/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-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:04:49,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:04:49,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:04:49,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:04:49,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:04:49,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:04:49,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:04:49,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:04:49,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:04:49,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:04:49,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:04:49,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:04:49,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:04:49,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:04:49,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:04:49,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:04:49,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:04:49,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:04:49,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:04:49,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:04:49,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:04:49,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:04:49,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:04:49,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:04:49,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 05:04:49,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 05:04:49,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 05:04:49,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 05:04:49,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 05:04:49,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 05:04:49,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:04:49,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:04:49,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:04:49,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:04:49,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:04:49,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:04:49,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:04:49,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:04:49,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:04:49,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:04:49,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:04:49,479 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-SemanticLooper.epf [2020-10-16 05:04:49,518 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:04:49,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:04:49,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:04:49,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:04:49,521 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:04:49,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:04:49,521 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:04:49,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:04:49,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:04:49,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:04:49,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:04:49,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:04:49,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:04:49,524 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:04:49,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:04:49,525 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:04:49,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:04:49,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:04:49,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:04:49,526 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:04:49,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:04:49,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:04:49,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:04:49,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:04:49,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:04:49,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:04:49,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:04:49,530 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:04:49,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:04:49,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:04:49,829 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:04:49,832 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:04:49,833 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:04:49,834 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:04:49,834 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-10-16 05:04:49,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c654bf8a8/6f4b9d774b4745b08f6eaa6d9f4186af/FLAG4649698c7 [2020-10-16 05:04:50,494 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:04:50,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-10-16 05:04:50,507 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c654bf8a8/6f4b9d774b4745b08f6eaa6d9f4186af/FLAG4649698c7 [2020-10-16 05:04:50,723 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c654bf8a8/6f4b9d774b4745b08f6eaa6d9f4186af [2020-10-16 05:04:50,733 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:04:50,735 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:04:50,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:04:50,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:04:50,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:04:50,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:04:50" (1/1) ... [2020-10-16 05:04:50,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1342bb1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:50, skipping insertion in model container [2020-10-16 05:04:50,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:04:50" (1/1) ... [2020-10-16 05:04:50,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:04:50,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:04:51,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:04:51,337 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:04:51,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:04:51,458 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:04:51,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:51 WrapperNode [2020-10-16 05:04:51,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:04:51,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:04:51,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:04:51,460 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:04:51,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:51" (1/1) ... [2020-10-16 05:04:51,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:51" (1/1) ... [2020-10-16 05:04:51,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:04:51,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:04:51,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:04:51,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:04:51,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:51" (1/1) ... [2020-10-16 05:04:51,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:51" (1/1) ... [2020-10-16 05:04:51,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:51" (1/1) ... [2020-10-16 05:04:51,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:51" (1/1) ... [2020-10-16 05:04:51,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:51" (1/1) ... [2020-10-16 05:04:51,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:51" (1/1) ... [2020-10-16 