/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/safe011_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:39:12,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:39:12,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:39:12,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:39:12,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:39:12,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:39:12,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:39:12,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:39:12,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:39:12,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:39:12,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:39:12,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:39:12,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:39:12,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:39:12,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:39:12,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:39:12,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:39:12,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:39:12,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:39:12,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:39:12,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:39:12,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:39:12,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:39:12,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:39:12,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:39:12,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:39:12,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:39:12,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:39:12,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:39:12,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:39:12,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:39:12,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:39:12,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:39:12,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:39:12,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:39:12,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:39:12,688 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 01:39:12,725 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:39:12,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:39:12,727 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:39:12,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:39:12,727 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:39:12,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:39:12,727 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:39:12,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:39:12,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:39:12,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:39:12,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:39:12,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:39:12,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:39:12,730 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:39:12,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:39:12,730 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:39:12,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:39:12,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:39:12,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:39:12,731 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:39:12,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:39:12,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:39:12,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:39:12,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:39:12,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:39:12,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:39:12,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:39:12,733 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:39:12,733 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:39:13,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:39:13,037 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:39:13,041 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:39:13,042 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:39:13,043 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:39:13,043 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2020-10-16 01:39:13,111 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/969af4f20/cceea97a9eed46d0a32c72bcc140d775/FLAG78ed3b432 [2020-10-16 01:39:13,712 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:39:13,712 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2020-10-16 01:39:13,727 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/969af4f20/cceea97a9eed46d0a32c72bcc140d775/FLAG78ed3b432 [2020-10-16 01:39:13,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/969af4f20/cceea97a9eed46d0a32c72bcc140d775 [2020-10-16 01:39:13,920 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:39:13,922 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:39:13,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:39:13,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:39:13,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:39:13,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:39:13" (1/1) ... [2020-10-16 01:39:13,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aaba17c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:13, skipping insertion in model container [2020-10-16 01:39:13,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:39:13" (1/1) ... [2020-10-16 01:39:13,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:39:13,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:39:14,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:39:14,453 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:39:14,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:39:14,698 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:39:14,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:14 WrapperNode [2020-10-16 01:39:14,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:39:14,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:39:14,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:39:14,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:39:14,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:14" (1/1) ... [2020-10-16 01:39:14,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:14" (1/1) ... [2020-10-16 01:39:14,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:39:14,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:39:14,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:39:14,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:39:14,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:14" (1/1) ... [2020-10-16 01:39:14,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:14" (1/1) ... [2020-10-16 01:39:14,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:14" (1/1) ... [2020-10-16 01:39:14,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:14" (1/1) ... [2020-10-16 01:39:14,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:14" (1/1) ... [2020-10-16 01:39:14,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:14" (1/1) ... [2020-10-16 01:39:14,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:14" (1/1) ... [2020-10-16 01:39:14,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:39:14,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:39:14,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:39:14,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:39:14,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:14" (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 