/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 19:02:00,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 19:02:00,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 19:02:00,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 19:02:00,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 19:02:00,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 19:02:00,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 19:02:00,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 19:02:00,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 19:02:00,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 19:02:00,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 19:02:00,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 19:02:00,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 19:02:00,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 19:02:00,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 19:02:00,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 19:02:00,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 19:02:00,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 19:02:00,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 19:02:00,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 19:02:00,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 19:02:00,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 19:02:00,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 19:02:00,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 19:02:00,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 19:02:00,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 19:02:00,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 19:02:00,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 19:02:00,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 19:02:00,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 19:02:00,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 19:02:00,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 19:02:00,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 19:02:00,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 19:02:00,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 19:02:00,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 19:02:00,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 19:02:00,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 19:02:00,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 19:02:00,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 19:02:00,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 19:02:00,348 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 19:02:00,391 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 19:02:00,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 19:02:00,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 19:02:00,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 19:02:00,393 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 19:02:00,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 19:02:00,393 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 19:02:00,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 19:02:00,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 19:02:00,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 19:02:00,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 19:02:00,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 19:02:00,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 19:02:00,395 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 19:02:00,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 19:02:00,395 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 19:02:00,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 19:02:00,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 19:02:00,397 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 19:02:00,397 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 19:02:00,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 19:02:00,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 19:02:00,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 19:02:00,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 19:02:00,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 19:02:00,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 19:02:00,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 19:02:00,399 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 19:02:00,399 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 19:02:00,399 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 19:02:00,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 19:02:00,726 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 19:02:00,730 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 19:02:00,731 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 19:02:00,731 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 19:02:00,732 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2020-10-11 19:02:00,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85962aaca/5ff05f8c0e434d53959d9569b3cd422c/FLAG037060419 [2020-10-11 19:02:01,402 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 19:02:01,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2020-10-11 19:02:01,422 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85962aaca/5ff05f8c0e434d53959d9569b3cd422c/FLAG037060419 [2020-10-11 19:02:01,572 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85962aaca/5ff05f8c0e434d53959d9569b3cd422c [2020-10-11 19:02:01,580 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 19:02:01,581 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 19:02:01,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 19:02:01,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 19:02:01,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 19:02:01,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:02:01" (1/1) ... [2020-10-11 19:02:01,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73ff41f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:02:01, skipping insertion in model container [2020-10-11 19:02:01,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:02:01" (1/1) ... [2020-10-11 19:02:01,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 19:02:01,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 19:02:02,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 19:02:02,456 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 19:02:02,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 19:02:02,902 INFO L208 MainTranslator]: Completed translation [2020-10-11 19:02:02,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:02:02 WrapperNode [2020-10-11 19:02:02,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 19:02:02,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 19:02:02,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 19:02:02,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 19:02:02,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:02:02" (1/1) ... [2020-10-11 19:02:02,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:02:02" (1/1) ... [2020-10-11 19:02:02,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 19:02:02,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 19:02:02,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 19:02:02,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 19:02:03,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:02:02" (1/1) ... [2020-10-11 19:02:03,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:02:02" (1/1) ... [2020-10-11 19:02:03,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:02:02" (1/1) ... [2020-10-11 19:02:03,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:02:02" (1/1) ... [2020-10-11 19:02:03,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:02:02" (1/1) ... [2020-10-11 19:02:03,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:02:02" (1/1) ... [2020-10-11 19:02:03,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:02:02" (1/1) ... [2020-10-11 19:02:03,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 19:02:03,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 19:02:03,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 19:02:03,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 19:02:03,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:02:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 19:02:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 19:02:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-11 19:02:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-11 19:02:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-11 19:02:03,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 19:02:03,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 19:02:03,109 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2020-10-11 19:02:03,109 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2020-10-11 19:02:03,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 19:02:03,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 19:02:03,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-11 19:02:03,112 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 19:02:03,805 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 19:02:03,806 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-10-11 19:02:03,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:02:03 BoogieIcfgContainer [2020-10-11 19:02:03,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 19:02:03,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 19:02:03,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 19:02:03,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 19:02:03,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:02:01" (1/3) ... [2020-10-11 19:02:03,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e7fe40d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:02:03, skipping insertion in model container [2020-10-11 19:02:03,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:02:02" (2/3) ... [2020-10-11 19:02:03,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e7fe40d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:02:03, skipping insertion in model container [2020-10-11 19:02:03,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:02:03" (3/3) ... [2020-10-11 19:02:03,817 INFO L111 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2020-10-11 19:02:03,829 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 19:02:03,837 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-11 19:02:03,838 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 19:02:03,871 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,871 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,871 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,872 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,872 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,872 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,872 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,872 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,873 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,873 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,873 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,873 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,873 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,874 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,874 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,874 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,874 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,875 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,875 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,875 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,875 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,876 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,876 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,876 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,876 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,876 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,877 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,877 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,877 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,877 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,878 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,878 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,878 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,878 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,878 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,878 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,879 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,879 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,879 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,879 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,879 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,880 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,880 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,880 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,881 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,881 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,881 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,881 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,882 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,882 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,882 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,882 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,882 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,883 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,883 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,883 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,883 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,884 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,887 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,887 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,888 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,888 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,888 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,888 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,888 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,889 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,889 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,889 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,899 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,899 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,899 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,899 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,900 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,900 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,900 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,900 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,900 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,901 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:02:03,923 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-11 19:02:03,942 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 19:02:03,942 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 19:02:03,942 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 19:02:03,943 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 19:02:03,943 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 19:02:03,943 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 19:02:03,943 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 19:02:03,943 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 19:02:03,961 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 150 places, 154 transitions, 330 flow [2020-10-11 19:02:04,031 INFO L129 PetriNetUnfolder]: 11/192 cut-off events. [2020-10-11 19:02:04,032 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-11 19:02:04,038 INFO L80 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 192 events. 11/192 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 370 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 107. Up to 4 conditions per place. [2020-10-11 19:02:04,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 154 transitions, 330 flow [2020-10-11 19:02:04,047 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 143 transitions, 304 flow [2020-10-11 19:02:04,056 INFO L129 PetriNetUnfolder]: 1/33 cut-off events. [2020-10-11 19:02:04,056 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 19:02:04,056 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:02:04,057 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:02:04,058 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:02:04,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:02:04,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1462968341, now seen corresponding path program 1 times [2020-10-11 19:02:04,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:02:04,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768564293] [2020-10-11 19:02:04,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:02:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:02:04,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:02:04,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768564293] [2020-10-11 19:02:04,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:02:04,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 19:02:04,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46451461] [2020-10-11 19:02:04,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 19:02:04,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:02:04,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 19:02:04,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 19:02:06,057 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 154 [2020-10-11 19:02:06,062 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 143 transitions, 304 flow. Second operand 6 states. [2020-10-11 19:02:06,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:02:06,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 154 [2020-10-11 19:02:06,065 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:02:06,330 INFO L129 PetriNetUnfolder]: 144/546 cut-off events. [2020-10-11 19:02:06,330 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-11 19:02:06,333 INFO L80 FinitePrefix]: Finished finitePrefix Result has 855 conditions, 546 events. 144/546 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3000 event pairs, 68 based on Foata normal form. 13/539 useless extension candidates. Maximal degree in co-relation 685. Up to 143 conditions per place. [2020-10-11 19:02:06,339 INFO L132 encePairwiseOnDemand]: 131/154 looper letters, 31 selfloop transitions, 18 changer transitions 0/143 dead transitions. [2020-10-11 19:02:06,339 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 143 transitions, 402 flow [2020-10-11 19:02:06,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 19:02:06,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 19:02:06,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 990 transitions. [2020-10-11 19:02:06,362 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2020-10-11 19:02:06,363 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 990 transitions. [2020-10-11 19:02:06,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 990 transitions. [2020-10-11 19:02:06,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:02:06,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 990 transitions. [2020-10-11 19:02:06,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 19:02:06,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 19:02:06,387 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 19:02:06,390 INFO L185 Difference]: Start difference. First operand has 141 places, 143 transitions, 304 flow. Second operand 9 states and 990 transitions. [2020-10-11 19:02:06,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 143 transitions, 402 flow [2020-10-11 19:02:06,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 143 transitions, 390 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-11 19:02:06,402 INFO L241 Difference]: Finished difference. Result has 144 places, 139 transitions, 332 flow [2020-10-11 19:02:06,405 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=332, PETRI_PLACES=144, PETRI_TRANSITIONS=139} [2020-10-11 19:02:06,406 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 3 predicate places. [2020-10-11 19:02:06,407 INFO L481 AbstractCegarLoop]: Abstraction has has 144 places, 139 transitions, 332 flow [2020-10-11 19:02:06,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 19:02:06,407 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:02:06,407 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:02:06,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 19:02:06,408 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:02:06,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:02:06,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1084695127, now seen corresponding path program 1 times [2020-10-11 19:02:06,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:02:06,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881119169] [2020-10-11 19:02:06,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:02:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:02:06,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:02:06,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881119169] [2020-10-11 19:02:06,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:02:06,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 19:02:06,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624005404] [2020-10-11 19:02:06,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 19:02:06,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:02:06,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 19:02:06,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 19:02:07,366 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 154 [2020-10-11 19:02:07,367 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 139 transitions, 332 flow. Second operand 6 states. [2020-10-11 19:02:07,367 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:02:07,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 154 [2020-10-11 19:02:07,367 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:02:07,615 INFO L129 PetriNetUnfolder]: 144/509 cut-off events. [2020-10-11 19:02:07,615 INFO L130 PetriNetUnfolder]: For 50/54 co-relation queries the response was YES. [2020-10-11 19:02:07,620 INFO L80 FinitePrefix]: Finished finitePrefix Result has 909 conditions, 509 events. 