/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 21:12:02,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 21:12:02,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 21:12:02,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 21:12:02,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 21:12:02,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 21:12:02,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 21:12:02,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 21:12:02,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 21:12:02,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 21:12:02,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 21:12:02,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 21:12:02,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 21:12:02,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 21:12:02,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 21:12:02,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 21:12:02,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 21:12:02,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 21:12:02,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 21:12:02,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 21:12:02,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 21:12:02,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 21:12:02,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 21:12:02,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 21:12:02,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 21:12:02,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 21:12:02,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 21:12:02,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 21:12:02,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 21:12:02,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 21:12:02,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 21:12:02,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 21:12:02,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 21:12:02,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 21:12:02,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 21:12:02,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 21:12:02,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 21:12:02,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 21:12:02,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 21:12:02,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 21:12:02,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 21:12:02,737 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-06-10 21:12:02,766 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 21:12:02,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 21:12:02,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 21:12:02,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 21:12:02,768 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 21:12:02,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 21:12:02,768 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 21:12:02,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 21:12:02,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 21:12:02,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 21:12:02,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 21:12:02,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 21:12:02,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 21:12:02,769 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 21:12:02,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 21:12:02,769 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 21:12:02,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 21:12:02,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 21:12:02,770 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 21:12:02,770 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 21:12:02,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 21:12:02,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 21:12:02,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 21:12:02,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 21:12:02,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 21:12:02,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 21:12:02,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 21:12:02,771 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 21:12:02,771 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 21:12:03,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 21:12:03,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 21:12:03,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 21:12:03,060 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 21:12:03,062 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 21:12:03,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2021-06-10 21:12:03,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01f1adca1/a16f9f3c1dea4fc7b68022401449904f/FLAGc7e14bf7f [2021-06-10 21:12:03,568 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 21:12:03,569 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2021-06-10 21:12:03,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01f1adca1/a16f9f3c1dea4fc7b68022401449904f/FLAGc7e14bf7f [2021-06-10 21:12:03,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01f1adca1/a16f9f3c1dea4fc7b68022401449904f [2021-06-10 21:12:03,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 21:12:03,607 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 21:12:03,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 21:12:03,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 21:12:03,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 21:12:03,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:12:03" (1/1) ... [2021-06-10 21:12:03,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@775b843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:12:03, skipping insertion in model container [2021-06-10 21:12:03,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:12:03" (1/1) ... [2021-06-10 21:12:03,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 21:12:03,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 21:12:03,836 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i[950,963] [2021-06-10 21:12:03,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:12:03,976 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 21:12:03,985 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i[950,963] [2021-06-10 21:12:04,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:12:04,060 INFO L208 MainTranslator]: Completed translation [2021-06-10 21:12:04,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:12:04 WrapperNode [2021-06-10 21:12:04,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 21:12:04,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 21:12:04,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 21:12:04,063 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 21:12:04,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:12:04" (1/1) ... [2021-06-10 21:12:04,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:12:04" (1/1) ... [2021-06-10 21:12:04,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 21:12:04,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 21:12:04,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 21:12:04,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 21:12:04,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:12:04" (1/1) ... [2021-06-10 21:12:04,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:12:04" (1/1) ... [2021-06-10 21:12:04,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:12:04" (1/1) ... [2021-06-10 21:12:04,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:12:04" (1/1) ... [2021-06-10 21:12:04,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:12:04" (1/1) ... [2021-06-10 21:12:04,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:12:04" (1/1) ... [2021-06-10 21:12:04,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:12:04" (1/1) ... [2021-06-10 