/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/safe004_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:37:17,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:37:17,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:37:17,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:37:17,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:37:17,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:37:17,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:37:17,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:37:17,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:37:17,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:37:17,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:37:17,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:37:17,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:37:17,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:37:17,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:37:17,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:37:17,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:37:17,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:37:17,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:37:17,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:37:18,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:37:18,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:37:18,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:37:18,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:37:18,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:37:18,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:37:18,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:37:18,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:37:18,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:37:18,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:37:18,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:37:18,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:37:18,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:37:18,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:37:18,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:37:18,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:37:18,037 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 01:37:18,073 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:37:18,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:37:18,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:37:18,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:37:18,075 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:37:18,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:37:18,075 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:37:18,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:37:18,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:37:18,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:37:18,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:37:18,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:37:18,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:37:18,078 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:37:18,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:37:18,078 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:37:18,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:37:18,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:37:18,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:37:18,079 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:37:18,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:37:18,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:37:18,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:37:18,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:37:18,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:37:18,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:37:18,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:37:18,080 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:37:18,081 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:37:18,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:37:18,398 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:37:18,401 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:37:18,403 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:37:18,403 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:37:18,404 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2020-10-16 01:37:18,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ff75ba76/4488887bc57449af97e4b1f355a7d332/FLAGd8aa6c664 [2020-10-16 01:37:19,008 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:37:19,009 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2020-10-16 01:37:19,025 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ff75ba76/4488887bc57449af97e4b1f355a7d332/FLAGd8aa6c664 [2020-10-16 01:37:19,337 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ff75ba76/4488887bc57449af97e4b1f355a7d332 [2020-10-16 01:37:19,346 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:37:19,348 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:37:19,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:37:19,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:37:19,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:37:19,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:37:19" (1/1) ... [2020-10-16 01:37:19,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48efa502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:19, skipping insertion in model container [2020-10-16 01:37:19,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:37:19" (1/1) ... [2020-10-16 01:37:19,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:37:19,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:37:19,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:37:19,862 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:37:19,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:37:20,020 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:37:20,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:20 WrapperNode [2020-10-16 01:37:20,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:37:20,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:37:20,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:37:20,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:37:20,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:20" (1/1) ... [2020-10-16 01:37:20,077 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:20" (1/1) ... [2020-10-16 01:37:20,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:37:20,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:37:20,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:37:20,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:37:20,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:20" (1/1) ... [2020-10-16 01:37:20,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:20" (1/1) ... [2020-10-16 01:37:20,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:20" (1/1) ... [2020-10-16 01:37:20,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:20" (1/1) ... [2020-10-16 01:37:20,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:20" (1/1) ... [2020-10-16 01:37:20,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:20" (1/1) ... [2020-10-16 01:37:20,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:20" (1/1) ... [2020-10-16 