144/509 cut-off events. For 50/54 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2698 event pairs, 32 based on Foata normal form. 3/505 useless extension candidates. Maximal degree in co-relation 312. Up to 141 conditions per place. [2020-10-11 19:02:07,628 INFO L132 encePairwiseOnDemand]: 134/154 looper letters, 36 selfloop transitions, 19 changer transitions 0/148 dead transitions. [2020-10-11 19:02:07,629 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 148 transitions, 466 flow [2020-10-11 19:02:07,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 19:02:07,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 19:02:07,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1096 transitions. [2020-10-11 19:02:07,635 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7116883116883117 [2020-10-11 19:02:07,635 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1096 transitions. [2020-10-11 19:02:07,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1096 transitions. [2020-10-11 19:02:07,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:02:07,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1096 transitions. [2020-10-11 19:02:07,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 19:02:07,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 19:02:07,645 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 19:02:07,645 INFO L185 Difference]: Start difference. First operand has 144 places, 139 transitions, 332 flow. Second operand 10 states and 1096 transitions. [2020-10-11 19:02:07,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 148 transitions, 466 flow [2020-10-11 19:02:07,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 148 transitions, 436 flow, removed 0 selfloop flow, removed 7 redundant places. [2020-10-11 19:02:07,660 INFO L241 Difference]: Finished difference. Result has 145 places, 138 transitions, 345 flow [2020-10-11 19:02:07,661 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=345, PETRI_PLACES=145, PETRI_TRANSITIONS=138} [2020-10-11 19:02:07,662 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 4 predicate places. [2020-10-11 19:02:07,663 INFO L481 AbstractCegarLoop]: Abstraction has has 145 places, 138 transitions, 345 flow [2020-10-11 19:02:07,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 19:02:07,663 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:02:07,664 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:02:07,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 19:02:07,664 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:02:07,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:02:07,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1692348281, now seen corresponding path program 1 times [2020-10-11 19:02:07,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:02:07,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596074796] [2020-10-11 19:02:07,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:02:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:02:07,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:02:07,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596074796] [2020-10-11 19:02:07,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:02:07,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 19:02:07,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205568467] [2020-10-11 19:02:07,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 19:02:07,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:02:07,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 19:02:07,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 19:02:08,957 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 154 [2020-10-11 19:02:08,958 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 138 transitions, 345 flow. Second operand 6 states. [2020-10-11 19:02:08,958 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:02:08,958 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 154 [2020-10-11 19:02:08,958 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:02:09,529 INFO L129 PetriNetUnfolder]: 316/1007 cut-off events. [2020-10-11 19:02:09,529 INFO L130 PetriNetUnfolder]: For 131/135 co-relation queries the response was YES. [2020-10-11 19:02:09,533 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1856 conditions, 1007 events. 316/1007 cut-off events. For 131/135 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6468 event pairs, 32 based on Foata normal form. 18/1018 useless extension candidates. Maximal degree in co-relation 362. Up to 168 conditions per place. [2020-10-11 19:02:09,539 INFO L132 encePairwiseOnDemand]: 133/154 looper letters, 57 selfloop transitions, 49 changer transitions 0/198 dead transitions. [2020-10-11 19:02:09,539 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 198 transitions, 715 flow [2020-10-11 19:02:09,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 19:02:09,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-11 19:02:09,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1430 transitions. [2020-10-11 19:02:09,545 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2020-10-11 19:02:09,545 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1430 transitions. [2020-10-11 19:02:09,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1430 transitions. [2020-10-11 19:02:09,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:02:09,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1430 transitions. [2020-10-11 19:02:09,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-11 19:02:09,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-11 19:02:09,552 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-11 19:02:09,553 INFO L185 Difference]: Start difference. First operand has 145 places, 138 transitions, 345 flow. Second operand 13 states and 1430 transitions. [2020-10-11 19:02:09,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 198 transitions, 715 flow [2020-10-11 19:02:09,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 198 transitions, 668 flow, removed 0 selfloop flow, removed 8 redundant places. [2020-10-11 19:02:09,567 INFO L241 Difference]: Finished difference. Result has 157 places, 175 transitions, 626 flow [2020-10-11 19:02:09,568 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=626, PETRI_PLACES=157, PETRI_TRANSITIONS=175} [2020-10-11 19:02:09,568 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 16 predicate places. [2020-10-11 19:02:09,569 INFO L481 AbstractCegarLoop]: Abstraction has has 157 places, 175 transitions, 626 flow [2020-10-11 19:02:09,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 19:02:09,571 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:02:09,571 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:02:09,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 19:02:09,572 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:02:09,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:02:09,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1330747333, now seen corresponding path program 1 times [2020-10-11 19:02:09,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:02:09,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595197042] [2020-10-11 19:02:09,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:02:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:02:09,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:02:09,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595197042] [2020-10-11 19:02:09,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:02:09,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 19:02:09,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650213201] [2020-10-11 19:02:09,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 19:02:09,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:02:09,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 19:02:09,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 19:02:10,915 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 154 [2020-10-11 19:02:10,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 175 transitions, 626 flow. Second operand 6 states. [2020-10-11 19:02:10,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:02:10,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 154 [2020-10-11 19:02:10,917 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:02:11,622 INFO L129 PetriNetUnfolder]: 486/1384 cut-off events. [2020-10-11 19:02:11,623 INFO L130 PetriNetUnfolder]: For 7818/7834 co-relation queries the response was YES. [2020-10-11 19:02:11,629 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5406 conditions, 1384 events. 486/1384 cut-off events. For 7818/7834 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9598 event pairs, 56 based on Foata normal form. 26/1403 useless extension candidates. Maximal degree in co-relation 4555. Up to 447 conditions per place. [2020-10-11 19:02:11,642 INFO L132 encePairwiseOnDemand]: 135/154 looper letters, 48 selfloop transitions, 48 changer transitions 56/245 dead transitions. [2020-10-11 19:02:11,642 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 245 transitions, 1620 flow [2020-10-11 19:02:11,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 19:02:11,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 19:02:11,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1213 transitions. [2020-10-11 19:02:11,647 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7160566706021252 [2020-10-11 19:02:11,647 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1213 transitions. [2020-10-11 19:02:11,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1213 transitions. [2020-10-11 19:02:11,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:02:11,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1213 transitions. [2020-10-11 19:02:11,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 19:02:11,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 19:02:11,654 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 19:02:11,654 INFO L185 Difference]: Start difference. First operand has 157 places, 175 transitions, 626 flow. Second operand 11 states and 1213 transitions. [2020-10-11 19:02:11,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 245 transitions, 1620 flow [2020-10-11 19:02:11,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 245 transitions, 1598 flow, removed 11 selfloop flow, removed 0 redundant places. [2020-10-11 19:02:11,675 INFO L241 Difference]: Finished difference. Result has 175 places, 182 transitions, 933 flow [2020-10-11 19:02:11,676 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=933, PETRI_PLACES=175, PETRI_TRANSITIONS=182} [2020-10-11 19:02:11,676 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 34 predicate places. [2020-10-11 19:02:11,676 INFO L481 AbstractCegarLoop]: Abstraction has has 175 places, 182 transitions, 933 flow [2020-10-11 19:02:11,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 19:02:11,677 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:02:11,677 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:02:11,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 19:02:11,677 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:02:11,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:02:11,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1515257791, now seen corresponding path program 1 times [2020-10-11 19:02:11,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:02:11,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314923951] [2020-10-11 19:02:11,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:02:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:02:11,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:02:11,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314923951] [2020-10-11 19:02:11,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:02:11,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 19:02:11,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264050705] [2020-10-11 19:02:11,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 19:02:11,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:02:11,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 19:02:11,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 19:02:11,866 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 154 [2020-10-11 19:02:11,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 182 transitions, 933 flow. Second operand 5 states. [2020-10-11 19:02:11,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:02:11,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 154 [2020-10-11 19:02:11,867 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:02:11,930 INFO L129 PetriNetUnfolder]: 6/153 cut-off events. [2020-10-11 19:02:11,930 INFO L130 PetriNetUnfolder]: For 469/489 co-relation queries the response was YES. [2020-10-11 19:02:11,931 INFO L80 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 153 events. 6/153 cut-off events. For 469/489 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 273 event pairs, 4 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 332. Up to 14 conditions per place. [2020-10-11 19:02:11,932 INFO L132 encePairwiseOnDemand]: 149/154 looper letters, 4 selfloop transitions, 4 changer transitions 0/115 dead transitions. [2020-10-11 19:02:11,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 115 transitions, 388 flow [2020-10-11 19:02:11,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 19:02:11,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-11 19:02:11,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 837 transitions. [2020-10-11 19:02:11,935 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9058441558441559 [2020-10-11 19:02:11,935 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 837 transitions. [2020-10-11 19:02:11,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 837 transitions. [2020-10-11 19:02:11,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:02:11,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 837 transitions. [2020-10-11 19:02:11,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-11 19:02:11,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-11 19:02:11,940 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-11 19:02:11,940 INFO L185 Difference]: Start difference. First operand has 175 places, 182 transitions, 933 flow. Second operand 6 states and 837 transitions. [2020-10-11 19:02:11,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 115 transitions, 388 flow [2020-10-11 19:02:11,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 115 transitions, 272 flow, removed 40 selfloop flow, removed 17 redundant places. [2020-10-11 19:02:11,945 INFO L241 Difference]: Finished difference. Result has 126 places, 115 transitions, 264 flow [2020-10-11 19:02:11,945 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=264, PETRI_PLACES=126, PETRI_TRANSITIONS=115} [2020-10-11 19:02:11,946 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, -15 predicate places. [2020-10-11 19:02:11,946 INFO L481 AbstractCegarLoop]: Abstraction has has 126 places, 115 transitions, 264 flow [2020-10-11 19:02:11,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 19:02:11,946 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:02:11,947 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:02:11,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 19:02:11,947 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:02:11,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:02:11,948 INFO L82 PathProgramCache]: Analyzing trace with hash -171186143, now seen corresponding path program 1 times [2020-10-11 19:02:11,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:02:11,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036721923] [2020-10-11 19:02:11,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:02:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:02:12,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:02:12,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036721923] [2020-10-11 19:02:12,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:02:12,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-11 19:02:12,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50266104] [2020-10-11 19:02:12,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 19:02:12,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:02:12,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 19:02:12,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-10-11 19:02:25,033 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 154 [2020-10-11 19:02:25,034 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 115 transitions, 264 flow. Second operand 15 states. [2020-10-11 19:02:25,034 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:02:25,035 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 154 [2020-10-11 19:02:25,035 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:02:25,797 INFO L129 PetriNetUnfolder]: 62/385 cut-off events. [2020-10-11 19:02:25,797 INFO L130 PetriNetUnfolder]: For 70/82 co-relation queries the response was YES. [2020-10-11 19:02:25,801 INFO L80 FinitePrefix]: Finished finitePrefix Result has 644 conditions, 385 events. 62/385 cut-off events. For 70/82 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1659 event pairs, 23 based on Foata normal form. 2/379 useless extension candidates. Maximal degree in co-relation 635. Up to 61 conditions per place. [2020-10-11 19:02:25,803 INFO L132 encePairwiseOnDemand]: 129/154 looper letters, 46 selfloop transitions, 28 changer transitions 0/145 dead transitions. [2020-10-11 19:02:25,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 145 transitions, 484 flow [2020-10-11 19:02:25,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 19:02:25,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-11 19:02:25,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1587 transitions. [2020-10-11 19:02:25,813 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.6061879297173415 [2020-10-11 19:02:25,813 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1587 transitions. [2020-10-11 19:02:25,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1587 transitions. [2020-10-11 19:02:25,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:02:25,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1587 transitions. [2020-10-11 19:02:25,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 18 states. [2020-10-11 19:02:25,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 18 states. [2020-10-11 19:02:25,821 INFO L81 ComplementDD]: Finished complementDD. Result 18 states. [2020-10-11 19:02:25,821 INFO L185 Difference]: Start difference. First operand has 126 places, 115 transitions, 264 flow. Second operand 17 states and 1587 transitions. [2020-10-11 19:02:25,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 145 transitions, 484 flow [2020-10-11 19:02:25,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 145 transitions, 477 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-11 19:02:25,826 INFO L241 Difference]: Finished difference. Result has 146 places, 130 transitions, 410 flow [2020-10-11 19:02:25,827 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=410, PETRI_PLACES=146, PETRI_TRANSITIONS=130} [2020-10-11 19:02:25,827 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 5 predicate places. [2020-10-11 19:02:25,827 INFO L481 AbstractCegarLoop]: Abstraction has has 146 places, 130 transitions, 410 flow [2020-10-11 19:02:25,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 19:02:25,827 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:02:25,827 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:02:25,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 19:02:25,828 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:02:25,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:02:25,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1581165519, now seen corresponding path program 1 times [2020-10-11 19:02:25,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:02:25,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792034535] [2020-10-11 19:02:25,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:02:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:02:26,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:02:26,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792034535] [2020-10-11 19:02:26,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:02:26,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-11 19:02:26,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711141436] [2020-10-11 19:02:26,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 19:02:26,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:02:26,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 19:02:26,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-11 19:02:32,478 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 154 [2020-10-11 19:02:32,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 130 transitions, 410 flow. Second operand 15 states. [2020-10-11 19:02:32,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:02:32,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 154 [2020-10-11 19:02:32,480 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:02:33,204 INFO L129 PetriNetUnfolder]: 145/621 cut-off events. [2020-10-11 19:02:33,205 INFO L130 PetriNetUnfolder]: For 448/459 co-relation queries the response was YES. [2020-10-11 19:02:33,208 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1295 conditions, 621 events. 145/621 cut-off events. For 448/459 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3446 event pairs, 29 based on Foata normal form. 7/612 useless extension candidates. Maximal degree in co-relation 1279. Up to 228 conditions per place. [2020-10-11 19:02:33,211 INFO L132 encePairwiseOnDemand]: 139/154 looper letters, 43 selfloop transitions, 26 changer transitions 0/162 dead transitions. [2020-10-11 19:02:33,212 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 162 transitions, 695 flow [2020-10-11 19:02:33,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 19:02:33,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-11 19:02:33,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2002 transitions. [2020-10-11 19:02:33,218 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7647058823529411 [2020-10-11 19:02:33,218 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2002 transitions. [2020-10-11 19:02:33,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2002 transitions. [2020-10-11 19:02:33,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:02:33,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2002 transitions. [2020-10-11 19:02:33,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 18 states. [2020-10-11 19:02:33,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 18 states. [2020-10-11 19:02:33,228 INFO L81 ComplementDD]: Finished complementDD. Result 18 states. [2020-10-11 19:02:33,228 INFO L185 Difference]: Start difference. First operand has 146 places, 130 transitions, 410 flow. Second operand 17 states and 2002 transitions. [2020-10-11 19:02:33,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 162 transitions, 695 flow [2020-10-11 19:02:33,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 162 transitions, 677 flow, removed 1 selfloop flow, removed 6 redundant places. [2020-10-11 19:02:33,237 INFO L241 Difference]: Finished difference. Result has 163 places, 144 transitions, 561 flow [2020-10-11 19:02:33,237 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=561, PETRI_PLACES=163, PETRI_TRANSITIONS=144} [2020-10-11 19:02:33,238 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 22 predicate places. [2020-10-11 19:02:33,238 INFO L481 AbstractCegarLoop]: Abstraction has has 163 places, 144 transitions, 561 flow [2020-10-11 19:02:33,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 19:02:33,238 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:02:33,239 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:02:33,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 19:02:33,239 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:02:33,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:02:33,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1572462117, now seen corresponding path program 2 times [2020-10-11 19:02:33,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:02:33,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137305399] [2020-10-11 19:02:33,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:02:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:02:33,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:02:33,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137305399] [2020-10-11 19:02:33,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:02:33,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-11 19:02:33,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641450181] [2020-10-11 19:02:33,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 19:02:33,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:02:33,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 19:02:33,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-11 19:02:46,334 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 154 [2020-10-11 19:02:46,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 144 transitions, 561 flow. Second operand 15 states. [2020-10-11 19:02:46,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:02:46,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 154 [2020-10-11 19:02:46,336 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:02:47,309 INFO L129 PetriNetUnfolder]: 107/695 cut-off events. [2020-10-11 19:02:47,309 INFO L130 PetriNetUnfolder]: For 1004/1049 co-relation queries the response was YES. [2020-10-11 19:02:47,313 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1608 conditions, 695 events. 