21:12:04,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 21:12:04,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 21:12:04,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 21:12:04,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 21:12:04,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:12:04" (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 [2021-06-10 21:12:04,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 21:12:04,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 21:12:04,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 21:12:04,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 21:12:04,176 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 21:12:04,176 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 21:12:04,177 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 21:12:04,177 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 21:12:04,177 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 21:12:04,177 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 21:12:04,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 21:12:04,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 21:12:04,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 21:12:04,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 21:12:04,179 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 21:12:04,521 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 21:12:04,522 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 21:12:04,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:12:04 BoogieIcfgContainer [2021-06-10 21:12:04,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 21:12:04,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 21:12:04,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 21:12:04,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 21:12:04,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 09:12:03" (1/3) ... [2021-06-10 21:12:04,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f42dfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:12:04, skipping insertion in model container [2021-06-10 21:12:04,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:12:04" (2/3) ... [2021-06-10 21:12:04,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f42dfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:12:04, skipping insertion in model container [2021-06-10 21:12:04,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:12:04" (3/3) ... [2021-06-10 21:12:04,532 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_tso.oepc.i [2021-06-10 21:12:04,537 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 21:12:04,540 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 21:12:04,541 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 21:12:04,571 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,571 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,571 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,571 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,571 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,572 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,572 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,572 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,572 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,572 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,572 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,572 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,573 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,573 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,573 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,573 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,574 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,574 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,574 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,574 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,574 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,574 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,574 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,574 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,575 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,575 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,575 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,575 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,576 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,577 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,577 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,577 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,577 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,577 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,578 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,578 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,579 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,580 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,580 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,580 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,585 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,586 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,586 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,586 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,589 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,589 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,589 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,589 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:12:04,590 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 21:12:04,604 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 21:12:04,625 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 21:12:04,625 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 21:12:04,625 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 21:12:04,625 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 21:12:04,625 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 21:12:04,625 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 21:12:04,625 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 21:12:04,625 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 21:12:04,634 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-06-10 21:12:04,658 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-06-10 21:12:04,658 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:12:04,660 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-06-10 21:12:04,661 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-06-10 21:12:04,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-06-10 21:12:04,664 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-10 21:12:04,674 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 58 transitions, 125 flow [2021-06-10 21:12:04,678 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 58 transitions, 125 flow [2021-06-10 21:12:04,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 58 transitions, 125 flow [2021-06-10 21:12:04,703 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-06-10 21:12:04,703 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:12:04,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 58 events. 