01:37:20,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:37:20,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:37:20,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:37:20,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:37:20,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:37:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:37:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:37:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:37:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:37:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:37:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:37:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:37:20,201 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:37:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:37:20,202 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:37:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:37:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:37:20,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:37:20,205 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 01:37:20,601 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:37:20,602 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:37:20,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:37:20 BoogieIcfgContainer [2020-10-16 01:37:20,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:37:20,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:37:20,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:37:20,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:37:20,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:37:19" (1/3) ... [2020-10-16 01:37:20,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3679219b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:37:20, skipping insertion in model container [2020-10-16 01:37:20,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:20" (2/3) ... [2020-10-16 01:37:20,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3679219b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:37:20, skipping insertion in model container [2020-10-16 01:37:20,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:37:20" (3/3) ... [2020-10-16 01:37:20,612 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.opt.i [2020-10-16 01:37:20,623 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:37:20,631 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:37:20,632 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:37:20,658 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,659 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,659 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,659 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,660 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,660 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,661 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,661 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,661 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,662 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,662 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,662 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,663 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,663 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,663 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,664 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,664 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,664 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,668 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,669 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,669 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,669 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,679 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,679 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,680 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,680 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,684 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,684 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,684 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,684 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:20,704 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:37:20,726 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:37:20,727 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:37:20,727 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:37:20,727 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:37:20,727 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:37:20,727 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:37:20,727 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:37:20,728 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:37:20,741 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 01:37:20,780 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-16 01:37:20,781 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:37:20,786 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 54 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 01:37:20,786 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 01:37:20,792 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 55 transitions, 119 flow [2020-10-16 01:37:20,794 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:37:20,797 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 01:37:20,800 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 01:37:20,800 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions, 119 flow [2020-10-16 01:37:20,819 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-16 01:37:20,819 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:37:20,820 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 45 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 01:37:20,822 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 01:37:22,131 INFO L132 LiptonReduction]: Checked pairs total: 1587 [2020-10-16 01:37:22,132 INFO L134 LiptonReduction]: Total number of compositions: 40 [2020-10-16 01:37:22,135 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1343 [2020-10-16 01:37:22,143 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2020-10-16 01:37:22,143 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:37:22,144 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:22,145 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:22,145 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:22,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:22,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1628105853, now seen corresponding path program 1 times [2020-10-16 01:37:22,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:22,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009152619] [2020-10-16 01:37:22,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:22,388 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 01:37:22,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009152619] [2020-10-16 01:37:22,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:22,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:37:22,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278914822] [2020-10-16 01:37:22,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:37:22,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:22,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:37:22,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:37:22,420 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 109 [2020-10-16 01:37:22,422 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states. [2020-10-16 01:37:22,422 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:22,422 