05:04:51,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:51" (1/1) ... [2020-10-16 05:04:51,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:04:51,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:04:51,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:04:51,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:04:51,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:51" (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 05:04:51,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:04:51,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:04:51,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:04:51,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:04:51,600 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:04:51,600 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:04:51,601 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:04:51,601 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:04:51,601 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 05:04:51,602 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 05:04:51,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:04:51,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:04:51,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:04:51,605 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 05:04:51,967 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:04:51,968 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:04:51,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:04:51 BoogieIcfgContainer [2020-10-16 05:04:51,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:04:51,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:04:51,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:04:51,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:04:51,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:04:50" (1/3) ... [2020-10-16 05:04:51,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1518a618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:04:51, skipping insertion in model container [2020-10-16 05:04:51,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:51" (2/3) ... [2020-10-16 05:04:51,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1518a618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:04:51, skipping insertion in model container [2020-10-16 05:04:51,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:04:51" (3/3) ... [2020-10-16 05:04:51,979 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2020-10-16 05:04:51,992 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:04:52,000 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:04:52,001 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:04:52,027 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,027 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,027 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,027 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,028 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,028 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,029 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,029 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,029 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,029 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,030 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,030 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,030 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,031 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,031 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,031 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,031 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,032 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,035 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,036 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,036 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,036 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,042 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,042 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,043 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,043 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,045 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,045 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,046 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,046 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:52,064 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 05:04:52,086 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:04:52,086 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:04:52,086 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:04:52,087 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:04:52,087 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:04:52,087 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:04:52,087 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:04:52,087 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:04:52,101 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 05:04:52,144 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-16 05:04:52,144 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:04:52,149 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 05:04:52,150 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 05:04:52,156 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 55 transitions, 119 flow [2020-10-16 05:04:52,158 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:04:52,161 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 05:04:52,164 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 05:04:52,164 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions, 119 flow [2020-10-16 05:04:52,185 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-16 05:04:52,186 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:04:52,186 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 05:04:52,188 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 05:04:53,504 INFO L132 LiptonReduction]: Checked pairs total: 1770 [2020-10-16 05:04:53,505 INFO L134 LiptonReduction]: Total number of compositions: 42 [2020-10-16 05:04:53,508 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1351 [2020-10-16 05:04:53,516 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-10-16 05:04:53,516 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:04:53,516 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:53,517 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:53,518 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:53,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:53,524 INFO L82 PathProgramCache]: Analyzing trace with hash -142927657, now seen corresponding path program 1 times [2020-10-16 05:04:53,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:53,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745753219] [2020-10-16 05:04:53,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:53,751 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 05:04:53,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745753219] [2020-10-16 05:04:53,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:53,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:04:53,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901156882] [2020-10-16 05:04:53,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:04:53,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:53,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:04:53,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:04:53,789 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 111 [2020-10-16 05:04:53,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states. [2020-10-16 05:04:53,794 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:53,794 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 111 [2020-10-16 05:04:53,795 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:53,829 INFO L129 PetriNetUnfolder]: 3/24 cut-off events. [2020-10-16 05:04:53,830 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:04:53,830 INFO L80 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 24 events. 