/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:43:17,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:43:17,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:43:17,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:43:17,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:43:17,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:43:17,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:43:17,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:43:17,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:43:17,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:43:17,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:43:17,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:43:17,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:43:17,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:43:17,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:43:17,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:43:17,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:43:17,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:43:17,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:43:17,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:43:17,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:43:17,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:43:17,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:43:17,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:43:17,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:43:17,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:43:17,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:43:17,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:43:17,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:43:17,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:43:17,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:43:17,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:43:17,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:43:17,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:43:17,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:43:17,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:43:17,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:43:17,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:43:17,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:43:17,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:43:17,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:43:17,469 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 18:43:17,503 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:43:17,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:43:17,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:43:17,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:43:17,505 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:43:17,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:43:17,506 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:43:17,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:43:17,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:43:17,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:43:17,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:43:17,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:43:17,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:43:17,508 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:43:17,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:43:17,509 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:43:17,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:43:17,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:43:17,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:43:17,510 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:43:17,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:43:17,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:43:17,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:43:17,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:43:17,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:43:17,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:43:17,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:43:17,512 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:43:17,512 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:43:17,512 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:43:17,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:43:17,802 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:43:17,806 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:43:17,807 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:43:17,809 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:43:17,810 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.opt.i [2020-10-11 18:43:17,869 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72834b3c0/35036619a7a343c5927efd7090e0a158/FLAG1d04e5b5a [2020-10-11 18:43:18,409 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:43:18,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_pso.opt.i [2020-10-11 18:43:18,423 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72834b3c0/35036619a7a343c5927efd7090e0a158/FLAG1d04e5b5a [2020-10-11 18:43:18,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72834b3c0/35036619a7a343c5927efd7090e0a158 [2020-10-11 18:43:18,697 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:43:18,699 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:43:18,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:43:18,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:43:18,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:43:18,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:43:18" (1/1) ... [2020-10-11 18:43:18,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@416d0f7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:43:18, skipping insertion in model container [2020-10-11 18:43:18,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:43:18" (1/1) ... [2020-10-11 18:43:18,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:43:18,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:43:19,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:43:19,166 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:43:19,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:43:19,304 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:43:19,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:43:19 WrapperNode [2020-10-11 18:43:19,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:43:19,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:43:19,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:43:19,306 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:43:19,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:43:19" (1/1) ... [2020-10-11 18:43:19,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:43:19" (1/1) ... [2020-10-11 18:43:19,351 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:43:19,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:43:19,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:43:19,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:43:19,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:43:19" (1/1) ... [2020-10-11 18:43:19,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:43:19" (1/1) ... [2020-10-11 18:43:19,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:43:19" (1/1) ... [2020-10-11 18:43:19,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:43:19" (1/1) ... [2020-10-11 18:43:19,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:43:19" (1/1) ... [2020-10-11 18:43:19,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:43:19" (1/1) ... [2020-10-11 