01:39:14,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:39:14,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:39:14,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:39:14,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:39:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:39:14,859 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:39:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:39:14,859 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:39:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:39:14,859 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:39:14,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:39:14,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:39:14,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:39:14,867 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 01:39:15,233 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:39:15,234 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:39:15,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:39:15 BoogieIcfgContainer [2020-10-16 01:39:15,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:39:15,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:39:15,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:39:15,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:39:15,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:39:13" (1/3) ... [2020-10-16 01:39:15,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecef2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:39:15, skipping insertion in model container [2020-10-16 01:39:15,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:14" (2/3) ... [2020-10-16 01:39:15,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecef2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:39:15, skipping insertion in model container [2020-10-16 01:39:15,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:39:15" (3/3) ... [2020-10-16 01:39:15,245 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.opt.i [2020-10-16 01:39:15,257 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:39:15,265 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:39:15,266 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:39:15,291 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,292 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,292 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,292 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,296 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,296 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,296 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,297 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,297 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,297 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,297 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,298 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,298 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,298 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,298 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,299 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,299 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,302 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,303 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,303 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,303 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,311 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,311 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,312 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,312 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,316 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,316 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,316 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,316 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:15,334 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:39:15,356 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:39:15,356 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:39:15,356 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:39:15,356 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:39:15,357 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:39:15,357 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:39:15,357 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:39:15,357 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:39:15,372 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 01:39:15,412 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-16 01:39:15,413 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:39:15,418 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 01:39:15,418 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 01:39:15,424 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 55 transitions, 119 flow [2020-10-16 01:39:15,427 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:39:15,429 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 01:39:15,431 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 01:39:15,432 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions, 119 flow [2020-10-16 01:39:15,450 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-16 01:39:15,450 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:39:15,451 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 46 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 01:39:15,453 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 01:39:16,948 INFO L132 LiptonReduction]: Checked pairs total: 1700 [2020-10-16 01:39:16,948 INFO L134 LiptonReduction]: Total number of compositions: 43 [2020-10-16 01:39:16,951 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1526 [2020-10-16 01:39:16,960 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-10-16 01:39:16,960 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:39:16,961 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:16,962 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:16,962 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:16,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:16,968 INFO L82 PathProgramCache]: Analyzing trace with hash -304121032, now seen corresponding path program 1 times [2020-10-16 01:39:16,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:16,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005868098] [2020-10-16 01:39:16,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:17,144 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 01:39:17,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005868098] [2020-10-16 01:39:17,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:17,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:39:17,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474284406] [2020-10-16 01:39:17,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 01:39:17,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:17,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 01:39:17,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 01:39:17,184 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 112 [2020-10-16 01:39:17,187 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand 2 states. [2020-10-16 01:39:17,187 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:17,187 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 112 [2020-10-16 01:39:17,189 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:17,200 