3/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 33 event pairs, 1 based on Foata normal form. 5/29 useless extension candidates. Maximal degree in co-relation 35. Up to 10 conditions per place. [2020-10-16 05:04:53,832 INFO L132 encePairwiseOnDemand]: 106/111 looper letters, 3 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2020-10-16 05:04:53,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 19 transitions, 59 flow [2020-10-16 05:04:53,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:04:53,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:04:53,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2020-10-16 05:04:53,856 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8468468468468469 [2020-10-16 05:04:53,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2020-10-16 05:04:53,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2020-10-16 05:04:53,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:53,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2020-10-16 05:04:53,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:04:53,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:04:53,882 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:04:53,885 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 282 transitions. [2020-10-16 05:04:53,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 19 transitions, 59 flow [2020-10-16 05:04:53,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 19 transitions, 56 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 05:04:53,893 INFO L241 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2020-10-16 05:04:53,896 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2020-10-16 05:04:53,897 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 05:04:53,898 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2020-10-16 05:04:53,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:04:53,901 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:53,902 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:53,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:04:53,910 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:53,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:53,911 INFO L82 PathProgramCache]: Analyzing trace with hash -135790335, now seen corresponding path program 1 times [2020-10-16 05:04:53,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:53,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844040004] [2020-10-16 05:04:53,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:53,972 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 05:04:53,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844040004] [2020-10-16 05:04:53,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:53,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:04:53,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897778937] [2020-10-16 05:04:53,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:04:53,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:53,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:04:53,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:04:53,976 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 111 [2020-10-16 05:04:53,977 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand 3 states. [2020-10-16 05:04:53,977 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:53,977 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 111 [2020-10-16 05:04:53,977 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:54,010 INFO L129 PetriNetUnfolder]: 29/85 cut-off events. [2020-10-16 05:04:54,011 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2020-10-16 05:04:54,012 INFO L80 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 85 events. 29/85 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 329 event pairs, 16 based on Foata normal form. 4/81 useless extension candidates. Maximal degree in co-relation 164. Up to 44 conditions per place. [2020-10-16 05:04:54,013 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 6 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2020-10-16 05:04:54,013 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 79 flow [2020-10-16 05:04:54,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:04:54,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:04:54,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2020-10-16 05:04:54,016 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8198198198198198 [2020-10-16 05:04:54,016 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2020-10-16 05:04:54,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2020-10-16 05:04:54,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:54,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2020-10-16 05:04:54,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:04:54,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:04:54,019 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:04:54,019 INFO L185 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 3 states and 273 transitions. [2020-10-16 05:04:54,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 79 flow [2020-10-16 05:04:54,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 21 transitions, 76 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:04:54,021 INFO L241 Difference]: Finished difference. Result has 29 places, 19 transitions, 64 flow [2020-10-16 05:04:54,021 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2020-10-16 05:04:54,022 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2020-10-16 05:04:54,022 INFO L481 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 64 flow [2020-10-16 05:04:54,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:04:54,023 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:54,023 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:54,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:04:54,023 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:54,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:54,024 INFO L82 PathProgramCache]: Analyzing trace with hash -201967492, now seen corresponding path program 1 times [2020-10-16 05:04:54,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:54,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401951543] [2020-10-16 05:04:54,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:54,081 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 05:04:54,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401951543] [2020-10-16 05:04:54,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:54,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:04:54,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150183768] [2020-10-16 05:04:54,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:04:54,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:54,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:04:54,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:04:54,089 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 111 [2020-10-16 05:04:54,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 64 flow. Second operand 3 states. [2020-10-16 05:04:54,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:54,092 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 111 [2020-10-16 05:04:54,092 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:54,136 INFO L129 PetriNetUnfolder]: 17/56 cut-off events. [2020-10-16 05:04:54,136 INFO L130 PetriNetUnfolder]: For 37/49 co-relation queries the response was YES. [2020-10-16 05:04:54,137 INFO L80 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 56 events. 