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 109 [2020-10-16 01:37:22,424 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:22,447 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 01:37:22,447 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:37:22,448 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 01:37:22,449 INFO L132 encePairwiseOnDemand]: 106/109 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 01:37:22,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 49 flow [2020-10-16 01:37:22,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:37:22,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:37:22,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2020-10-16 01:37:22,466 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8654434250764526 [2020-10-16 01:37:22,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2020-10-16 01:37:22,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2020-10-16 01:37:22,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:22,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2020-10-16 01:37:22,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:37:22,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:37:22,484 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:37:22,487 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 283 transitions. [2020-10-16 01:37:22,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 49 flow [2020-10-16 01:37:22,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 17 transitions, 46 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:37:22,493 INFO L241 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2020-10-16 01:37:22,496 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2020-10-16 01:37:22,497 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 01:37:22,497 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2020-10-16 01:37:22,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:37:22,498 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:22,498 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:22,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:37:22,499 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:22,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:22,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1241645988, now seen corresponding path program 1 times [2020-10-16 01:37:22,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:22,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119094294] [2020-10-16 01:37:22,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:22,572 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 01:37:22,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119094294] [2020-10-16 01:37:22,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:22,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:37:22,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817359141] [2020-10-16 01:37:22,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:37:22,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:22,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:37:22,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:37:22,578 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 109 [2020-10-16 01:37:22,579 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states. [2020-10-16 01:37:22,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:22,579 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 109 [2020-10-16 01:37:22,580 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:22,634 INFO L129 PetriNetUnfolder]: 10/48 cut-off events. [2020-10-16 01:37:22,635 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 01:37:22,635 INFO L80 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 48 events. 10/48 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 143 event pairs, 1 based on Foata normal form. 4/51 useless extension candidates. Maximal degree in co-relation 88. Up to 15 conditions per place. [2020-10-16 01:37:22,636 INFO L132 encePairwiseOnDemand]: 104/109 looper letters, 7 selfloop transitions, 4 changer transitions 1/23 dead transitions. [2020-10-16 01:37:22,637 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 87 flow [2020-10-16 01:37:22,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:37:22,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:37:22,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 350 transitions. [2020-10-16 01:37:22,641 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8027522935779816 [2020-10-16 01:37:22,641 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 350 transitions. [2020-10-16 01:37:22,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 350 transitions. [2020-10-16 01:37:22,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:22,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 350 transitions. [2020-10-16 01:37:22,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:37:22,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:37:22,646 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:37:22,647 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 350 transitions. [2020-10-16 01:37:22,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 87 flow [2020-10-16 01:37:22,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 81 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:37:22,649 INFO L241 Difference]: Finished difference. Result has 30 places, 19 transitions, 70 flow [2020-10-16 01:37:22,649 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2020-10-16 01:37:22,650 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 01:37:22,650 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 70 flow [2020-10-16 01:37:22,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:37:22,651 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:22,651 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:22,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:37:22,651 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:22,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:22,652 INFO L82 PathProgramCache]: Analyzing trace with hash 159985724, now seen corresponding path program 1 times [2020-10-16 01:37:22,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:22,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63748952] [2020-10-16 01:37:22,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:22,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:37:22,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63748952] [2020-10-16 01:37:22,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:22,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:37:22,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114711298] [2020-10-16 01:37:22,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:37:22,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:22,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:37:22,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:37:22,731 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 109 [2020-10-16 01:37:22,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 70 flow. Second operand 4 states. [2020-10-16 01:37:22,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:22,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 109 [2020-10-16 01:37:22,733 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:22,803 INFO L129 PetriNetUnfolder]: 6/46 cut-off events. [2020-10-16 01:37:22,803 INFO L130 PetriNetUnfolder]: For 27/29 co-relation queries the response was YES. [2020-10-16 01:37:22,805 INFO L80 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 46 events. 