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 01:39:17,200 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:39:17,201 INFO L80 FinitePrefix]: Finished finitePrefix Result has 28 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 15 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2020-10-16 01:39:17,202 INFO L132 encePairwiseOnDemand]: 111/112 looper letters, 0 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2020-10-16 01:39:17,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 43 flow [2020-10-16 01:39:17,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 01:39:17,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-16 01:39:17,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 213 transitions. [2020-10-16 01:39:17,221 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.9508928571428571 [2020-10-16 01:39:17,223 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 213 transitions. [2020-10-16 01:39:17,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 213 transitions. [2020-10-16 01:39:17,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:17,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 213 transitions. [2020-10-16 01:39:17,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-16 01:39:17,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-16 01:39:17,240 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-16 01:39:17,244 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 2 states and 213 transitions. [2020-10-16 01:39:17,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 43 flow [2020-10-16 01:39:17,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 40 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:39:17,250 INFO L241 Difference]: Finished difference. Result has 25 places, 17 transitions, 40 flow [2020-10-16 01:39:17,255 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2020-10-16 01:39:17,256 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2020-10-16 01:39:17,256 INFO L481 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 40 flow [2020-10-16 01:39:17,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 01:39:17,257 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:17,257 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:17,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:39:17,258 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:17,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:17,258 INFO L82 PathProgramCache]: Analyzing trace with hash -837817873, now seen corresponding path program 1 times [2020-10-16 01:39:17,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:17,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342437824] [2020-10-16 01:39:17,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:17,354 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 01:39:17,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342437824] [2020-10-16 01:39:17,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:17,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:39:17,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364401250] [2020-10-16 01:39:17,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:39:17,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:17,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:39:17,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:39:17,361 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 112 [2020-10-16 01:39:17,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states. [2020-10-16 01:39:17,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:17,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 112 [2020-10-16 01:39:17,362 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:17,392 INFO L129 PetriNetUnfolder]: 3/25 cut-off events. [2020-10-16 01:39:17,392 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:39:17,393 INFO L80 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 25 events. 3/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 1 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 41. Up to 10 conditions per place. [2020-10-16 01:39:17,394 INFO L132 encePairwiseOnDemand]: 108/112 looper letters, 3 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2020-10-16 01:39:17,394 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 19 transitions, 56 flow [2020-10-16 01:39:17,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:39:17,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:39:17,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2020-10-16 01:39:17,402 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8690476190476191 [2020-10-16 01:39:17,402 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2020-10-16 01:39:17,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2020-10-16 01:39:17,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:17,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2020-10-16 01:39:17,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:39:17,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:39:17,411 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:39:17,411 INFO L185 Difference]: Start difference. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states and 292 transitions. [2020-10-16 01:39:17,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 19 transitions, 56 flow [2020-10-16 01:39:17,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 56 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 01:39:17,416 INFO L241 Difference]: Finished difference. Result has 28 places, 19 transitions, 59 flow [2020-10-16 01:39:17,417 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=25, 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=28, PETRI_TRANSITIONS=19} [2020-10-16 01:39:17,418 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2020-10-16 01:39:17,418 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 59 flow [2020-10-16 01:39:17,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:39:17,418 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:17,418 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:17,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:39:17,419 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:17,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:17,419 INFO L82 PathProgramCache]: Analyzing trace with hash -202550729, now seen corresponding path program 1 times [2020-10-16 01:39:17,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:17,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85825713] [2020-10-16 01:39:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:17,507 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 01:39:17,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85825713] [2020-10-16 01:39:17,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:17,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:39:17,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549199256] [2020-10-16 01:39:17,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:39:17,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:17,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:39:17,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:39:17,512 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 112 [2020-10-16 01:39:17,512 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions, 59 flow. Second operand 3 states. [2020-10-16 01:39:17,512 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:17,512 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 112 [2020-10-16 01:39:17,513 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:17,525 INFO L129 PetriNetUnfolder]: 3/24 cut-off events. [2020-10-16 01:39:17,525 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 01:39:17,526 INFO L80 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 24 events. 