17/56 cut-off events. For 37/49 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 183 event pairs, 11 based on Foata normal form. 7/57 useless extension candidates. Maximal degree in co-relation 118. Up to 25 conditions per place. [2020-10-16 05:04:54,137 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 6 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2020-10-16 05:04:54,138 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 21 transitions, 84 flow [2020-10-16 05:04:54,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:04:54,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:04:54,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2020-10-16 05:04:54,140 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8198198198198198 [2020-10-16 05:04:54,140 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2020-10-16 05:04:54,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2020-10-16 05:04:54,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:54,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2020-10-16 05:04:54,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:04:54,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:04:54,157 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:04:54,157 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 64 flow. Second operand 3 states and 273 transitions. [2020-10-16 05:04:54,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 21 transitions, 84 flow [2020-10-16 05:04:54,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 21 transitions, 80 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:04:54,159 INFO L241 Difference]: Finished difference. Result has 30 places, 19 transitions, 68 flow [2020-10-16 05:04:54,160 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2020-10-16 05:04:54,160 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 05:04:54,160 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 68 flow [2020-10-16 05:04:54,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:04:54,160 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:54,161 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:54,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:04:54,161 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:54,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:54,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1971283482, now seen corresponding path program 1 times [2020-10-16 05:04:54,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:54,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38600036] [2020-10-16 05:04:54,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:54,222 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 05:04:54,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38600036] [2020-10-16 05:04:54,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:54,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:04:54,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679962121] [2020-10-16 05:04:54,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:04:54,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:54,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:04:54,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:04:54,225 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 111 [2020-10-16 05:04:54,225 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 68 flow. Second operand 3 states. [2020-10-16 05:04:54,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:54,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 111 [2020-10-16 05:04:54,226 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:54,235 INFO L129 PetriNetUnfolder]: 3/24 cut-off events. [2020-10-16 05:04:54,236 INFO L130 PetriNetUnfolder]: For 33/37 co-relation queries the response was YES. [2020-10-16 05:04:54,236 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 24 events. 3/24 cut-off events. For 33/37 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 39 event pairs, 1 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 49. Up to 10 conditions per place. [2020-10-16 05:04:54,237 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 1 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2020-10-16 05:04:54,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 19 transitions, 74 flow [2020-10-16 05:04:54,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:04:54,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:04:54,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2020-10-16 05:04:54,239 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8498498498498499 [2020-10-16 05:04:54,239 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2020-10-16 05:04:54,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2020-10-16 05:04:54,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:54,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2020-10-16 05:04:54,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:04:54,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:04:54,241 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:04:54,241 INFO L185 Difference]: Start difference. First operand has 30 places, 19 transitions, 68 flow. Second operand 3 states and 283 transitions. [2020-10-16 05:04:54,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 19 transitions, 74 flow [2020-10-16 05:04:54,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 19 transitions, 70 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:04:54,243 INFO L241 Difference]: Finished difference. Result has 31 places, 19 transitions, 72 flow [2020-10-16 05:04:54,243 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2020-10-16 05:04:54,244 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2020-10-16 05:04:54,244 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 72 flow [2020-10-16 05:04:54,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:04:54,244 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:54,244 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:54,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:04:54,245 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:54,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:54,245 INFO L82 PathProgramCache]: Analyzing trace with hash 980225973, now seen corresponding path program 1 times [2020-10-16 05:04:54,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:54,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923327094] [2020-10-16 05:04:54,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:54,320 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 05:04:54,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923327094] [2020-10-16 05:04:54,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:54,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:04:54,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519261496] [2020-10-16 05:04:54,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:04:54,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:54,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:04:54,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:04:54,329 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 111 [2020-10-16 05:04:54,329 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 72 flow. Second operand 4 states. [2020-10-16 05:04:54,330 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:54,330 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 111 [2020-10-16 05:04:54,330 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:54,406 INFO L129 PetriNetUnfolder]: 42/96 cut-off events. [2020-10-16 05:04:54,407 INFO L130 PetriNetUnfolder]: For 243/264 co-relation queries the response was YES. [2020-10-16 05:04:54,409 INFO L80 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 96 events. 