1/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-06-10 21:12:04,706 INFO L151 LiptonReduction]: Number of co-enabled transitions 812 [2021-06-10 21:12:04,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:04,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:12:04,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:04,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:12:04,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:04,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:12:04,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:04,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:12:04,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:04,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:12:04,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:04,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:12:04,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:12:04,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:04,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:12:04,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:04,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:12:04,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:04,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:12:04,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:04,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:12:05,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:05,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:12:05,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:05,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:12:05,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:05,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:12:05,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:05,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:12:05,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:05,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:12:05,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:12:05,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:05,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:12:05,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:05,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:12:05,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:12:05,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:05,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:12:05,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:05,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:12:05,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:05,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 21:12:05,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:12:05,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:05,451 INFO L147 QuantifierPusher]: treesize reduction 22, result has 4.3 percent of original size 1 [2021-06-10 21:12:05,495 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-06-10 21:12:05,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:12:05,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:05,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:12:05,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:05,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:12:05,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:12:05,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:05,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:12:05,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:05,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:12:05,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:05,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:12:05,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:05,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:12:05,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:05,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:12:05,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:05,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:12:05,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:05,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:12:05,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:05,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:12:05,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:12:05,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:05,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:12:06,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:06,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:12:06,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:06,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:12:06,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:12:06,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:06,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:12:06,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:06,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:12:06,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:06,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:12:06,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 21:12:06,473 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-06-10 21:12:06,648 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-06-10 21:12:06,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:06,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:12:06,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:06,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:12:06,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:12:06,725 INFO L163 LiptonReduction]: Checked pairs total: 1296 [2021-06-10 21:12:06,725 INFO L165 LiptonReduction]: Total number of compositions: 45 [2021-06-10 21:12:06,727 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2064 [2021-06-10 21:12:06,736 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-06-10 21:12:06,736 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:12:06,736 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:12:06,737 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:12:06,737 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:12:06,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:12:06,742 INFO L82 PathProgramCache]: Analyzing trace with hash -93026454, now seen corresponding path program 1 times [2021-06-10 21:12:06,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:12:06,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762138648] [2021-06-10 21:12:06,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:12:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:12:06,879 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:12:06,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:12:06,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:12:06,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762138648] [2021-06-10 21:12:06,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:12:06,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:12:06,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559559836] [2021-06-10 21:12:06,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:12:06,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:12:06,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:12:06,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:12:06,907 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 118 [2021-06-10 21:12:06,909 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 41 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:06,909 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:12:06,909 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 118 [2021-06-10 21:12:06,910 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:12:06,932 INFO L129 PetriNetUnfolder]: 23/80 cut-off events. [2021-06-10 21:12:06,932 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:12:06,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 80 events. 