 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 17:47:18,812 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 17:47:18,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 17:47:18,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 17:47:18,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 17:47:18,814 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 17:47:18,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 17:47:18,814 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 17:47:18,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 17:47:18,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 17:47:18,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 17:47:18,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 17:47:18,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 17:47:18,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 17:47:18,816 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 17:47:18,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 17:47:18,816 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 17:47:18,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 17:47:18,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 17:47:18,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 17:47:18,817 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 17:47:18,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 17:47:18,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 17:47:18,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 17:47:18,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 17:47:18,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 17:47:18,818 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 17:47:18,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 17:47:18,818 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 17:47:18,818 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 17:47:18,819 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 17:47:19,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 17:47:19,157 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 17:47:19,161 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 17:47:19,163 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 17:47:19,164 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 17:47:19,165 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-10-09 17:47:19,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4990f7a07/19cc6fa9f30e47a6b33c11fd07564907/FLAG7b0141c20 [2020-10-09 17:47:19,782 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 17:47:19,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-10-09 17:47:19,796 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4990f7a07/19cc6fa9f30e47a6b33c11fd07564907/FLAG7b0141c20 [2020-10-09 17:47:20,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4990f7a07/19cc6fa9f30e47a6b33c11fd07564907 [2020-10-09 17:47:20,058 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 17:47:20,060 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 17:47:20,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 17:47:20,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 17:47:20,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 17:47:20,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 05:47:20" (1/1) ... [2020-10-09 17:47:20,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a642acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:20, skipping insertion in model container [2020-10-09 17:47:20,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 05:47:20" (1/1) ... [2020-10-09 17:47:20,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 17:47:20,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 17:47:20,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 17:47:20,603 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 17:47:20,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 17:47:20,719 INFO L208 MainTranslator]: Completed translation [2020-10-09 17:47:20,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:20 WrapperNode [2020-10-09 17:47:20,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 17:47:20,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 17:47:20,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 17:47:20,721 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 17:47:20,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:20" (1/1) ... [2020-10-09 17:47:20,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:20" (1/1) ... [2020-10-09 17:47:20,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 17:47:20,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 17:47:20,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 17:47:20,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 17:47:20,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:20" (1/1) ... [2020-10-09 17:47:20,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:20" (1/1) ... [2020-10-09 17:47:20,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:20" (1/1) ... [2020-10-09 17:47:20,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:20" (1/1) ... [2020-10-09 17:47:20,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:20" (1/1) ... [2020-10-09 17:47:20,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:20" (1/1) ... [2020-10-09 17:47:20,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:20" (1/1) ... [2020-10-09 17:47:20,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 17:47:20,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 17:47:20,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 17:47:20,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 17:47:20,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:20" (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 [2020-10-09 17:47:20,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 17:47:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 17:47:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 17:47:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 17:47:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-09 17:47:20,886 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-09 17:47:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-09 17:47:20,886 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-09 17:47:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-09 17:47:20,887 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-09 17:47:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 17:47:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 17:47:20,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 17:47:20,889 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 17:47:21,300 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 17:47:21,301 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 17:47:21,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 05:47:21 BoogieIcfgContainer [2020-10-09 17:47:21,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 17:47:21,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 17:47:21,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 17:47:21,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 17:47:21,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 05:47:20" (1/3) ... [2020-10-09 17:47:21,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4fc1a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 