6/46 cut-off events. For 27/29 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 139 event pairs, 1 based on Foata normal form. 5/50 useless extension candidates. Maximal degree in co-relation 107. Up to 15 conditions per place. [2020-10-16 01:37:22,806 INFO L132 encePairwiseOnDemand]: 105/109 looper letters, 7 selfloop transitions, 4 changer transitions 2/24 dead transitions. [2020-10-16 01:37:22,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 24 transitions, 120 flow [2020-10-16 01:37:22,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:37:22,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:37:22,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 434 transitions. [2020-10-16 01:37:22,810 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7963302752293578 [2020-10-16 01:37:22,810 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 434 transitions. [2020-10-16 01:37:22,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 434 transitions. [2020-10-16 01:37:22,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:22,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 434 transitions. [2020-10-16 01:37:22,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:37:22,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:37:22,815 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:37:22,815 INFO L185 Difference]: Start difference. First operand has 30 places, 19 transitions, 70 flow. Second operand 5 states and 434 transitions. [2020-10-16 01:37:22,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 24 transitions, 120 flow [2020-10-16 01:37:22,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 109 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 01:37:22,818 INFO L241 Difference]: Finished difference. Result has 36 places, 21 transitions, 99 flow [2020-10-16 01:37:22,819 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=63, 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=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=21} [2020-10-16 01:37:22,819 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2020-10-16 01:37:22,819 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 21 transitions, 99 flow [2020-10-16 01:37:22,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:37:22,819 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:22,820 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:22,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:37:22,820 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:22,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:22,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1377495595, now seen corresponding path program 1 times [2020-10-16 01:37:22,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:22,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190447245] [2020-10-16 01:37:22,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:22,898 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 01:37:22,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190447245] [2020-10-16 01:37:22,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:22,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:37:22,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211865171] [2020-10-16 01:37:22,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:37:22,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:22,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:37:22,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:37:22,902 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 109 [2020-10-16 01:37:22,902 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 21 transitions, 99 flow. Second operand 4 states. [2020-10-16 01:37:22,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:22,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 109 [2020-10-16 01:37:22,903 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:22,940 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2020-10-16 01:37:22,940 INFO L130 PetriNetUnfolder]: For 72/74 co-relation queries the response was YES. [2020-10-16 01:37:22,943 INFO L80 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 53 events. 4/53 cut-off events. For 72/74 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 182 event pairs, 0 based on Foata normal form. 5/57 useless extension candidates. Maximal degree in co-relation 139. Up to 17 conditions per place. [2020-10-16 01:37:22,944 INFO L132 encePairwiseOnDemand]: 104/109 looper letters, 7 selfloop transitions, 4 changer transitions 3/25 dead transitions. [2020-10-16 01:37:22,944 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 25 transitions, 151 flow [2020-10-16 01:37:22,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:37:22,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:37:22,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 349 transitions. [2020-10-16 01:37:22,946 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8004587155963303 [2020-10-16 01:37:22,947 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 349 transitions. [2020-10-16 01:37:22,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 349 transitions. [2020-10-16 01:37:22,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:22,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 349 transitions. [2020-10-16 01:37:22,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:37:22,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:37:22,950 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:37:22,950 INFO L185 Difference]: Start difference. First operand has 36 places, 21 transitions, 99 flow. Second operand 4 states and 349 transitions. [2020-10-16 01:37:22,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 25 transitions, 151 flow [2020-10-16 01:37:22,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 25 transitions, 127 flow, removed 6 selfloop flow, removed 4 redundant places. [2020-10-16 01:37:22,953 INFO L241 Difference]: Finished difference. Result has 34 places, 21 transitions, 96 flow [2020-10-16 01:37:22,953 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=34, PETRI_TRANSITIONS=21} [2020-10-16 01:37:22,953 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 01:37:22,954 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 96 flow [2020-10-16 01:37:22,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:37:22,954 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:22,954 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:22,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:37:22,955 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:22,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:22,955 INFO L82 PathProgramCache]: Analyzing trace with hash -2068679953, now seen corresponding path program 2 times [2020-10-16 01:37:22,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:22,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076862415] [2020-10-16 01:37:22,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:23,016 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 01:37:23,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076862415] [2020-10-16 01:37:23,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:23,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:37:23,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910744810] [2020-10-16 01:37:23,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:37:23,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:23,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:37:23,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:37:23,024 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 109 [2020-10-16 01:37:23,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 96 flow. Second operand 4 states. [2020-10-16 01:37:23,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:23,025 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 109 [2020-10-16 01:37:23,025 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:23,094 INFO L129 PetriNetUnfolder]: 63/141 cut-off events. [2020-10-16 01:37:23,095 INFO L130 PetriNetUnfolder]: For 296/340 co-relation queries the response was YES. [2020-10-16 01:37:23,096 INFO L80 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 141 events. 