23/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 318 event pairs, 11 based on Foata normal form. 3/78 useless extension candidates. Maximal degree in co-relation 133. Up to 44 conditions per place. [2021-06-10 21:12:06,933 INFO L132 encePairwiseOnDemand]: 112/118 looper letters, 4 selfloop transitions, 5 changer transitions 0/19 dead transitions. [2021-06-10 21:12:06,934 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 19 transitions, 65 flow [2021-06-10 21:12:06,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:12:06,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:12:06,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2021-06-10 21:12:06,942 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7824858757062146 [2021-06-10 21:12:06,943 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 277 transitions. [2021-06-10 21:12:06,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 277 transitions. [2021-06-10 21:12:06,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:12:06,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 277 transitions. [2021-06-10 21:12:06,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:06,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:06,952 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:06,953 INFO L185 Difference]: Start difference. First operand has 26 places, 16 transitions, 41 flow. Second operand 3 states and 277 transitions. [2021-06-10 21:12:06,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 19 transitions, 65 flow [2021-06-10 21:12:06,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 19 transitions, 62 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 21:12:06,956 INFO L241 Difference]: Finished difference. Result has 26 places, 19 transitions, 67 flow [2021-06-10 21:12:06,957 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2021-06-10 21:12:06,958 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2021-06-10 21:12:06,958 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 67 flow [2021-06-10 21:12:06,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:06,958 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:12:06,958 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:12:06,958 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 21:12:06,958 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:12:06,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:12:06,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1751671171, now seen corresponding path program 1 times [2021-06-10 21:12:06,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:12:06,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008597693] [2021-06-10 21:12:06,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:12:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:12:07,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:07,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:12:07,043 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:12:07,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:12:07,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:12:07,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008597693] [2021-06-10 21:12:07,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:12:07,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:12:07,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922209267] [2021-06-10 21:12:07,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:12:07,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:12:07,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:12:07,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:12:07,051 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 118 [2021-06-10 21:12:07,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:12:07,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 118 [2021-06-10 21:12:07,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:12:07,075 INFO L129 PetriNetUnfolder]: 15/61 cut-off events. [2021-06-10 21:12:07,075 INFO L130 PetriNetUnfolder]: For 14/43 co-relation queries the response was YES. [2021-06-10 21:12:07,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 61 events. 15/61 cut-off events. For 14/43 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 206 event pairs, 0 based on Foata normal form. 2/61 useless extension candidates. Maximal degree in co-relation 147. Up to 33 conditions per place. [2021-06-10 21:12:07,076 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 8 selfloop transitions, 7 changer transitions 0/25 dead transitions. [2021-06-10 21:12:07,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 124 flow [2021-06-10 21:12:07,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:12:07,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:12:07,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 369 transitions. [2021-06-10 21:12:07,081 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7817796610169492 [2021-06-10 21:12:07,082 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 369 transitions. [2021-06-10 21:12:07,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 369 transitions. [2021-06-10 21:12:07,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:12:07,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 369 transitions. [2021-06-10 21:12:07,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,084 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,084 INFO L185 Difference]: Start difference. First operand has 26 places, 19 transitions, 67 flow. Second operand 4 states and 369 transitions. [2021-06-10 21:12:07,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 25 transitions, 124 flow [2021-06-10 21:12:07,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 25 transitions, 116 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:12:07,086 INFO L241 Difference]: Finished difference. Result has 30 places, 23 transitions, 106 flow [2021-06-10 21:12:07,086 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2021-06-10 21:12:07,086 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2021-06-10 21:12:07,086 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 106 flow [2021-06-10 21:12:07,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,087 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:12:07,087 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:12:07,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 21:12:07,087 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:12:07,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:12:07,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1411146540, now seen corresponding path program 1 times [2021-06-10 21:12:07,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:12:07,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206706291] [2021-06-10 21:12:07,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:12:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:12:07,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:07,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:12:07,131 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:12:07,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:12:07,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:12:07,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206706291] [2021-06-10 21:12:07,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:12:07,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:12:07,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541839942] [2021-06-10 21:12:07,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:12:07,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:12:07,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:12:07,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:12:07,138 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 118 [2021-06-10 21:12:07,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:12:07,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 118 [2021-06-10 21:12:07,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:12:07,153 INFO L129 PetriNetUnfolder]: 10/50 cut-off events. [2021-06-10 21:12:07,153 INFO L130 PetriNetUnfolder]: For 38/81 co-relation queries the response was YES. [2021-06-10 21:12:07,153 INFO L84 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 50 events. 