42/96 cut-off events. For 243/264 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 350 event pairs, 18 based on Foata normal form. 16/105 useless extension candidates. Maximal degree in co-relation 240. Up to 61 conditions per place. [2020-10-16 05:04:54,411 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 7 selfloop transitions, 7 changer transitions 2/29 dead transitions. [2020-10-16 05:04:54,411 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 124 flow [2020-10-16 05:04:54,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:04:54,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:04:54,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 418 transitions. [2020-10-16 05:04:54,414 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7531531531531531 [2020-10-16 05:04:54,415 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 418 transitions. [2020-10-16 05:04:54,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 418 transitions. [2020-10-16 05:04:54,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:54,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 418 transitions. [2020-10-16 05:04:54,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:04:54,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:04:54,418 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:04:54,418 INFO L185 Difference]: Start difference. First operand has 31 places, 19 transitions, 72 flow. Second operand 5 states and 418 transitions. [2020-10-16 05:04:54,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 124 flow [2020-10-16 05:04:54,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:04:54,421 INFO L241 Difference]: Finished difference. Result has 36 places, 25 transitions, 122 flow [2020-10-16 05:04:54,421 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2020-10-16 05:04:54,422 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2020-10-16 05:04:54,422 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 122 flow [2020-10-16 05:04:54,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:04:54,422 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:54,422 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:54,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:04:54,423 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:54,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:54,423 INFO L82 PathProgramCache]: Analyzing trace with hash 2055609306, now seen corresponding path program 1 times [2020-10-16 05:04:54,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:54,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504270562] [2020-10-16 05:04:54,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:54,501 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 05:04:54,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504270562] [2020-10-16 05:04:54,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:54,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:04:54,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790064526] [2020-10-16 05:04:54,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:04:54,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:54,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:04:54,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:04:54,505 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 111 [2020-10-16 05:04:54,506 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 122 flow. Second operand 4 states. [2020-10-16 05:04:54,506 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:54,506 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 111 [2020-10-16 05:04:54,506 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:54,584 INFO L129 PetriNetUnfolder]: 88/215 cut-off events. [2020-10-16 05:04:54,584 INFO L130 PetriNetUnfolder]: For 858/932 co-relation queries the response was YES. [2020-10-16 05:04:54,586 INFO L80 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 215 events. 88/215 cut-off events. For 858/932 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1157 event pairs, 32 based on Foata normal form. 31/226 useless extension candidates. Maximal degree in co-relation 664. Up to 136 conditions per place. [2020-10-16 05:04:54,587 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 6 selfloop transitions, 3 changer transitions 1/29 dead transitions. [2020-10-16 05:04:54,588 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 152 flow [2020-10-16 05:04:54,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:04:54,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:04:54,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2020-10-16 05:04:54,589 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7815315315315315 [2020-10-16 05:04:54,590 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 347 transitions. [2020-10-16 05:04:54,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 347 transitions. [2020-10-16 05:04:54,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:54,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 347 transitions. [2020-10-16 05:04:54,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:04:54,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:04:54,592 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:04:54,592 INFO L185 Difference]: Start difference. First operand has 36 places, 25 transitions, 122 flow. Second operand 4 states and 347 transitions. [2020-10-16 05:04:54,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 152 flow [2020-10-16 05:04:54,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 29 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:04:54,601 INFO L241 Difference]: Finished difference. Result has 39 places, 25 transitions, 128 flow [2020-10-16 05:04:54,601 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=39, PETRI_TRANSITIONS=25} [2020-10-16 05:04:54,601 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2020-10-16 05:04:54,601 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 25 transitions, 128 flow [2020-10-16 05:04:54,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:04:54,602 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:54,602 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:54,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:04:54,602 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:54,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:54,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1154321482, now seen corresponding path program 2 times [2020-10-16 05:04:54,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:54,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757527817] [2020-10-16 05:04:54,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:54,665 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 05:04:54,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757527817] [2020-10-16 05:04:54,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:54,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:04:54,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242706289] [2020-10-16 05:04:54,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:04:54,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:54,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:04:54,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:04:54,669 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 111 [2020-10-16 05:04:54,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 25 transitions, 128 flow. Second operand 5 states. [2020-10-16 05:04:54,670 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:54,670 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 111 [2020-10-16 05:04:54,670 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:54,734 INFO L129 PetriNetUnfolder]: 25/76 cut-off events. [2020-10-16 05:04:54,734 INFO L130 PetriNetUnfolder]: For 534/609 co-relation queries the response was YES. [2020-10-16 05:04:54,734 INFO L80 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 76 events. 