63/141 cut-off events. For 296/340 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 611 event pairs, 21 based on Foata normal form. 24/155 useless extension candidates. Maximal degree in co-relation 346. Up to 92 conditions per place. [2020-10-16 01:37:23,097 INFO L132 encePairwiseOnDemand]: 103/109 looper letters, 6 selfloop transitions, 4 changer transitions 7/31 dead transitions. [2020-10-16 01:37:23,097 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 31 transitions, 150 flow [2020-10-16 01:37:23,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:37:23,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:37:23,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 418 transitions. [2020-10-16 01:37:23,099 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7669724770642202 [2020-10-16 01:37:23,100 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 418 transitions. [2020-10-16 01:37:23,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 418 transitions. [2020-10-16 01:37:23,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:23,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 418 transitions. [2020-10-16 01:37:23,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:37:23,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:37:23,103 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:37:23,103 INFO L185 Difference]: Start difference. First operand has 34 places, 21 transitions, 96 flow. Second operand 5 states and 418 transitions. [2020-10-16 01:37:23,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 31 transitions, 150 flow [2020-10-16 01:37:23,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 31 transitions, 135 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 01:37:23,106 INFO L241 Difference]: Finished difference. Result has 37 places, 24 transitions, 121 flow [2020-10-16 01:37:23,106 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2020-10-16 01:37:23,106 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2020-10-16 01:37:23,106 INFO L481 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 121 flow [2020-10-16 01:37:23,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:37:23,107 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:23,107 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:23,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:37:23,107 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:23,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:23,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1023830700, now seen corresponding path program 1 times [2020-10-16 01:37:23,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:23,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132438853] [2020-10-16 01:37:23,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:23,172 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 01:37:23,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132438853] [2020-10-16 01:37:23,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:23,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:37:23,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528312628] [2020-10-16 01:37:23,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:37:23,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:23,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:37:23,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:37:23,176 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 109 [2020-10-16 01:37:23,176 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 121 flow. Second operand 5 states. [2020-10-16 01:37:23,176 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:23,176 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 109 [2020-10-16 01:37:23,176 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:23,238 INFO L129 PetriNetUnfolder]: 36/101 cut-off events. [2020-10-16 01:37:23,238 INFO L130 PetriNetUnfolder]: For 361/445 co-relation queries the response was YES. [2020-10-16 01:37:23,239 INFO L80 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 101 events. 36/101 cut-off events. For 361/445 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 399 event pairs, 3 based on Foata normal form. 38/135 useless extension candidates. Maximal degree in co-relation 368. Up to 73 conditions per place. [2020-10-16 01:37:23,240 INFO L132 encePairwiseOnDemand]: 103/109 looper letters, 6 selfloop transitions, 7 changer transitions 7/34 dead transitions. [2020-10-16 01:37:23,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 219 flow [2020-10-16 01:37:23,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:37:23,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:37:23,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 501 transitions. [2020-10-16 01:37:23,243 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7660550458715596 [2020-10-16 01:37:23,243 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 501 transitions. [2020-10-16 01:37:23,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 501 transitions. [2020-10-16 01:37:23,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:23,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 501 transitions. [2020-10-16 01:37:23,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:37:23,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:37:23,247 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:37:23,247 INFO L185 Difference]: Start difference. First operand has 37 places, 24 transitions, 121 flow. Second operand 6 states and 501 transitions. [2020-10-16 01:37:23,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 219 flow [2020-10-16 01:37:23,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 211 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 01:37:23,251 INFO L241 Difference]: Finished difference. Result has 41 places, 27 transitions, 173 flow [2020-10-16 01:37:23,251 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=41, PETRI_TRANSITIONS=27} [2020-10-16 01:37:23,252 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2020-10-16 01:37:23,252 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 27 transitions, 173 flow [2020-10-16 01:37:23,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:37:23,252 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:23,252 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:23,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:37:23,253 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:23,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:23,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1652386045, now seen corresponding path program 1 times [2020-10-16 01:37:23,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:23,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767230976] [2020-10-16 