05:47:21, skipping insertion in model container [2020-10-09 17:47:21,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:20" (2/3) ... [2020-10-09 17:47:21,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4fc1a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 05:47:21, skipping insertion in model container [2020-10-09 17:47:21,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 05:47:21" (3/3) ... [2020-10-09 17:47:21,312 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2020-10-09 17:47:21,324 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 17:47:21,333 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 17:47:21,334 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 17:47:21,360 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,361 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,361 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,361 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,362 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,362 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,363 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,363 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,363 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,363 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,364 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,364 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,365 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,365 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,365 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,365 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,366 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,366 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,370 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,370 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,371 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,371 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,377 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,378 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,378 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,379 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,381 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,381 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,381 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,381 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:21,406 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-09 17:47:21,429 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 17:47:21,429 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 17:47:21,429 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 17:47:21,429 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 17:47:21,430 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 17:47:21,430 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 17:47:21,430 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 17:47:21,430 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 17:47:21,442 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-09 17:47:21,481 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-09 17:47:21,482 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:47:21,487 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-09 17:47:21,488 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 153 flow [2020-10-09 17:47:21,493 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 55 transitions, 119 flow [2020-10-09 17:47:21,520 INFO L129 PetriNetUnfolder]: 1/54 cut-off events. [2020-10-09 17:47:21,520 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:47:21,521 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:47:21,524 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:47:21,524 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:47:21,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:47:21,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1532593683, now seen corresponding path program 1 times [2020-10-09 17:47:21,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:47:21,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590017426] [2020-10-09 17:47:21,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 17:47:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:47:21,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:47:21,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:47:21,743 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:47:21,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:21,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:47:21,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:21,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590017426] [2020-10-09 17:47:21,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:47:21,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:47:21,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845811718] [2020-10-09 17:47:21,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:47:21,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:47:21,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:47:21,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:47:22,141 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 69 [2020-10-09 17:47:22,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 119 flow. Second operand 8 states. [2020-10-09 17:47:22,144 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:47:22,144 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 69 [2020-10-09 17:47:22,146 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:47:22,285 INFO L129 PetriNetUnfolder]: 3/69 cut-off events. [2020-10-09 17:47:22,285 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:47:22,286 INFO L80 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 69 events. 3/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 0 based on Foata normal form. 4/72 useless extension candidates. Maximal degree in co-relation 75. Up to 7 conditions per place. [2020-10-09 17:47:22,288 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 6 selfloop transitions, 2 changer transitions 11/64 dead transitions. [2020-10-09 17:47:22,288 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 64 transitions, 173 flow [2020-10-09 17:47:22,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 17:47:22,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 17:47:22,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 553 transitions. [2020-10-09 17:47:22,310 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8904991948470209 [2020-10-09 17:47:22,311 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 553 transitions. [2020-10-09 17:47:22,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 553 transitions. [2020-10-09 17:47:22,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:47:22,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 553 transitions. [2020-10-09 17:47:22,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 17:47:22,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 17:47:22,331 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 17:47:22,333 INFO L185 Difference]: Start difference. First operand has 64 places, 55 transitions, 119 flow. Second operand 9 states and 553 