3/24 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 32 event pairs, 1 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 47. Up to 10 conditions per place. [2020-10-16 01:39:17,526 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 1 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2020-10-16 01:39:17,527 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 19 transitions, 65 flow [2020-10-16 01:39:17,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:39:17,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:39:17,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2020-10-16 01:39:17,530 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8511904761904762 [2020-10-16 01:39:17,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2020-10-16 01:39:17,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2020-10-16 01:39:17,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:17,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2020-10-16 01:39:17,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:39:17,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:39:17,533 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:39:17,533 INFO L185 Difference]: Start difference. First operand has 28 places, 19 transitions, 59 flow. Second operand 3 states and 286 transitions. [2020-10-16 01:39:17,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 19 transitions, 65 flow [2020-10-16 01:39:17,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 19 transitions, 62 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:39:17,535 INFO L241 Difference]: Finished difference. Result has 30 places, 19 transitions, 64 flow [2020-10-16 01:39:17,535 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=56, 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=64, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2020-10-16 01:39:17,535 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 01:39:17,536 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 64 flow [2020-10-16 01:39:17,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:39:17,536 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:17,536 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:17,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:39:17,537 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:17,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:17,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1984110550, now seen corresponding path program 1 times [2020-10-16 01:39:17,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:17,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051831603] [2020-10-16 01:39:17,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:17,578 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 01:39:17,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051831603] [2020-10-16 01:39:17,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:17,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:39:17,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365692644] [2020-10-16 01:39:17,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:39:17,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:17,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:39:17,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:39:17,583 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 112 [2020-10-16 01:39:17,583 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 64 flow. Second operand 4 states. [2020-10-16 01:39:17,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:17,584 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 112 [2020-10-16 01:39:17,584 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:17,619 INFO L129 PetriNetUnfolder]: 4/32 cut-off events. [2020-10-16 01:39:17,619 INFO L130 PetriNetUnfolder]: For 25/27 co-relation queries the response was YES. [2020-10-16 01:39:17,620 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 32 events. 4/32 cut-off events. For 25/27 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 63 event pairs, 1 based on Foata normal form. 5/37 useless extension candidates. Maximal degree in co-relation 67. Up to 13 conditions per place. [2020-10-16 01:39:17,620 INFO L132 encePairwiseOnDemand]: 108/112 looper letters, 1 selfloop transitions, 3 changer transitions 1/20 dead transitions. [2020-10-16 01:39:17,620 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 20 transitions, 79 flow [2020-10-16 01:39:17,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:39:17,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:39:17,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 367 transitions. [2020-10-16 01:39:17,643 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8191964285714286 [2020-10-16 01:39:17,643 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 367 transitions. [2020-10-16 01:39:17,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 367 transitions. [2020-10-16 01:39:17,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:17,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 367 transitions. [2020-10-16 01:39:17,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:39:17,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:39:17,651 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:39:17,651 INFO L185 Difference]: Start difference. First operand has 30 places, 19 transitions, 64 flow. Second operand 4 states and 367 transitions. [2020-10-16 01:39:17,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 20 transitions, 79 flow [2020-10-16 01:39:17,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 20 transitions, 73 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:39:17,656 INFO L241 Difference]: Finished difference. Result has 33 places, 19 transitions, 74 flow [2020-10-16 01:39:17,657 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=33, PETRI_TRANSITIONS=19} [2020-10-16 01:39:17,657 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2020-10-16 01:39:17,657 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 74 flow [2020-10-16 01:39:17,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:39:17,657 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:17,657 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:17,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:39:17,658 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:17,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:17,658 INFO L82 PathProgramCache]: Analyzing trace with hash 235072970, now seen corresponding path program 1 times [2020-10-16 01:39:17,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:17,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288098611] [2020-10-16 01:39:17,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:17,709 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 01:39:17,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288098611] [2020-10-16 01:39:17,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:17,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:39:17,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524666607] [2020-10-16 01:39:17,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:39:17,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:17,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:39:17,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:39:17,713 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 01:39:17,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 19 transitions, 74 flow. Second operand 4 states. [2020-10-16 01:39:17,714 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:17,714 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 01:39:17,714 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:17,759 INFO L129 PetriNetUnfolder]: 42/96 cut-off events. [2020-10-16 01:39:17,759 INFO L130 PetriNetUnfolder]: For 255/289 co-relation queries the response was YES. [2020-10-16 01:39:17,760 INFO L80 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 96 events. 