107/695 cut-off events. For 1004/1049 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4357 event pairs, 36 based on Foata normal form. 11/690 useless extension candidates. Maximal degree in co-relation 1584. Up to 122 conditions per place. [2020-10-11 19:02:47,316 INFO L132 encePairwiseOnDemand]: 132/154 looper letters, 68 selfloop transitions, 36 changer transitions 0/184 dead transitions. [2020-10-11 19:02:47,317 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 184 transitions, 1034 flow [2020-10-11 19:02:47,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 19:02:47,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-11 19:02:47,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1677 transitions. [2020-10-11 19:02:47,322 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.604978354978355 [2020-10-11 19:02:47,322 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1677 transitions. [2020-10-11 19:02:47,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1677 transitions. [2020-10-11 19:02:47,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:02:47,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1677 transitions. [2020-10-11 19:02:47,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 19 states. [2020-10-11 19:02:47,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 19 states. [2020-10-11 19:02:47,333 INFO L81 ComplementDD]: Finished complementDD. Result 19 states. [2020-10-11 19:02:47,334 INFO L185 Difference]: Start difference. First operand has 163 places, 144 transitions, 561 flow. Second operand 18 states and 1677 transitions. [2020-10-11 19:02:47,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 184 transitions, 1034 flow [2020-10-11 19:02:47,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 184 transitions, 971 flow, removed 26 selfloop flow, removed 6 redundant places. [2020-10-11 19:02:47,342 INFO L241 Difference]: Finished difference. Result has 184 places, 164 transitions, 805 flow [2020-10-11 19:02:47,342 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=805, PETRI_PLACES=184, PETRI_TRANSITIONS=164} [2020-10-11 19:02:47,342 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 43 predicate places. [2020-10-11 19:02:47,342 INFO L481 AbstractCegarLoop]: Abstraction has has 184 places, 164 transitions, 805 flow [2020-10-11 19:02:47,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 19:02:47,343 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:02:47,343 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:02:47,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 19:02:47,343 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:02:47,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:02:47,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1943896587, now seen corresponding path program 3 times [2020-10-11 19:02:47,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:02:47,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649397536] [2020-10-11 19:02:47,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:02:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:02:48,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:02:48,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649397536] [2020-10-11 19:02:48,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:02:48,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-11 19:02:48,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597470801] [2020-10-11 19:02:48,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 19:02:48,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:02:48,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 19:02:48,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-10-11 19:03:09,457 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 154 [2020-10-11 19:03:09,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 164 transitions, 805 flow. Second operand 18 states. [2020-10-11 19:03:09,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:03:09,459 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 154 [2020-10-11 19:03:09,459 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:03:10,579 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2020-10-11 19:03:11,066 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-10-11 19:03:11,216 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-10-11 19:03:11,381 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-10-11 19:03:11,522 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-10-11 19:03:11,657 INFO L129 PetriNetUnfolder]: 435/2253 cut-off events. [2020-10-11 19:03:11,657 INFO L130 PetriNetUnfolder]: For 3250/3301 co-relation queries the response was YES. [2020-10-11 19:03:11,669 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5428 conditions, 2253 events. 435/2253 cut-off events. For 3250/3301 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 20853 event pairs, 102 based on Foata normal form. 17/2243 useless extension candidates. Maximal degree in co-relation 5394. Up to 378 conditions per place. [2020-10-11 19:03:11,678 INFO L132 encePairwiseOnDemand]: 128/154 looper letters, 117 selfloop transitions, 53 changer transitions 0/254 dead transitions. [2020-10-11 19:03:11,678 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 254 transitions, 1717 flow [2020-10-11 19:03:11,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 19:03:11,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-11 19:03:11,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1715 transitions. [2020-10-11 19:03:11,684 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5861244019138756 [2020-10-11 19:03:11,684 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1715 transitions. [2020-10-11 19:03:11,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1715 transitions. [2020-10-11 19:03:11,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:03:11,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1715 transitions. [2020-10-11 19:03:11,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 20 states. [2020-10-11 19:03:11,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 20 states. [2020-10-11 19:03:11,693 INFO L81 ComplementDD]: Finished complementDD. Result 20 states. [2020-10-11 19:03:11,693 INFO L185 Difference]: Start difference. First operand has 184 places, 164 transitions, 805 flow. Second operand 19 states and 1715 transitions. [2020-10-11 19:03:11,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 254 transitions, 1717 flow [2020-10-11 19:03:11,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 254 transitions, 1684 flow, removed 10 selfloop flow, removed 5 redundant places. [2020-10-11 19:03:11,713 INFO L241 Difference]: Finished difference. Result has 208 places, 200 transitions, 1248 flow [2020-10-11 19:03:11,713 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1248, PETRI_PLACES=208, PETRI_TRANSITIONS=200} [2020-10-11 19:03:11,713 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 67 predicate places. [2020-10-11 19:03:11,714 INFO L481 AbstractCegarLoop]: Abstraction has has 208 places, 200 transitions, 1248 flow [2020-10-11 19:03:11,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 19:03:11,714 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:03:11,714 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:03:11,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 19:03:11,714 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:03:11,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:03:11,715 INFO L82 PathProgramCache]: Analyzing trace with hash 409440837, now seen corresponding path program 4 times [2020-10-11 19:03:11,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:03:11,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981493630] [2020-10-11 19:03:11,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:03:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:03:12,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:03:12,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981493630] [2020-10-11 19:03:12,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:03:12,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-11 19:03:12,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054177182] [2020-10-11 19:03:12,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 19:03:12,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:03:12,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 19:03:12,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-11 19:03:21,537 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 154 [2020-10-11 19:03:21,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 200 transitions, 1248 flow. Second operand 15 states. [2020-10-11 19:03:21,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:03:21,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 154 [2020-10-11 19:03:21,539 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:03:22,814 INFO L129 PetriNetUnfolder]: 333/2364 cut-off events. [2020-10-11 19:03:22,814 INFO L130 PetriNetUnfolder]: For 5331/5444 co-relation queries the response was YES. [2020-10-11 19:03:22,832 INFO L80 FinitePrefix]: Finished finitePrefix Result has 6126 conditions, 2364 events. 333/2364 cut-off events. For 5331/5444 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 23683 event pairs, 63 based on Foata normal form. 75/2401 useless extension candidates. Maximal degree in co-relation 6082. Up to 424 conditions per place. [2020-10-11 19:03:22,843 INFO L132 encePairwiseOnDemand]: 130/154 looper letters, 88 selfloop transitions, 95 changer transitions 0/267 dead transitions. [2020-10-11 19:03:22,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 267 transitions, 2175 flow [2020-10-11 19:03:22,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 19:03:22,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-11 19:03:22,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1780 transitions. [2020-10-11 19:03:22,848 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.608339029391661 [2020-10-11 19:03:22,848 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1780 transitions. [2020-10-11 19:03:22,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1780 transitions. [2020-10-11 19:03:22,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:03:22,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1780 transitions. [2020-10-11 19:03:22,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 20 states. [2020-10-11 19:03:22,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 20 states. [2020-10-11 19:03:22,856 INFO L81 ComplementDD]: Finished complementDD. Result 20 states. [2020-10-11 19:03:22,857 INFO L185 Difference]: Start difference. First operand has 208 places, 200 transitions, 1248 flow. Second operand 19 states and 1780 transitions. [2020-10-11 19:03:22,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 267 transitions, 2175 flow [2020-10-11 19:03:22,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 267 transitions, 2139 flow, removed 10 selfloop flow, removed 5 redundant places. [2020-10-11 19:03:22,886 INFO L241 Difference]: Finished difference. Result has 229 places, 236 transitions, 1943 flow [2020-10-11 19:03:22,887 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1943, PETRI_PLACES=229, PETRI_TRANSITIONS=236} [2020-10-11 19:03:22,887 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 88 predicate places. [2020-10-11 19:03:22,887 INFO L481 AbstractCegarLoop]: Abstraction has has 229 places, 236 transitions, 1943 flow [2020-10-11 19:03:22,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 19:03:22,888 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:03:22,888 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:03:22,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-11 19:03:22,888 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:03:22,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:03:22,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1972397443, now seen corresponding path program 5 times [2020-10-11 19:03:22,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:03:22,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129820869] [2020-10-11 19:03:22,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:03:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:03:23,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:03:23,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129820869] [2020-10-11 19:03:23,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:03:23,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-11 19:03:23,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803464449] [2020-10-11 19:03:23,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 19:03:23,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:03:23,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 19:03:23,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-11 19:03:36,326 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 154 [2020-10-11 19:03:36,328 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 236 transitions, 1943 flow. Second operand 15 states. [2020-10-11 19:03:36,328 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:03:36,328 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 154 [2020-10-11 19:03:36,328 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:03:37,614 INFO L129 PetriNetUnfolder]: 332/2485 cut-off events. [2020-10-11 19:03:37,615 INFO L130 PetriNetUnfolder]: For 8928/9126 co-relation queries the response was YES. [2020-10-11 19:03:37,630 INFO L80 FinitePrefix]: Finished finitePrefix Result has 7182 conditions, 2485 events. 332/2485 cut-off events. For 8928/9126 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 25247 event pairs, 88 based on Foata normal form. 69/2510 useless extension candidates. Maximal degree in co-relation 7129. Up to 427 conditions per place. [2020-10-11 19:03:37,638 INFO L132 encePairwiseOnDemand]: 131/154 looper letters, 135 selfloop transitions, 71 changer transitions 0/290 dead transitions. [2020-10-11 19:03:37,639 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 290 transitions, 2875 flow [2020-10-11 19:03:37,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 19:03:37,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-11 19:03:37,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1780 transitions. [2020-10-11 19:03:37,642 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.608339029391661 [2020-10-11 19:03:37,643 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1780 transitions. [2020-10-11 19:03:37,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1780 transitions. [2020-10-11 19:03:37,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:03:37,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1780 transitions. [2020-10-11 19:03:37,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 20 states. [2020-10-11 19:03:37,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 20 states. [2020-10-11 19:03:37,650 INFO L81 ComplementDD]: Finished complementDD. Result 20 states. [2020-10-11 19:03:37,651 INFO L185 Difference]: Start difference. First operand has 229 places, 236 transitions, 1943 flow. Second operand 19 states and 1780 transitions. [2020-10-11 19:03:37,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 290 transitions, 2875 flow [2020-10-11 19:03:37,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 290 transitions, 2782 flow, removed 33 selfloop flow, removed 6 redundant places. [2020-10-11 19:03:37,699 INFO L241 Difference]: Finished difference. Result has 250 places, 259 transitions, 2410 flow [2020-10-11 19:03:37,699 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2410, PETRI_PLACES=250, PETRI_TRANSITIONS=259} [2020-10-11 19:03:37,700 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 109 predicate places. [2020-10-11 19:03:37,700 INFO L481 AbstractCegarLoop]: Abstraction has has 250 places, 259 transitions, 2410 flow [2020-10-11 19:03:37,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 19:03:37,700 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:03:37,700 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:03:37,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-11 19:03:37,701 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:03:37,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:03:37,701 INFO L82 PathProgramCache]: Analyzing trace with hash -124467599, now seen corresponding path program 6 times [2020-10-11 19:03:37,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:03:37,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856292640] [2020-10-11 19:03:37,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:03:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:03:38,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:03:38,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856292640] [2020-10-11 19:03:38,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:03:38,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-11 19:03:38,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061313839] [2020-10-11 19:03:38,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 19:03:38,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:03:38,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 19:03:38,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-10-11 19:04:00,844 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 154 [2020-10-11 19:04:00,845 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 259 transitions, 2410 flow. Second operand 18 states. [2020-10-11 19:04:00,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:04:00,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 154 [2020-10-11 19:04:00,846 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:04:01,609 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-11 19:04:01,851 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-11 19:04:02,437 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-10-11 19:04:03,234 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-11 19:04:03,498 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-10-11 19:04:03,717 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-11 19:04:03,980 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-11 19:04:04,238 INFO L129 PetriNetUnfolder]: 604/3483 cut-off events. [2020-10-11 19:04:04,239 INFO L130 PetriNetUnfolder]: For 15630/15803 co-relation queries the response was YES. [2020-10-11 19:04:04,259 INFO L80 FinitePrefix]: Finished finitePrefix Result has 10966 conditions, 3483 events. 604/3483 cut-off events. For 15630/15803 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 36786 event pairs, 101 based on Foata normal form. 96/3528 useless extension candidates. Maximal degree in co-relation 10903. Up to 596 conditions per place. [2020-10-11 19:04:04,272 INFO L132 encePairwiseOnDemand]: 128/154 looper letters, 143 selfloop transitions, 152 changer transitions 0/367 dead transitions. [2020-10-11 19:04:04,272 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 367 transitions, 4106 flow [2020-10-11 19:04:04,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-11 19:04:04,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-11 19:04:04,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2510 transitions. [2020-10-11 19:04:04,276 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5820964749536178 [2020-10-11 19:04:04,277 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2510 transitions. [2020-10-11 19:04:04,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2510 transitions. [2020-10-11 19:04:04,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:04:04,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2510 transitions. [2020-10-11 19:04:04,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 29 states. [2020-10-11 19:04:04,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 29 states. [2020-10-11 19:04:04,286 INFO L81 ComplementDD]: Finished complementDD. Result 29 states. [2020-10-11 19:04:04,286 INFO L185 Difference]: Start difference. First operand has 250 places, 259 transitions, 2410 flow. Second operand 28 states and 2510 transitions. [2020-10-11 19:04:04,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 367 transitions, 4106 flow [2020-10-11 19:04:04,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 367 transitions, 4015 flow, removed 37 selfloop flow, removed 5 redundant places. [2020-10-11 19:04:04,372 INFO L241 Difference]: Finished difference. Result has 285 places, 316 transitions, 3656 flow [2020-10-11 19:04:04,373 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=2335, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3656, PETRI_PLACES=285, PETRI_TRANSITIONS=316} [2020-10-11 19:04:04,373 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 144 predicate places. [2020-10-11 19:04:04,373 INFO L481 AbstractCegarLoop]: Abstraction has has 285 places, 316 transitions, 3656 flow [2020-10-11 19:04:04,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 19:04:04,373 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:04:04,374 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:04:04,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-11 19:04:04,374 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:04:04,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:04:04,375 INFO L82 PathProgramCache]: Analyzing trace with hash 580989803, now seen corresponding path program 7 times [2020-10-11 19:04:04,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:04:04,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40865646] [2020-10-11 19:04:04,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:04:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:04:04,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:04:04,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40865646] [2020-10-11 19:04:04,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:04:04,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-11 19:04:04,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267057291] [2020-10-11 19:04:04,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 19:04:04,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:04:04,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 19:04:04,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-10-11 19:04:18,397 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 154 [2020-10-11 19:04:18,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 316 transitions, 3656 flow. Second operand 15 states. [2020-10-11 19:04:18,398 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:04:18,398 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 154 [2020-10-11 19:04:18,399 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:04:19,985 INFO L129 PetriNetUnfolder]: 637/4362 cut-off events. [2020-10-11 19:04:19,985 INFO L130 PetriNetUnfolder]: For 24728/24999 co-relation queries the response was YES. [2020-10-11 19:04:20,024 INFO L80 FinitePrefix]: Finished finitePrefix Result has 14422 conditions, 4362 events. 