18:43:19,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:43:19" (1/1) ... [2020-10-11 18:43:19,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:43:19,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:43:19,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:43:19,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:43:19,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:43:19" (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 [2020-10-11 18:43:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:43:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:43:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:43:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:43:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:43:19,453 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:43:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:43:19,453 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:43:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 18:43:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 18:43:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:43:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:43:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:43:19,456 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 18:43:19,792 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:43:19,792 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:43:19,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:43:19 BoogieIcfgContainer [2020-10-11 18:43:19,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:43:19,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:43:19,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:43:19,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:43:19,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:43:18" (1/3) ... [2020-10-11 18:43:19,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf9e473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:43:19, skipping insertion in model container [2020-10-11 18:43:19,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:43:19" (2/3) ... [2020-10-11 18:43:19,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf9e473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:43:19, skipping insertion in model container [2020-10-11 18:43:19,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:43:19" (3/3) ... [2020-10-11 18:43:19,803 INFO L111 eAbstractionObserver]: Analyzing ICFG safe028_pso.opt.i [2020-10-11 18:43:19,811 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:43:19,818 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:43:19,819 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:43:19,843 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,843 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,843 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,844 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,844 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,844 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,845 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,848 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,848 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,849 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,849 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,849 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,850 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,850 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,850 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,850 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,851 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,851 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,854 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,855 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,855 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,855 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,861 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,861 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,861 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,861 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,866 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,866 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,867 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,867 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:43:19,887 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 18:43:19,904 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:43:19,904 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:43:19,905 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:43:19,905 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:43:19,905 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:43:19,905 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:43:19,905 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:43:19,905 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:43:19,916 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-11 18:43:19,953 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-11 18:43:19,954 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:43:19,958 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 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-11 18:43:19,959 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 153 flow [2020-10-11 18:43:19,964 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 55 transitions, 119 flow [2020-10-11 18:43:19,987 INFO L129 PetriNetUnfolder]: 1/54 cut-off events. [2020-10-11 18:43:19,987 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:43:19,987 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:43:19,988 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:43:19,989 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:43:19,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:43:19,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1749580001, now seen corresponding path program 1 times [2020-10-11 18:43:20,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:43:20,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865469282] [2020-10-11 18:43:20,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:43:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:43:20,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:43:20,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865469282] [2020-10-11 18:43:20,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:43:20,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:43:20,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672572061] [2020-10-11 18:43:20,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:43:20,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:43:20,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:43:20,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:43:20,614 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 69 [2020-10-11 18:43:20,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 119 flow. Second operand 6 states. [2020-10-11 18:43:20,617 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:43:20,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 69 [2020-10-11 18:43:20,618 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:43:20,786 INFO L129 PetriNetUnfolder]: 3/77 cut-off events. [2020-10-11 18:43:20,786 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:43:20,787 INFO L80 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 77 events. 