25/76 cut-off events. For 534/609 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 273 event pairs, 3 based on Foata normal form. 40/112 useless extension candidates. Maximal degree in co-relation 287. Up to 52 conditions per place. [2020-10-16 05:04:54,735 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 5 selfloop transitions, 13 changer transitions 4/35 dead transitions. [2020-10-16 05:04:54,735 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 35 transitions, 230 flow [2020-10-16 05:04:54,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 05:04:54,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 05:04:54,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 584 transitions. [2020-10-16 05:04:54,738 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7516087516087516 [2020-10-16 05:04:54,738 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 584 transitions. [2020-10-16 05:04:54,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 584 transitions. [2020-10-16 05:04:54,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:54,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 584 transitions. [2020-10-16 05:04:54,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 05:04:54,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 05:04:54,742 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 05:04:54,742 INFO L185 Difference]: Start difference. First operand has 39 places, 25 transitions, 128 flow. Second operand 7 states and 584 transitions. [2020-10-16 05:04:54,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 35 transitions, 230 flow [2020-10-16 05:04:54,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 35 transitions, 218 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 05:04:54,745 INFO L241 Difference]: Finished difference. Result has 44 places, 31 transitions, 204 flow [2020-10-16 05:04:54,745 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=204, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2020-10-16 05:04:54,745 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2020-10-16 05:04:54,746 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 204 flow [2020-10-16 05:04:54,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:04:54,746 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:54,746 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:54,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 05:04:54,746 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:54,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:54,747 INFO L82 PathProgramCache]: Analyzing trace with hash 980865761, now seen corresponding path program 1 times [2020-10-16 05:04:54,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:54,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711715207] [2020-10-16 05:04:54,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:54,769 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 05:04:54,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711715207] [2020-10-16 05:04:54,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:54,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:04:54,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608027039] [2020-10-16 05:04:54,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:04:54,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:54,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:04:54,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:04:54,772 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 111 [2020-10-16 05:04:54,772 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 204 flow. Second operand 3 states. [2020-10-16 05:04:54,773 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:54,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 111 [2020-10-16 05:04:54,773 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:54,792 INFO L129 PetriNetUnfolder]: 23/87 cut-off events. [2020-10-16 05:04:54,792 INFO L130 PetriNetUnfolder]: For 512/579 co-relation queries the response was YES. [2020-10-16 05:04:54,793 INFO L80 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 87 events. 23/87 cut-off events. For 512/579 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 372 event pairs, 3 based on Foata normal form. 11/94 useless extension candidates. Maximal degree in co-relation 360. Up to 64 conditions per place. [2020-10-16 05:04:54,794 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 3 selfloop transitions, 3 changer transitions 6/31 dead transitions. [2020-10-16 05:04:54,794 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 31 transitions, 216 flow [2020-10-16 05:04:54,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:04:54,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:04:54,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2020-10-16 05:04:54,796 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8378378378378378 [2020-10-16 05:04:54,796 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2020-10-16 05:04:54,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2020-10-16 05:04:54,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:54,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2020-10-16 05:04:54,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:04:54,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:04:54,798 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:04:54,798 INFO L185 Difference]: Start difference. First operand has 44 places, 31 transitions, 204 flow. Second operand 3 states and 279 transitions. [2020-10-16 05:04:54,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 31 transitions, 216 flow [2020-10-16 05:04:54,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 31 transitions, 186 flow, removed 11 selfloop flow, removed 2 redundant places. [2020-10-16 05:04:54,802 INFO L241 Difference]: Finished difference. Result has 45 places, 25 transitions, 145 flow [2020-10-16 05:04:54,802 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=45, PETRI_TRANSITIONS=25} [2020-10-16 05:04:54,802 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2020-10-16 05:04:54,803 INFO L481 AbstractCegarLoop]: Abstraction has has 45 places, 25 transitions, 145 flow [2020-10-16 05:04:54,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:04:54,803 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:54,803 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:54,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 05:04:54,803 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:54,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:54,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1436437043, now