42/96 cut-off events. For 255/289 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 346 event pairs, 7 based on Foata normal form. 15/101 useless extension candidates. Maximal degree in co-relation 248. Up to 46 conditions per place. [2020-10-16 01:39:17,761 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 8 selfloop transitions, 5 changer transitions 0/26 dead transitions. [2020-10-16 01:39:17,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 114 flow [2020-10-16 01:39:17,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:39:17,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:39:17,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 339 transitions. [2020-10-16 01:39:17,763 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7566964285714286 [2020-10-16 01:39:17,764 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 339 transitions. [2020-10-16 01:39:17,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 339 transitions. [2020-10-16 01:39:17,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:17,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 339 transitions. [2020-10-16 01:39:17,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:39:17,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:39:17,766 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:39:17,766 INFO L185 Difference]: Start difference. First operand has 33 places, 19 transitions, 74 flow. Second operand 4 states and 339 transitions. [2020-10-16 01:39:17,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 114 flow [2020-10-16 01:39:17,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 102 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 01:39:17,768 INFO L241 Difference]: Finished difference. Result has 34 places, 23 transitions, 100 flow [2020-10-16 01:39:17,769 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=62, 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=4, PETRI_FLOW=100, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2020-10-16 01:39:17,769 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 01:39:17,769 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 100 flow [2020-10-16 01:39:17,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:39:17,769 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:17,769 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:17,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:39:17,770 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:17,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:17,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1632896601, now seen corresponding path program 1 times [2020-10-16 01:39:17,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:17,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033379805] [2020-10-16 01:39:17,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:17,820 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 01:39:17,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033379805] [2020-10-16 01:39:17,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:17,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:39:17,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249949769] [2020-10-16 01:39:17,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:39:17,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:17,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:39:17,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:39:17,824 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 01:39:17,824 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 100 flow. Second operand 5 states. [2020-10-16 01:39:17,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:17,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 01:39:17,825 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:17,887 INFO L129 PetriNetUnfolder]: 27/79 cut-off events. [2020-10-16 01:39:17,888 INFO L130 PetriNetUnfolder]: For 157/346 co-relation queries the response was YES. [2020-10-16 01:39:17,890 INFO L80 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 79 events. 27/79 cut-off events. For 157/346 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 268 event pairs, 1 based on Foata normal form. 25/94 useless extension candidates. Maximal degree in co-relation 257. Up to 54 conditions per place. [2020-10-16 01:39:17,890 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 9 selfloop transitions, 8 changer transitions 0/30 dead transitions. [2020-10-16 01:39:17,890 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 30 transitions, 163 flow [2020-10-16 01:39:17,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:39:17,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:39:17,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 424 transitions. [2020-10-16 01:39:17,893 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7571428571428571 [2020-10-16 01:39:17,893 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 424 transitions. [2020-10-16 01:39:17,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 424 transitions. [2020-10-16 01:39:17,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:17,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 424 transitions. [2020-10-16 01:39:17,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:39:17,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:39:17,896 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:39:17,896 INFO L185 Difference]: Start difference. First operand has 34 places, 23 transitions, 100 flow. Second operand 5 states and 424 transitions. [2020-10-16 01:39:17,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 30 transitions, 163 flow [2020-10-16 01:39:17,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 30 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:39:17,899 INFO L241 Difference]: Finished difference. Result has 39 places, 27 transitions, 152 flow [2020-10-16 01:39:17,899 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2020-10-16 01:39:17,899 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2020-10-16 01:39:17,899 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 152 flow [2020-10-16 01:39:17,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:39:17,900 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:17,900 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:17,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:39:17,900 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:17,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:17,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1347403160, now seen corresponding path program 1 times [2020-10-16 01:39:17,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:17,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438303244] [2020-10-16 01:39:17,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:17,924 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 01:39:17,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438303244] [2020-10-16 01:39:17,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:17,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:39:17,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546357502] [2020-10-16 01:39:17,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:39:17,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:17,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:39:17,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:39:17,928 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 112 [2020-10-16 01:39:17,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 152 flow. Second operand 3 states. [2020-10-16 01:39:17,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:17,928 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 112 [2020-10-16 01:39:17,928 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:17,950 INFO L129 PetriNetUnfolder]: 33/101 cut-off events. [2020-10-16 01:39:17,950 INFO L130 PetriNetUnfolder]: For 300/419 co-relation queries the response was YES. [2020-10-16 01:39:17,951 INFO L80 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 101 events. 