637/4362 cut-off events. For 24728/24999 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 50808 event pairs, 80 based on Foata normal form. 106/4432 useless extension candidates. Maximal degree in co-relation 14346. Up to 747 conditions per place. [2020-10-11 19:04:20,046 INFO L132 encePairwiseOnDemand]: 129/154 looper letters, 171 selfloop transitions, 124 changer transitions 0/414 dead transitions. [2020-10-11 19:04:20,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 414 transitions, 5614 flow [2020-10-11 19:04:20,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 19:04:20,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-11 19:04:20,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1587 transitions. [2020-10-11 19:04:20,053 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.6061879297173415 [2020-10-11 19:04:20,053 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1587 transitions. [2020-10-11 19:04:20,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1587 transitions. [2020-10-11 19:04:20,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:04:20,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1587 transitions. [2020-10-11 19:04:20,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 18 states. [2020-10-11 19:04:20,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 18 states. [2020-10-11 19:04:20,060 INFO L81 ComplementDD]: Finished complementDD. Result 18 states. [2020-10-11 19:04:20,060 INFO L185 Difference]: Start difference. First operand has 285 places, 316 transitions, 3656 flow. Second operand 17 states and 1587 transitions. [2020-10-11 19:04:20,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 414 transitions, 5614 flow [2020-10-11 19:04:20,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 414 transitions, 5414 flow, removed 68 selfloop flow, removed 7 redundant places. [2020-10-11 19:04:20,229 INFO L241 Difference]: Finished difference. Result has 302 places, 367 transitions, 4716 flow [2020-10-11 19:04:20,230 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=3513, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4716, PETRI_PLACES=302, PETRI_TRANSITIONS=367} [2020-10-11 19:04:20,230 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 161 predicate places. [2020-10-11 19:04:20,230 INFO L481 AbstractCegarLoop]: Abstraction has has 302 places, 367 transitions, 4716 flow [2020-10-11 19:04:20,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 19:04:20,230 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:04:20,231 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:04:20,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-11 19:04:20,231 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:04:20,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:04:20,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1841719611, now seen corresponding path program 8 times [2020-10-11 19:04:20,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:04:20,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963912393] [2020-10-11 19:04:20,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:04:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:04:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:04:20,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963912393] [2020-10-11 19:04:20,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:04:20,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-11 19:04:20,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646808984] [2020-10-11 19:04:20,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 19:04:20,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:04:20,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 19:04:20,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-11 19:04:34,335 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 154 [2020-10-11 19:04:34,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 367 transitions, 4716 flow. Second operand 15 states. [2020-10-11 19:04:34,337 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:04:34,337 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 154 [2020-10-11 19:04:34,337 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:04:36,397 INFO L129 PetriNetUnfolder]: 779/5899 cut-off events. [2020-10-11 19:04:36,397 INFO L130 PetriNetUnfolder]: For 41409/42196 co-relation queries the response was YES. [2020-10-11 19:04:36,432 INFO L80 FinitePrefix]: Finished finitePrefix Result has 21184 conditions, 5899 events. 779/5899 cut-off events. For 41409/42196 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 74684 event pairs, 85 based on Foata normal form. 444/6302 useless extension candidates. Maximal degree in co-relation 21101. Up to 1001 conditions per place. [2020-10-11 19:04:36,450 INFO L132 encePairwiseOnDemand]: 129/154 looper letters, 240 selfloop transitions, 186 changer transitions 0/545 dead transitions. [2020-10-11 19:04:36,450 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 545 transitions, 8172 flow [2020-10-11 19:04:36,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 19:04:36,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-11 19:04:36,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1783 transitions. [2020-10-11 19:04:36,457 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.6093643198906357 [2020-10-11 19:04:36,457 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1783 transitions. [2020-10-11 19:04:36,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1783 transitions. [2020-10-11 19:04:36,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:04:36,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1783 transitions. [2020-10-11 19:04:36,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 20 states. [2020-10-11 19:04:36,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 20 states. [2020-10-11 19:04:36,464 INFO L81 ComplementDD]: Finished complementDD. Result 20 states. [2020-10-11 19:04:36,464 INFO L185 Difference]: Start difference. First operand has 302 places, 367 transitions, 4716 flow. Second operand 19 states and 1783 transitions. [2020-10-11 19:04:36,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 545 transitions, 8172 flow [2020-10-11 19:04:36,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 545 transitions, 8090 flow, removed 22 selfloop flow, removed 6 redundant places. [2020-10-11 19:04:36,682 INFO L241 Difference]: Finished difference. Result has 322 places, 445 transitions, 6691 flow [2020-10-11 19:04:36,682 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=4634, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6691, PETRI_PLACES=322, PETRI_TRANSITIONS=445} [2020-10-11 19:04:36,683 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 181 predicate places. [2020-10-11 19:04:36,683 INFO L481 AbstractCegarLoop]: Abstraction has has 322 places, 445 transitions, 6691 flow [2020-10-11 19:04:36,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 19:04:36,683 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:04:36,683 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:04:36,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-11 19:04:36,684 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:04:36,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:04:36,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1373427609, now seen corresponding path program 9 times [2020-10-11 19:04:36,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:04:36,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116422624] [2020-10-11 19:04:36,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:04:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:04:37,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:04:37,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116422624] [2020-10-11 19:04:37,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:04:37,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-11 19:04:37,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897546041] [2020-10-11 19:04:37,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 19:04:37,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:04:37,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 19:04:37,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-11 19:04:45,696 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 154 [2020-10-11 19:04:45,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 445 transitions, 6691 flow. Second operand 15 states. [2020-10-11 19:04:45,698 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:04:45,698 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 154 [2020-10-11 19:04:45,698 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:04:48,186 INFO L129 PetriNetUnfolder]: 904/7156 cut-off events. [2020-10-11 19:04:48,186 INFO L130 PetriNetUnfolder]: For 62283/63730 co-relation queries the response was YES. [2020-10-11 19:04:48,255 INFO L80 FinitePrefix]: Finished finitePrefix Result has 27503 conditions, 7156 events. 904/7156 cut-off events. For 62283/63730 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 94471 event pairs, 170 based on Foata normal form. 532/7637 useless extension candidates. Maximal degree in co-relation 27411. Up to 1300 conditions per place. [2020-10-11 19:04:48,280 INFO L132 encePairwiseOnDemand]: 132/154 looper letters, 260 selfloop transitions, 182 changer transitions 0/561 dead transitions. [2020-10-11 19:04:48,281 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 561 transitions, 9415 flow [2020-10-11 19:04:48,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 19:04:48,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-11 19:04:48,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1678 transitions. [2020-10-11 19:04:48,284 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.6053391053391053 [2020-10-11 19:04:48,284 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1678 transitions. [2020-10-11 19:04:48,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1678 transitions. [2020-10-11 19:04:48,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:04:48,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1678 transitions. [2020-10-11 19:04:48,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 19 states. [2020-10-11 19:04:48,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 19 states. [2020-10-11 19:04:48,290 INFO L81 ComplementDD]: Finished complementDD. Result 19 states. [2020-10-11 19:04:48,290 INFO L185 Difference]: Start difference. First operand has 322 places, 445 transitions, 6691 flow. Second operand 18 states and 1678 transitions. [2020-10-11 19:04:48,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 561 transitions, 9415 flow [2020-10-11 19:04:48,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 561 transitions, 9306 flow, removed 24 selfloop flow, removed 6 redundant places. [2020-10-11 19:04:48,576 INFO L241 Difference]: Finished difference. Result has 343 places, 496 transitions, 8081 flow [2020-10-11 19:04:48,576 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=6613, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8081, PETRI_PLACES=343, PETRI_TRANSITIONS=496} [2020-10-11 19:04:48,577 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 202 predicate places. [2020-10-11 19:04:48,577 INFO L481 AbstractCegarLoop]: Abstraction has has 343 places, 496 transitions, 8081 flow [2020-10-11 19:04:48,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 19:04:48,577 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:04:48,577 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:04:48,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-11 19:04:48,578 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:04:48,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:04:48,578 INFO L82 PathProgramCache]: Analyzing trace with hash 712012765, now seen corresponding path program 10 times [2020-10-11 19:04:48,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:04:48,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251715912] [2020-10-11 19:04:48,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:04:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:04:49,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:04:49,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251715912] [2020-10-11 19:04:49,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:04:49,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-11 19:04:49,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708856459] [2020-10-11 19:04:49,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 19:04:49,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:04:49,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 19:04:49,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2020-10-11 19:05:17,153 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 154 [2020-10-11 19:05:17,154 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 496 transitions, 8081 flow. Second operand 19 states. [2020-10-11 19:05:17,154 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:05:17,155 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 154 [2020-10-11 19:05:17,155 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:05:17,852 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-10-11 19:05:18,082 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2020-10-11 19:05:18,478 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-10-11 19:05:20,226 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2020-10-11 19:05:20,414 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2020-10-11 19:05:20,574 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2020-10-11 19:05:20,788 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2020-10-11 19:05:20,982 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-10-11 19:05:21,035 INFO L129 PetriNetUnfolder]: 1065/7639 cut-off events. [2020-10-11 19:05:21,035 INFO L130 PetriNetUnfolder]: For 75367/76820 co-relation queries the response was YES. [2020-10-11 19:05:21,098 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31154 conditions, 7639 events. 1065/7639 cut-off events. For 75367/76820 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 100179 event pairs, 152 based on Foata normal form. 469/8073 useless extension candidates. Maximal degree in co-relation 31051. Up to 1687 conditions per place. [2020-10-11 19:05:21,115 INFO L132 encePairwiseOnDemand]: 128/154 looper letters, 331 selfloop transitions, 206 changer transitions 0/607 dead transitions. [2020-10-11 19:05:21,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 607 transitions, 10837 flow [2020-10-11 19:05:21,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 19:05:21,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-11 19:05:21,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1700 transitions. [2020-10-11 19:05:21,127 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5809979494190021 [2020-10-11 19:05:21,128 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1700 transitions. [2020-10-11 19:05:21,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1700 transitions. [2020-10-11 19:05:21,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:05:21,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1700 transitions. [2020-10-11 19:05:21,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 20 states. [2020-10-11 19:05:21,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 20 states. [2020-10-11 19:05:21,141 INFO L81 ComplementDD]: Finished complementDD. Result 20 states. [2020-10-11 19:05:21,142 INFO L185 Difference]: Start difference. First operand has 343 places, 496 transitions, 8081 flow. Second operand 19 states and 1700 transitions. [2020-10-11 19:05:21,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 607 transitions, 10837 flow [2020-10-11 19:05:21,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 607 transitions, 10710 flow, removed 57 selfloop flow, removed 5 redundant places. [2020-10-11 19:05:21,507 INFO L241 Difference]: Finished difference. Result has 365 places, 540 transitions, 9526 flow [2020-10-11 19:05:21,508 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=7958, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9526, PETRI_PLACES=365, PETRI_TRANSITIONS=540} [2020-10-11 19:05:21,508 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 224 predicate places. [2020-10-11 19:05:21,509 INFO L481 AbstractCegarLoop]: Abstraction has has 365 places, 540 transitions, 9526 flow [2020-10-11 19:05:21,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 19:05:21,509 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:05:21,509 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:05:21,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-11 19:05:21,509 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:05:21,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:05:21,510 INFO L82 PathProgramCache]: Analyzing trace with hash -173846115, now seen corresponding path program 11 times [2020-10-11 19:05:21,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:05:21,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326187851] [2020-10-11 19:05:21,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:05:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:05:22,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:05:22,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326187851] [2020-10-11 19:05:22,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:05:22,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-11 19:05:22,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894775338] [2020-10-11 19:05:22,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 19:05:22,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:05:22,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 19:05:22,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-11 19:05:36,168 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 154 [2020-10-11 19:05:36,169 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 540 transitions, 9526 flow. Second operand 15 states. [2020-10-11 19:05:36,169 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:05:36,169 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 154 [2020-10-11 19:05:36,169 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:05:38,913 INFO L129 PetriNetUnfolder]: 904/7503 cut-off events. [2020-10-11 19:05:38,913 INFO L130 PetriNetUnfolder]: For 85269/86762 co-relation queries the response was YES. [2020-10-11 19:05:39,027 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31673 conditions, 7503 events. 904/7503 cut-off events. For 85269/86762 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 99886 event pairs, 133 based on Foata normal form. 608/8052 useless extension candidates. Maximal degree in co-relation 31562. Up to 1218 conditions per place. [2020-10-11 19:05:39,050 INFO L132 encePairwiseOnDemand]: 131/154 looper letters, 357 selfloop transitions, 235 changer transitions 0/711 dead transitions. [2020-10-11 19:05:39,051 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 711 transitions, 13845 flow [2020-10-11 19:05:39,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 19:05:39,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-11 19:05:39,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1781 transitions. [2020-10-11 19:05:39,054 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.6086807928913192 [2020-10-11 19:05:39,054 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1781 transitions. [2020-10-11 19:05:39,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1781 transitions. [2020-10-11 19:05:39,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:05:39,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1781 transitions. [2020-10-11 19:05:39,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 20 states. [2020-10-11 19:05:39,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 20 states. [2020-10-11 19:05:39,060 INFO L81 ComplementDD]: Finished complementDD. Result 20 states. [2020-10-11 19:05:39,060 INFO L185 Difference]: Start difference. First operand has 365 places, 540 transitions, 9526 flow. Second operand 19 states and 1781 transitions. [2020-10-11 19:05:39,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 711 transitions, 13845 flow [2020-10-11 19:05:39,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 711 transitions, 13707 flow, removed 46 selfloop flow, removed 7 redundant places. [2020-10-11 19:05:39,725 INFO L241 Difference]: Finished difference. Result has 385 places, 607 transitions, 11856 flow [2020-10-11 19:05:39,726 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=9400, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=11856, PETRI_PLACES=385, PETRI_TRANSITIONS=607} [2020-10-11 19:05:39,728 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 244 predicate places. [2020-10-11 19:05:39,728 INFO L481 AbstractCegarLoop]: Abstraction has has 385 places, 607 transitions, 11856 flow [2020-10-11 19:05:39,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 19:05:39,728 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:05:39,729 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:05:39,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-11 19:05:39,729 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:05:39,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:05:39,729 INFO L82 PathProgramCache]: Analyzing trace with hash -993893011, now seen corresponding path program 12 times [2020-10-11 19:05:39,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:05:39,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367785062] [2020-10-11 19:05:39,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:05:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:05:40,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:05:40,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367785062] [2020-10-11 19:05:40,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:05:40,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-11 19:05:40,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412490622] [2020-10-11 19:05:40,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 19:05:40,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:05:40,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 19:05:40,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2020-10-11 19:05:58,808 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 154 [2020-10-11 19:05:58,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 607 transitions, 11856 flow. Second operand 18 states. [2020-10-11 19:05:58,810 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:05:58,810 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 154 [2020-10-11 19:05:58,810 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:05:59,650 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-11 19:05:59,937 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-11 19:06:00,427 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-11 19:06:00,813 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-11 19:06:02,779 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-11 19:06:03,077 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-10-11 19:06:03,339 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-11 19:06:03,689 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-11 19:06:04,005 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-11 19:06:04,104 INFO L129 PetriNetUnfolder]: 1018/7943 cut-off events. [2020-10-11 19:06:04,104 INFO L130 PetriNetUnfolder]: For 101154/102382 co-relation queries the response was YES. [2020-10-11 19:06:04,232 INFO L80 FinitePrefix]: Finished finitePrefix Result has 34833 conditions, 7943 events. 