10/50 cut-off events. For 38/81 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 162 event pairs, 2 based on Foata normal form. 8/57 useless extension candidates. Maximal degree in co-relation 140. Up to 25 conditions per place. [2021-06-10 21:12:07,154 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 11 selfloop transitions, 7 changer transitions 0/28 dead transitions. [2021-06-10 21:12:07,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 28 transitions, 175 flow [2021-06-10 21:12:07,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:12:07,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:12:07,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 367 transitions. [2021-06-10 21:12:07,155 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.777542372881356 [2021-06-10 21:12:07,155 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 367 transitions. [2021-06-10 21:12:07,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 367 transitions. [2021-06-10 21:12:07,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:12:07,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 367 transitions. [2021-06-10 21:12:07,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,158 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,158 INFO L185 Difference]: Start difference. First operand has 30 places, 23 transitions, 106 flow. Second operand 4 states and 367 transitions. [2021-06-10 21:12:07,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 28 transitions, 175 flow [2021-06-10 21:12:07,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 175 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-10 21:12:07,159 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 164 flow [2021-06-10 21:12:07,160 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2021-06-10 21:12:07,160 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2021-06-10 21:12:07,160 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 164 flow [2021-06-10 21:12:07,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,160 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:12:07,160 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:12:07,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 21:12:07,160 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:12:07,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:12:07,161 INFO L82 PathProgramCache]: Analyzing trace with hash 795866215, now seen corresponding path program 1 times [2021-06-10 21:12:07,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:12:07,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100461209] [2021-06-10 21:12:07,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:12:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:12:07,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:07,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:12:07,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:07,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:12:07,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:12:07,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100461209] [2021-06-10 21:12:07,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:12:07,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:12:07,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173514507] [2021-06-10 21:12:07,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:12:07,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:12:07,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:12:07,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:12:07,191 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 118 [2021-06-10 21:12:07,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,192 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:12:07,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 118 [2021-06-10 21:12:07,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:12:07,209 INFO L129 PetriNetUnfolder]: 8/58 cut-off events. [2021-06-10 21:12:07,209 INFO L130 PetriNetUnfolder]: For 105/133 co-relation queries the response was YES. [2021-06-10 21:12:07,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 58 events. 8/58 cut-off events. For 105/133 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 232 event pairs, 2 based on Foata normal form. 5/61 useless extension candidates. Maximal degree in co-relation 178. Up to 26 conditions per place. [2021-06-10 21:12:07,210 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 5 selfloop transitions, 6 changer transitions 5/28 dead transitions. [2021-06-10 21:12:07,210 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 28 transitions, 215 flow [2021-06-10 21:12:07,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:12:07,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:12:07,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 379 transitions. [2021-06-10 21:12:07,211 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8029661016949152 [2021-06-10 21:12:07,211 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 379 transitions. [2021-06-10 21:12:07,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 379 transitions. [2021-06-10 21:12:07,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:12:07,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 379 transitions. [2021-06-10 21:12:07,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,213 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,213 INFO L185 Difference]: Start difference. First operand has 36 places, 26 transitions, 164 flow. Second operand 4 states and 379 transitions. [2021-06-10 21:12:07,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 28 transitions, 215 flow [2021-06-10 21:12:07,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 28 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:12:07,215 INFO L241 Difference]: Finished difference. Result has 39 places, 23 transitions, 147 flow [2021-06-10 21:12:07,216 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=39, PETRI_TRANSITIONS=23} [2021-06-10 21:12:07,216 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2021-06-10 21:12:07,216 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 23 transitions, 147 flow [2021-06-10 21:12:07,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,216 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:12:07,216 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:12:07,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 21:12:07,216 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:12:07,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:12:07,217 INFO L82 PathProgramCache]: Analyzing trace with hash 795925735, now seen corresponding path program 2 times [2021-06-10 21:12:07,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:12:07,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974509476] [2021-06-10 21:12:07,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:12:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:12:07,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:07,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:12:07,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:12:07,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974509476] [2021-06-10 21:12:07,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:12:07,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:12:07,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682903635] [2021-06-10 21:12:07,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:12:07,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:12:07,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:12:07,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:12:07,240 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 118 [2021-06-10 21:12:07,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 23 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:12:07,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 118 [2021-06-10 21:12:07,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:12:07,247 INFO L129 PetriNetUnfolder]: 5/41 cut-off events. [2021-06-10 21:12:07,248 INFO L130 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2021-06-10 21:12:07,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 41 events. 