33/101 cut-off events. For 300/419 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 433 event pairs, 1 based on Foata normal form. 12/100 useless extension candidates. Maximal degree in co-relation 369. Up to 74 conditions per place. [2020-10-16 01:39:17,952 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 3 selfloop transitions, 3 changer transitions 2/27 dead transitions. [2020-10-16 01:39:17,952 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 27 transitions, 164 flow [2020-10-16 01:39:17,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:39:17,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:39:17,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 291 transitions. [2020-10-16 01:39:17,954 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8660714285714286 [2020-10-16 01:39:17,954 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 291 transitions. [2020-10-16 01:39:17,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 291 transitions. [2020-10-16 01:39:17,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:17,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 291 transitions. [2020-10-16 01:39:17,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:39:17,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:39:17,956 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:39:17,956 INFO L185 Difference]: Start difference. First operand has 39 places, 27 transitions, 152 flow. Second operand 3 states and 291 transitions. [2020-10-16 01:39:17,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 27 transitions, 164 flow [2020-10-16 01:39:17,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 27 transitions, 152 flow, removed 3 selfloop flow, removed 2 redundant places. [2020-10-16 01:39:17,960 INFO L241 Difference]: Finished difference. Result has 40 places, 25 transitions, 141 flow [2020-10-16 01:39:17,960 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2020-10-16 01:39:17,960 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2020-10-16 01:39:17,961 INFO L481 AbstractCegarLoop]: Abstraction has has 40 places, 25 transitions, 141 flow [2020-10-16 01:39:17,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:39:17,961 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:17,961 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:17,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:39:17,961 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:17,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:17,962 INFO L82 PathProgramCache]: Analyzing trace with hash -801127445, now seen corresponding path program 1 times [2020-10-16 01:39:17,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:17,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075797350] [2020-10-16 01:39:17,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:17,991 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 01:39:17,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075797350] [2020-10-16 01:39:17,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:17,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:39:17,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593860632] [2020-10-16 01:39:17,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:39:17,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:17,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:39:17,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:39:17,994 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 112 [2020-10-16 01:39:17,995 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 25 transitions, 141 flow. Second operand 3 states. [2020-10-16 01:39:17,995 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:17,995 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 112 [2020-10-16 01:39:17,995 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:18,015 INFO L129 PetriNetUnfolder]: 15/70 cut-off events. [2020-10-16 01:39:18,015 INFO L130 PetriNetUnfolder]: For 186/202 co-relation queries the response was YES. [2020-10-16 01:39:18,016 INFO L80 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 70 events. 15/70 cut-off events. For 186/202 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 241 event pairs, 0 based on Foata normal form. 8/75 useless extension candidates. Maximal degree in co-relation 217. Up to 32 conditions per place. [2020-10-16 01:39:18,016 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 3 selfloop transitions, 2 changer transitions 1/26 dead transitions. [2020-10-16 01:39:18,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 26 transitions, 153 flow [2020-10-16 01:39:18,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:39:18,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:39:18,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2020-10-16 01:39:18,018 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8392857142857143 [2020-10-16 01:39:18,018 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2020-10-16 01:39:18,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2020-10-16 01:39:18,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:18,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2020-10-16 01:39:18,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:39:18,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:39:18,020 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:39:18,020 INFO L185 Difference]: Start difference. First operand has 40 places, 25 transitions, 141 flow. Second operand 3 states and 282 transitions. [2020-10-16 01:39:18,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 26 transitions, 153 flow [2020-10-16 01:39:18,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 26 transitions, 132 flow, removed 3 selfloop flow, removed 4 redundant places. [2020-10-16 01:39:18,023 INFO L241 Difference]: Finished difference. Result has 39 places, 25 transitions, 126 flow [2020-10-16 01:39:18,023 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=36, 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=3, PETRI_FLOW=126, PETRI_PLACES=39, PETRI_TRANSITIONS=25} [2020-10-16 01:39:18,023 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2020-10-16 01:39:18,024 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 25 transitions, 126 flow [2020-10-16 01:39:18,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:39:18,024 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:18,024 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:18,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:39:18,024 