01:37:23,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:23,317 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 01:37:23,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767230976] [2020-10-16 01:37:23,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:23,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:37:23,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628484098] [2020-10-16 01:37:23,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:37:23,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:23,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:37:23,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:37:23,321 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 109 [2020-10-16 01:37:23,322 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 27 transitions, 173 flow. Second operand 6 states. [2020-10-16 01:37:23,322 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:23,322 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 109 [2020-10-16 01:37:23,322 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:23,388 INFO L129 PetriNetUnfolder]: 16/63 cut-off events. [2020-10-16 01:37:23,388 INFO L130 PetriNetUnfolder]: For 294/358 co-relation queries the response was YES. [2020-10-16 01:37:23,389 INFO L80 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 63 events. 16/63 cut-off events. For 294/358 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 199 event pairs, 0 based on Foata normal form. 33/93 useless extension candidates. Maximal degree in co-relation 270. Up to 43 conditions per place. [2020-10-16 01:37:23,389 INFO L132 encePairwiseOnDemand]: 103/109 looper letters, 3 selfloop transitions, 10 changer transitions 4/30 dead transitions. [2020-10-16 01:37:23,389 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 30 transitions, 239 flow [2020-10-16 01:37:23,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:37:23,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:37:23,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 578 transitions. [2020-10-16 01:37:23,392 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7575360419397117 [2020-10-16 01:37:23,392 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 578 transitions. [2020-10-16 01:37:23,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 578 transitions. [2020-10-16 01:37:23,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:23,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 578 transitions. [2020-10-16 01:37:23,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:37:23,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:37:23,396 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:37:23,396 INFO L185 Difference]: Start difference. First operand has 41 places, 27 transitions, 173 flow. Second operand 7 states and 578 transitions. [2020-10-16 01:37:23,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 30 transitions, 239 flow [2020-10-16 01:37:23,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 30 transitions, 199 flow, removed 16 selfloop flow, removed 4 redundant places. [2020-10-16 01:37:23,400 INFO L241 Difference]: Finished difference. Result has 44 places, 26 transitions, 171 flow [2020-10-16 01:37:23,400 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=171, PETRI_PLACES=44, PETRI_TRANSITIONS=26} [2020-10-16 01:37:23,400 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2020-10-16 01:37:23,401 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 26 transitions, 171 flow [2020-10-16 01:37:23,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:37:23,401 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:23,401 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:23,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:37:23,402 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:23,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:23,402 INFO L82 PathProgramCache]: Analyzing trace with hash -522675833, now seen corresponding path program 1 times [2020-10-16 01:37:23,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:23,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465654611] [2020-10-16 01:37:23,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:23,431 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 01:37:23,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465654611] [2020-10-16 01:37:23,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:23,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:37:23,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960756377] [2020-10-16 01:37:23,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:37:23,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:23,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:37:23,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:37:23,434 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 109 [2020-10-16 01:37:23,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 26 transitions, 171 flow. Second operand 3 states. [2020-10-16 01:37:23,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:23,435 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 109 [2020-10-16 01:37:23,435 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:23,451 INFO L129 PetriNetUnfolder]: 16/66 cut-off events. [2020-10-16 01:37:23,452 INFO L130 PetriNetUnfolder]: For 173/186 co-relation queries the response was YES. [2020-10-16 01:37:23,452 INFO L80 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 66 events. 16/66 cut-off events. For 173/186 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 216 event pairs, 0 based on Foata normal form. 3/64 useless extension candidates. Maximal degree in co-relation 222. Up to 33 conditions per place. [2020-10-16 01:37:23,453 INFO L132 encePairwiseOnDemand]: 106/109 looper letters, 2 selfloop transitions, 2 changer transitions 3/26 dead transitions. [2020-10-16 01:37:23,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 26 transitions, 171 flow [2020-10-16 01:37:23,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:37:23,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:37:23,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2020-10-16 01:37:23,455 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8532110091743119 [2020-10-16 01:37:23,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2020-10-16 01:37:23,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2020-10-16 01:37:23,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:23,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2020-10-16 01:37:23,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:37:23,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:37:23,457 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:37:23,458 INFO L185 Difference]: Start difference. First operand has 44 places, 26 transitions, 171 flow. Second operand 3 states and 279 transitions. [2020-10-16 01:37:23,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 26 transitions, 171 flow [2020-10-16 01:37:23,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 26 transitions, 127 flow, removed 14 selfloop flow, removed 7 redundant places. [2020-10-16 01:37:23,461 INFO L241 Difference]: Finished difference. Result has 38 places, 23 transitions, 112 flow [2020-10-16 01:37:23,461 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2020-10-16 01:37:23,461 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2020-10-16 01:37:23,461 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 112 flow [2020-10-16 01:37:23,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:37:23,462 