/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-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:40:03,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:40:03,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:40:03,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:40:03,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:40:03,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:40:03,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:40:03,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:40:03,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:40:03,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:40:03,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:40:03,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:40:03,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:40:03,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:40:03,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:40:03,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:40:03,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:40:03,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:40:03,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:40:03,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:40:03,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:40:03,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:40:03,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:40:03,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:40:03,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 01:40:03,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 01:40:03,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 01:40:03,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 01:40:03,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 01:40:03,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 01:40:03,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:40:03,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:40:03,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:40:03,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:40:03,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:40:03,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:40:03,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:40:03,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:40:03,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:40:03,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:40:03,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:40:03,742 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-PN-SemanticLbe.epf [2020-10-16 01:40:03,764 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:40:03,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:40:03,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:40:03,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:40:03,766 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:40:03,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:40:03,766 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:40:03,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:40:03,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:40:03,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:40:03,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:40:03,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:40:03,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:40:03,768 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:40:03,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:40:03,768 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:40:03,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:40:03,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:40:03,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:40:03,769 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:40:03,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:40:03,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:40:03,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:40:03,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:40:03,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:40:03,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:40:03,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:40:03,770 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:40:03,771 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:40:04,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:40:04,070 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:40:04,074 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:40:04,075 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:40:04,077 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:40:04,077 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-10-16 01:40:04,133 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81833987f/3f9193df53454334802ed4234fc96816/FLAGb21507316 [2020-10-16 01:40:04,693 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:40:04,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-10-16 01:40:04,709 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81833987f/3f9193df53454334802ed4234fc96816/FLAGb21507316 [2020-10-16 01:40:04,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81833987f/3f9193df53454334802ed4234fc96816 [2020-10-16 01:40:04,992 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:40:04,994 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:40:04,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:40:04,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:40:04,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:40:05,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:40:04" (1/1) ... [2020-10-16 01:40:05,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5076d526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:05, skipping insertion in model container [2020-10-16 01:40:05,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:40:04" (1/1) ... [2020-10-16 01:40:05,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:40:05,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:40:05,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:40:05,541 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:40:05,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:40:05,731 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:40:05,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:05 WrapperNode [2020-10-16 01:40:05,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:40:05,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:40:05,734 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:40:05,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:40:05,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:05" (1/1) ... [2020-10-16 01:40:05,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:05" (1/1) ... [2020-10-16 01:40:05,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:40:05,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:40:05,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:40:05,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:40:05,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:05" (1/1) ... [2020-10-16 01:40:05,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:05" (1/1) ... [2020-10-16 01:40:05,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:05" (1/1) ... [2020-10-16 01:40:05,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:05" (1/1) ... [2020-10-16 01:40:05,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:05" (1/1) ... [2020-10-16 01:40:05,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:05" (1/1) ... [2020-10-16 