1018/7943 cut-off events. For 101154/102382 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 105253 event pairs, 114 based on Foata normal form. 880/8784 useless extension candidates. Maximal degree in co-relation 34712. Up to 1271 conditions per place. [2020-10-11 19:06:04,269 INFO L132 encePairwiseOnDemand]: 128/154 looper letters, 290 selfloop transitions, 351 changer transitions 0/723 dead transitions. [2020-10-11 19:06:04,269 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 723 transitions, 14933 flow [2020-10-11 19:06:04,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 19:06:04,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-11 19:06:04,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2597 transitions. [2020-10-11 19:06:04,274 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5815047021943573 [2020-10-11 19:06:04,274 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2597 transitions. [2020-10-11 19:06:04,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2597 transitions. [2020-10-11 19:06:04,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:06:04,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2597 transitions. [2020-10-11 19:06:04,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-11 19:06:04,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-11 19:06:04,284 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-11 19:06:04,284 INFO L185 Difference]: Start difference. First operand has 385 places, 607 transitions, 11856 flow. Second operand 29 states and 2597 transitions. [2020-10-11 19:06:04,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 723 transitions, 14933 flow [2020-10-11 19:06:05,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 723 transitions, 14649 flow, removed 109 selfloop flow, removed 6 redundant places. [2020-10-11 19:06:05,049 INFO L241 Difference]: Finished difference. Result has 415 places, 640 transitions, 13468 flow [2020-10-11 19:06:05,050 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=11621, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=318, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=13468, PETRI_PLACES=415, PETRI_TRANSITIONS=640} [2020-10-11 19:06:05,050 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 274 predicate places. [2020-10-11 19:06:05,050 INFO L481 AbstractCegarLoop]: Abstraction has has 415 places, 640 transitions, 13468 flow [2020-10-11 19:06:05,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 19:06:05,051 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:06:05,051 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:06:05,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-11 19:06:05,051 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:06:05,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:06:05,051 INFO L82 PathProgramCache]: Analyzing trace with hash -47181049, now seen corresponding path program 13 times [2020-10-11 19:06:05,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:06:05,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730355729] [2020-10-11 19:06:05,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:06:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:06:05,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:06:05,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730355729] [2020-10-11 19:06:05,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:06:05,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-11 19:06:05,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821435707] [2020-10-11 19:06:05,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 19:06:05,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:06:05,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 19:06:05,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-10-11 19:06:30,339 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 154 [2020-10-11 19:06:30,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 640 transitions, 13468 flow. Second operand 18 states. [2020-10-11 19:06:30,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:06:30,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 154 [2020-10-11 19:06:30,340 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:06:30,916 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-10-11 19:06:31,082 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-10-11 19:06:31,253 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2020-10-11 19:06:31,400 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-11 19:06:31,818 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-10-11 19:06:32,029 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-10-11 19:06:34,128 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-10-11 19:06:34,302 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-11 19:06:34,456 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-11 19:06:34,942 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-10-11 19:06:35,077 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-10-11 19:06:35,234 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-11 19:06:35,445 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-11 19:06:35,615 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-11 19:06:35,970 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-11 19:06:36,067 INFO L129 PetriNetUnfolder]: 1177/9289 cut-off events. [2020-10-11 19:06:36,067 INFO L130 PetriNetUnfolder]: For 129573/131447 co-relation queries the response was YES. [2020-10-11 19:06:36,165 INFO L80 FinitePrefix]: Finished finitePrefix Result has 42047 conditions, 9289 events. 1177/9289 cut-off events. For 129573/131447 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 127044 event pairs, 179 based on Foata normal form. 834/10081 useless extension candidates. Maximal degree in co-relation 41919. Up to 1518 conditions per place. [2020-10-11 19:06:36,184 INFO L132 encePairwiseOnDemand]: 127/154 looper letters, 425 selfloop transitions, 336 changer transitions 0/870 dead transitions. [2020-10-11 19:06:36,184 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 870 transitions, 19334 flow [2020-10-11 19:06:36,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-11 19:06:36,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-11 19:06:36,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2335 transitions. [2020-10-11 19:06:36,187 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5831668331668332 [2020-10-11 19:06:36,188 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2335 transitions. [2020-10-11 19:06:36,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2335 transitions. [2020-10-11 19:06:36,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:06:36,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2335 transitions. [2020-10-11 19:06:36,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 27 states. [2020-10-11 19:06:36,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 27 states. [2020-10-11 19:06:36,195 INFO L81 ComplementDD]: Finished complementDD. Result 27 states. [2020-10-11 19:06:36,195 INFO L185 Difference]: Start difference. First operand has 415 places, 640 transitions, 13468 flow. Second operand 26 states and 2335 transitions. [2020-10-11 19:06:36,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 870 transitions, 19334 flow [2020-10-11 19:06:36,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 870 transitions, 18904 flow, removed 47 selfloop flow, removed 15 redundant places. [2020-10-11 19:06:36,813 INFO L241 Difference]: Finished difference. Result has 438 places, 756 transitions, 17019 flow [2020-10-11 19:06:36,813 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=13178, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=17019, PETRI_PLACES=438, PETRI_TRANSITIONS=756} [2020-10-11 19:06:36,813 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 297 predicate places. [2020-10-11 19:06:36,814 INFO L481 AbstractCegarLoop]: Abstraction has has 438 places, 756 transitions, 17019 flow [2020-10-11 19:06:36,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 19:06:36,814 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:06:36,814 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:06:36,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-11 19:06:36,814 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:06:36,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:06:36,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1137772449, now seen corresponding path program 14 times [2020-10-11 19:06:36,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:06:36,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556253871] [2020-10-11 19:06:36,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:06:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:06:37,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:06:37,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556253871] [2020-10-11 19:06:37,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:06:37,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-11 19:06:37,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695865131] [2020-10-11 19:06:37,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 19:06:37,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:06:37,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 19:06:37,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-11 19:06:40,802 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 154 [2020-10-11 19:06:40,804 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 756 transitions, 17019 flow. Second operand 11 states. [2020-10-11 19:06:40,804 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:06:40,804 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 154 [2020-10-11 19:06:40,804 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:06:44,174 INFO L129 PetriNetUnfolder]: 1305/10864 cut-off events. [2020-10-11 19:06:44,174 INFO L130 PetriNetUnfolder]: For 145608/150291 co-relation queries the response was YES. [2020-10-11 19:06:44,538 INFO L80 FinitePrefix]: Finished finitePrefix Result has 44557 conditions, 10864 events. 1305/10864 cut-off events. For 145608/150291 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 156581 event pairs, 185 based on Foata normal form. 395/11200 useless extension candidates. Maximal degree in co-relation 44416. Up to 1518 conditions per place. [2020-10-11 19:06:44,565 INFO L132 encePairwiseOnDemand]: 142/154 looper letters, 77 selfloop transitions, 66 changer transitions 0/764 dead transitions. [2020-10-11 19:06:44,565 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 764 transitions, 16671 flow [2020-10-11 19:06:44,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 19:06:44,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-11 19:06:44,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1700 transitions. [2020-10-11 19:06:44,567 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8491508491508492 [2020-10-11 19:06:44,567 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1700 transitions. [2020-10-11 19:06:44,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1700 transitions. [2020-10-11 19:06:44,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:06:44,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1700 transitions. [2020-10-11 19:06:44,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-11 19:06:44,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-11 19:06:44,572 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-11 19:06:44,572 INFO L185 Difference]: Start difference. First operand has 438 places, 756 transitions, 17019 flow. Second operand 13 states and 1700 transitions. [2020-10-11 19:06:44,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 764 transitions, 16671 flow [2020-10-11 19:06:45,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 764 transitions, 16336 flow, removed 159 selfloop flow, removed 5 redundant places. [2020-10-11 19:06:45,575 INFO L241 Difference]: Finished difference. Result has 448 places, 726 transitions, 15695 flow [2020-10-11 19:06:45,575 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=15138, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=657, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=15695, PETRI_PLACES=448, PETRI_TRANSITIONS=726} [2020-10-11 19:06:45,576 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 307 predicate places. [2020-10-11 19:06:45,576 INFO L481 AbstractCegarLoop]: Abstraction has has 448 places, 726 transitions, 15695 flow [2020-10-11 19:06:45,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 19:06:45,576 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:06:45,576 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:06:45,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-11 19:06:45,576 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:06:45,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:06:45,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1448442655, now seen corresponding path program 15 times [2020-10-11 19:06:45,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:06:45,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136787471] [2020-10-11 19:06:45,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:06:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:06:45,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:06:45,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136787471] [2020-10-11 19:06:45,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:06:45,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-11 19:06:45,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133506340] [2020-10-11 19:06:45,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 19:06:45,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:06:45,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 19:06:45,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-11 19:06:50,106 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 154 [2020-10-11 19:06:50,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 726 transitions, 15695 flow. Second operand 11 states. [2020-10-11 19:06:50,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:06:50,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 154 [2020-10-11 19:06:50,107 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:06:53,304 INFO L129 PetriNetUnfolder]: 1126/10095 cut-off events. [2020-10-11 19:06:53,304 INFO L130 PetriNetUnfolder]: For 150835/156371 co-relation queries the response was YES. [2020-10-11 19:06:53,415 INFO L80 FinitePrefix]: Finished finitePrefix Result has 44828 conditions, 10095 events. 1126/10095 cut-off events. For 150835/156371 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 142412 event pairs, 174 based on Foata normal form. 524/10529 useless extension candidates. Maximal degree in co-relation 44683. Up to 1331 conditions per place. [2020-10-11 19:06:53,435 INFO L132 encePairwiseOnDemand]: 142/154 looper letters, 85 selfloop transitions, 57 changer transitions 0/763 dead transitions. [2020-10-11 19:06:53,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 763 transitions, 16468 flow [2020-10-11 19:06:53,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 19:06:53,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-11 19:06:53,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1571 transitions. [2020-10-11 19:06:53,437 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8501082251082251 [2020-10-11 19:06:53,437 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1571 transitions. [2020-10-11 19:06:53,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1571 transitions. [2020-10-11 19:06:53,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:06:53,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1571 transitions. [2020-10-11 19:06:53,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 13 states. [2020-10-11 19:06:53,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 13 states. [2020-10-11 19:06:53,440 INFO L81 ComplementDD]: Finished complementDD. Result 13 states. [2020-10-11 19:06:53,440 INFO L185 Difference]: Start difference. First operand has 448 places, 726 transitions, 15695 flow. Second operand 12 states and 1571 transitions. [2020-10-11 19:06:53,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 763 transitions, 16468 flow [2020-10-11 19:06:54,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 763 transitions, 16428 flow, removed 4 selfloop flow, removed 6 redundant places. [2020-10-11 19:06:54,253 INFO L241 Difference]: Finished difference. Result has 457 places, 748 transitions, 16203 flow [2020-10-11 19:06:54,253 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=15657, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=679, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16203, PETRI_PLACES=457, PETRI_TRANSITIONS=748} [2020-10-11 19:06:54,254 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 316 predicate places. [2020-10-11 19:06:54,254 INFO L481 AbstractCegarLoop]: Abstraction has has 457 places, 748 transitions, 16203 flow [2020-10-11 19:06:54,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 19:06:54,254 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:06:54,254 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:06:54,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-11 19:06:54,254 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:06:54,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:06:54,255 INFO L82 PathProgramCache]: Analyzing trace with hash 2146673923, now seen corresponding path program 16 times [2020-10-11 19:06:54,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:06:54,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371397524] [2020-10-11 19:06:54,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:06:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:06:54,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:06:54,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371397524] [2020-10-11 19:06:54,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:06:54,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-11 19:06:54,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830728860] [2020-10-11 19:06:54,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 19:06:54,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:06:54,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 19:06:54,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-11 19:06:58,578 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 154 [2020-10-11 19:06:58,579 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 748 transitions, 16203 flow. Second operand 11 states. [2020-10-11 19:06:58,580 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:06:58,580 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 154 [2020-10-11 19:06:58,580 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:07:01,705 INFO L129 PetriNetUnfolder]: 1146/10224 cut-off events. [2020-10-11 19:07:01,706 INFO L130 PetriNetUnfolder]: For 155467/160813 co-relation queries the response was YES. [2020-10-11 19:07:01,919 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46812 conditions, 10224 events. 1146/10224 cut-off events. For 155467/160813 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 144704 event pairs, 169 based on Foata normal form. 583/10714 useless extension candidates. Maximal degree in co-relation 46663. Up to 1386 conditions per place. [2020-10-11 19:07:01,942 INFO L132 encePairwiseOnDemand]: 142/154 looper letters, 69 selfloop transitions, 83 changer transitions 0/769 dead transitions. [2020-10-11 19:07:01,942 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 769 transitions, 16701 flow [2020-10-11 19:07:01,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 19:07:01,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 19:07:01,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1438 transitions. [2020-10-11 19:07:01,945 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8488783943329398 [2020-10-11 19:07:01,945 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1438 transitions. [2020-10-11 19:07:01,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1438 transitions. [2020-10-11 19:07:01,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:07:01,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1438 transitions. [2020-10-11 19:07:01,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 19:07:01,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 19:07:01,948 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 19:07:01,948 INFO L185 Difference]: Start difference. First operand has 457 places, 748 transitions, 16203 flow. Second operand 11 states and 1438 transitions. [2020-10-11 19:07:01,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 769 transitions, 16701 flow [2020-10-11 19:07:02,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 769 transitions, 16594 flow, removed 34 selfloop flow, removed 7 redundant places. [2020-10-11 19:07:02,863 INFO L241 Difference]: Finished difference. Result has 463 places, 755 transitions, 16405 flow [2020-10-11 19:07:02,864 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=15952, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=662, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16405, PETRI_PLACES=463, PETRI_TRANSITIONS=755} [2020-10-11 19:07:02,864 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 322 predicate places. [2020-10-11 19:07:02,864 INFO L481 AbstractCegarLoop]: Abstraction has has 463 places, 755 transitions, 16405 flow [2020-10-11 19:07:02,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 19:07:02,864 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:07:02,865 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:07:02,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-11 19:07:02,865 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:07:02,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:07:02,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1931895183, now seen corresponding path program 17 times [2020-10-11 19:07:02,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:07:02,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101087030] [2020-10-11 19:07:02,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:07:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:07:03,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:07:03,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101087030] [2020-10-11 19:07:03,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:07:03,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-11 19:07:03,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470214501] [2020-10-11 19:07:03,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 19:07:03,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:07:03,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 19:07:03,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-10-11 19:07:19,674 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 154 [2020-10-11 19:07:19,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 755 transitions, 16405 flow. Second operand 18 states. [2020-10-11 19:07:19,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:07:19,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 154 [2020-10-11 19:07:19,676 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:07:20,430 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-10-11 19:07:20,752 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-11 19:07:21,146 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-11 19:07:21,332 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-10-11 19:07:21,500 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-10-11 19:07:24,335 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-10-11 19:07:24,519 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-11 19:07:24,697 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-10-11 19:07:24,877 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-11 19:07:25,029 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-10-11 19:07:25,185 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-11 19:07:25,453 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-10-11 19:07:25,626 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-11 19:07:26,024 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-11 19:07:26,185 INFO L129 PetriNetUnfolder]: 1330/10426 cut-off events. [2020-10-11 19:07:26,185 INFO L130 PetriNetUnfolder]: For 163997/165520 co-relation queries the response was YES. [2020-10-11 19:07:26,482 INFO L80 FinitePrefix]: Finished finitePrefix Result has 51536 conditions, 10426 events. 