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:18,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:18,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1401256121, now seen corresponding path program 2 times [2020-10-16 01:39:18,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:18,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893917380] [2020-10-16 01:39:18,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:18,070 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 01:39:18,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893917380] [2020-10-16 01:39:18,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:18,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:39:18,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578172580] [2020-10-16 01:39:18,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:39:18,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:18,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:39:18,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:39:18,074 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 01:39:18,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 25 transitions, 126 flow. Second operand 6 states. [2020-10-16 01:39:18,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:18,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 01:39:18,074 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:18,148 INFO L129 PetriNetUnfolder]: 15/70 cut-off events. [2020-10-16 01:39:18,148 INFO L130 PetriNetUnfolder]: For 106/165 co-relation queries the response was YES. [2020-10-16 01:39:18,149 INFO L80 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 70 events. 15/70 cut-off events. For 106/165 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 269 event pairs, 0 based on Foata normal form. 24/91 useless extension candidates. Maximal degree in co-relation 223. Up to 31 conditions per place. [2020-10-16 01:39:18,149 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2020-10-16 01:39:18,149 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 25 transitions, 137 flow [2020-10-16 01:39:18,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:39:18,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:39:18,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 498 transitions. [2020-10-16 01:39:18,151 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7410714285714286 [2020-10-16 01:39:18,152 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 498 transitions. [2020-10-16 01:39:18,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 498 transitions. [2020-10-16 01:39:18,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:18,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 498 transitions. [2020-10-16 01:39:18,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:39:18,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:39:18,155 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:39:18,155 INFO L185 Difference]: Start difference. First operand has 39 places, 25 transitions, 126 flow. Second operand 6 states and 498 transitions. [2020-10-16 01:39:18,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 25 transitions, 137 flow [2020-10-16 01:39:18,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 25 transitions, 130 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:39:18,157 INFO L241 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2020-10-16 01:39:18,157 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=35, 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=6, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2020-10-16 01:39:18,157 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2020-10-16 01:39:18,157 INFO L481 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2020-10-16 01:39:18,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:39:18,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 01:39:18,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:39:18 BasicIcfg [2020-10-16 01:39:18,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:39:18,165 INFO L168 Benchmark]: Toolchain (without parser) took 4242.20 ms. Allocated memory was 244.3 MB in the beginning and 363.9 MB in the end (delta: 119.5 MB). Free memory was 199.7 MB in the beginning and 242.7 MB in the end (delta: -43.0 MB). Peak memory consumption was 76.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:39:18,165 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 244.3 MB. Free memory is still 220.7 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:39:18,166 INFO L168 Benchmark]: CACSL2BoogieTranslator took 776.48 ms. Allocated memory was 244.3 MB in the beginning and 294.1 MB in the end (delta: 49.8 MB). Free memory was 199.7 MB in the beginning and 249.0 MB in the end (delta: -49.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 14.2 GB. [2020-10-16 01:39:18,167 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.43 ms. Allocated memory is still 294.1 MB. Free memory was 249.0 MB in the beginning and 246.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:39:18,168 INFO L168 Benchmark]: Boogie Preprocessor took 31.63 ms. Allocated memory is still 294.1 MB. Free memory was 246.5 MB in the beginning and 243.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:39:18,168 INFO L168 Benchmark]: RCFGBuilder took 448.83 ms. Allocated memory is still 294.1 MB. Free memory was 243.9 MB in the beginning and 222.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:39:18,169 INFO L168 Benchmark]: TraceAbstraction took 2924.30 ms. Allocated memory was 294.1 MB in the beginning and 363.9 MB in the end (delta: 69.7 MB). Free memory was 222.1 MB in the beginning and 242.7 MB in the end (delta: -20.6 MB). Peak memory consumption was 49.1 MB. Max. memory is 14.2 GB. [2020-10-16 01:39:18,173 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 244.3 MB. Free memory is still 220.7 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 776.48 ms. Allocated memory was 244.3 MB in the beginning and 294.1 MB in the end (delta: 49.8 MB). Free memory was 199.7 MB in the beginning and 249.0 MB in the end (delta: -49.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 55.43 ms. Allocated memory is still 294.1 MB. Free memory was 249.0 MB in the beginning and 246.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 31.63 ms. Allocated memory is still 294.1 MB. Free memory was 246.5 MB in the beginning and 243.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 448.83 ms. Allocated memory is still 294.1 MB. Free memory was 243.9 MB in the beginning and 222.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2924.30 ms. Allocated memory was 294.1 MB in the beginning and 363.9 MB in the end (delta: 69.7 MB). Free memory was 222.1 MB in the beginning and 242.7 MB in the end (delta: -20.6 MB). Peak memory consumption was 49.1 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 621 VarBasedMoverChecksPositive, 56 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 46 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 95 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 64 PlacesBefore, 27 PlacesAfterwards, 55 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 43 TotalNumberOfCompositions, 1700 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: 2.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 31 SDtfs, 7 SDslu, 10 SDs, 0 SdLazy, 62 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred 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, 0.2s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 2556 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...