3/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 4/80 useless extension candidates. Maximal degree in co-relation 82. Up to 7 conditions per place. [2020-10-11 18:43:20,789 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 6 selfloop transitions, 2 changer transitions 11/64 dead transitions. [2020-10-11 18:43:20,789 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 64 transitions, 173 flow [2020-10-11 18:43:20,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:43:20,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:43:20,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 553 transitions. [2020-10-11 18:43:20,807 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8904991948470209 [2020-10-11 18:43:20,808 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 553 transitions. [2020-10-11 18:43:20,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 553 transitions. [2020-10-11 18:43:20,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:43:20,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 553 transitions. [2020-10-11 18:43:20,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:43:20,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:43:20,828 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:43:20,830 INFO L185 Difference]: Start difference. First operand has 64 places, 55 transitions, 119 flow. Second operand 9 states and 553 transitions. [2020-10-11 18:43:20,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 64 transitions, 173 flow [2020-10-11 18:43:20,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 64 transitions, 170 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-11 18:43:20,839 INFO L241 Difference]: Finished difference. Result has 76 places, 53 transitions, 132 flow [2020-10-11 18:43:20,842 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=132, PETRI_PLACES=76, PETRI_TRANSITIONS=53} [2020-10-11 18:43:20,843 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 12 predicate places. [2020-10-11 18:43:20,843 INFO L481 AbstractCegarLoop]: Abstraction has has 76 places, 53 transitions, 132 flow [2020-10-11 18:43:20,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:43:20,843 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:43:20,844 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:43:20,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:43:20,844 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:43:20,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:43:20,845 INFO L82 PathProgramCache]: Analyzing trace with hash 84477762, now seen corresponding path program 1 times [2020-10-11 18:43:20,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:43:20,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225276093] [2020-10-11 18:43:20,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:43:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:43:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:43:21,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225276093] [2020-10-11 18:43:21,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:43:21,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:43:21,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657015566] [2020-10-11 18:43:21,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:43:21,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:43:21,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:43:21,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:43:21,277 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 69 [2020-10-11 18:43:21,277 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 53 transitions, 132 flow. Second operand 7 states. [2020-10-11 18:43:21,277 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:43:21,278 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 69 [2020-10-11 18:43:21,278 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:43:21,431 INFO L129 PetriNetUnfolder]: 4/74 cut-off events. [2020-10-11 18:43:21,431 INFO L130 PetriNetUnfolder]: For 17/24 co-relation queries the response was YES. [2020-10-11 18:43:21,432 INFO L80 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 74 events. 4/74 cut-off events. For 17/24 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 116 event pairs, 0 based on Foata normal form. 2/76 useless extension candidates. Maximal degree in co-relation 121. Up to 7 conditions per place. [2020-10-11 18:43:21,432 INFO L132 encePairwiseOnDemand]: 61/69 looper letters, 6 selfloop transitions, 4 changer transitions 12/65 dead transitions. [2020-10-11 18:43:21,433 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 65 transitions, 223 flow [2020-10-11 18:43:21,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:43:21,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:43:21,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 594 transitions. [2020-10-11 18:43:21,436 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8608695652173913 [2020-10-11 18:43:21,436 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 594 transitions. [2020-10-11 18:43:21,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 594 transitions. [2020-10-11 18:43:21,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:43:21,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 594 transitions. [2020-10-11 18:43:21,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:43:21,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:43:21,440 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:43:21,440 INFO L185 Difference]: Start difference. First operand has 76 places, 53 transitions, 132 flow. Second operand 10 states and 594 transitions. [2020-10-11 18:43:21,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 65 transitions, 223 flow [2020-10-11 18:43:21,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 65 transitions, 189 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:43:21,444 INFO L241 Difference]: Finished difference. Result has 78 places, 53 transitions, 146 flow [2020-10-11 18:43:21,445 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=146, PETRI_PLACES=78, PETRI_TRANSITIONS=53} [2020-10-11 18:43:21,445 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 14 predicate places. [2020-10-11 18:43:21,445 INFO L481 AbstractCegarLoop]: Abstraction has has 78 places, 53 transitions, 146 flow [2020-10-11 18:43:21,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:43:21,446 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:43:21,446 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:43:21,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:43:21,446 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:43:21,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:43:21,447 INFO L82 PathProgramCache]: Analyzing trace with hash -784081567, now seen corresponding path program 1 times [2020-10-11 18:43:21,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:43:21,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410436431] [2020-10-11 18:43:21,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:43:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:43:21,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:43:21,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410436431] [2020-10-11 18:43:21,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:43:21,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:43:21,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127308167] [2020-10-11 18:43:21,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:43:21,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:43:21,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:43:21,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:43:21,719 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:43:21,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 53 transitions, 146 flow. Second operand 6 states. [2020-10-11 18:43:21,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:43:21,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:43:21,720 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:43:21,902 INFO L129 PetriNetUnfolder]: 91/278 cut-off events. [2020-10-11 18:43:21,903 INFO L130 PetriNetUnfolder]: For 47/48 co-relation queries the response was YES. [2020-10-11 18:43:21,905 INFO L80 FinitePrefix]: Finished finitePrefix Result has 534 conditions, 278 events. 