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:23,462 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:23,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:37:23,462 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:23,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:23,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1197670021, now seen corresponding path program 2 times [2020-10-16 01:37:23,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:23,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068174986] [2020-10-16 01:37:23,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:23,488 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 01:37:23,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068174986] [2020-10-16 01:37:23,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:23,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:37:23,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224820822] [2020-10-16 01:37:23,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:37:23,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:23,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:37:23,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:37:23,491 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 109 [2020-10-16 01:37:23,492 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 112 flow. Second operand 3 states. [2020-10-16 01:37:23,492 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:23,492 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 109 [2020-10-16 01:37:23,492 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:23,503 INFO L129 PetriNetUnfolder]: 7/30 cut-off events. [2020-10-16 01:37:23,504 INFO L130 PetriNetUnfolder]: For 28/30 co-relation queries the response was YES. [2020-10-16 01:37:23,504 INFO L80 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 30 events. 7/30 cut-off events. For 28/30 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 2/31 useless extension candidates. Maximal degree in co-relation 77. Up to 10 conditions per place. [2020-10-16 01:37:23,504 INFO L132 encePairwiseOnDemand]: 107/109 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2020-10-16 01:37:23,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 23 transitions, 121 flow [2020-10-16 01:37:23,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:37:23,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:37:23,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2020-10-16 01:37:23,506 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8287461773700305 [2020-10-16 01:37:23,506 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2020-10-16 01:37:23,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2020-10-16 01:37:23,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:23,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2020-10-16 01:37:23,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:37:23,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:37:23,509 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:37:23,509 INFO L185 Difference]: Start difference. First operand has 38 places, 23 transitions, 112 flow. Second operand 3 states and 271 transitions. [2020-10-16 01:37:23,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 23 transitions, 121 flow [2020-10-16 01:37:23,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 23 transitions, 111 flow, removed 0 selfloop flow, removed 5 redundant places. [2020-10-16 01:37:23,510 INFO L241 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2020-10-16 01:37:23,511 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2020-10-16 01:37:23,511 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 01:37:23,511 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2020-10-16 01:37:23,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:37:23,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 01:37:23,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:37:23 BasicIcfg [2020-10-16 01:37:23,516 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:37:23,519 INFO L168 Benchmark]: Toolchain (without parser) took 4170.34 ms. Allocated memory was 254.3 MB in the beginning and 374.3 MB in the end (delta: 120.1 MB). Free memory was 207.1 MB in the beginning and 228.1 MB in the end (delta: -21.0 MB). Peak memory consumption was 99.0 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:23,520 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 254.3 MB. Free memory is still 228.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:37:23,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.45 ms. Allocated memory was 254.3 MB in the beginning and 322.4 MB in the end (delta: 68.2 MB). Free memory was 207.1 MB in the beginning and 273.3 MB in the end (delta: -66.2 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:23,522 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.53 ms. Allocated memory is still 322.4 MB. Free memory was 273.3 MB in the beginning and 270.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:23,522 INFO L168 Benchmark]: Boogie Preprocessor took 29.29 ms. Allocated memory is still 322.4 MB. Free memory was 270.8 MB in the beginning and 268.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:23,523 INFO L168 Benchmark]: RCFGBuilder took 467.52 ms. Allocated memory is still 322.4 MB. Free memory was 268.3 MB in the beginning and 246.5 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:23,524 INFO L168 Benchmark]: TraceAbstraction took 2911.23 ms. Allocated memory was 322.4 MB in the beginning and 374.3 MB in the end (delta: 51.9 MB). Free memory was 246.5 MB in the beginning and 228.1 MB in the end (delta: 18.3 MB). Peak memory consumption was 70.2 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:23,529 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 254.3 MB. Free memory is still 228.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 673.45 ms. Allocated memory was 254.3 MB in the beginning and 322.4 MB in the end (delta: 68.2 MB). Free memory was 207.1 MB in the beginning and 273.3 MB in the end (delta: -66.2 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 82.53 ms. Allocated memory is still 322.4 MB. Free memory was 273.3 MB in the beginning and 270.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 29.29 ms. Allocated memory is still 322.4 MB. Free memory was 270.8 MB in the beginning and 268.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 467.52 ms. Allocated memory is still 322.4 MB. Free memory was 268.3 MB in the beginning and 246.5 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2911.23 ms. Allocated memory was 322.4 MB in the beginning and 374.3 MB in the end (delta: 51.9 MB). Free memory was 246.5 MB in the beginning and 228.1 MB in the end (delta: 18.3 MB). Peak memory consumption was 70.2 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 550 VarBasedMoverChecksPositive, 46 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 80 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 64 PlacesBefore, 27 PlacesAfterwards, 55 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 40 TotalNumberOfCompositions, 1587 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: 2.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 40 SDtfs, 16 SDslu, 18 SDs, 0 SdLazy, 123 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=173occurred in iteration=6, 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, 0.3s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 3657 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...