seen corresponding path program 1 times [2020-10-16 05:04:54,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:54,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580354423] [2020-10-16 05:04:54,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:54,832 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 05:04:54,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580354423] [2020-10-16 05:04:54,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:54,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:04:54,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156745679] [2020-10-16 05:04:54,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:04:54,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:54,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:04:54,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:04:54,835 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 111 [2020-10-16 05:04:54,836 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 25 transitions, 145 flow. Second operand 4 states. [2020-10-16 05:04:54,836 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:54,836 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 111 [2020-10-16 05:04:54,836 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:54,871 INFO L129 PetriNetUnfolder]: 42/126 cut-off events. [2020-10-16 05:04:54,871 INFO L130 PetriNetUnfolder]: For 576/589 co-relation queries the response was YES. [2020-10-16 05:04:54,872 INFO L80 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 126 events. 42/126 cut-off events. For 576/589 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 535 event pairs, 7 based on Foata normal form. 11/131 useless extension candidates. Maximal degree in co-relation 441. Up to 62 conditions per place. [2020-10-16 05:04:54,873 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 6 selfloop transitions, 2 changer transitions 1/28 dead transitions. [2020-10-16 05:04:54,873 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 28 transitions, 173 flow [2020-10-16 05:04:54,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:04:54,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:04:54,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 346 transitions. [2020-10-16 05:04:54,875 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7792792792792793 [2020-10-16 05:04:54,875 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 346 transitions. [2020-10-16 05:04:54,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 346 transitions. [2020-10-16 05:04:54,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:54,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 346 transitions. [2020-10-16 05:04:54,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:04:54,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:04:54,877 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:04:54,878 INFO L185 Difference]: Start difference. First operand has 45 places, 25 transitions, 145 flow. Second operand 4 states and 346 transitions. [2020-10-16 05:04:54,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 28 transitions, 173 flow [2020-10-16 05:04:54,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 28 transitions, 160 flow, removed 5 selfloop flow, removed 4 redundant places. [2020-10-16 05:04:54,881 INFO L241 Difference]: Finished difference. Result has 42 places, 26 transitions, 145 flow [2020-10-16 05:04:54,881 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=42, PETRI_TRANSITIONS=26} [2020-10-16 05:04:54,881 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2020-10-16 05:04:54,881 INFO L481 AbstractCegarLoop]: Abstraction has has 42 places, 26 transitions, 145 flow [2020-10-16 05:04:54,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:04:54,882 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:54,882 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:54,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 05:04:54,882 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:54,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:54,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1641346049, now seen corresponding path program 2 times [2020-10-16 05:04:54,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:54,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169409695] [2020-10-16 05:04:54,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:54,911 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 05:04:54,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169409695] [2020-10-16 05:04:54,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:54,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:04:54,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701818420] [2020-10-16 05:04:54,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:04:54,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:54,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:04:54,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:04:54,914 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 111 [2020-10-16 05:04:54,914 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 26 transitions, 145 flow. Second operand 4 states. [2020-10-16 05:04:54,914 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:54,914 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 111 [2020-10-16 05:04:54,914 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:54,952 INFO L129 PetriNetUnfolder]: 48/152 cut-off events. [2020-10-16 05:04:54,953 INFO L130 PetriNetUnfolder]: For 355/374 co-relation queries the response was YES. [2020-10-16 05:04:54,953 INFO L80 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 152 events. 48/152 cut-off events. For 355/374 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 748 event pairs, 6 based on Foata normal form. 9/156 useless extension candidates. Maximal degree in co-relation 496. Up to 74 conditions per place. [2020-10-16 05:04:54,954 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 6 selfloop transitions, 2 changer transitions 5/31 dead transitions. [2020-10-16 05:04:54,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 31 transitions, 191 flow [2020-10-16 05:04:54,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:04:54,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:04:54,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 432 transitions. [2020-10-16 05:04:54,956 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7783783783783784 [2020-10-16 05:04:54,956 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 432 transitions. [2020-10-16 05:04:54,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 432 transitions. [2020-10-16 05:04:54,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:54,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 432 transitions. [2020-10-16 05:04:54,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:04:54,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:04:54,959 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:04:54,959 INFO L185 Difference]: Start difference. First operand has 42 places, 26 transitions, 145 flow. Second operand 5 states and 432 transitions. [2020-10-16 05:04:54,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 31 transitions, 191 flow [2020-10-16 05:04:54,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 31 transitions, 183 flow, removed 3 selfloop flow, removed 1 redundant places. [2020-10-16 05:04:54,962 INFO L241 Difference]: Finished difference. Result has 47 places, 25 transitions, 142 flow [2020-10-16 05:04:54,963 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=25} [2020-10-16 