transitions. [2020-10-09 17:47:22,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 64 transitions, 173 flow [2020-10-09 17:47:22,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 64 transitions, 170 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-09 17:47:22,343 INFO L241 Difference]: Finished difference. Result has 76 places, 53 transitions, 132 flow [2020-10-09 17:47:22,346 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=132, PETRI_PLACES=76, PETRI_TRANSITIONS=53} [2020-10-09 17:47:22,347 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 12 predicate places. [2020-10-09 17:47:22,347 INFO L481 AbstractCegarLoop]: Abstraction has has 76 places, 53 transitions, 132 flow [2020-10-09 17:47:22,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:47:22,348 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:47:22,348 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:47:22,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 17:47:22,559 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:47:22,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:47:22,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1188529196, now seen corresponding path program 1 times [2020-10-09 17:47:22,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:47:22,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [60742676] [2020-10-09 17:47:22,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-09 17:47:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:47:22,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:47:22,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:47:22,638 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:47:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:22,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:47:22,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:22,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [60742676] [2020-10-09 17:47:22,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:47:22,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:47:22,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611532727] [2020-10-09 17:47:22,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:47:22,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:47:22,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:47:22,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:47:22,865 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 69 [2020-10-09 17:47:22,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 53 transitions, 132 flow. Second operand 8 states. [2020-10-09 17:47:22,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:47:22,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 69 [2020-10-09 17:47:22,866 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:47:23,015 INFO L129 PetriNetUnfolder]: 18/150 cut-off events. [2020-10-09 17:47:23,015 INFO L130 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2020-10-09 17:47:23,017 INFO L80 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 150 events. 18/150 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 564 event pairs, 0 based on Foata normal form. 5/153 useless extension candidates. Maximal degree in co-relation 242. Up to 15 conditions per place. [2020-10-09 17:47:23,018 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 10 selfloop transitions, 5 changer transitions 23/82 dead transitions. [2020-10-09 17:47:23,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 82 transitions, 306 flow [2020-10-09 17:47:23,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 17:47:23,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-09 17:47:23,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 795 transitions. [2020-10-09 17:47:23,022 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8862876254180602 [2020-10-09 17:47:23,022 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 795 transitions. [2020-10-09 17:47:23,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 795 transitions. [2020-10-09 17:47:23,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:47:23,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 795 transitions. [2020-10-09 17:47:23,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-09 17:47:23,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-09 17:47:23,028 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-09 17:47:23,028 INFO L185 Difference]: Start difference. First operand has 76 places, 53 transitions, 132 flow. Second operand 13 states and 795 transitions. [2020-10-09 17:47:23,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 82 transitions, 306 flow [2020-10-09 17:47:23,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 82 transitions, 254 flow, removed 24 selfloop flow, removed 8 redundant places. [2020-10-09 17:47:23,033 INFO L241 Difference]: Finished difference. Result has 84 places, 55 transitions, 158 flow [2020-10-09 17:47:23,033 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=158, PETRI_PLACES=84, PETRI_TRANSITIONS=55} [2020-10-09 17:47:23,034 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 20 predicate places. [2020-10-09 17:47:23,034 INFO L481 AbstractCegarLoop]: Abstraction has has 84 places, 55 transitions, 158 flow [2020-10-09 17:47:23,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:47:23,035 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:47:23,035 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:47:23,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 17:47:23,250 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:47:23,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:47:23,250 INFO L82 PathProgramCache]: Analyzing trace with hash -511725803, now seen corresponding path program 1 times [2020-10-09 17:47:23,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:47:23,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786032699] [2020-10-09 17:47:23,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-09 17:47:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:47:23,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:47:23,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:47:23,332 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:47:23,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:23,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:47:23,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:23,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786032699] [2020-10-09 17:47:23,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:47:23,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:47:23,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695185267] [2020-10-09 17:47:23,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:47:23,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:47:23,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:47:23,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:47:23,672 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 69 [2020-10-09 17:47:23,672 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 55 transitions, 158 flow. Second operand 8 states. [2020-10-09 17:47:23,673 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:47:23,673 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 69 [2020-10-09 17:47:23,673 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:47:23,816 INFO L129 PetriNetUnfolder]: 14/124 cut-off events. [2020-10-09 17:47:23,817 INFO L130 PetriNetUnfolder]: For 129/135 co-relation queries the response was YES. [2020-10-09 17:47:23,818 INFO L80 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 124 events. 