01:40:05,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:05" (1/1) ... [2020-10-16 01:40:05,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:40:05,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:40:05,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:40:05,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:40:05,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:05" (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 [2020-10-16 01:40:05,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:40:05,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:40:05,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:40:05,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:40:05,889 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:40:05,889 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:40:05,889 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:40:05,890 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:40:05,890 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:40:05,890 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:40:05,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:40:05,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:40:05,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:40:05,892 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 01:40:06,272 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:40:06,272 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:40:06,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:40:06 BoogieIcfgContainer [2020-10-16 01:40:06,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:40:06,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:40:06,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:40:06,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:40:06,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:40:04" (1/3) ... [2020-10-16 01:40:06,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ede8a91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:40:06, skipping insertion in model container [2020-10-16 01:40:06,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:05" (2/3) ... [2020-10-16 01:40:06,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ede8a91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:40:06, skipping insertion in model container [2020-10-16 01:40:06,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:40:06" (3/3) ... [2020-10-16 01:40:06,283 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc.i [2020-10-16 01:40:06,293 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:40:06,301 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:40:06,302 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:40:06,329 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,330 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,330 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,330 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,331 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,331 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,332 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,332 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,332 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,332 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,333 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,333 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,333 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,334 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,334 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,334 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,334 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,335 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,338 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,339 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,339 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,339 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,345 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,345 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,346 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,346 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,348 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,348 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,348 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,348 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:40:06,366 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:40:06,388 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:40:06,388 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:40:06,388 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:40:06,388 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:40:06,388 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:40:06,388 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:40:06,389 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:40:06,389 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:40:06,403 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 01:40:06,446 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-16 01:40:06,446 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:40:06,452 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. [2020-10-16 01:40:06,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 01:40:06,458 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 55 transitions, 119 flow [2020-10-16 01:40:06,463 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:40:06,466 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 01:40:06,469 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 01:40:06,469 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions, 119 flow [2020-10-16 01:40:06,488 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-16 01:40:06,488 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:40:06,489 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 01:40:06,490 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 01:40:07,840 INFO L132 LiptonReduction]: Checked pairs total: 1770 [2020-10-16 01:40:07,841 INFO L134 LiptonReduction]: Total number of compositions: 42 [2020-10-16 01:40:07,843 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1385 [2020-10-16 01:40:07,851 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-10-16 01:40:07,852 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:40:07,852 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:07,853 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:07,853 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:07,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:07,859 INFO L82 PathProgramCache]: Analyzing trace with hash -142927657, now seen corresponding path program 1 times [2020-10-16 01:40:07,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:07,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757915008] [2020-10-16 01:40:07,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:08,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:40:08,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757915008] [2020-10-16 01:40:08,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:08,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:40:08,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39687773] [2020-10-16 01:40:08,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:40:08,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:08,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:40:08,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:40:08,118 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 111 [2020-10-16 01:40:08,119 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states. [2020-10-16 01:40:08,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:08,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 111 [2020-10-16 01:40:08,121 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:08,147 INFO L129 PetriNetUnfolder]: 3/24 cut-off events. [2020-10-16 01:40:08,147 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:40:08,148 INFO L80 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 24 events. 