05:04:54,963 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2020-10-16 05:04:54,963 INFO L481 AbstractCegarLoop]: Abstraction has has 47 places, 25 transitions, 142 flow [2020-10-16 05:04:54,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:04:54,963 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:54,963 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:54,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 05:04:54,964 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:54,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:54,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1693034047, now seen corresponding path program 3 times [2020-10-16 05:04:54,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:54,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678030485] [2020-10-16 05:04:54,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:55,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:04:55,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678030485] [2020-10-16 05:04:55,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:55,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 05:04:55,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476414778] [2020-10-16 05:04:55,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 05:04:55,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:55,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 05:04:55,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 05:04:55,015 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 111 [2020-10-16 05:04:55,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 25 transitions, 142 flow. Second operand 6 states. [2020-10-16 05:04:55,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:55,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 111 [2020-10-16 05:04:55,016 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:55,060 INFO L129 PetriNetUnfolder]: 15/70 cut-off events. [2020-10-16 05:04:55,060 INFO L130 PetriNetUnfolder]: For 123/181 co-relation queries the response was YES. [2020-10-16 05:04:55,061 INFO L80 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 70 events. 15/70 cut-off events. For 123/181 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 269 event pairs, 0 based on Foata normal form. 29/95 useless extension candidates. Maximal degree in co-relation 257. Up to 37 conditions per place. [2020-10-16 05:04:55,061 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2020-10-16 05:04:55,062 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 27 transitions, 170 flow [2020-10-16 05:04:55,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 05:04:55,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 05:04:55,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 574 transitions. [2020-10-16 05:04:55,064 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7387387387387387 [2020-10-16 05:04:55,064 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 574 transitions. [2020-10-16 05:04:55,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 574 transitions. [2020-10-16 05:04:55,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:55,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 574 transitions. [2020-10-16 05:04:55,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 05:04:55,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 05:04:55,068 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 05:04:55,068 INFO L185 Difference]: Start difference. First operand has 47 places, 25 transitions, 142 flow. Second operand 7 states and 574 transitions. [2020-10-16 05:04:55,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 27 transitions, 170 flow [2020-10-16 05:04:55,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 27 transitions, 158 flow, removed 0 selfloop flow, removed 6 redundant places. [2020-10-16 05:04:55,070 INFO L241 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2020-10-16 05:04:55,070 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2020-10-16 05:04:55,070 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2020-10-16 05:04:55,070 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2020-10-16 05:04:55,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 05:04:55,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 05:04:55,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:04:55 BasicIcfg [2020-10-16 05:04:55,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:04:55,078 INFO L168 Benchmark]: Toolchain (without parser) took 4342.51 ms. Allocated memory was 253.2 MB in the beginning and 373.3 MB in the end (delta: 120.1 MB). Free memory was 208.2 MB in the beginning and 187.5 MB in the end (delta: 20.7 MB). Peak memory consumption was 140.8 MB. Max. memory is 14.2 GB. [2020-10-16 05:04:55,078 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:04:55,079 INFO L168 Benchmark]: CACSL2BoogieTranslator took 723.81 ms. Allocated memory was 253.2 MB in the beginning and 320.9 MB in the end (delta: 67.6 MB). Free memory was 208.2 MB in the beginning and 273.8 MB in the end (delta: -65.6 MB). Peak memory consumption was 32.8 MB. Max. memory is 14.2 GB. [2020-10-16 05:04:55,079 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.95 ms. Allocated memory is still 320.9 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:04:55,080 INFO L168 Benchmark]: Boogie Preprocessor took 25.44 ms. Allocated memory is still 320.9 MB. Free memory was 273.8 MB in the beginning and 271.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:04:55,081 INFO L168 Benchmark]: RCFGBuilder took 435.39 ms. Allocated memory is still 320.9 MB. Free memory was 271.3 MB in the beginning and 249.4 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. [2020-10-16 05:04:55,082 INFO L168 Benchmark]: TraceAbstraction took 3103.57 ms. Allocated memory was 320.9 MB in the beginning and 373.3 MB in the end (delta: 52.4 MB). Free memory was 249.4 MB in the beginning and 187.5 MB in the end (delta: 61.9 MB). Peak memory consumption was 114.3 MB. Max. memory is 14.2 GB. [2020-10-16 05:04:55,085 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 723.81 ms. Allocated memory was 253.2 MB in the beginning and 320.9 MB in the end (delta: 67.6 MB). Free memory was 208.2 MB in the beginning and 273.8 MB in the end (delta: -65.6 MB). Peak memory consumption was 32.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.95 ms. Allocated memory is still 320.9 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.44 ms. Allocated memory is still 320.9 MB. Free memory was 273.8 MB in the beginning and 271.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 435.39 ms. Allocated memory is still 320.9 MB. Free memory was 271.3 MB in the beginning and 249.4 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3103.57 ms. Allocated memory was 320.9 MB in the beginning and 373.3 MB in the end (delta: 52.4 MB). Free memory was 249.4 MB in the beginning and 187.5 MB in the end (delta: 61.9 MB). Peak memory consumption was 114.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 576 VarBasedMoverChecksPositive, 55 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 79 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 64 PlacesBefore, 27 PlacesAfterwards, 55 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 42 TotalNumberOfCompositions, 1770 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 49 SDtfs, 23 SDslu, 16 SDs, 0 SdLazy, 132 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=204occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 3822 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...