5/41 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 127 event pairs, 1 based on Foata normal form. 1/42 useless extension candidates. Maximal degree in co-relation 125. Up to 17 conditions per place. [2021-06-10 21:12:07,248 INFO L132 encePairwiseOnDemand]: 115/118 looper letters, 1 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2021-06-10 21:12:07,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 23 transitions, 155 flow [2021-06-10 21:12:07,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:12:07,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:12:07,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2021-06-10 21:12:07,250 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8418079096045198 [2021-06-10 21:12:07,250 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2021-06-10 21:12:07,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2021-06-10 21:12:07,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:12:07,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2021-06-10 21:12:07,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,251 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,251 INFO L185 Difference]: Start difference. First operand has 39 places, 23 transitions, 147 flow. Second operand 3 states and 298 transitions. [2021-06-10 21:12:07,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 23 transitions, 155 flow [2021-06-10 21:12:07,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 23 transitions, 128 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-06-10 21:12:07,253 INFO L241 Difference]: Finished difference. Result has 36 places, 23 transitions, 131 flow [2021-06-10 21:12:07,253 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=36, PETRI_TRANSITIONS=23} [2021-06-10 21:12:07,254 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2021-06-10 21:12:07,254 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 23 transitions, 131 flow [2021-06-10 21:12:07,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,254 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:12:07,254 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:12:07,254 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 21:12:07,254 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:12:07,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:12:07,255 INFO L82 PathProgramCache]: Analyzing trace with hash -2069156605, now seen corresponding path program 1 times [2021-06-10 21:12:07,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:12:07,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606798137] [2021-06-10 21:12:07,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:12:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:12:07,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:07,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:12:07,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:07,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:12:07,279 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:12:07,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:12:07,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:12:07,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606798137] [2021-06-10 21:12:07,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:12:07,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:12:07,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906864865] [2021-06-10 21:12:07,286 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 21:12:07,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:12:07,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 21:12:07,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-10 21:12:07,287 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 118 [2021-06-10 21:12:07,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 23 transitions, 131 flow. Second operand has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,288 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:12:07,288 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 118 [2021-06-10 21:12:07,288 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:12:07,303 INFO L129 PetriNetUnfolder]: 6/46 cut-off events. [2021-06-10 21:12:07,304 INFO L130 PetriNetUnfolder]: For 75/77 co-relation queries the response was YES. [2021-06-10 21:12:07,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 46 events. 6/46 cut-off events. For 75/77 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 139 event pairs, 0 based on Foata normal form. 6/52 useless extension candidates. Maximal degree in co-relation 144. Up to 16 conditions per place. [2021-06-10 21:12:07,304 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 3 selfloop transitions, 4 changer transitions 11/27 dead transitions. [2021-06-10 21:12:07,304 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 27 transitions, 198 flow [2021-06-10 21:12:07,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 21:12:07,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 21:12:07,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2021-06-10 21:12:07,305 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7508474576271187 [2021-06-10 21:12:07,306 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2021-06-10 21:12:07,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2021-06-10 21:12:07,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:12:07,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2021-06-10 21:12:07,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,308 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,308 INFO L185 Difference]: Start difference. First operand has 36 places, 23 transitions, 131 flow. Second operand 5 states and 443 transitions. [2021-06-10 21:12:07,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 27 transitions, 198 flow [2021-06-10 21:12:07,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 27 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 21:12:07,309 INFO L241 Difference]: Finished difference. Result has 40 places, 16 transitions, 91 flow [2021-06-10 21:12:07,309 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=91, PETRI_PLACES=40, PETRI_TRANSITIONS=16} [2021-06-10 21:12:07,310 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2021-06-10 21:12:07,310 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 16 transitions, 91 flow [2021-06-10 21:12:07,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,310 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:12:07,310 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:12:07,310 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 21:12:07,310 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:12:07,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:12:07,311 INFO L82 PathProgramCache]: Analyzing trace with hash 325880681, now seen corresponding path program 1 times [2021-06-10 21:12:07,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:12:07,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157523653] [2021-06-10 21:12:07,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:12:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:12:07,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:07,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:12:07,336 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-06-10 21:12:07,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-10 21:12:07,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:12:07,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157523653] [2021-06-10 21:12:07,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:12:07,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:12:07,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439770156] [2021-06-10 21:12:07,347 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:12:07,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:12:07,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:12:07,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:12:07,348 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 118 [2021-06-10 21:12:07,349 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 16 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:12:07,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 118 [2021-06-10 21:12:07,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:12:07,385 INFO L129 PetriNetUnfolder]: 23/64 cut-off events. [2021-06-10 21:12:07,385 INFO L130 PetriNetUnfolder]: For 141/154 co-relation queries the response was YES. [2021-06-10 21:12:07,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 64 events. 