3/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 33 event pairs, 1 based on Foata normal form. 5/29 useless extension candidates. Maximal degree in co-relation 35. Up to 10 conditions per place. [2020-10-16 01:40:08,149 INFO L132 encePairwiseOnDemand]: 106/111 looper letters, 3 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2020-10-16 01:40:08,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 19 transitions, 59 flow [2020-10-16 01:40:08,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:40:08,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:40:08,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2020-10-16 01:40:08,166 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8468468468468469 [2020-10-16 01:40:08,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2020-10-16 01:40:08,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2020-10-16 01:40:08,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:08,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2020-10-16 01:40:08,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:40:08,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:40:08,182 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:40:08,185 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 282 transitions. [2020-10-16 01:40:08,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 19 transitions, 59 flow [2020-10-16 01:40:08,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 19 transitions, 56 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:40:08,191 INFO L241 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2020-10-16 01:40:08,194 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2020-10-16 01:40:08,194 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 01:40:08,195 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2020-10-16 01:40:08,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:40:08,195 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:08,195 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:08,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:40:08,196 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:08,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:08,196 INFO L82 PathProgramCache]: Analyzing trace with hash -135790335, now seen corresponding path program 1 times [2020-10-16 01:40:08,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:08,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806567386] [2020-10-16 01:40:08,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:08,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:40:08,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806567386] [2020-10-16 01:40:08,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:08,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:40:08,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541933055] [2020-10-16 01:40:08,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:40:08,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:08,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:40:08,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:40:08,300 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 111 [2020-10-16 01:40:08,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand 3 states. [2020-10-16 01:40:08,301 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:08,301 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 111 [2020-10-16 01:40:08,301 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:08,364 INFO L129 PetriNetUnfolder]: 29/85 cut-off events. [2020-10-16 01:40:08,365 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2020-10-16 01:40:08,369 INFO L80 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 85 events. 29/85 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 329 event pairs, 16 based on Foata normal form. 4/81 useless extension candidates. Maximal degree in co-relation 164. Up to 44 conditions per place. [2020-10-16 01:40:08,371 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 6 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2020-10-16 01:40:08,371 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 79 flow [2020-10-16 01:40:08,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:40:08,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:40:08,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2020-10-16 01:40:08,378 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8198198198198198 [2020-10-16 01:40:08,378 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2020-10-16 01:40:08,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2020-10-16 01:40:08,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:08,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2020-10-16 01:40:08,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:40:08,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:40:08,383 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:40:08,383 INFO L185 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 3 states and 273 transitions. [2020-10-16 01:40:08,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 79 flow [2020-10-16 01:40:08,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 21 transitions, 76 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:40:08,385 INFO L241 Difference]: Finished difference. Result has 29 places, 19 transitions, 64 flow [2020-10-16 01:40:08,385 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2020-10-16 01:40:08,386 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2020-10-16 01:40:08,386 INFO L481 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 64 flow [2020-10-16 01:40:08,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:40:08,386 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:08,387 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:08,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:40:08,387 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:08,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:08,387 INFO L82 PathProgramCache]: Analyzing trace with hash -201967492, now seen corresponding path program 1 times [2020-10-16 01:40:08,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:08,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003592972] [2020-10-16 01:40:08,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:08,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:40:08,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003592972] [2020-10-16 01:40:08,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:08,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:40:08,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16518933] [2020-10-16 01:40:08,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:40:08,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:08,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:40:08,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:40:08,436 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 111 [2020-10-16 01:40:08,436 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 64 flow. Second operand 3 states. [2020-10-16 01:40:08,436 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:08,437 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 111 [2020-10-16 01:40:08,437 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:08,465 INFO L129 PetriNetUnfolder]: 17/56 cut-off events. [2020-10-16 01:40:08,465 INFO L130 PetriNetUnfolder]: For 37/49 co-relation queries the response was YES. [2020-10-16 01:40:08,466 INFO L80 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 56 events. 