91/278 cut-off events. For 47/48 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1374 event pairs, 10 based on Foata normal form. 8/280 useless extension candidates. Maximal degree in co-relation 499. Up to 81 conditions per place. [2020-10-11 18:43:21,907 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 10 selfloop transitions, 6 changer transitions 19/78 dead transitions. [2020-10-11 18:43:21,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 78 transitions, 266 flow [2020-10-11 18:43:21,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:43:21,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:43:21,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 541 transitions. [2020-10-11 18:43:21,911 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8711755233494364 [2020-10-11 18:43:21,911 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 541 transitions. [2020-10-11 18:43:21,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 541 transitions. [2020-10-11 18:43:21,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:43:21,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 541 transitions. [2020-10-11 18:43:21,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:43:21,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:43:21,915 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:43:21,916 INFO L185 Difference]: Start difference. First operand has 78 places, 53 transitions, 146 flow. Second operand 9 states and 541 transitions. [2020-10-11 18:43:21,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 78 transitions, 266 flow [2020-10-11 18:43:21,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 78 transitions, 240 flow, removed 8 selfloop flow, removed 10 redundant places. [2020-10-11 18:43:21,951 INFO L241 Difference]: Finished difference. Result has 76 places, 56 transitions, 176 flow [2020-10-11 18:43:21,951 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=176, PETRI_PLACES=76, PETRI_TRANSITIONS=56} [2020-10-11 18:43:21,952 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 12 predicate places. [2020-10-11 18:43:21,952 INFO L481 AbstractCegarLoop]: Abstraction has has 76 places, 56 transitions, 176 flow [2020-10-11 18:43:21,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:43:21,952 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:43:21,952 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:43:21,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:43:21,953 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:43:21,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:43:21,953 INFO L82 PathProgramCache]: Analyzing trace with hash -202207241, now seen corresponding path program 1 times [2020-10-11 18:43:21,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:43:21,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486550321] [2020-10-11 18:43:21,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:43:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:43:22,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:43:22,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486550321] [2020-10-11 18:43:22,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:43:22,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:43:22,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33948296] [2020-10-11 18:43:22,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:43:22,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:43:22,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:43:22,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:43:22,142 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:43:22,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 56 transitions, 176 flow. Second operand 7 states. [2020-10-11 18:43:22,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:43:22,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:43:22,143 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:43:22,296 INFO L129 PetriNetUnfolder]: 52/190 cut-off events. [2020-10-11 18:43:22,296 INFO L130 PetriNetUnfolder]: For 278/309 co-relation queries the response was YES. [2020-10-11 18:43:22,298 INFO L80 FinitePrefix]: Finished finitePrefix Result has 576 conditions, 190 events. 52/190 cut-off events. For 278/309 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 744 event pairs, 0 based on Foata normal form. 13/200 useless extension candidates. Maximal degree in co-relation 543. Up to 75 conditions per place. [2020-10-11 18:43:22,299 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 10 selfloop transitions, 9 changer transitions 19/81 dead transitions. [2020-10-11 18:43:22,299 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 81 transitions, 429 flow [2020-10-11 18:43:22,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:43:22,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:43:22,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 600 transitions. [2020-10-11 18:43:22,302 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2020-10-11 18:43:22,303 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 600 transitions. [2020-10-11 18:43:22,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 600 transitions. [2020-10-11 18:43:22,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:43:22,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 600 transitions. [2020-10-11 18:43:22,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:43:22,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:43:22,307 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:43:22,307 INFO L185 Difference]: Start difference. First operand has 76 places, 56 transitions, 176 flow. Second operand 10 states and 600 transitions. [2020-10-11 18:43:22,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 81 transitions, 429 flow [2020-10-11 18:43:22,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 81 transitions, 405 flow, removed 7 selfloop flow, removed 5 redundant places. [2020-10-11 18:43:22,313 INFO L241 Difference]: Finished difference. Result has 82 places, 59 transitions, 244 flow [2020-10-11 18:43:22,313 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=244, PETRI_PLACES=82, PETRI_TRANSITIONS=59} [2020-10-11 18:43:22,313 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 18 predicate places. [2020-10-11 18:43:22,313 INFO L481 AbstractCegarLoop]: Abstraction has has 82 places, 59 transitions, 244 flow [2020-10-11 18:43:22,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:43:22,314 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:43:22,314 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:43:22,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:43:22,314 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:43:22,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:43:22,315 INFO L82 PathProgramCache]: Analyzing trace with hash -273426506, now seen corresponding path program 1 times [2020-10-11 18:43:22,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:43:22,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604764727] [2020-10-11 18:43:22,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:43:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:43:22,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:43:22,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604764727] [2020-10-11 