23/64 cut-off events. For 141/154 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 190 event pairs, 5 based on Foata normal form. 4/58 useless extension candidates. Maximal degree in co-relation 163. Up to 27 conditions per place. [2021-06-10 21:12:07,386 INFO L132 encePairwiseOnDemand]: 112/118 looper letters, 6 selfloop transitions, 4 changer transitions 3/23 dead transitions. [2021-06-10 21:12:07,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 23 transitions, 131 flow [2021-06-10 21:12:07,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:12:07,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:12:07,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2021-06-10 21:12:07,389 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7860169491525424 [2021-06-10 21:12:07,389 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2021-06-10 21:12:07,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2021-06-10 21:12:07,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:12:07,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2021-06-10 21:12:07,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,391 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,391 INFO L185 Difference]: Start difference. First operand has 40 places, 16 transitions, 91 flow. Second operand 4 states and 371 transitions. [2021-06-10 21:12:07,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 23 transitions, 131 flow [2021-06-10 21:12:07,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 23 transitions, 90 flow, removed 6 selfloop flow, removed 12 redundant places. [2021-06-10 21:12:07,393 INFO L241 Difference]: Finished difference. Result has 33 places, 18 transitions, 78 flow [2021-06-10 21:12:07,393 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=33, PETRI_TRANSITIONS=18} [2021-06-10 21:12:07,393 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2021-06-10 21:12:07,393 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 18 transitions, 78 flow [2021-06-10 21:12:07,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,394 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:12:07,394 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:12:07,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 21:12:07,394 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:12:07,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:12:07,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1121022911, now seen corresponding path program 1 times [2021-06-10 21:12:07,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:12:07,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678773597] [2021-06-10 21:12:07,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:12:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:12:07,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:07,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:12:07,442 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-06-10 21:12:07,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-10 21:12:07,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:07,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:12:07,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:12:07,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678773597] [2021-06-10 21:12:07,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:12:07,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:12:07,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232403910] [2021-06-10 21:12:07,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 21:12:07,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:12:07,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 21:12:07,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-10 21:12:07,451 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 118 [2021-06-10 21:12:07,451 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 18 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,451 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:12:07,451 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 118 [2021-06-10 21:12:07,451 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:12:07,482 INFO L129 PetriNetUnfolder]: 9/39 cut-off events. [2021-06-10 21:12:07,482 INFO L130 PetriNetUnfolder]: For 48/66 co-relation queries the response was YES. [2021-06-10 21:12:07,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 39 events. 9/39 cut-off events. For 48/66 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 82 event pairs, 0 based on Foata normal form. 7/43 useless extension candidates. Maximal degree in co-relation 115. Up to 22 conditions per place. [2021-06-10 21:12:07,482 INFO L132 encePairwiseOnDemand]: 112/118 looper letters, 2 selfloop transitions, 6 changer transitions 7/25 dead transitions. [2021-06-10 21:12:07,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 25 transitions, 137 flow [2021-06-10 21:12:07,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 21:12:07,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 21:12:07,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 462 transitions. [2021-06-10 21:12:07,484 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7830508474576271 [2021-06-10 21:12:07,484 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 462 transitions. [2021-06-10 21:12:07,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 462 transitions. [2021-06-10 21:12:07,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:12:07,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 462 transitions. [2021-06-10 21:12:07,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,486 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,486 INFO L185 Difference]: Start difference. First operand has 33 places, 18 transitions, 78 flow. Second operand 5 states and 462 transitions. [2021-06-10 21:12:07,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 25 transitions, 137 flow [2021-06-10 21:12:07,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 25 transitions, 125 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-06-10 21:12:07,487 INFO L241 Difference]: Finished difference. Result has 36 places, 18 transitions, 94 flow [2021-06-10 21:12:07,487 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=94, PETRI_PLACES=36, PETRI_TRANSITIONS=18} [2021-06-10 21:12:07,487 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2021-06-10 21:12:07,487 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 18 transitions, 94 flow [2021-06-10 21:12:07,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,487 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:12:07,487 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:12:07,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 21:12:07,488 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:12:07,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:12:07,488 INFO L82 PathProgramCache]: Analyzing trace with hash -391952436, now seen corresponding path program 1 times [2021-06-10 21:12:07,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:12:07,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585168513] [2021-06-10 21:12:07,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:12:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:12:07,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:07,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:12:07,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:07,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:12:07,522 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-06-10 21:12:07,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-10 21:12:07,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:12:07,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:12:07,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:12:07,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585168513] [2021-06-10 21:12:07,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:12:07,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 21:12:07,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120897732] [2021-06-10 21:12:07,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 21:12:07,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:12:07,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 21:12:07,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-06-10 21:12:07,532 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 118 [2021-06-10 21:12:07,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 18 transitions, 94 flow. Second operand has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,532 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:12:07,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 118 [2021-06-10 21:12:07,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:12:07,574 INFO L129 PetriNetUnfolder]: 1/19 cut-off events. [2021-06-10 21:12:07,574 INFO L130 PetriNetUnfolder]: For 34/50 co-relation queries the response was YES. [2021-06-10 21:12:07,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 19 events. 