17/56 cut-off events. For 37/49 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 183 event pairs, 11 based on Foata normal form. 7/57 useless extension candidates. Maximal degree in co-relation 118. Up to 25 conditions per place. [2020-10-16 01:40:08,466 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 6 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2020-10-16 01:40:08,467 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 21 transitions, 84 flow [2020-10-16 01:40:08,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:40:08,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:40:08,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2020-10-16 01:40:08,470 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8198198198198198 [2020-10-16 01:40:08,471 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2020-10-16 01:40:08,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2020-10-16 01:40:08,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:08,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2020-10-16 01:40:08,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:40:08,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:40:08,474 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:40:08,474 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 64 flow. Second operand 3 states and 273 transitions. [2020-10-16 01:40:08,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 21 transitions, 84 flow [2020-10-16 01:40:08,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 21 transitions, 80 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:40:08,476 INFO L241 Difference]: Finished difference. Result has 30 places, 19 transitions, 68 flow [2020-10-16 01:40:08,477 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2020-10-16 01:40:08,477 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 01:40:08,477 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 68 flow [2020-10-16 01:40:08,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:40:08,478 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:08,478 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:08,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:40:08,478 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:08,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:08,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1971283482, now seen corresponding path program 1 times [2020-10-16 01:40:08,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:08,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754254842] [2020-10-16 01:40:08,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:08,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:40:08,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754254842] [2020-10-16 01:40:08,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:08,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:40:08,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797004413] [2020-10-16 01:40:08,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:40:08,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:08,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:40:08,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:40:08,542 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 111 [2020-10-16 01:40:08,543 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 68 flow. Second operand 3 states. [2020-10-16 01:40:08,543 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:08,543 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 111 [2020-10-16 01:40:08,543 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:08,554 INFO L129 PetriNetUnfolder]: 3/24 cut-off events. [2020-10-16 01:40:08,554 INFO L130 PetriNetUnfolder]: For 33/37 co-relation queries the response was YES. [2020-10-16 01:40:08,555 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 24 events. 3/24 cut-off events. For 33/37 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 39 event pairs, 1 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 49. Up to 10 conditions per place. [2020-10-16 01:40:08,555 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 1 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2020-10-16 01:40:08,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 19 transitions, 74 flow [2020-10-16 01:40:08,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:40:08,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:40:08,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2020-10-16 01:40:08,557 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8498498498498499 [2020-10-16 01:40:08,557 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2020-10-16 01:40:08,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2020-10-16 01:40:08,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:08,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2020-10-16 01:40:08,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:40:08,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:40:08,560 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:40:08,560 INFO L185 Difference]: Start difference. First operand has 30 places, 19 transitions, 68 flow. Second operand 3 states and 283 transitions. [2020-10-16 01:40:08,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 19 transitions, 74 flow [2020-10-16 01:40:08,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 19 transitions, 70 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:40:08,562 INFO L241 Difference]: Finished difference. Result has 31 places, 19 transitions, 72 flow [2020-10-16 01:40:08,562 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2020-10-16 01:40:08,563 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2020-10-16 01:40:08,563 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 72 flow [2020-10-16 01:40:08,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:40:08,563 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:08,563 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:08,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:40:08,564 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:08,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:08,564 INFO L82 PathProgramCache]: Analyzing trace with hash 980225973, now seen corresponding path program 1 times [2020-10-16 01:40:08,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:08,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80973999] [2020-10-16 01:40:08,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:08,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:40:08,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80973999] [2020-10-16 01:40:08,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:08,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:40:08,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032715432] [2020-10-16 01:40:08,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:40:08,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:08,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:40:08,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:40:08,674 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 111 [2020-10-16 01:40:08,675 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 72 flow. Second operand 4 states. [2020-10-16 01:40:08,675 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:08,675 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 111 [2020-10-16 01:40:08,675 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:08,773 INFO L129 PetriNetUnfolder]: 42/96 cut-off events. [2020-10-16 01:40:08,774 INFO L130 PetriNetUnfolder]: For 243/264 co-relation queries the response was YES. [2020-10-16 01:40:08,775 INFO L80 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 96 events. 