18:43:22,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:43:22,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-11 18:43:22,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137956324] [2020-10-11 18:43:22,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 18:43:22,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:43:22,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 18:43:22,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-11 18:43:22,612 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:43:22,612 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 59 transitions, 244 flow. Second operand 8 states. [2020-10-11 18:43:22,613 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:43:22,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:43:22,613 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:43:22,799 INFO L129 PetriNetUnfolder]: 16/99 cut-off events. [2020-10-11 18:43:22,799 INFO L130 PetriNetUnfolder]: For 394/443 co-relation queries the response was YES. [2020-10-11 18:43:22,800 INFO L80 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 99 events. 16/99 cut-off events. For 394/443 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 217 event pairs, 0 based on Foata normal form. 14/112 useless extension candidates. Maximal degree in co-relation 316. Up to 30 conditions per place. [2020-10-11 18:43:22,801 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 4 selfloop transitions, 12 changer transitions 13/72 dead transitions. [2020-10-11 18:43:22,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 72 transitions, 428 flow [2020-10-11 18:43:22,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 18:43:22,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 18:43:22,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 647 transitions. [2020-10-11 18:43:22,804 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.852437417654809 [2020-10-11 18:43:22,804 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 647 transitions. [2020-10-11 18:43:22,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 647 transitions. [2020-10-11 18:43:22,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:43:22,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 647 transitions. [2020-10-11 18:43:22,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 18:43:22,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 18:43:22,808 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 18:43:22,809 INFO L185 Difference]: Start difference. First operand has 82 places, 59 transitions, 244 flow. Second operand 11 states and 647 transitions. [2020-10-11 18:43:22,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 72 transitions, 428 flow [2020-10-11 18:43:22,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 72 transitions, 329 flow, removed 39 selfloop flow, removed 10 redundant places. [2020-10-11 18:43:22,814 INFO L241 Difference]: Finished difference. Result has 84 places, 59 transitions, 230 flow [2020-10-11 18:43:22,814 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=230, PETRI_PLACES=84, PETRI_TRANSITIONS=59} [2020-10-11 18:43:22,814 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 20 predicate places. [2020-10-11 18:43:22,815 INFO L481 AbstractCegarLoop]: Abstraction has has 84 places, 59 transitions, 230 flow [2020-10-11 18:43:22,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 18:43:22,815 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:43:22,815 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:43:22,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:43:22,816 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:43:22,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:43:22,816 INFO L82 PathProgramCache]: Analyzing trace with hash -2049353860, now seen corresponding path program 1 times [2020-10-11 18:43:22,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:43:22,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312319596] [2020-10-11 18:43:22,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:43:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:43:22,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:43:22,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312319596] [2020-10-11 18:43:22,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:43:22,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:43:22,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663844345] [2020-10-11 18:43:22,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:43:22,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:43:22,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:43:22,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:43:23,151 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 69 [2020-10-11 18:43:23,151 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 59 transitions, 230 flow. Second operand 7 states. [2020-10-11 18:43:23,151 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:43:23,152 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 69 [2020-10-11 18:43:23,152 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:43:23,226 INFO L129 PetriNetUnfolder]: 10/105 cut-off events. [2020-10-11 18:43:23,227 INFO L130 PetriNetUnfolder]: For 144/154 co-relation queries the response was YES. [2020-10-11 18:43:23,227 INFO L80 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 105 events. 10/105 cut-off events. For 144/154 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 233 event pairs, 0 based on Foata normal form. 1/104 useless extension candidates. Maximal degree in co-relation 218. Up to 21 conditions per place. [2020-10-11 18:43:23,228 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 9 selfloop transitions, 1 changer transitions 5/64 dead transitions. [2020-10-11 18:43:23,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 64 transitions, 270 flow [2020-10-11 18:43:23,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:43:23,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:43:23,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 415 transitions. [2020-10-11 18:43:23,230 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8592132505175983 [2020-10-11 18:43:23,230 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 415 transitions. [2020-10-11 18:43:23,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 415 transitions. [2020-10-11 18:43:23,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:43:23,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 415 transitions. [2020-10-11 18:43:23,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:43:23,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:43:23,233 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:43:23,234 INFO L185 Difference]: Start difference. First operand has 84 places, 59 transitions, 230 flow. Second operand 7 states and 415 transitions. [2020-10-11 18:43:23,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 64 transitions, 270 flow [2020-10-11 18:43:23,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 64 transitions, 188 flow, removed 22 selfloop flow, removed 15 redundant places. [2020-10-11 18:43:23,237 INFO L241 Difference]: Finished difference. Result has 76 places, 59 transitions, 161 flow [2020-10-11 18:43:23,237 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=161, PETRI_PLACES=76, PETRI_TRANSITIONS=59} [2020-10-11 18:43:23,237 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 12 predicate places. [2020-10-11 18:43:23,238 INFO L481 AbstractCegarLoop]: Abstraction has has 76 places, 59 transitions, 161 flow [2020-10-11 