1330/10426 cut-off events. For 163997/165520 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 144870 event pairs, 186 based on Foata normal form. 698/11072 useless extension candidates. Maximal degree in co-relation 51386. Up to 1473 conditions per place. [2020-10-11 19:07:26,507 INFO L132 encePairwiseOnDemand]: 127/154 looper letters, 384 selfloop transitions, 371 changer transitions 0/883 dead transitions. [2020-10-11 19:07:26,508 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 883 transitions, 20140 flow [2020-10-11 19:07:26,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 19:07:26,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-11 19:07:26,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2423 transitions. [2020-10-11 19:07:26,511 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5827320827320828 [2020-10-11 19:07:26,512 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2423 transitions. [2020-10-11 19:07:26,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2423 transitions. [2020-10-11 19:07:26,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:07:26,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2423 transitions. [2020-10-11 19:07:26,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 28 states. [2020-10-11 19:07:26,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 28 states. [2020-10-11 19:07:26,518 INFO L81 ComplementDD]: Finished complementDD. Result 28 states. [2020-10-11 19:07:26,518 INFO L185 Difference]: Start difference. First operand has 463 places, 755 transitions, 16405 flow. Second operand 27 states and 2423 transitions. [2020-10-11 19:07:26,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 883 transitions, 20140 flow [2020-10-11 19:07:27,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 883 transitions, 20039 flow, removed 5 selfloop flow, removed 7 redundant places. [2020-10-11 19:07:27,586 INFO L241 Difference]: Finished difference. Result has 490 places, 788 transitions, 18251 flow [2020-10-11 19:07:27,587 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=16304, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=755, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=338, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=18251, PETRI_PLACES=490, PETRI_TRANSITIONS=788} [2020-10-11 19:07:27,587 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 349 predicate places. [2020-10-11 19:07:27,587 INFO L481 AbstractCegarLoop]: Abstraction has has 490 places, 788 transitions, 18251 flow [2020-10-11 19:07:27,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 19:07:27,587 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:07:27,588 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:07:27,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-11 19:07:27,588 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:07:27,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:07:27,588 INFO L82 PathProgramCache]: Analyzing trace with hash -774178413, now seen corresponding path program 18 times [2020-10-11 19:07:27,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:07:27,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285741347] [2020-10-11 19:07:27,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:07:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:07:28,356 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2020-10-11 19:07:28,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:07:28,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285741347] [2020-10-11 19:07:28,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:07:28,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-11 19:07:28,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008765794] [2020-10-11 19:07:28,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 19:07:28,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:07:28,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 19:07:28,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-10-11 19:07:50,773 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 154 [2020-10-11 19:07:50,774 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 788 transitions, 18251 flow. Second operand 19 states. [2020-10-11 19:07:50,774 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:07:50,774 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 154 [2020-10-11 19:07:50,774 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:07:51,616 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-10-11 19:07:52,143 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-10-11 19:07:52,289 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-10-11 19:07:52,562 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-11 19:07:55,307 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-10-11 19:07:55,524 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-10-11 19:07:55,707 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-10-11 19:07:56,104 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-10-11 19:07:56,393 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-10-11 19:07:56,585 INFO L129 PetriNetUnfolder]: 1356/10498 cut-off events. [2020-10-11 19:07:56,586 INFO L130 PetriNetUnfolder]: For 180449/182020 co-relation queries the response was YES. [2020-10-11 19:07:57,413 INFO L80 FinitePrefix]: Finished finitePrefix Result has 53293 conditions, 10498 events. 1356/10498 cut-off events. For 180449/182020 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 146050 event pairs, 159 based on Foata normal form. 766/11217 useless extension candidates. Maximal degree in co-relation 53136. Up to 1474 conditions per place. [2020-10-11 19:07:57,436 INFO L132 encePairwiseOnDemand]: 127/154 looper letters, 498 selfloop transitions, 384 changer transitions 0/971 dead transitions. [2020-10-11 19:07:57,436 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 971 transitions, 23696 flow [2020-10-11 19:07:57,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-11 19:07:57,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-11 19:07:57,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1978 transitions. [2020-10-11 19:07:57,440 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5838252656434475 [2020-10-11 19:07:57,440 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1978 transitions. [2020-10-11 19:07:57,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1978 transitions. [2020-10-11 19:07:57,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:07:57,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1978 transitions. [2020-10-11 19:07:57,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 23 states. [2020-10-11 19:07:57,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 23 states. [2020-10-11 19:07:57,444 INFO L81 ComplementDD]: Finished complementDD. Result 23 states. [2020-10-11 19:07:57,444 INFO L185 Difference]: Start difference. First operand has 490 places, 788 transitions, 18251 flow. Second operand 22 states and 1978 transitions. [2020-10-11 19:07:57,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 971 transitions, 23696 flow [2020-10-11 19:07:58,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 971 transitions, 23332 flow, removed 69 selfloop flow, removed 11 redundant places. [2020-10-11 19:07:58,596 INFO L241 Difference]: Finished difference. Result has 510 places, 840 transitions, 20714 flow [2020-10-11 19:07:58,597 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=17891, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=332, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=20714, PETRI_PLACES=510, PETRI_TRANSITIONS=840} [2020-10-11 19:07:58,598 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 369 predicate places. [2020-10-11 19:07:58,598 INFO L481 AbstractCegarLoop]: Abstraction has has 510 places, 840 transitions, 20714 flow [2020-10-11 19:07:58,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 19:07:58,598 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:07:58,598 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:07:58,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-11 19:07:58,598 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:07:58,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:07:58,599 INFO L82 PathProgramCache]: Analyzing trace with hash -514235939, now seen corresponding path program 19 times [2020-10-11 19:07:58,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:07:58,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913630275] [2020-10-11 19:07:58,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:07:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:07:59,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:07:59,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913630275] [2020-10-11 19:07:59,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:07:59,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-11 19:07:59,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151530834] [2020-10-11 19:07:59,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 19:07:59,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:07:59,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 19:07:59,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-10-11 19:08:19,844 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 154 [2020-10-11 19:08:19,845 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 840 transitions, 20714 flow. Second operand 18 states. [2020-10-11 19:08:19,845 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:08:19,845 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 154 [2020-10-11 19:08:19,845 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:08:20,822 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-10-11 19:08:21,022 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-10-11 19:08:21,255 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-10-11 19:08:21,422 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-10-11 19:08:26,075 INFO L129 PetriNetUnfolder]: 1330/10464 cut-off events. [2020-10-11 19:08:26,075 INFO L130 PetriNetUnfolder]: For 198776/200365 co-relation queries the response was YES. [2020-10-11 19:08:26,230 INFO L80 FinitePrefix]: Finished finitePrefix Result has 54481 conditions, 10464 events. 1330/10464 cut-off events. For 198776/200365 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 145492 event pairs, 195 based on Foata normal form. 545/10952 useless extension candidates. Maximal degree in co-relation 54314. Up to 1474 conditions per place. [2020-10-11 19:08:26,252 INFO L132 encePairwiseOnDemand]: 129/154 looper letters, 538 selfloop transitions, 325 changer transitions 0/991 dead transitions. [2020-10-11 19:08:26,253 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 991 transitions, 25467 flow [2020-10-11 19:08:26,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-11 19:08:26,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-11 19:08:26,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1988 transitions. [2020-10-11 19:08:26,259 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5867768595041323 [2020-10-11 19:08:26,259 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1988 transitions. [2020-10-11 19:08:26,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1988 transitions. [2020-10-11 19:08:26,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:08:26,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1988 transitions. [2020-10-11 19:08:26,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 23 states. [2020-10-11 19:08:26,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 23 states. [2020-10-11 19:08:26,264 INFO L81 ComplementDD]: Finished complementDD. Result 23 states. [2020-10-11 19:08:26,264 INFO L185 Difference]: Start difference. First operand has 510 places, 840 transitions, 20714 flow. Second operand 22 states and 1988 transitions. [2020-10-11 19:08:26,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 991 transitions, 25467 flow [2020-10-11 19:08:27,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 991 transitions, 25287 flow, removed 34 selfloop flow, removed 7 redundant places. [2020-10-11 19:08:27,490 INFO L241 Difference]: Finished difference. Result has 534 places, 888 transitions, 22991 flow [2020-10-11 19:08:27,491 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=20536, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=840, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=22991, PETRI_PLACES=534, PETRI_TRANSITIONS=888} [2020-10-11 19:08:27,491 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 393 predicate places. [2020-10-11 19:08:27,491 INFO L481 AbstractCegarLoop]: Abstraction has has 534 places, 888 transitions, 22991 flow [2020-10-11 19:08:27,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 19:08:27,492 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:08:27,492 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:08:27,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-11 19:08:27,492 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:08:27,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:08:27,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1018569153, now seen corresponding path program 20 times [2020-10-11 19:08:27,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:08:27,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114880377] [2020-10-11 19:08:27,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:08:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:08:28,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:08:28,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114880377] [2020-10-11 19:08:28,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:08:28,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-11 19:08:28,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667211732] [2020-10-11 19:08:28,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 19:08:28,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:08:28,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 19:08:28,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-10-11 19:08:49,759 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 154 [2020-10-11 19:08:49,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 888 transitions, 22991 flow. Second operand 18 states. [2020-10-11 19:08:49,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:08:49,760 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 154 [2020-10-11 19:08:49,761 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:08:50,770 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-10-11 19:08:50,991 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-10-11 19:08:51,362 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-10-11 19:08:55,530 INFO L129 PetriNetUnfolder]: 1315/10412 cut-off events. [2020-10-11 19:08:55,530 INFO L130 PetriNetUnfolder]: For 211461/212738 co-relation queries the response was YES. [2020-10-11 19:08:56,008 INFO L80 FinitePrefix]: Finished finitePrefix Result has 54889 conditions, 10412 events. 1315/10412 cut-off events. For 211461/212738 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 144712 event pairs, 274 based on Foata normal form. 504/10837 useless extension candidates. Maximal degree in co-relation 54712. Up to 1458 conditions per place. [2020-10-11 19:08:56,037 INFO L132 encePairwiseOnDemand]: 130/154 looper letters, 603 selfloop transitions, 346 changer transitions 0/1059 dead transitions. [2020-10-11 19:08:56,037 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 1059 transitions, 28331 flow [2020-10-11 19:08:56,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 19:08:56,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-11 19:08:56,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1893 transitions. [2020-10-11 19:08:56,039 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5853432282003711 [2020-10-11 19:08:56,040 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1893 transitions. [2020-10-11 19:08:56,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1893 transitions. [2020-10-11 19:08:56,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:08:56,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1893 transitions. [2020-10-11 19:08:56,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 22 states. [2020-10-11 19:08:56,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 22 states. [2020-10-11 19:08:56,043 INFO L81 ComplementDD]: Finished complementDD. Result 22 states. [2020-10-11 19:08:56,043 INFO L185 Difference]: Start difference. First operand has 534 places, 888 transitions, 22991 flow. Second operand 21 states and 1893 transitions. [2020-10-11 19:08:56,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 1059 transitions, 28331 flow [2020-10-11 19:08:59,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 1059 transitions, 27865 flow, removed 61 selfloop flow, removed 8 redundant places. [2020-10-11 19:08:59,987 INFO L241 Difference]: Finished difference. Result has 555 places, 937 transitions, 24923 flow [2020-10-11 19:08:59,988 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=22546, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=888, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=297, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=24923, PETRI_PLACES=555, PETRI_TRANSITIONS=937} [2020-10-11 19:08:59,988 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 414 predicate places. [2020-10-11 19:08:59,989 INFO L481 AbstractCegarLoop]: Abstraction has has 555 places, 937 transitions, 24923 flow [2020-10-11 19:08:59,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 19:08:59,989 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:08:59,989 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:08:59,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-11 19:08:59,989 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:08:59,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:08:59,989 INFO L82 PathProgramCache]: Analyzing trace with hash 156219199, now seen corresponding path program 21 times [2020-10-11 19:08:59,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:08:59,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644798776] [2020-10-11 19:08:59,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:09:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:09:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:09:00,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644798776] [2020-10-11 19:09:00,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:09:00,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-11 19:09:00,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90313035] [2020-10-11 19:09:00,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 19:09:00,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:09:00,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 19:09:00,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-10-11 19:09:19,325 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 154 [2020-10-11 19:09:19,326 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 937 transitions, 24923 flow. Second operand 18 states. [2020-10-11 19:09:19,326 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:09:19,326 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 154 [2020-10-11 19:09:19,327 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:09:20,310 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-11 19:09:20,482 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-11 19:09:20,655 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-11 19:09:21,186 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-10-11 19:09:21,457 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-10-11 19:09:21,721 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-10-11 19:09:25,516 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-11 19:09:25,884 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-10-11 19:09:26,211 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-11 19:09:26,710 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-11 19:09:27,158 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-11 19:09:27,362 INFO L129 PetriNetUnfolder]: 1554/12283 cut-off events. [2020-10-11 19:09:27,362 INFO L130 PetriNetUnfolder]: For 254977/256862 co-relation queries the response was YES. [2020-10-11 19:09:27,861 INFO L80 FinitePrefix]: Finished finitePrefix Result has 64374 conditions, 12283 events. 1554/12283 cut-off events. For 254977/256862 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 177226 event pairs, 183 based on Foata normal form. 1116/13335 useless extension candidates. Maximal degree in co-relation 64188. Up to 1743 conditions per place. [2020-10-11 19:09:27,892 INFO L132 encePairwiseOnDemand]: 127/154 looper letters, 465 selfloop transitions, 541 changer transitions 0/1136 dead transitions. [2020-10-11 19:09:27,892 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 1136 transitions, 31215 flow [2020-10-11 19:09:27,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-11 19:09:27,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-11 19:09:27,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2510 transitions. [2020-10-11 19:09:27,895 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5820964749536178 [2020-10-11 19:09:27,895 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2510 transitions. [2020-10-11 19:09:27,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2510 transitions. [2020-10-11 19:09:27,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:09:27,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2510 transitions. [2020-10-11 19:09:27,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 29 states. [2020-10-11 19:09:27,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 29 states. [2020-10-11 19:09:27,899 INFO L81 ComplementDD]: Finished complementDD. Result 29 states. [2020-10-11 19:09:27,899 INFO L185 Difference]: Start difference. First operand has 555 places, 937 transitions, 24923 flow. Second operand 28 states and 2510 transitions. [2020-10-11 19:09:27,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 1136 transitions, 31215 flow [2020-10-11 19:09:29,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 1136 transitions, 30931 flow, removed 92 selfloop flow, removed 7 redundant places. [2020-10-11 19:09:29,571 INFO L241 Difference]: Finished difference. Result has 589 places, 1047 transitions, 29532 flow [2020-10-11 19:09:29,572 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=24659, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=937, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=435, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=29532, PETRI_PLACES=589, PETRI_TRANSITIONS=1047} [2020-10-11 19:09:29,572 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 448 predicate places. [2020-10-11 19:09:29,572 INFO L481 AbstractCegarLoop]: Abstraction has has 589 places, 1047 transitions, 29532 flow [2020-10-11 19:09:29,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 19:09:29,572 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:09:29,573 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:09:29,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-11 19:09:29,573 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:09:29,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:09:29,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1698690911, now seen corresponding path program 22 times [2020-10-11 19:09:29,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:09:29,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410872329] [2020-10-11 19:09:29,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:09:29,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:09:29,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:09:29,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410872329] [2020-10-11 19:09:29,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:09:29,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-11 19:09:29,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024935567] [2020-10-11 19:09:29,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 19:09:29,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:09:29,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 19:09:29,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-11 19:09:34,637 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 154 [2020-10-11 19:09:34,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 1047 transitions, 29532 flow. Second operand 11 states. [2020-10-11 19:09:34,639 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:09:34,639 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 154 [2020-10-11 19:09:34,639 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:09:38,980 INFO L129 PetriNetUnfolder]: 1222/11644 cut-off events. [2020-10-11 19:09:38,980 INFO L130 PetriNetUnfolder]: For 309416/318668 co-relation queries the response was YES. [2020-10-11 19:09:39,554 INFO L80 FinitePrefix]: Finished finitePrefix Result has 63188 conditions, 11644 events. 