42/96 cut-off events. For 243/264 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 350 event pairs, 18 based on Foata normal form. 16/105 useless extension candidates. Maximal degree in co-relation 240. Up to 61 conditions per place. [2020-10-16 01:40:08,776 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 7 selfloop transitions, 7 changer transitions 2/29 dead transitions. [2020-10-16 01:40:08,777 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 124 flow [2020-10-16 01:40:08,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:40:08,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:40:08,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 418 transitions. [2020-10-16 01:40:08,781 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7531531531531531 [2020-10-16 01:40:08,783 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 418 transitions. [2020-10-16 01:40:08,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 418 transitions. [2020-10-16 01:40:08,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:08,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 418 transitions. [2020-10-16 01:40:08,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:40:08,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:40:08,787 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:40:08,787 INFO L185 Difference]: Start difference. First operand has 31 places, 19 transitions, 72 flow. Second operand 5 states and 418 transitions. [2020-10-16 01:40:08,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 124 flow [2020-10-16 01:40:08,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:40:08,790 INFO L241 Difference]: Finished difference. Result has 36 places, 25 transitions, 122 flow [2020-10-16 01:40:08,791 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2020-10-16 01:40:08,791 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2020-10-16 01:40:08,791 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 122 flow [2020-10-16 01:40:08,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:40:08,792 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:08,793 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:08,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:40:08,793 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:08,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:08,796 INFO L82 PathProgramCache]: Analyzing trace with hash 2055609306, now seen corresponding path program 1 times [2020-10-16 01:40:08,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:08,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757745641] [2020-10-16 01:40:08,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:08,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:40:08,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757745641] [2020-10-16 01:40:08,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:08,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:40:08,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840559264] [2020-10-16 01:40:08,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:40:08,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:08,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:40:08,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:40:08,885 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 111 [2020-10-16 01:40:08,886 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 122 flow. Second operand 4 states. [2020-10-16 01:40:08,886 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:08,886 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 111 [2020-10-16 01:40:08,886 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:08,955 INFO L129 PetriNetUnfolder]: 88/215 cut-off events. [2020-10-16 01:40:08,956 INFO L130 PetriNetUnfolder]: For 858/932 co-relation queries the response was YES. [2020-10-16 01:40:08,958 INFO L80 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 215 events. 88/215 cut-off events. For 858/932 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1157 event pairs, 32 based on Foata normal form. 31/226 useless extension candidates. Maximal degree in co-relation 664. Up to 136 conditions per place. [2020-10-16 01:40:08,959 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 6 selfloop transitions, 3 changer transitions 1/29 dead transitions. [2020-10-16 01:40:08,959 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 152 flow [2020-10-16 01:40:08,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:40:08,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:40:08,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2020-10-16 01:40:08,962 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7815315315315315 [2020-10-16 01:40:08,962 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 347 transitions. [2020-10-16 01:40:08,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 347 transitions. [2020-10-16 01:40:08,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:08,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 347 transitions. [2020-10-16 01:40:08,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:40:08,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:40:08,964 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:40:08,965 INFO L185 Difference]: Start difference. First operand has 36 places, 25 transitions, 122 flow. Second operand 4 states and 347 transitions. [2020-10-16 01:40:08,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 152 flow [2020-10-16 01:40:08,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 29 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:40:08,969 INFO L241 Difference]: Finished difference. Result has 39 places, 25 transitions, 128 flow [2020-10-16 01:40:08,970 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=39, PETRI_TRANSITIONS=25} [2020-10-16 01:40:08,970 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2020-10-16 01:40:08,970 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 25 transitions, 128 flow [2020-10-16 01:40:08,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:40:08,970 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:08,970 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:08,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:40:08,971 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:08,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:08,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1154321482, now seen corresponding path program 2 times [2020-10-16 01:40:08,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:08,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497605096] [2020-10-16 01:40:08,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:09,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:40:09,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497605096] [2020-10-16 01:40:09,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:09,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:40:09,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635557035] [2020-10-16 01:40:09,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:40:09,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:09,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:40:09,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:40:09,023 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 111 [2020-10-16 01:40:09,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 25 transitions, 128 flow. Second operand 5 states. [2020-10-16 01:40:09,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:09,023 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 111 [2020-10-16 01:40:09,024 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:09,088 INFO L129 PetriNetUnfolder]: 25/76 cut-off events. [2020-10-16 01:40:09,088 INFO L130 PetriNetUnfolder]: For 534/609 co-relation queries the response was YES. [2020-10-16 01:40:09,089 INFO L80 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 76 events. 