1/19 cut-off events. For 34/50 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 5/24 useless extension candidates. Maximal degree in co-relation 54. Up to 7 conditions per place. [2021-06-10 21:12:07,576 INFO L132 encePairwiseOnDemand]: 112/118 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2021-06-10 21:12:07,576 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 18 transitions, 103 flow [2021-06-10 21:12:07,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-10 21:12:07,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-06-10 21:12:07,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 543 transitions. [2021-06-10 21:12:07,578 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7669491525423728 [2021-06-10 21:12:07,578 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 543 transitions. [2021-06-10 21:12:07,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 543 transitions. [2021-06-10 21:12:07,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:12:07,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 543 transitions. [2021-06-10 21:12:07,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.5) internal successors, (543), 6 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,580 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,580 INFO L185 Difference]: Start difference. First operand has 36 places, 18 transitions, 94 flow. Second operand 6 states and 543 transitions. [2021-06-10 21:12:07,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 18 transitions, 103 flow [2021-06-10 21:12:07,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 18 transitions, 80 flow, removed 2 selfloop flow, removed 6 redundant places. [2021-06-10 21:12:07,581 INFO L241 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2021-06-10 21:12:07,581 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2021-06-10 21:12:07,581 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2021-06-10 21:12:07,581 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2021-06-10 21:12:07,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:12:07,581 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-10 21:12:07,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 09:12:07 BasicIcfg [2021-06-10 21:12:07,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 21:12:07,587 INFO L168 Benchmark]: Toolchain (without parser) took 3978.26 ms. Allocated memory was 331.4 MB in the beginning and 398.5 MB in the end (delta: 67.1 MB). Free memory was 293.9 MB in the beginning and 371.9 MB in the end (delta: -78.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:12:07,590 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 331.4 MB. Free memory is still 312.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:12:07,594 INFO L168 Benchmark]: CACSL2BoogieTranslator took 452.81 ms. Allocated memory is still 331.4 MB. Free memory was 293.7 MB in the beginning and 293.3 MB in the end (delta: 409.9 kB). Peak memory consumption was 7.6 MB. Max. memory is 16.0 GB. [2021-06-10 21:12:07,594 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.44 ms. Allocated memory is still 331.4 MB. Free memory was 293.3 MB in the beginning and 291.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:12:07,595 INFO L168 Benchmark]: Boogie Preprocessor took 21.43 ms. Allocated memory is still 331.4 MB. Free memory was 291.2 MB in the beginning and 289.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:12:07,595 INFO L168 Benchmark]: RCFGBuilder took 398.86 ms. Allocated memory is still 331.4 MB. Free memory was 289.1 MB in the beginning and 266.0 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:12:07,595 INFO L168 Benchmark]: TraceAbstraction took 3056.88 ms. Allocated memory was 331.4 MB in the beginning and 398.5 MB in the end (delta: 67.1 MB). Free memory was 265.0 MB in the beginning and 371.9 MB in the end (delta: -106.9 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:12:07,599 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 331.4 MB. Free memory is still 312.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 452.81 ms. Allocated memory is still 331.4 MB. Free memory was 293.7 MB in the beginning and 293.3 MB in the end (delta: 409.9 kB). Peak memory consumption was 7.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 41.44 ms. Allocated memory is still 331.4 MB. Free memory was 293.3 MB in the beginning and 291.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 21.43 ms. Allocated memory is still 331.4 MB. Free memory was 291.2 MB in the beginning and 289.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 398.86 ms. Allocated memory is still 331.4 MB. Free memory was 289.1 MB in the beginning and 266.0 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3056.88 ms. Allocated memory was 331.4 MB in the beginning and 398.5 MB in the end (delta: 67.1 MB). Free memory was 265.0 MB in the beginning and 371.9 MB in the end (delta: -106.9 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2047.3ms, 67 PlacesBefore, 26 PlacesAfterwards, 58 TransitionsBefore, 16 TransitionsAfterwards, 812 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 45 TotalNumberOfCompositions, 1296 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 742, positive: 680, positive conditional: 0, positive unconditional: 680, negative: 62, negative conditional: 0, negative unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 526, positive: 498, positive conditional: 0, positive unconditional: 498, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 526, positive: 498, positive conditional: 0, positive unconditional: 498, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 526, positive: 493, positive conditional: 0, positive unconditional: 493, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 33, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 102, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 82, negative conditional: 0, negative unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 742, positive: 182, positive conditional: 0, positive unconditional: 182, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 526, unknown conditional: 0, unknown unconditional: 526] , Statistics on independence cache: Total cache size (in pairs): 888, Positive cache size: 860, Positive conditional cache size: 0, Positive unconditional cache size: 860, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2960.1ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 307.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2108.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 40 SDtfs, 22 SDslu, 20 SDs, 0 SdLazy, 86 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 99.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=3, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.5ms SsaConstructionTime, 100.7ms SatisfiabilityAnalysisTime, 301.7ms InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 463 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...