1222/11644 cut-off events. For 309416/318668 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 169227 event pairs, 134 based on Foata normal form. 755/12337 useless extension candidates. Maximal degree in co-relation 62989. Up to 1535 conditions per place. [2020-10-11 19:09:39,584 INFO L132 encePairwiseOnDemand]: 142/154 looper letters, 147 selfloop transitions, 66 changer transitions 0/1077 dead transitions. [2020-10-11 19:09:39,585 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 1077 transitions, 30351 flow [2020-10-11 19:09:39,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 19:09:39,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-11 19:09:39,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1570 transitions. [2020-10-11 19:09:39,587 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8495670995670995 [2020-10-11 19:09:39,587 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1570 transitions. [2020-10-11 19:09:39,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1570 transitions. [2020-10-11 19:09:39,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:09:39,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1570 transitions. [2020-10-11 19:09:39,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 13 states. [2020-10-11 19:09:39,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 13 states. [2020-10-11 19:09:39,589 INFO L81 ComplementDD]: Finished complementDD. Result 13 states. [2020-10-11 19:09:39,589 INFO L185 Difference]: Start difference. First operand has 589 places, 1047 transitions, 29532 flow. Second operand 12 states and 1570 transitions. [2020-10-11 19:09:39,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 1077 transitions, 30351 flow [2020-10-11 19:09:42,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 1077 transitions, 29608 flow, removed 201 selfloop flow, removed 7 redundant places. [2020-10-11 19:09:42,435 INFO L241 Difference]: Finished difference. Result has 598 places, 1066 transitions, 29334 flow [2020-10-11 19:09:42,436 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=28794, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1047, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=987, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=29334, PETRI_PLACES=598, PETRI_TRANSITIONS=1066} [2020-10-11 19:09:42,436 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 457 predicate places. [2020-10-11 19:09:42,436 INFO L481 AbstractCegarLoop]: Abstraction has has 598 places, 1066 transitions, 29334 flow [2020-10-11 19:09:42,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 19:09:42,436 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:09:42,437 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:09:42,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-11 19:09:42,437 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:09:42,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:09:42,437 INFO L82 PathProgramCache]: Analyzing trace with hash 775160455, now seen corresponding path program 23 times [2020-10-11 19:09:42,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:09:42,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296385343] [2020-10-11 19:09:42,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:09:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:09:42,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:09:42,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296385343] [2020-10-11 19:09:42,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:09:42,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-11 19:09:42,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792746967] [2020-10-11 19:09:42,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 19:09:42,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:09:42,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 19:09:42,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-11 19:09:46,251 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 154 [2020-10-11 19:09:46,252 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 1066 transitions, 29334 flow. Second operand 11 states. [2020-10-11 19:09:46,252 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:09:46,252 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 154 [2020-10-11 19:09:46,252 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:09:50,784 INFO L129 PetriNetUnfolder]: 1271/11837 cut-off events. [2020-10-11 19:09:50,785 INFO L130 PetriNetUnfolder]: For 311426/321419 co-relation queries the response was YES. [2020-10-11 19:09:51,418 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65028 conditions, 11837 events. 1271/11837 cut-off events. For 311426/321419 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 172543 event pairs, 118 based on Foata normal form. 1183/12959 useless extension candidates. Maximal degree in co-relation 64824. Up to 1581 conditions per place. [2020-10-11 19:09:51,449 INFO L132 encePairwiseOnDemand]: 142/154 looper letters, 95 selfloop transitions, 142 changer transitions 0/1097 dead transitions. [2020-10-11 19:09:51,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 1097 transitions, 30252 flow [2020-10-11 19:09:51,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 19:09:51,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 19:09:51,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1437 transitions. [2020-10-11 19:09:51,451 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8482880755608029 [2020-10-11 19:09:51,451 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1437 transitions. [2020-10-11 19:09:51,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1437 transitions. [2020-10-11 19:09:51,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:09:51,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1437 transitions. [2020-10-11 19:09:51,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 19:09:51,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 19:09:51,453 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 19:09:51,454 INFO L185 Difference]: Start difference. First operand has 598 places, 1066 transitions, 29334 flow. Second operand 11 states and 1437 transitions. [2020-10-11 19:09:51,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 1097 transitions, 30252 flow [2020-10-11 19:09:54,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 1097 transitions, 30093 flow, removed 36 selfloop flow, removed 7 redundant places. [2020-10-11 19:09:54,445 INFO L241 Difference]: Finished difference. Result has 604 places, 1079 transitions, 29730 flow [2020-10-11 19:09:54,446 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=29018, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1062, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=922, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=29730, PETRI_PLACES=604, PETRI_TRANSITIONS=1079} [2020-10-11 19:09:54,446 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 463 predicate places. [2020-10-11 19:09:54,447 INFO L481 AbstractCegarLoop]: Abstraction has has 604 places, 1079 transitions, 29730 flow [2020-10-11 19:09:54,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 19:09:54,447 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:09:54,447 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:09:54,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-11 19:09:54,447 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:09:54,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:09:54,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1448180789, now seen corresponding path program 24 times [2020-10-11 19:09:54,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:09:54,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536076645] [2020-10-11 19:09:54,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:09:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:09:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:09:55,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536076645] [2020-10-11 19:09:55,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:09:55,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-11 19:09:55,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701175158] [2020-10-11 19:09:55,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 19:09:55,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:09:55,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 19:09:55,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2020-10-11 19:10:23,799 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 154 [2020-10-11 19:10:23,801 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 1079 transitions, 29730 flow. Second operand 18 states. [2020-10-11 19:10:23,801 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:10:23,801 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 154 [2020-10-11 19:10:23,801 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:10:24,706 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-11 19:10:25,053 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-11 19:10:25,662 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-11 19:10:25,953 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-10-11 19:10:26,121 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-11 19:10:30,484 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-11 19:10:30,683 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-11 19:10:30,928 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-10-11 19:10:31,310 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-11 19:10:31,691 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-10-11 19:10:31,917 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-11 19:10:32,470 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-11 19:10:32,771 INFO L129 PetriNetUnfolder]: 1586/12538 cut-off events. [2020-10-11 19:10:32,771 INFO L130 PetriNetUnfolder]: For 323959/326172 co-relation queries the response was YES. [2020-10-11 19:10:33,408 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73397 conditions, 12538 events. 1586/12538 cut-off events. For 323959/326172 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 180222 event pairs, 136 based on Foata normal form. 1387/13869 useless extension candidates. Maximal degree in co-relation 73190. Up to 1750 conditions per place. [2020-10-11 19:10:33,443 INFO L132 encePairwiseOnDemand]: 127/154 looper letters, 473 selfloop transitions, 580 changer transitions 0/1195 dead transitions. [2020-10-11 19:10:33,444 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 1195 transitions, 34122 flow [2020-10-11 19:10:33,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 19:10:33,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-11 19:10:33,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2598 transitions. [2020-10-11 19:10:33,447 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5817286162113748 [2020-10-11 19:10:33,448 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2598 transitions. [2020-10-11 19:10:33,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2598 transitions. [2020-10-11 19:10:33,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:10:33,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2598 transitions. [2020-10-11 19:10:33,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-11 19:10:33,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-11 19:10:33,454 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-11 19:10:33,454 INFO L185 Difference]: Start difference. First operand has 604 places, 1079 transitions, 29730 flow. Second operand 29 states and 2598 transitions. [2020-10-11 19:10:33,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 1195 transitions, 34122 flow [2020-10-11 19:10:36,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 626 places, 1195 transitions, 33954 flow, removed 14 selfloop flow, removed 6 redundant places. [2020-10-11 19:10:36,705 INFO L241 Difference]: Finished difference. Result has 634 places, 1112 transitions, 32249 flow [2020-10-11 19:10:36,706 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=29562, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1079, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=547, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=32249, PETRI_PLACES=634, PETRI_TRANSITIONS=1112} [2020-10-11 19:10:36,706 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 493 predicate places. [2020-10-11 19:10:36,706 INFO L481 AbstractCegarLoop]: Abstraction has has 634 places, 1112 transitions, 32249 flow [2020-10-11 19:10:36,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 19:10:36,707 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:10:36,707 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:10:36,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-11 19:10:36,707 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:10:36,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:10:36,708 INFO L82 PathProgramCache]: Analyzing trace with hash 424067, now seen corresponding path program 25 times [2020-10-11 19:10:36,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:10:36,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299401081] [2020-10-11 19:10:36,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:10:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:10:37,533 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2020-10-11 19:10:37,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:10:37,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299401081] [2020-10-11 19:10:37,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:10:37,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-11 19:10:37,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558746597] [2020-10-11 19:10:37,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 19:10:37,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:10:37,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 19:10:37,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-11 19:11:03,238 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 154 [2020-10-11 19:11:03,239 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 634 places, 1112 transitions, 32249 flow. Second operand 19 states. [2020-10-11 19:11:03,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:11:03,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 154 [2020-10-11 19:11:03,239 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:11:04,014 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-10-11 19:11:04,371 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2020-10-11 19:11:04,928 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-11 19:11:05,147 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-10-11 19:11:05,360 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-10-11 19:11:05,539 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-11 19:11:05,865 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-11 19:11:10,788 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-11 19:11:10,991 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-10-11 19:11:11,200 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-10-11 19:11:11,403 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-11 19:11:11,592 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-11 19:11:11,779 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-10-11 19:11:11,910 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-10-11 19:11:12,309 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-10-11 19:11:12,502 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-11 19:11:13,042 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-10-11 19:11:13,355 INFO L129 PetriNetUnfolder]: 1619/12596 cut-off events. [2020-10-11 19:11:13,355 INFO L130 PetriNetUnfolder]: For 357364/359629 co-relation queries the response was YES. [2020-10-11 19:11:13,970 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76371 conditions, 12596 events. 1619/12596 cut-off events. For 357364/359629 co-relation queries the response was YES. Maximal size of possible extension queue 884. Compared 181185 event pairs, 107 based on Foata normal form. 1441/13979 useless extension candidates. Maximal degree in co-relation 76157. Up to 1763 conditions per place. [2020-10-11 19:11:14,005 INFO L132 encePairwiseOnDemand]: 127/154 looper letters, 594 selfloop transitions, 585 changer transitions 0/1280 dead transitions. [2020-10-11 19:11:14,005 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 662 places, 1280 transitions, 37846 flow [2020-10-11 19:11:14,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 19:11:14,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-11 19:11:14,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2597 transitions. [2020-10-11 19:11:14,008 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5815047021943573 [2020-10-11 19:11:14,008 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2597 transitions. [2020-10-11 19:11:14,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2597 transitions. [2020-10-11 19:11:14,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:11:14,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2597 transitions. [2020-10-11 19:11:14,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-11 19:11:14,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-11 19:11:14,013 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-11 19:11:14,013 INFO L185 Difference]: Start difference. First operand has 634 places, 1112 transitions, 32249 flow. Second operand 29 states and 2597 transitions. [2020-10-11 19:11:14,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 662 places, 1280 transitions, 37846 flow [2020-10-11 19:11:16,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 1280 transitions, 37198 flow, removed 117 selfloop flow, removed 14 redundant places. [2020-10-11 19:11:16,746 INFO L241 Difference]: Finished difference. Result has 657 places, 1150 transitions, 34274 flow [2020-10-11 19:11:16,747 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=31602, PETRI_DIFFERENCE_MINUEND_PLACES=620, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=548, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=34274, PETRI_PLACES=657, PETRI_TRANSITIONS=1150} [2020-10-11 19:11:16,749 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 516 predicate places. [2020-10-11 19:11:16,750 INFO L481 AbstractCegarLoop]: Abstraction has has 657 places, 1150 transitions, 34274 flow [2020-10-11 19:11:16,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 19:11:16,750 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:11:16,750 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:11:16,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-11 19:11:16,751 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:11:16,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:11:16,751 INFO L82 PathProgramCache]: Analyzing trace with hash -790656097, now seen corresponding path program 26 times [2020-10-11 19:11:16,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:11:16,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554493438] [2020-10-11 19:11:16,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:11:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:11:17,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:11:17,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554493438] [2020-10-11 19:11:17,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:11:17,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-11 19:11:17,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332154084] [2020-10-11 19:11:17,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 19:11:17,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:11:17,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 19:11:17,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-10-11 19:11:45,872 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 154 [2020-10-11 19:11:45,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 1150 transitions, 34274 flow. Second operand 18 states. [2020-10-11 19:11:45,874 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:11:45,874 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 154 [2020-10-11 19:11:45,874 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:11:47,169 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-10-11 19:11:47,399 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-10-11 19:11:47,641 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-11 19:11:47,912 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-10-11 19:11:48,230 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-10-11 19:11:53,128 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-11 19:11:53,383 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-11 19:11:53,611 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-11 19:11:54,172 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-10-11 19:11:54,914 INFO L129 PetriNetUnfolder]: 1571/12586 cut-off events. [2020-10-11 19:11:54,914 INFO L130 PetriNetUnfolder]: For 376217/378517 co-relation queries the response was YES. [2020-10-11 19:11:55,255 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77049 conditions, 12586 events. 