25/76 cut-off events. For 534/609 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 273 event pairs, 3 based on Foata normal form. 40/112 useless extension candidates. Maximal degree in co-relation 287. Up to 52 conditions per place. [2020-10-16 01:40:09,090 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 5 selfloop transitions, 13 changer transitions 4/35 dead transitions. [2020-10-16 01:40:09,090 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 35 transitions, 230 flow [2020-10-16 01:40:09,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:40:09,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:40:09,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 584 transitions. [2020-10-16 01:40:09,093 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7516087516087516 [2020-10-16 01:40:09,093 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 584 transitions. [2020-10-16 01:40:09,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 584 transitions. [2020-10-16 01:40:09,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:09,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 584 transitions. [2020-10-16 01:40:09,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:40:09,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:40:09,097 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:40:09,097 INFO L185 Difference]: Start difference. First operand has 39 places, 25 transitions, 128 flow. Second operand 7 states and 584 transitions. [2020-10-16 01:40:09,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 35 transitions, 230 flow [2020-10-16 01:40:09,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 35 transitions, 218 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 01:40:09,101 INFO L241 Difference]: Finished difference. Result has 44 places, 31 transitions, 204 flow [2020-10-16 01:40:09,101 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=204, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2020-10-16 01:40:09,102 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2020-10-16 01:40:09,102 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 204 flow [2020-10-16 01:40:09,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:40:09,102 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:09,102 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:09,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:40:09,103 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:09,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:09,103 INFO L82 PathProgramCache]: Analyzing trace with hash 980865761, now seen corresponding path program 1 times [2020-10-16 01:40:09,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:09,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255142094] [2020-10-16 01:40:09,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:09,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:40:09,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255142094] [2020-10-16 01:40:09,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:09,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:40:09,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078804698] [2020-10-16 01:40:09,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:40:09,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:09,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:40:09,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:40:09,130 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 111 [2020-10-16 01:40:09,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 204 flow. Second operand 3 states. [2020-10-16 01:40:09,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:09,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 111 [2020-10-16 01:40:09,131 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:09,151 INFO L129 PetriNetUnfolder]: 23/87 cut-off events. [2020-10-16 01:40:09,151 INFO L130 PetriNetUnfolder]: For 512/579 co-relation queries the response was YES. [2020-10-16 01:40:09,152 INFO L80 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 87 events. 23/87 cut-off events. For 512/579 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 372 event pairs, 3 based on Foata normal form. 11/94 useless extension candidates. Maximal degree in co-relation 360. Up to 64 conditions per place. [2020-10-16 01:40:09,153 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 3 selfloop transitions, 3 changer transitions 6/31 dead transitions. [2020-10-16 01:40:09,153 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 31 transitions, 216 flow [2020-10-16 01:40:09,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:40:09,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:40:09,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2020-10-16 01:40:09,155 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8378378378378378 [2020-10-16 01:40:09,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2020-10-16 01:40:09,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2020-10-16 01:40:09,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:09,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2020-10-16 01:40:09,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:40:09,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:40:09,157 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:40:09,157 INFO L185 Difference]: Start difference. First operand has 44 places, 31 transitions, 204 flow. Second operand 3 states and 279 transitions. [2020-10-16 01:40:09,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 31 transitions, 216 flow [2020-10-16 01:40:09,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 31 transitions, 186 flow, removed 11 selfloop flow, removed 2 redundant places. [2020-10-16 01:40:09,161 INFO L241 Difference]: Finished difference. Result has 45 places, 25 transitions, 145 flow [2020-10-16 01:40:09,162 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=45, PETRI_TRANSITIONS=25} [2020-10-16 01:40:09,162 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2020-10-16 01:40:09,162 INFO L481 AbstractCegarLoop]: Abstraction has has 45 places, 25 transitions, 145 flow [2020-10-16 01:40:09,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:40:09,162 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:09,163 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:09,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:40:09,163 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:09,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:09,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1436437043, now seen corresponding path program 1 times [2020-10-16 01:40:09,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:09,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158131014] [2020-10-16 01:40:09,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:09,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:40:09,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158131014] [2020-10-16 01:40:09,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:09,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:40:09,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111572026] [2020-10-16 01:40:09,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:40:09,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:09,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:40:09,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:40:09,197 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 111 [2020-10-16 01:40:09,197 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 25 transitions, 145 flow. Second operand 4 states. [2020-10-16 01:40:09,197 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:09,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 111 [2020-10-16 01:40:09,198 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:09,234 INFO L129 PetriNetUnfolder]: 42/126 cut-off events. [2020-10-16 01:40:09,234 INFO L130 PetriNetUnfolder]: For 576/589 co-relation queries the response was YES. [2020-10-16 01:40:09,235 INFO L80 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 126 events. 42/126 cut-off events. For 576/589 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 535 event pairs, 7 based on Foata normal form. 11/131 useless extension candidates. Maximal degree in co-relation 441. Up to 62 conditions per place. [2020-10-16 01:40:09,236 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 6 selfloop transitions, 2 changer transitions 1/28 dead transitions. [2020-10-16 01:40:09,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 28 transitions, 173 flow [2020-10-16 01:40:09,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:40:09,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:40:09,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 346 transitions. [2020-10-16 01:40:09,238 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7792792792792793 [2020-10-16 01:40:09,238 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 346 transitions. [2020-10-16 01:40:09,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 346 transitions. [2020-10-16 01:40:09,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:09,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 346 transitions. [2020-10-16 01:40:09,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:40:09,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:40:09,241 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:40:09,241 INFO L185 Difference]: Start difference. First operand has 45 places, 25 transitions, 145 flow. Second operand 4 states and 346 transitions. [2020-10-16 01:40:09,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 28 transitions, 173 flow [2020-10-16 01:40:09,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 28 transitions, 160 flow, removed 5 selfloop flow, removed 4 redundant places. [2020-10-16 01:40:09,244 INFO L241 Difference]: Finished difference. Result has 42 places, 26 transitions, 145 flow [2020-10-16 01:40:09,245 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=42, PETRI_TRANSITIONS=26} [2020-10-16 01:40:09,245 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2020-10-16 01:40:09,245 INFO L481 AbstractCegarLoop]: Abstraction has has 42 places, 26 transitions, 145 flow [2020-10-16 01:40:09,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:40:09,245 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:09,245 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:09,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 01:40:09,246 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:09,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:09,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1641346049, now seen corresponding path program 2 times [2020-10-16 01:40:09,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:09,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346883200] [2020-10-16 01:40:09,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:09,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:40:09,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346883200] [2020-10-16 01:40:09,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:09,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:40:09,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041825477] [2020-10-16 01:40:09,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:40:09,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:09,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:40:09,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:40:09,279 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 111 [2020-10-16 01:40:09,280 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 26 transitions, 145 flow. Second operand 4 states. [2020-10-16 01:40:09,280 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:09,280 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 111 [2020-10-16 01:40:09,280 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:09,322 INFO L129 PetriNetUnfolder]: 48/152 cut-off events. [2020-10-16 01:40:09,323 INFO L130 PetriNetUnfolder]: For 355/374 co-relation queries the response was YES. [2020-10-16 01:40:09,324 INFO L80 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 152 events. 48/152 cut-off events. For 355/374 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 748 event pairs, 6 based on Foata normal form. 9/156 useless extension candidates. Maximal degree in co-relation 496. Up to 74 conditions per place. [2020-10-16 01:40:09,324 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 6 selfloop transitions, 2 changer transitions 5/31 dead transitions. [2020-10-16 01:40:09,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 31 transitions, 191 flow [2020-10-16 01:40:09,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:40:09,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:40:09,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 432 transitions. [2020-10-16 01:40:09,327 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7783783783783784 [2020-10-16 01:40:09,327 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 432 transitions. [2020-10-16 01:40:09,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 432 transitions. [2020-10-16 01:40:09,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:09,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 432 transitions. [2020-10-16 01:40:09,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:40:09,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:40:09,330 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:40:09,331 INFO L185 Difference]: Start difference. First operand has 42 places, 26 transitions, 145 flow. Second operand 5 states and 432 transitions. [2020-10-16 01:40:09,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 31 transitions, 191 flow [2020-10-16 01:40:09,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 31 transitions, 183 flow, removed 3 selfloop flow, removed 1 redundant places. [2020-10-16 01:40:09,333 INFO L241 Difference]: Finished difference. Result has 47 places, 25 transitions, 142 flow [2020-10-16 01:40:09,334 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=25} [2020-10-16 01:40:09,334 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2020-10-16 01:40:09,334 INFO L481 AbstractCegarLoop]: Abstraction has has 47 places, 25 transitions, 142 flow [2020-10-16 01:40:09,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:40:09,334 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:40:09,335 