14/124 cut-off events. For 129/135 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 410 event pairs, 0 based on Foata normal form. 6/127 useless extension candidates. Maximal degree in co-relation 254. Up to 13 conditions per place. [2020-10-09 17:47:23,818 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 6 selfloop transitions, 3 changer transitions 17/72 dead transitions. [2020-10-09 17:47:23,819 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 72 transitions, 292 flow [2020-10-09 17:47:23,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 17:47:23,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-09 17:47:23,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 783 transitions. [2020-10-09 17:47:23,823 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8729096989966555 [2020-10-09 17:47:23,823 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 783 transitions. [2020-10-09 17:47:23,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 783 transitions. [2020-10-09 17:47:23,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:47:23,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 783 transitions. [2020-10-09 17:47:23,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-09 17:47:23,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-09 17:47:23,828 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-09 17:47:23,828 INFO L185 Difference]: Start difference. First operand has 84 places, 55 transitions, 158 flow. Second operand 13 states and 783 transitions. [2020-10-09 17:47:23,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 72 transitions, 292 flow [2020-10-09 17:47:23,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 72 transitions, 238 flow, removed 27 selfloop flow, removed 9 redundant places. [2020-10-09 17:47:23,833 INFO L241 Difference]: Finished difference. Result has 89 places, 55 transitions, 172 flow [2020-10-09 17:47:23,834 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=172, PETRI_PLACES=89, PETRI_TRANSITIONS=55} [2020-10-09 17:47:23,834 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 25 predicate places. [2020-10-09 17:47:23,834 INFO L481 AbstractCegarLoop]: Abstraction has has 89 places, 55 transitions, 172 flow [2020-10-09 17:47:23,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:47:23,834 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:47:23,835 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:47:24,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 17:47:24,045 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:47:24,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:47:24,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1921213774, now seen corresponding path program 1 times [2020-10-09 17:47:24,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:47:24,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604373381] [2020-10-09 17:47:24,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-09 17:47:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:47:24,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 17:47:24,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:47:24,135 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:47:24,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:24,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:47:24,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:24,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604373381] [2020-10-09 17:47:24,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:47:24,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2020-10-09 17:47:24,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053618268] [2020-10-09 17:47:24,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-09 17:47:24,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:47:24,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-09 17:47:24,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-09 17:47:24,482 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-09 17:47:24,483 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 55 transitions, 172 flow. Second operand 10 states. [2020-10-09 17:47:24,483 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:47:24,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-09 17:47:24,484 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:47:24,622 INFO L129 PetriNetUnfolder]: 0/133 cut-off events. [2020-10-09 17:47:24,623 INFO L130 PetriNetUnfolder]: For 226/313 co-relation queries the response was YES. [2020-10-09 17:47:24,623 INFO L80 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 133 events. 0/133 cut-off events. For 226/313 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 549 event pairs, 0 based on Foata normal form. 8/140 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2020-10-09 17:47:24,624 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 6 selfloop transitions, 5 changer transitions 11/66 dead transitions. [2020-10-09 17:47:24,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 66 transitions, 287 flow [2020-10-09 17:47:24,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 17:47:24,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-09 17:47:24,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 752 transitions. [2020-10-09 17:47:24,627 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8383500557413601 [2020-10-09 17:47:24,627 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 752 transitions. [2020-10-09 17:47:24,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 752 transitions. [2020-10-09 17:47:24,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:47:24,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 752 transitions. [2020-10-09 17:47:24,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-09 17:47:24,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-09 17:47:24,632 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-09 17:47:24,632 INFO L185 Difference]: Start difference. First operand has 89 places, 55 transitions, 172 flow. Second operand 13 states and 752 transitions. [2020-10-09 17:47:24,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 66 transitions, 287 flow [2020-10-09 17:47:24,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 66 transitions, 237 flow, removed 21 selfloop flow, removed 12 redundant places. [2020-10-09 17:47:24,636 INFO L241 Difference]: Finished difference. Result has 88 places, 55 transitions, 178 flow [2020-10-09 17:47:24,637 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=178, PETRI_PLACES=88, PETRI_TRANSITIONS=55} [2020-10-09 17:47:24,637 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 24 predicate places. [2020-10-09 17:47:24,637 INFO L481 AbstractCegarLoop]: Abstraction has has 88 places, 55 transitions, 178 flow [2020-10-09 17:47:24,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-09 17:47:24,638 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:47:24,638 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:47:24,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-09 