18:43:23,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:43:23,238 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:43:23,238 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:43:23,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:43:23,238 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:43:23,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:43:23,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1634746376, now seen corresponding path program 2 times [2020-10-11 18:43:23,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:43:23,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800994828] [2020-10-11 18:43:23,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:43:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:43:23,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:43:23,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800994828] [2020-10-11 18:43:23,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:43:23,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:43:23,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589797949] [2020-10-11 18:43:23,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:43:23,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:43:23,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:43:23,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:43:23,594 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 69 [2020-10-11 18:43:23,595 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 59 transitions, 161 flow. Second operand 7 states. [2020-10-11 18:43:23,595 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:43:23,595 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 69 [2020-10-11 18:43:23,596 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:43:23,682 INFO L129 PetriNetUnfolder]: 7/90 cut-off events. [2020-10-11 18:43:23,682 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2020-10-11 18:43:23,682 INFO L80 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 90 events. 7/90 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 192 event pairs, 0 based on Foata normal form. 1/88 useless extension candidates. Maximal degree in co-relation 137. Up to 10 conditions per place. [2020-10-11 18:43:23,683 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 0 selfloop transitions, 0 changer transitions 58/58 dead transitions. [2020-10-11 18:43:23,683 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 58 transitions, 177 flow [2020-10-11 18:43:23,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:43:23,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:43:23,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 410 transitions. [2020-10-11 18:43:23,685 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8488612836438924 [2020-10-11 18:43:23,685 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 410 transitions. [2020-10-11 18:43:23,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 410 transitions. [2020-10-11 18:43:23,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:43:23,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 410 transitions. [2020-10-11 18:43:23,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:43:23,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:43:23,689 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:43:23,689 INFO L185 Difference]: Start difference. First operand has 76 places, 59 transitions, 161 flow. Second operand 7 states and 410 transitions. [2020-10-11 18:43:23,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 58 transitions, 177 flow [2020-10-11 18:43:23,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 58 transitions, 170 flow, removed 3 selfloop flow, removed 4 redundant places. [2020-10-11 18:43:23,692 INFO L241 Difference]: Finished difference. Result has 72 places, 0 transitions, 0 flow [2020-10-11 18:43:23,692 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=72, PETRI_TRANSITIONS=0} [2020-10-11 18:43:23,692 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 8 predicate places. [2020-10-11 18:43:23,692 INFO L481 AbstractCegarLoop]: Abstraction has has 72 places, 0 transitions, 0 flow [2020-10-11 18:43:23,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:43:23,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 18:43:23,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:43:23 BasicIcfg [2020-10-11 18:43:23,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:43:23,701 INFO L168 Benchmark]: Toolchain (without parser) took 5002.03 ms. Allocated memory was 250.6 MB in the beginning and 425.2 MB in the end (delta: 174.6 MB). Free memory was 203.2 MB in the beginning and 272.8 MB in the end (delta: -69.6 MB). Peak memory consumption was 105.0 MB. Max. memory is 14.2 GB. [2020-10-11 18:43:23,702 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 250.6 MB. Free memory is still 224.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:43:23,703 INFO L168 Benchmark]: CACSL2BoogieTranslator took 604.23 ms. Allocated memory was 250.6 MB in the beginning and 313.5 MB in the end (delta: 62.9 MB). Free memory was 203.2 MB in the beginning and 267.5 MB in the end (delta: -64.2 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.2 GB. [2020-10-11 18:43:23,704 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.12 ms. Allocated memory is still 313.5 MB. Free memory was 267.5 MB in the beginning and 264.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.2 GB. [2020-10-11 18:43:23,705 INFO L168 Benchmark]: Boogie Preprocessor took 25.79 ms. Allocated memory is still 313.5 MB. Free memory was 264.3 MB in the beginning and 261.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:43:23,705 INFO L168 Benchmark]: RCFGBuilder took 417.83 ms. Allocated memory is still 313.5 MB. Free memory was 261.8 MB in the beginning and 240.0 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-11 18:43:23,706 INFO L168 Benchmark]: TraceAbstraction took 3903.12 ms. Allocated memory was 313.5 MB in the beginning and 425.2 MB in the end (delta: 111.7 MB). Free memory was 240.0 MB in the beginning and 272.8 MB in the end (delta: -32.9 MB). Peak memory consumption was 78.8 MB. Max. memory is 14.2 GB. [2020-10-11 18:43:23,710 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 250.6 MB. Free memory is still 224.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 604.23 ms. Allocated memory was 250.6 MB in the beginning and 313.5 MB in the end (delta: 62.9 MB). Free memory was 203.2 MB in the beginning and 267.5 MB in the end (delta: -64.2 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 45.12 ms. Allocated memory is still 313.5 MB. Free memory was 267.5 MB in the beginning and 264.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.79 ms. Allocated memory is still 313.5 MB. Free memory was 264.3 MB in the beginning and 261.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 417.83 ms. Allocated memory is still 313.5 MB. Free memory was 261.8 MB in the beginning and 240.0 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3903.12 ms. Allocated memory was 313.5 MB in the beginning and 425.2 MB in the end (delta: 111.7 MB). Free memory was 240.0 MB in the beginning and 272.8 MB in the end (delta: -32.9 MB). Peak memory consumption was 78.8 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 189 SDtfs, 184 SDslu, 543 SDs, 0 SdLazy, 533 SolverSat, 86 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=244occurred in iteration=4, 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, 0.7s InterpolantComputationTime, 292 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 285 ConstructedInterpolants, 0 QuantifiedInterpolants, 33207 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...