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:40:09,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 01:40:09,335 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:40:09,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:40:09,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1693034047, now seen corresponding path program 3 times [2020-10-16 01:40:09,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:40:09,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252590669] [2020-10-16 01:40:09,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:40:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:40:09,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:40:09,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252590669] [2020-10-16 01:40:09,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:40:09,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:40:09,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805793989] [2020-10-16 01:40:09,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:40:09,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:40:09,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:40:09,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:40:09,391 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 111 [2020-10-16 01:40:09,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 25 transitions, 142 flow. Second operand 6 states. [2020-10-16 01:40:09,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:40:09,392 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 111 [2020-10-16 01:40:09,392 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:40:09,442 INFO L129 PetriNetUnfolder]: 15/70 cut-off events. [2020-10-16 01:40:09,442 INFO L130 PetriNetUnfolder]: For 123/181 co-relation queries the response was YES. [2020-10-16 01:40:09,443 INFO L80 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 70 events. 15/70 cut-off events. For 123/181 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 269 event pairs, 0 based on Foata normal form. 29/95 useless extension candidates. Maximal degree in co-relation 257. Up to 37 conditions per place. [2020-10-16 01:40:09,443 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2020-10-16 01:40:09,444 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 27 transitions, 170 flow [2020-10-16 01:40:09,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:40:09,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:40:09,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 574 transitions. [2020-10-16 01:40:09,447 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7387387387387387 [2020-10-16 01:40:09,447 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 574 transitions. [2020-10-16 01:40:09,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 574 transitions. [2020-10-16 01:40:09,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:40:09,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 574 transitions. [2020-10-16 01:40:09,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:40:09,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:40:09,451 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:40:09,451 INFO L185 Difference]: Start difference. First operand has 47 places, 25 transitions, 142 flow. Second operand 7 states and 574 transitions. [2020-10-16 01:40:09,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 27 transitions, 170 flow [2020-10-16 01:40:09,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 27 transitions, 158 flow, removed 0 selfloop flow, removed 6 redundant places. [2020-10-16 01:40:09,453 INFO L241 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2020-10-16 01:40:09,453 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2020-10-16 01:40:09,453 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2020-10-16 01:40:09,453 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2020-10-16 01:40:09,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:40:09,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 01:40:09,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:40:09 BasicIcfg [2020-10-16 01:40:09,458 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:40:09,461 INFO L168 Benchmark]: Toolchain (without parser) took 4466.67 ms. Allocated memory was 252.7 MB in the beginning and 371.7 MB in the end (delta: 119.0 MB). Free memory was 207.0 MB in the beginning and 192.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 133.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:40:09,462 INFO L168 Benchmark]: CDTParser took 0.33 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. [2020-10-16 01:40:09,462 INFO L168 Benchmark]: CACSL2BoogieTranslator took 738.08 ms. Allocated memory was 252.7 MB in the beginning and 318.8 MB in the end (delta: 66.1 MB). Free memory was 207.0 MB in the beginning and 271.6 MB in the end (delta: -64.6 MB). Peak memory consumption was 33.1 MB. Max. memory is 14.2 GB. [2020-10-16 01:40:09,463 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.10 ms. Allocated memory is still 318.8 MB. Free memory is still 271.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:40:09,464 INFO L168 Benchmark]: Boogie Preprocessor took 28.24 ms. Allocated memory is still 318.8 MB. Free memory was 271.6 MB in the beginning and 269.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:40:09,464 INFO L168 Benchmark]: RCFGBuilder took 453.53 ms. Allocated memory is still 318.8 MB. Free memory was 269.0 MB in the beginning and 246.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. [2020-10-16 01:40:09,465 INFO L168 Benchmark]: TraceAbstraction took 3182.38 ms. Allocated memory was 318.8 MB in the beginning and 371.7 MB in the end (delta: 53.0 MB). Free memory was 246.9 MB in the beginning and 192.3 MB in the end (delta: 54.6 MB). Peak memory consumption was 107.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:40:09,469 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 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 738.08 ms. Allocated memory was 252.7 MB in the beginning and 318.8 MB in the end (delta: 66.1 MB). Free memory was 207.0 MB in the beginning and 271.6 MB in the end (delta: -64.6 MB). Peak memory consumption was 33.1 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 58.10 ms. Allocated memory is still 318.8 MB. Free memory is still 271.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.24 ms. Allocated memory is still 318.8 MB. Free memory was 271.6 MB in the beginning and 269.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 453.53 ms. Allocated memory is still 318.8 MB. Free memory was 269.0 MB in the beginning and 246.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3182.38 ms. Allocated memory was 318.8 MB in the beginning and 371.7 MB in the end (delta: 53.0 MB). Free memory was 246.9 MB in the beginning and 192.3 MB in the end (delta: 54.6 MB). Peak memory consumption was 107.5 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 576 VarBasedMoverChecksPositive, 55 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 79 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 64 PlacesBefore, 27 PlacesAfterwards, 55 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 42 TotalNumberOfCompositions, 1770 MoverChecksTotal - 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: 3.0s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 49 SDtfs, 23 SDslu, 16 SDs, 0 SdLazy, 132 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=204occurred in iteration=7, 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, 0.4s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 3822 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...