17:47:24,850 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:47:24,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:47:24,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1360644722, now seen corresponding path program 2 times [2020-10-09 17:47:24,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:47:24,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720059236] [2020-10-09 17:47:24,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-09 17:47:24,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-09 17:47:24,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 17:47:24,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 17:47:24,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:47:24,922 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:47:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:24,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:47:24,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:24,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720059236] [2020-10-09 17:47:24,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:47:24,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:47:24,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438755999] [2020-10-09 17:47:24,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:47:24,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:47:24,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:47:24,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:47:25,057 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-09 17:47:25,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 55 transitions, 178 flow. Second operand 8 states. [2020-10-09 17:47:25,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:47:25,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-09 17:47:25,058 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:47:25,298 INFO L129 PetriNetUnfolder]: 124/383 cut-off events. [2020-10-09 17:47:25,298 INFO L130 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2020-10-09 17:47:25,303 INFO L80 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 383 events. 124/383 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2196 event pairs, 0 based on Foata normal form. 14/378 useless extension candidates. Maximal degree in co-relation 689. Up to 72 conditions per place. [2020-10-09 17:47:25,305 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 10 selfloop transitions, 9 changer transitions 29/93 dead transitions. [2020-10-09 17:47:25,305 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 93 transitions, 350 flow [2020-10-09 17:47:25,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 17:47:25,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-09 17:47:25,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 723 transitions. [2020-10-09 17:47:25,309 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8731884057971014 [2020-10-09 17:47:25,309 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 723 transitions. [2020-10-09 17:47:25,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 723 transitions. [2020-10-09 17:47:25,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:47:25,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 723 transitions. [2020-10-09 17:47:25,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 13 states. [2020-10-09 17:47:25,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 13 states. [2020-10-09 17:47:25,314 INFO L81 ComplementDD]: Finished complementDD. Result 13 states. [2020-10-09 17:47:25,315 INFO L185 Difference]: Start difference. First operand has 88 places, 55 transitions, 178 flow. Second operand 12 states and 723 transitions. [2020-10-09 17:47:25,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 93 transitions, 350 flow [2020-10-09 17:47:25,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 93 transitions, 311 flow, removed 11 selfloop flow, removed 14 redundant places. [2020-10-09 17:47:25,324 INFO L241 Difference]: Finished difference. Result has 86 places, 61 transitions, 237 flow [2020-10-09 17:47:25,325 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=237, PETRI_PLACES=86, PETRI_TRANSITIONS=61} [2020-10-09 17:47:25,325 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 22 predicate places. [2020-10-09 17:47:25,325 INFO L481 AbstractCegarLoop]: Abstraction has has 86 places, 61 transitions, 237 flow [2020-10-09 17:47:25,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:47:25,326 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:47:25,326 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:47:25,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-09 17:47:25,542 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:47:25,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:47:25,543 INFO L82 PathProgramCache]: Analyzing trace with hash 921713480, now seen corresponding path program 1 times [2020-10-09 17:47:25,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:47:25,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782138680] [2020-10-09 17:47:25,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-09 17:47:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:47:25,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 17:47:25,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:47:25,634 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:47:25,637 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:47:25,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:25,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:47:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:25,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782138680] [2020-10-09 17:47:25,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:47:25,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 9 [2020-10-09 17:47:25,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035442268] [2020-10-09 17:47:25,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 17:47:25,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:47:25,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 17:47:25,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-09 17:47:25,966 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-09 17:47:25,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 61 transitions, 237 flow. Second operand 9 states. [2020-10-09 17:47:25,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:47:25,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-09 17:47:25,967 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:47:26,084 INFO L129 PetriNetUnfolder]: 47/271 cut-off events. [2020-10-09 17:47:26,084 INFO L130 PetriNetUnfolder]: For 736/755 co-relation queries the response was YES. [2020-10-09 17:47:26,086 INFO L80 FinitePrefix]: Finished finitePrefix Result has 810 conditions, 271 events. 47/271 cut-off events. For 736/755 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1329 event pairs, 10 based on Foata normal form. 8/273 useless extension candidates. Maximal degree in co-relation 771. Up to 74 conditions per place. [2020-10-09 17:47:26,087 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 13 selfloop transitions, 3 changer transitions 5/70 dead transitions. [2020-10-09 17:47:26,088 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 70 transitions, 299 flow [2020-10-09 17:47:26,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-09 17:47:26,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-09 17:47:26,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 469 transitions. [2020-10-09 17:47:26,091 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8496376811594203 [2020-10-09 17:47:26,091 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 469 transitions. [2020-10-09 17:47:26,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 469 transitions. [2020-10-09 17:47:26,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:47:26,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 469 transitions. [2020-10-09 17:47:26,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-09 17:47:26,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-09 17:47:26,095 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-09 17:47:26,096 INFO L185 Difference]: Start difference. First operand has 86 places, 61 transitions, 237 flow. Second operand 8 states and 469 transitions. [2020-10-09 17:47:26,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 70 transitions, 299 flow [2020-10-09 17:47:26,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 70 transitions, 269 flow, removed 11 selfloop flow, removed 7 redundant places. [2020-10-09 17:47:26,101 INFO L241 Difference]: Finished difference. Result has 85 places, 61 transitions, 218 flow [2020-10-09 17:47:26,102 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=218, PETRI_PLACES=85, PETRI_TRANSITIONS=61} [2020-10-09 17:47:26,104 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 21 predicate places. [2020-10-09 17:47:26,104 INFO L481 AbstractCegarLoop]: Abstraction has has 85 places, 61 transitions, 218 flow [2020-10-09 17:47:26,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 17:47:26,104 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:47:26,105 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:47:26,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-09 17:47:26,317 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:47:26,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:47:26,317 INFO L82 PathProgramCache]: Analyzing trace with hash -682624510, now seen corresponding path program 2 times [2020-10-09 17:47:26,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:47:26,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367714018] [2020-10-09 17:47:26,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-09 17:47:26,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-09 17:47:26,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 17:47:26,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 17:47:26,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:47:26,400 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:47:26,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:26,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:47:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:26,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367714018] [2020-10-09 17:47:26,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:47:26,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 17:47:26,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127471818] [2020-10-09 17:47:26,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 17:47:26,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:47:26,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 17:47:26,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 17:47:26,707 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-09 17:47:26,708 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 61 transitions, 218 flow. Second operand 9 states. [2020-10-09 17:47:26,708 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:47:26,708 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-09 17:47:26,708 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:47:26,805 INFO L129 PetriNetUnfolder]: 44/293 cut-off events. [2020-10-09 17:47:26,806 INFO L130 PetriNetUnfolder]: For 329/350 co-relation queries the response was YES. [2020-10-09 17:47:26,807 INFO L80 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 293 events. 44/293 cut-off events. For 329/350 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1612 event pairs, 12 based on Foata normal form. 4/290 useless extension candidates. Maximal degree in co-relation 660. Up to 80 conditions per place. [2020-10-09 17:47:26,808 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 14 selfloop transitions, 2 changer transitions 6/71 dead transitions. [2020-10-09 17:47:26,808 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 71 transitions, 304 flow [2020-10-09 17:47:26,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 17:47:26,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-09 17:47:26,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 414 transitions. [2020-10-09 17:47:26,811 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2020-10-09 17:47:26,811 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 414 transitions. [2020-10-09 17:47:26,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 414 transitions. [2020-10-09 17:47:26,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:47:26,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 414 transitions. [2020-10-09 17:47:26,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-09 17:47:26,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-09 17:47:26,814 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-09 17:47:26,814 INFO L185 Difference]: Start difference. First operand has 85 places, 61 transitions, 218 flow. Second operand 7 states and 414 transitions. [2020-10-09 17:47:26,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 71 transitions, 304 flow [2020-10-09 17:47:26,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 71 transitions, 284 flow, removed 8 selfloop flow, removed 5 redundant places. [2020-10-09 17:47:26,818 INFO L241 Difference]: Finished difference. Result has 88 places, 61 transitions, 226 flow [2020-10-09 17:47:26,818 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=226, PETRI_PLACES=88, PETRI_TRANSITIONS=61} [2020-10-09 17:47:26,818 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 24 predicate places. [2020-10-09 17:47:26,818 INFO L481 AbstractCegarLoop]: Abstraction has has 88 places, 61 transitions, 226 flow [2020-10-09 17:47:26,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 17:47:26,819 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:47:26,819 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:47:27,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-09 17:47:27,032 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:47:27,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:47:27,033 INFO L82 PathProgramCache]: Analyzing trace with hash -50137068, now seen corresponding path program 3 times [2020-10-09 17:47:27,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:47:27,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658501089] [2020-10-09 17:47:27,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-09 17:47:27,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-10-09 17:47:27,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 17:47:27,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 17:47:27,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:47:27,109 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:47:27,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:27,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:47:27,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:27,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658501089] [2020-10-09 17:47:27,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:47:27,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2020-10-09 17:47:27,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053879823] [2020-10-09 17:47:27,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-09 17:47:27,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:47:27,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-09 17:47:27,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-09 17:47:27,295 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-09 17:47:27,296 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 61 transitions, 226 flow. Second operand 10 states. [2020-10-09 17:47:27,296 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:47:27,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-09 17:47:27,296 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:47:27,452 INFO L129 PetriNetUnfolder]: 33/203 cut-off events. [2020-10-09 17:47:27,452 INFO L130 PetriNetUnfolder]: For 346/422 co-relation queries the response was YES. [2020-10-09 17:47:27,453 INFO L80 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 203 events. 33/203 cut-off events. For 346/422 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1038 event pairs, 0 based on Foata normal form. 40/239 useless extension candidates. Maximal degree in co-relation 574. Up to 64 conditions per place. [2020-10-09 17:47:27,454 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 0 selfloop transitions, 0 changer transitions 66/66 dead transitions. [2020-10-09 17:47:27,454 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 66 transitions, 319 flow [2020-10-09 17:47:27,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 17:47:27,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-09 17:47:27,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 644 transitions. [2020-10-09 17:47:27,459 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8484848484848485 [2020-10-09 17:47:27,460 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 644 transitions. [2020-10-09 17:47:27,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 644 transitions. [2020-10-09 17:47:27,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:47:27,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 644 transitions. [2020-10-09 17:47:27,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-09 17:47:27,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-09 17:47:27,464 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-09 17:47:27,464 INFO L185 Difference]: Start difference. First operand has 88 places, 61 transitions, 226 flow. Second operand 11 states and 644 transitions. [2020-10-09 17:47:27,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 66 transitions, 319 flow [2020-10-09 17:47:27,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 66 transitions, 293 flow, removed 7 selfloop flow, removed 7 redundant places. [2020-10-09 17:47:27,467 INFO L241 Difference]: Finished difference. Result has 82 places, 0 transitions, 0 flow [2020-10-09 17:47:27,467 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=82, PETRI_TRANSITIONS=0} [2020-10-09 17:47:27,468 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 18 predicate places. [2020-10-09 17:47:27,468 INFO L481 AbstractCegarLoop]: Abstraction has has 82 places, 0 transitions, 0 flow [2020-10-09 17:47:27,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-09 17:47:27,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-09 17:47:27,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 05:47:27 BasicIcfg [2020-10-09 17:47:27,685 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 17:47:27,688 INFO L168 Benchmark]: Toolchain (without parser) took 7627.82 ms. Allocated memory was 252.7 MB in the beginning and 419.4 MB in the end (delta: 166.7 MB). Free memory was 208.5 MB in the beginning and 271.9 MB in the end (delta: -63.4 MB). Peak memory consumption was 103.3 MB. Max. memory is 14.2 GB. [2020-10-09 17:47:27,689 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 17:47:27,690 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.37 ms. Allocated memory was 252.7 MB in the beginning and 319.3 MB in the end (delta: 66.6 MB). Free memory was 208.5 MB in the beginning and 272.6 MB in the end (delta: -64.1 MB). Peak memory consumption was 29.5 MB. Max. memory is 14.2 GB. [2020-10-09 17:47:27,690 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.58 ms. Allocated memory is still 319.3 MB. Free memory was 272.6 MB in the beginning and 270.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 17:47:27,691 INFO L168 Benchmark]: Boogie Preprocessor took 27.52 ms. Allocated memory is still 319.3 MB. Free memory was 270.1 MB in the beginning and 267.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 17:47:27,692 INFO L168 Benchmark]: RCFGBuilder took 503.11 ms. Allocated memory is still 319.3 MB. Free memory was 267.6 MB in the beginning and 245.7 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-09 17:47:27,693 INFO L168 Benchmark]: TraceAbstraction took 6381.02 ms. Allocated memory was 319.3 MB in the beginning and 419.4 MB in the end (delta: 100.1 MB). Free memory was 245.7 MB in the beginning and 271.9 MB in the end (delta: -26.2 MB). Peak memory consumption was 73.9 MB. Max. memory is 14.2 GB. [2020-10-09 17:47:27,697 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 659.37 ms. Allocated memory was 252.7 MB in the beginning and 319.3 MB in the end (delta: 66.6 MB). Free memory was 208.5 MB in the beginning and 272.6 MB in the end (delta: -64.1 MB). Peak memory consumption was 29.5 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 51.58 ms. Allocated memory is still 319.3 MB. Free memory was 272.6 MB in the beginning and 270.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.52 ms. Allocated memory is still 319.3 MB. Free memory was 270.1 MB in the beginning and 267.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 503.11 ms. Allocated memory is still 319.3 MB. Free memory was 267.6 MB in the beginning and 245.7 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 6381.02 ms. Allocated memory was 319.3 MB in the beginning and 419.4 MB in the end (delta: 100.1 MB). Free memory was 245.7 MB in the beginning and 271.9 MB in the end (delta: -26.2 MB). Peak memory consumption was 73.9 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 6.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 383 SDslu, 629 SDs, 0 SdLazy, 612 SolverSat, 95 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 696 GetRequests, 574 SyntacticMatches, 16 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=237occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 330 NumberOfCodeBlocks, 330 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 644 ConstructedInterpolants, 0 QuantifiedInterpolants, 70634 SizeOfPredicates, 67 NumberOfNonLiveVariables, 856 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...