1571/12586 cut-off events. For 376217/378517 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 181638 event pairs, 114 based on Foata normal form. 1497/14034 useless extension candidates. Maximal degree in co-relation 76826. Up to 1746 conditions per place. [2020-10-11 19:11:55,285 INFO L132 encePairwiseOnDemand]: 127/154 looper letters, 535 selfloop transitions, 596 changer transitions 0/1273 dead transitions. [2020-10-11 19:11:55,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 679 places, 1273 transitions, 38905 flow [2020-10-11 19:11:55,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-11 19:11:55,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-11 19:11:55,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2079 transitions. [2020-10-11 19:11:55,290 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5869565217391305 [2020-10-11 19:11:55,290 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2079 transitions. [2020-10-11 19:11:55,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2079 transitions. [2020-10-11 19:11:55,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:11:55,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2079 transitions. [2020-10-11 19:11:55,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 24 states. [2020-10-11 19:11:55,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 24 states. [2020-10-11 19:11:55,293 INFO L81 ComplementDD]: Finished complementDD. Result 24 states. [2020-10-11 19:11:55,294 INFO L185 Difference]: Start difference. First operand has 657 places, 1150 transitions, 34274 flow. Second operand 23 states and 2079 transitions. [2020-10-11 19:11:55,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 679 places, 1273 transitions, 38905 flow [2020-10-11 19:11:58,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 1273 transitions, 38009 flow, removed 136 selfloop flow, removed 13 redundant places. [2020-10-11 19:11:58,033 INFO L241 Difference]: Finished difference. Result has 675 places, 1170 transitions, 35569 flow [2020-10-11 19:11:58,034 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=33391, PETRI_DIFFERENCE_MINUEND_PLACES=644, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=576, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=35569, PETRI_PLACES=675, PETRI_TRANSITIONS=1170} [2020-10-11 19:11:58,034 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 534 predicate places. [2020-10-11 19:11:58,034 INFO L481 AbstractCegarLoop]: Abstraction has has 675 places, 1170 transitions, 35569 flow [2020-10-11 19:11:58,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 19:11:58,035 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:11:58,035 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:11:58,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-11 19:11:58,035 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:11:58,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:11:58,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1402177377, now seen corresponding path program 27 times [2020-10-11 19:11:58,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:11:58,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157349185] [2020-10-11 19:11:58,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:11:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:11:58,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:11:58,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157349185] [2020-10-11 19:11:58,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:11:58,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-11 19:11:58,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381476526] [2020-10-11 19:11:58,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 19:11:58,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:11:58,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 19:11:58,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-10-11 19:12:27,858 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 154 [2020-10-11 19:12:27,859 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 1170 transitions, 35569 flow. Second operand 18 states. [2020-10-11 19:12:27,860 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:12:27,860 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 154 [2020-10-11 19:12:27,860 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:12:28,892 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-10-11 19:12:29,142 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-10-11 19:12:29,635 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2020-10-11 19:12:35,335 INFO L129 PetriNetUnfolder]: 1571/12570 cut-off events. [2020-10-11 19:12:35,335 INFO L130 PetriNetUnfolder]: For 390148/391925 co-relation queries the response was YES. [2020-10-11 19:12:36,027 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77655 conditions, 12570 events. 1571/12570 cut-off events. For 390148/391925 co-relation queries the response was YES. Maximal size of possible extension queue 905. Compared 181277 event pairs, 197 based on Foata normal form. 821/13314 useless extension candidates. Maximal degree in co-relation 77423. Up to 1737 conditions per place. [2020-10-11 19:12:36,062 INFO L132 encePairwiseOnDemand]: 130/154 looper letters, 763 selfloop transitions, 438 changer transitions 0/1334 dead transitions. [2020-10-11 19:12:36,062 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 695 places, 1334 transitions, 41573 flow [2020-10-11 19:12:36,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 19:12:36,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-11 19:12:36,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1893 transitions. [2020-10-11 19:12:36,065 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5853432282003711 [2020-10-11 19:12:36,065 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1893 transitions. [2020-10-11 19:12:36,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1893 transitions. [2020-10-11 19:12:36,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:12:36,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1893 transitions. [2020-10-11 19:12:36,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 22 states. [2020-10-11 19:12:36,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 22 states. [2020-10-11 19:12:36,069 INFO L81 ComplementDD]: Finished complementDD. Result 22 states. [2020-10-11 19:12:36,069 INFO L185 Difference]: Start difference. First operand has 675 places, 1170 transitions, 35569 flow. Second operand 21 states and 1893 transitions. [2020-10-11 19:12:36,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 695 places, 1334 transitions, 41573 flow [2020-10-11 19:12:39,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 1334 transitions, 41157 flow, removed 34 selfloop flow, removed 8 redundant places. [2020-10-11 19:12:39,169 INFO L241 Difference]: Finished difference. Result has 696 places, 1207 transitions, 37499 flow [2020-10-11 19:12:39,170 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=35171, PETRI_DIFFERENCE_MINUEND_PLACES=667, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=401, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=741, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=37499, PETRI_PLACES=696, PETRI_TRANSITIONS=1207} [2020-10-11 19:12:39,170 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 555 predicate places. [2020-10-11 19:12:39,170 INFO L481 AbstractCegarLoop]: Abstraction has has 696 places, 1207 transitions, 37499 flow [2020-10-11 19:12:39,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 19:12:39,170 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:12:39,171 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:12:39,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-11 19:12:39,171 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:12:39,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:12:39,171 INFO L82 PathProgramCache]: Analyzing trace with hash -396691475, now seen corresponding path program 28 times [2020-10-11 19:12:39,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:12:39,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136208304] [2020-10-11 19:12:39,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:12:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:12:40,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:12:40,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136208304] [2020-10-11 19:12:40,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:12:40,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-11 19:12:40,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814240268] [2020-10-11 19:12:40,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 19:12:40,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:12:40,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 19:12:40,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2020-10-11 19:13:05,705 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 154 [2020-10-11 19:13:05,706 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 696 places, 1207 transitions, 37499 flow. Second operand 18 states. [2020-10-11 19:13:05,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:13:05,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 154 [2020-10-11 19:13:05,706 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:13:06,550 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2020-10-11 19:13:06,747 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-10-11 19:13:07,065 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2020-10-11 19:13:07,565 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-10-11 19:13:07,895 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-10-11 19:13:13,109 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-10-11 19:13:13,422 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-10-11 19:13:13,707 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-10-11 19:13:14,207 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-10-11 19:13:14,682 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-10-11 19:13:14,989 INFO L129 PetriNetUnfolder]: 1580/12537 cut-off events. [2020-10-11 19:13:14,989 INFO L130 PetriNetUnfolder]: For 407406/409795 co-relation queries the response was YES. [2020-10-11 19:13:15,506 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78691 conditions, 12537 events. 1580/12537 cut-off events. For 407406/409795 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 180454 event pairs, 195 based on Foata normal form. 951/13416 useless extension candidates. Maximal degree in co-relation 78450. Up to 1746 conditions per place. [2020-10-11 19:13:15,538 INFO L132 encePairwiseOnDemand]: 128/154 looper letters, 734 selfloop transitions, 432 changer transitions 0/1310 dead transitions. [2020-10-11 19:13:15,538 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 715 places, 1310 transitions, 42089 flow [2020-10-11 19:13:15,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 19:13:15,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-11 19:13:15,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1803 transitions. [2020-10-11 19:13:15,542 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5853896103896103 [2020-10-11 19:13:15,542 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1803 transitions. [2020-10-11 19:13:15,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1803 transitions. [2020-10-11 19:13:15,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:13:15,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1803 transitions. [2020-10-11 19:13:15,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 21 states. [2020-10-11 19:13:15,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 21 states. [2020-10-11 19:13:15,547 INFO L81 ComplementDD]: Finished complementDD. Result 21 states. [2020-10-11 19:13:15,547 INFO L185 Difference]: Start difference. First operand has 696 places, 1207 transitions, 37499 flow. Second operand 20 states and 1803 transitions. [2020-10-11 19:13:15,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 715 places, 1310 transitions, 42089 flow [2020-10-11 19:13:18,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 707 places, 1310 transitions, 41614 flow, removed 117 selfloop flow, removed 8 redundant places. [2020-10-11 19:13:18,735 INFO L241 Difference]: Finished difference. Result has 715 places, 1234 transitions, 39362 flow [2020-10-11 19:13:18,736 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=37028, PETRI_DIFFERENCE_MINUEND_PLACES=688, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=405, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=779, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=39362, PETRI_PLACES=715, PETRI_TRANSITIONS=1234} [2020-10-11 19:13:18,737 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 574 predicate places. [2020-10-11 19:13:18,737 INFO L481 AbstractCegarLoop]: Abstraction has has 715 places, 1234 transitions, 39362 flow [2020-10-11 19:13:18,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 19:13:18,737 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:13:18,737 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:13:18,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-11 19:13:18,737 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:13:18,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:13:18,738 INFO L82 PathProgramCache]: Analyzing trace with hash -626548315, now seen corresponding path program 29 times [2020-10-11 19:13:18,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:13:18,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081261013] [2020-10-11 19:13:18,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:13:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:13:19,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:13:19,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081261013] [2020-10-11 19:13:19,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:13:19,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-11 19:13:19,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289636349] [2020-10-11 19:13:19,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 19:13:19,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:13:19,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 19:13:19,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-10-11 19:13:41,222 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 154 [2020-10-11 19:13:41,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 715 places, 1234 transitions, 39362 flow. Second operand 18 states. [2020-10-11 19:13:41,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:13:41,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 154 [2020-10-11 19:13:41,223 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:13:42,050 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2020-10-11 19:13:42,593 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-10-11 19:13:42,943 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-10-11 19:13:43,555 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-10-11 19:13:48,197 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-11 19:13:48,498 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-10-11 19:13:48,783 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-10-11 19:13:48,993 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-10-11 19:13:49,178 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-10-11 19:13:49,671 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-10-11 19:13:50,146 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-11 19:13:50,470 INFO L129 PetriNetUnfolder]: 1583/12564 cut-off events. [2020-10-11 19:13:50,470 INFO L130 PetriNetUnfolder]: For 427781/430187 co-relation queries the response was YES. [2020-10-11 19:13:51,226 INFO L80 FinitePrefix]: Finished finitePrefix Result has 79692 conditions, 12564 events. 1583/12564 cut-off events. For 427781/430187 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 180951 event pairs, 190 based on Foata normal form. 840/13331 useless extension candidates. Maximal degree in co-relation 79444. Up to 1746 conditions per place. [2020-10-11 19:13:51,261 INFO L132 encePairwiseOnDemand]: 130/154 looper letters, 767 selfloop transitions, 420 changer transitions 0/1331 dead transitions. [2020-10-11 19:13:51,262 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 735 places, 1331 transitions, 43626 flow [2020-10-11 19:13:51,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 19:13:51,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-11 19:13:51,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1892 transitions. [2020-10-11 19:13:51,265 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5850340136054422 [2020-10-11 19:13:51,265 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1892 transitions. [2020-10-11 19:13:51,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1892 transitions. [2020-10-11 19:13:51,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:13:51,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1892 transitions. [2020-10-11 19:13:51,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 22 states. [2020-10-11 19:13:51,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 22 states. [2020-10-11 19:13:51,269 INFO L81 ComplementDD]: Finished complementDD. Result 22 states. [2020-10-11 19:13:51,270 INFO L185 Difference]: Start difference. First operand has 715 places, 1234 transitions, 39362 flow. Second operand 21 states and 1892 transitions. [2020-10-11 19:13:51,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 735 places, 1331 transitions, 43626 flow [2020-10-11 19:13:54,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 727 places, 1331 transitions, 43088 flow, removed 155 selfloop flow, removed 8 redundant places. [2020-10-11 19:13:54,600 INFO L241 Difference]: Finished difference. Result has 734 places, 1253 transitions, 40308 flow [2020-10-11 19:13:54,601 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=38827, PETRI_DIFFERENCE_MINUEND_PLACES=707, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=401, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=814, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=40308, PETRI_PLACES=734, PETRI_TRANSITIONS=1253} [2020-10-11 19:13:54,601 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 593 predicate places. [2020-10-11 19:13:54,601 INFO L481 AbstractCegarLoop]: Abstraction has has 734 places, 1253 transitions, 40308 flow [2020-10-11 19:13:54,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 19:13:54,601 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:13:54,601 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:13:54,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-11 19:13:54,602 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:13:54,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:13:54,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1173451895, now seen corresponding path program 30 times [2020-10-11 19:13:54,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:13:54,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178753531] [2020-10-11 19:13:54,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:13:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:13:55,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:13:55,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178753531] [2020-10-11 19:13:55,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:13:55,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-11 19:13:55,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476298966] [2020-10-11 19:13:55,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 19:13:55,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:13:55,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 19:13:55,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-10-11 19:14:31,598 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 154 [2020-10-11 19:14:31,600 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 734 places, 1253 transitions, 40308 flow. Second operand 18 states. [2020-10-11 19:14:31,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:14:31,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 154 [2020-10-11 19:14:31,600 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:14:32,738 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-10-11 19:14:33,001 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-11 19:14:33,281 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-10-11 19:14:33,642 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-10-11 19:14:33,861 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-10-11 19:14:39,021 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-10-11 19:14:39,315 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-11 19:14:39,600 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-11 19:14:39,958 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-11 19:14:40,436 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-10-11 19:14:41,247 INFO L129 PetriNetUnfolder]: 1576/12557 cut-off events. [2020-10-11 19:14:41,247 INFO L130 PetriNetUnfolder]: For 437237/439031 co-relation queries the response was YES. [2020-10-11 19:14:41,779 INFO L80 FinitePrefix]: Finished finitePrefix Result has 79865 conditions, 12557 events. 1576/12557 cut-off events. For 437237/439031 co-relation queries the response was YES. Maximal size of possible extension queue 905. Compared 181010 event pairs, 199 based on Foata normal form. 834/13311 useless extension candidates. Maximal degree in co-relation 79609. Up to 1736 conditions per place. [2020-10-11 19:14:41,811 INFO L132 encePairwiseOnDemand]: 129/154 looper letters, 831 selfloop transitions, 425 changer transitions 0/1390 dead transitions. [2020-10-11 19:14:41,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 755 places, 1390 transitions, 45724 flow [2020-10-11 19:14:41,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-11 19:14:41,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-11 19:14:41,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1988 transitions. [2020-10-11 19:14:41,814 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5867768595041323 [2020-10-11 19:14:41,814 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1988 transitions. [2020-10-11 19:14:41,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1988 transitions. [2020-10-11 19:14:41,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:14:41,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1988 transitions. [2020-10-11 19:14:41,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 23 states. [2020-10-11 19:14:41,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 23 states. [2020-10-11 19:14:41,819 INFO L81 ComplementDD]: Finished complementDD. Result 23 states. [2020-10-11 19:14:41,819 INFO L185 Difference]: Start difference. First operand has 734 places, 1253 transitions, 40308 flow. Second operand 22 states and 1988 transitions. [2020-10-11 19:14:41,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 755 places, 1390 transitions, 45724 flow [2020-10-11 19:14:45,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 748 places, 1390 transitions, 45280 flow, removed 174 selfloop flow, removed 7 redundant places. [2020-10-11 19:14:45,137 INFO L241 Difference]: Finished difference. Result has 756 places, 1284 transitions, 41861 flow [2020-10-11 19:14:45,138 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=39864, PETRI_DIFFERENCE_MINUEND_PLACES=727, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=396, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=834, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=41861, PETRI_PLACES=756, PETRI_TRANSITIONS=1284} [2020-10-11 19:14:45,138 INFO L341 CegarLoopForPetriNet]: 141 programPoint places, 615 predicate places. [2020-10-11 19:14:45,139 INFO L481 AbstractCegarLoop]: Abstraction has has 756 places, 1284 transitions, 41861 flow [2020-10-11 19:14:45,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 19:14:45,139 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:14:45,139 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:14:45,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-11 19:14:45,139 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:14:45,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:14:45,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1332116675, now seen corresponding path program 31 times [2020-10-11 19:14:45,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:14:45,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754530409] [2020-10-11 19:14:45,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:14:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:14:46,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:14:46,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754530409] [2020-10-11 19:14:46,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:14:46,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-11 19:14:46,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524333457] [2020-10-11 19:14:46,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 19:14:46,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:14:46,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 19:14:46,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown