/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-NoLbe-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-sre-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 07:19:11,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 07:19:11,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 07:19:11,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 07:19:11,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 07:19:11,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 07:19:11,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 07:19:11,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 07:19:11,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 07:19:11,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 07:19:11,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 07:19:11,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 07:19:11,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 07:19:11,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 07:19:11,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 07:19:11,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 07:19:11,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 07:19:11,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 07:19:11,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 07:19:11,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 07:19:11,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 07:19:11,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 07:19:11,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 07:19:11,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 07:19:11,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 07:19:11,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 07:19:11,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 07:19:11,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 07:19:11,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 07:19:11,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 07:19:11,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 07:19:11,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 07:19:11,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 07:19:11,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 07:19:11,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 07:19:11,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 07:19:11,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 07:19:11,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 07:19:11,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 07:19:11,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 07:19:11,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 07:19:11,194 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-NoLbe-Before.epf [2022-01-19 07:19:11,241 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 07:19:11,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 07:19:11,242 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 07:19:11,242 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 07:19:11,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 07:19:11,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 07:19:11,243 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 07:19:11,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 07:19:11,243 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 07:19:11,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 07:19:11,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 07:19:11,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 07:19:11,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 07:19:11,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 07:19:11,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 07:19:11,244 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 07:19:11,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 07:19:11,245 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 07:19:11,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 07:19:11,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 07:19:11,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 07:19:11,245 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 07:19:11,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 07:19:11,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 07:19:11,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 07:19:11,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 07:19:11,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 07:19:11,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 07:19:11,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 07:19:11,248 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 07:19:11,248 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 07:19:11,248 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 07:19:11,248 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 07:19:11,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 07:19:11,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 07:19:11,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 07:19:11,496 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 07:19:11,498 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 07:19:11,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-sre-symm.wvr.c [2022-01-19 07:19:11,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/824d3661d/131aaeb21ad94df183006181090ea8ef/FLAG509d673f7 [2022-01-19 07:19:11,947 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 07:19:11,948 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-symm.wvr.c [2022-01-19 07:19:11,963 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/824d3661d/131aaeb21ad94df183006181090ea8ef/FLAG509d673f7 [2022-01-19 07:19:12,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/824d3661d/131aaeb21ad94df183006181090ea8ef [2022-01-19 07:19:12,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 07:19:12,372 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 07:19:12,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 07:19:12,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 07:19:12,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 07:19:12,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 07:19:12" (1/1) ... [2022-01-19 07:19:12,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f2d8e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:19:12, skipping insertion in model container [2022-01-19 07:19:12,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 07:19:12" (1/1) ... [2022-01-19 07:19:12,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 07:19:12,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 07:19:12,538 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-symm.wvr.c[2133,2146] [2022-01-19 07:19:12,541 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 07:19:12,546 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 07:19:12,559 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-symm.wvr.c[2133,2146] [2022-01-19 07:19:12,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 07:19:12,570 INFO L208 MainTranslator]: Completed translation [2022-01-19 07:19:12,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:19:12 WrapperNode [2022-01-19 07:19:12,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 07:19:12,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 07:19:12,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 07:19:12,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 07:19:12,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:19:12" (1/1) ... [2022-01-19 07:19:12,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:19:12" (1/1) ... [2022-01-19 07:19:12,604 INFO L137 Inliner]: procedures = 21, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2022-01-19 07:19:12,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 07:19:12,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 07:19:12,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 07:19:12,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 07:19:12,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:19:12" (1/1) ... [2022-01-19 07:19:12,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:19:12" (1/1) ... [2022-01-19 07:19:12,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:19:12" (1/1) ... [2022-01-19 07:19:12,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:19:12" (1/1) ... [2022-01-19 07:19:12,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:19:12" (1/1) ... [2022-01-19 07:19:12,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:19:12" (1/1) ... [2022-01-19 07:19:12,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:19:12" (1/1) ... [2022-01-19 07:19:12,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 07:19:12,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 07:19:12,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 07:19:12,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 07:19:12,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:19:12" (1/1) ... [2022-01-19 07:19:12,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 07:19:12,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:19:12,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-19 07:19:12,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-19 07:19:12,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 07:19:12,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 07:19:12,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 07:19:12,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 07:19:12,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 07:19:12,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 07:19:12,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 07:19:12,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 07:19:12,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 07:19:12,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 07:19:12,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 07:19:12,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 07:19:12,691 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 07:19:12,749 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 07:19:12,750 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 07:19:12,886 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 07:19:12,893 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 07:19:12,893 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 07:19:12,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 07:19:12 BoogieIcfgContainer [2022-01-19 07:19:12,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 07:19:12,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 07:19:12,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 07:19:12,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 07:19:12,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 07:19:12" (1/3) ... [2022-01-19 07:19:12,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5532dc56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 07:19:12, skipping insertion in model container [2022-01-19 07:19:12,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:19:12" (2/3) ... [2022-01-19 07:19:12,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5532dc56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 07:19:12, skipping insertion in model container [2022-01-19 07:19:12,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 07:19:12" (3/3) ... [2022-01-19 07:19:12,905 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-sre-symm.wvr.c [2022-01-19 07:19:12,908 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 07:19:12,908 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 07:19:12,908 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 07:19:12,972 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,973 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,973 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,974 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,974 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,974 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,974 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,974 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,975 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,975 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,975 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,975 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,975 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,976 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,976 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,976 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,976 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,976 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,979 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,979 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,981 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,981 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,981 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,982 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,982 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,982 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,982 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,982 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,983 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,983 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,983 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,983 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,983 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,983 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,983 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,983 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,984 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,984 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,984 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,984 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,986 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,986 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,987 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,987 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,998 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,998 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,999 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:12,999 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:19:13,002 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 07:19:13,035 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 07:19:13,041 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 07:19:13,041 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 07:19:13,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 220 flow [2022-01-19 07:19:13,100 INFO L129 PetriNetUnfolder]: 7/100 cut-off events. [2022-01-19 07:19:13,100 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 07:19:13,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 100 events. 7/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-01-19 07:19:13,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 102 transitions, 220 flow [2022-01-19 07:19:13,108 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 91 transitions, 194 flow [2022-01-19 07:19:13,130 INFO L129 PetriNetUnfolder]: 7/90 cut-off events. [2022-01-19 07:19:13,130 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 07:19:13,131 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:13,131 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:13,132 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:13,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:13,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1122200234, now seen corresponding path program 1 times [2022-01-19 07:19:13,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:13,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369565486] [2022-01-19 07:19:13,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:13,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:13,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:13,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:13,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369565486] [2022-01-19 07:19:13,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369565486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:13,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:13,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 07:19:13,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792718650] [2022-01-19 07:19:13,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:13,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 07:19:13,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:13,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 07:19:13,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 07:19:13,498 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 102 [2022-01-19 07:19:13,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 194 flow. Second operand has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 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) [2022-01-19 07:19:13,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:13,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 102 [2022-01-19 07:19:13,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:13,822 INFO L129 PetriNetUnfolder]: 55/294 cut-off events. [2022-01-19 07:19:13,822 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-01-19 07:19:13,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 294 events. 55/294 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1134 event pairs, 11 based on Foata normal form. 9/287 useless extension candidates. Maximal degree in co-relation 265. Up to 44 conditions per place. [2022-01-19 07:19:13,829 INFO L132 encePairwiseOnDemand]: 86/102 looper letters, 52 selfloop transitions, 10 changer transitions 34/155 dead transitions. [2022-01-19 07:19:13,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 155 transitions, 541 flow [2022-01-19 07:19:13,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-19 07:19:13,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-19 07:19:13,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1141 transitions. [2022-01-19 07:19:13,859 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7457516339869281 [2022-01-19 07:19:13,860 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1141 transitions. [2022-01-19 07:19:13,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1141 transitions. [2022-01-19 07:19:13,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:13,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1141 transitions. [2022-01-19 07:19:13,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 76.06666666666666) internal successors, (1141), 15 states have internal predecessors, (1141), 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) [2022-01-19 07:19:13,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 102.0) internal successors, (1632), 16 states have internal predecessors, (1632), 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) [2022-01-19 07:19:13,890 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 102.0) internal successors, (1632), 16 states have internal predecessors, (1632), 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) [2022-01-19 07:19:13,892 INFO L186 Difference]: Start difference. First operand has 91 places, 91 transitions, 194 flow. Second operand 15 states and 1141 transitions. [2022-01-19 07:19:13,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 155 transitions, 541 flow [2022-01-19 07:19:13,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 155 transitions, 515 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 07:19:13,902 INFO L242 Difference]: Finished difference. Result has 111 places, 93 transitions, 253 flow [2022-01-19 07:19:13,904 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=253, PETRI_PLACES=111, PETRI_TRANSITIONS=93} [2022-01-19 07:19:13,908 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 20 predicate places. [2022-01-19 07:19:13,908 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 93 transitions, 253 flow [2022-01-19 07:19:13,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 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) [2022-01-19 07:19:13,909 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:13,909 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:13,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 07:19:13,910 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:13,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:13,910 INFO L85 PathProgramCache]: Analyzing trace with hash 697994717, now seen corresponding path program 1 times [2022-01-19 07:19:13,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:13,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204610644] [2022-01-19 07:19:13,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:13,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:14,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:14,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:14,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204610644] [2022-01-19 07:19:14,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204610644] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:14,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:14,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 07:19:14,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357471067] [2022-01-19 07:19:14,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:14,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 07:19:14,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:14,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 07:19:14,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 07:19:14,047 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-01-19 07:19:14,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 93 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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) [2022-01-19 07:19:14,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:14,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-01-19 07:19:14,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:14,115 INFO L129 PetriNetUnfolder]: 41/290 cut-off events. [2022-01-19 07:19:14,116 INFO L130 PetriNetUnfolder]: For 107/112 co-relation queries the response was YES. [2022-01-19 07:19:14,119 INFO L84 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 290 events. 41/290 cut-off events. For 107/112 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1157 event pairs, 13 based on Foata normal form. 2/262 useless extension candidates. Maximal degree in co-relation 482. Up to 52 conditions per place. [2022-01-19 07:19:14,120 INFO L132 encePairwiseOnDemand]: 98/102 looper letters, 18 selfloop transitions, 2 changer transitions 1/98 dead transitions. [2022-01-19 07:19:14,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 98 transitions, 308 flow [2022-01-19 07:19:14,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 07:19:14,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 07:19:14,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2022-01-19 07:19:14,122 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8790849673202614 [2022-01-19 07:19:14,122 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2022-01-19 07:19:14,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2022-01-19 07:19:14,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:14,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2022-01-19 07:19:14,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2022-01-19 07:19:14,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 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) [2022-01-19 07:19:14,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 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) [2022-01-19 07:19:14,124 INFO L186 Difference]: Start difference. First operand has 111 places, 93 transitions, 253 flow. Second operand 3 states and 269 transitions. [2022-01-19 07:19:14,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 98 transitions, 308 flow [2022-01-19 07:19:14,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 98 transitions, 297 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-01-19 07:19:14,132 INFO L242 Difference]: Finished difference. Result has 100 places, 95 transitions, 262 flow [2022-01-19 07:19:14,132 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=100, PETRI_TRANSITIONS=95} [2022-01-19 07:19:14,133 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 9 predicate places. [2022-01-19 07:19:14,133 INFO L470 AbstractCegarLoop]: Abstraction has has 100 places, 95 transitions, 262 flow [2022-01-19 07:19:14,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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) [2022-01-19 07:19:14,133 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:14,134 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:14,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 07:19:14,134 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:14,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:14,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1049557055, now seen corresponding path program 2 times [2022-01-19 07:19:14,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:14,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862147566] [2022-01-19 07:19:14,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:14,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:14,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:14,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862147566] [2022-01-19 07:19:14,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862147566] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:14,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:14,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 07:19:14,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150057329] [2022-01-19 07:19:14,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:14,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 07:19:14,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:14,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 07:19:14,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 07:19:14,254 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-01-19 07:19:14,255 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 95 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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) [2022-01-19 07:19:14,255 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:14,255 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-01-19 07:19:14,255 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:14,312 INFO L129 PetriNetUnfolder]: 28/218 cut-off events. [2022-01-19 07:19:14,313 INFO L130 PetriNetUnfolder]: For 59/60 co-relation queries the response was YES. [2022-01-19 07:19:14,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 218 events. 28/218 cut-off events. For 59/60 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 701 event pairs, 16 based on Foata normal form. 3/202 useless extension candidates. Maximal degree in co-relation 313. Up to 46 conditions per place. [2022-01-19 07:19:14,314 INFO L132 encePairwiseOnDemand]: 98/102 looper letters, 16 selfloop transitions, 0 changer transitions 13/96 dead transitions. [2022-01-19 07:19:14,314 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 96 transitions, 307 flow [2022-01-19 07:19:14,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 07:19:14,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 07:19:14,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2022-01-19 07:19:14,316 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8790849673202614 [2022-01-19 07:19:14,316 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2022-01-19 07:19:14,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2022-01-19 07:19:14,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:14,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2022-01-19 07:19:14,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2022-01-19 07:19:14,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 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) [2022-01-19 07:19:14,318 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 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) [2022-01-19 07:19:14,318 INFO L186 Difference]: Start difference. First operand has 100 places, 95 transitions, 262 flow. Second operand 3 states and 269 transitions. [2022-01-19 07:19:14,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 96 transitions, 307 flow [2022-01-19 07:19:14,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 96 transitions, 300 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 07:19:14,327 INFO L242 Difference]: Finished difference. Result has 101 places, 83 transitions, 202 flow [2022-01-19 07:19:14,327 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=101, PETRI_TRANSITIONS=83} [2022-01-19 07:19:14,329 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 10 predicate places. [2022-01-19 07:19:14,329 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 83 transitions, 202 flow [2022-01-19 07:19:14,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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) [2022-01-19 07:19:14,329 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:14,330 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:14,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 07:19:14,330 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:14,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:14,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1224331634, now seen corresponding path program 1 times [2022-01-19 07:19:14,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:14,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765553020] [2022-01-19 07:19:14,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:14,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:14,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:14,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:14,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765553020] [2022-01-19 07:19:14,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765553020] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:14,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:14,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:14,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952668587] [2022-01-19 07:19:14,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:14,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:14,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:14,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:14,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:14,490 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:14,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 83 transitions, 202 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:14,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:14,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:14,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:14,891 INFO L129 PetriNetUnfolder]: 96/360 cut-off events. [2022-01-19 07:19:14,892 INFO L130 PetriNetUnfolder]: For 149/150 co-relation queries the response was YES. [2022-01-19 07:19:14,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 360 events. 96/360 cut-off events. For 149/150 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1563 event pairs, 35 based on Foata normal form. 1/353 useless extension candidates. Maximal degree in co-relation 744. Up to 112 conditions per place. [2022-01-19 07:19:14,895 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 75 selfloop transitions, 5 changer transitions 34/167 dead transitions. [2022-01-19 07:19:14,895 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 167 transitions, 697 flow [2022-01-19 07:19:14,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 07:19:14,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 07:19:14,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1627 transitions. [2022-01-19 07:19:14,900 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6646241830065359 [2022-01-19 07:19:14,900 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1627 transitions. [2022-01-19 07:19:14,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1627 transitions. [2022-01-19 07:19:14,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:14,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1627 transitions. [2022-01-19 07:19:14,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 67.79166666666667) internal successors, (1627), 24 states have internal predecessors, (1627), 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) [2022-01-19 07:19:14,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 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) [2022-01-19 07:19:14,911 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 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) [2022-01-19 07:19:14,911 INFO L186 Difference]: Start difference. First operand has 101 places, 83 transitions, 202 flow. Second operand 24 states and 1627 transitions. [2022-01-19 07:19:14,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 167 transitions, 697 flow [2022-01-19 07:19:14,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 167 transitions, 643 flow, removed 22 selfloop flow, removed 6 redundant places. [2022-01-19 07:19:14,917 INFO L242 Difference]: Finished difference. Result has 133 places, 87 transitions, 283 flow [2022-01-19 07:19:14,917 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=283, PETRI_PLACES=133, PETRI_TRANSITIONS=87} [2022-01-19 07:19:14,918 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 42 predicate places. [2022-01-19 07:19:14,918 INFO L470 AbstractCegarLoop]: Abstraction has has 133 places, 87 transitions, 283 flow [2022-01-19 07:19:14,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:14,920 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:14,920 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:14,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 07:19:14,921 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:14,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:14,921 INFO L85 PathProgramCache]: Analyzing trace with hash -608647506, now seen corresponding path program 2 times [2022-01-19 07:19:14,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:14,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246143760] [2022-01-19 07:19:14,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:14,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:15,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:15,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:15,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246143760] [2022-01-19 07:19:15,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246143760] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:15,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:15,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:15,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804225637] [2022-01-19 07:19:15,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:15,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:15,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:15,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:15,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:15,065 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:15,066 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 87 transitions, 283 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:15,066 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:15,066 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:15,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:15,504 INFO L129 PetriNetUnfolder]: 136/542 cut-off events. [2022-01-19 07:19:15,504 INFO L130 PetriNetUnfolder]: For 1421/1421 co-relation queries the response was YES. [2022-01-19 07:19:15,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1802 conditions, 542 events. 136/542 cut-off events. For 1421/1421 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2929 event pairs, 70 based on Foata normal form. 1/530 useless extension candidates. Maximal degree in co-relation 1773. Up to 193 conditions per place. [2022-01-19 07:19:15,510 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 98 selfloop transitions, 5 changer transitions 32/188 dead transitions. [2022-01-19 07:19:15,510 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 188 transitions, 1218 flow [2022-01-19 07:19:15,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 07:19:15,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 07:19:15,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1624 transitions. [2022-01-19 07:19:15,515 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6633986928104575 [2022-01-19 07:19:15,515 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1624 transitions. [2022-01-19 07:19:15,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1624 transitions. [2022-01-19 07:19:15,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:15,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1624 transitions. [2022-01-19 07:19:15,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 67.66666666666667) internal successors, (1624), 24 states have internal predecessors, (1624), 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) [2022-01-19 07:19:15,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 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) [2022-01-19 07:19:15,526 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 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) [2022-01-19 07:19:15,526 INFO L186 Difference]: Start difference. First operand has 133 places, 87 transitions, 283 flow. Second operand 24 states and 1624 transitions. [2022-01-19 07:19:15,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 188 transitions, 1218 flow [2022-01-19 07:19:15,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 188 transitions, 1110 flow, removed 51 selfloop flow, removed 11 redundant places. [2022-01-19 07:19:15,538 INFO L242 Difference]: Finished difference. Result has 150 places, 91 transitions, 369 flow [2022-01-19 07:19:15,538 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=369, PETRI_PLACES=150, PETRI_TRANSITIONS=91} [2022-01-19 07:19:15,541 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 59 predicate places. [2022-01-19 07:19:15,542 INFO L470 AbstractCegarLoop]: Abstraction has has 150 places, 91 transitions, 369 flow [2022-01-19 07:19:15,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:15,542 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:15,542 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:15,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 07:19:15,543 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:15,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:15,544 INFO L85 PathProgramCache]: Analyzing trace with hash 64807340, now seen corresponding path program 1 times [2022-01-19 07:19:15,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:15,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638671373] [2022-01-19 07:19:15,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:15,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:15,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:15,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638671373] [2022-01-19 07:19:15,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638671373] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:15,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:15,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:19:15,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342236523] [2022-01-19 07:19:15,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:15,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:19:15,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:15,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:19:15,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:19:15,636 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-01-19 07:19:15,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 91 transitions, 369 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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) [2022-01-19 07:19:15,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:15,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-01-19 07:19:15,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:15,715 INFO L129 PetriNetUnfolder]: 50/382 cut-off events. [2022-01-19 07:19:15,715 INFO L130 PetriNetUnfolder]: For 1729/1779 co-relation queries the response was YES. [2022-01-19 07:19:15,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1209 conditions, 382 events. 50/382 cut-off events. For 1729/1779 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1821 event pairs, 37 based on Foata normal form. 12/368 useless extension candidates. Maximal degree in co-relation 1168. Up to 43 conditions per place. [2022-01-19 07:19:15,719 INFO L132 encePairwiseOnDemand]: 94/102 looper letters, 18 selfloop transitions, 7 changer transitions 0/100 dead transitions. [2022-01-19 07:19:15,719 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 100 transitions, 445 flow [2022-01-19 07:19:15,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 07:19:15,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 07:19:15,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 354 transitions. [2022-01-19 07:19:15,721 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8676470588235294 [2022-01-19 07:19:15,721 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 354 transitions. [2022-01-19 07:19:15,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 354 transitions. [2022-01-19 07:19:15,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:15,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 354 transitions. [2022-01-19 07:19:15,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 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) [2022-01-19 07:19:15,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 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) [2022-01-19 07:19:15,724 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 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) [2022-01-19 07:19:15,724 INFO L186 Difference]: Start difference. First operand has 150 places, 91 transitions, 369 flow. Second operand 4 states and 354 transitions. [2022-01-19 07:19:15,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 100 transitions, 445 flow [2022-01-19 07:19:15,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 100 transitions, 418 flow, removed 13 selfloop flow, removed 12 redundant places. [2022-01-19 07:19:15,735 INFO L242 Difference]: Finished difference. Result has 126 places, 93 transitions, 376 flow [2022-01-19 07:19:15,735 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=376, PETRI_PLACES=126, PETRI_TRANSITIONS=93} [2022-01-19 07:19:15,737 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 35 predicate places. [2022-01-19 07:19:15,737 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 93 transitions, 376 flow [2022-01-19 07:19:15,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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) [2022-01-19 07:19:15,738 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:15,738 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:15,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 07:19:15,738 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:15,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:15,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1076099432, now seen corresponding path program 3 times [2022-01-19 07:19:15,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:15,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625441126] [2022-01-19 07:19:15,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:15,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:15,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:15,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:15,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625441126] [2022-01-19 07:19:15,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625441126] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:15,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:15,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:15,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73265689] [2022-01-19 07:19:15,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:15,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:15,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:15,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:15,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:15,876 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:15,877 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 93 transitions, 376 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:15,877 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:15,877 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:15,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:16,191 INFO L129 PetriNetUnfolder]: 148/593 cut-off events. [2022-01-19 07:19:16,191 INFO L130 PetriNetUnfolder]: For 2118/2119 co-relation queries the response was YES. [2022-01-19 07:19:16,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2269 conditions, 593 events. 148/593 cut-off events. For 2118/2119 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3316 event pairs, 92 based on Foata normal form. 1/581 useless extension candidates. Maximal degree in co-relation 2237. Up to 270 conditions per place. [2022-01-19 07:19:16,196 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 58 selfloop transitions, 12 changer transitions 25/150 dead transitions. [2022-01-19 07:19:16,196 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 150 transitions, 1101 flow [2022-01-19 07:19:16,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 07:19:16,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 07:19:16,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1348 transitions. [2022-01-19 07:19:16,200 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6607843137254902 [2022-01-19 07:19:16,200 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1348 transitions. [2022-01-19 07:19:16,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1348 transitions. [2022-01-19 07:19:16,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:16,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1348 transitions. [2022-01-19 07:19:16,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 67.4) internal successors, (1348), 20 states have internal predecessors, (1348), 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) [2022-01-19 07:19:16,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 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) [2022-01-19 07:19:16,208 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 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) [2022-01-19 07:19:16,208 INFO L186 Difference]: Start difference. First operand has 126 places, 93 transitions, 376 flow. Second operand 20 states and 1348 transitions. [2022-01-19 07:19:16,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 150 transitions, 1101 flow [2022-01-19 07:19:16,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 150 transitions, 1095 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 07:19:16,219 INFO L242 Difference]: Finished difference. Result has 160 places, 103 transitions, 559 flow [2022-01-19 07:19:16,220 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=559, PETRI_PLACES=160, PETRI_TRANSITIONS=103} [2022-01-19 07:19:16,220 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 69 predicate places. [2022-01-19 07:19:16,220 INFO L470 AbstractCegarLoop]: Abstraction has has 160 places, 103 transitions, 559 flow [2022-01-19 07:19:16,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:16,221 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:16,221 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:16,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 07:19:16,221 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:16,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:16,222 INFO L85 PathProgramCache]: Analyzing trace with hash 247999428, now seen corresponding path program 1 times [2022-01-19 07:19:16,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:16,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830644825] [2022-01-19 07:19:16,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:16,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:16,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:16,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:16,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830644825] [2022-01-19 07:19:16,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830644825] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:16,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:16,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:19:16,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215186731] [2022-01-19 07:19:16,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:16,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:19:16,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:16,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:19:16,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:19:16,272 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-01-19 07:19:16,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 103 transitions, 559 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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) [2022-01-19 07:19:16,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:16,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-01-19 07:19:16,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:16,346 INFO L129 PetriNetUnfolder]: 61/441 cut-off events. [2022-01-19 07:19:16,346 INFO L130 PetriNetUnfolder]: For 2390/2422 co-relation queries the response was YES. [2022-01-19 07:19:16,349 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1626 conditions, 441 events. 61/441 cut-off events. For 2390/2422 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2352 event pairs, 46 based on Foata normal form. 13/435 useless extension candidates. Maximal degree in co-relation 1577. Up to 53 conditions per place. [2022-01-19 07:19:16,350 INFO L132 encePairwiseOnDemand]: 97/102 looper letters, 23 selfloop transitions, 4 changer transitions 0/112 dead transitions. [2022-01-19 07:19:16,351 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 112 transitions, 644 flow [2022-01-19 07:19:16,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 07:19:16,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 07:19:16,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 354 transitions. [2022-01-19 07:19:16,352 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8676470588235294 [2022-01-19 07:19:16,352 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 354 transitions. [2022-01-19 07:19:16,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 354 transitions. [2022-01-19 07:19:16,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:16,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 354 transitions. [2022-01-19 07:19:16,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 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) [2022-01-19 07:19:16,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 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) [2022-01-19 07:19:16,355 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 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) [2022-01-19 07:19:16,355 INFO L186 Difference]: Start difference. First operand has 160 places, 103 transitions, 559 flow. Second operand 4 states and 354 transitions. [2022-01-19 07:19:16,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 112 transitions, 644 flow [2022-01-19 07:19:16,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 112 transitions, 579 flow, removed 29 selfloop flow, removed 10 redundant places. [2022-01-19 07:19:16,369 INFO L242 Difference]: Finished difference. Result has 143 places, 105 transitions, 520 flow [2022-01-19 07:19:16,370 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=520, PETRI_PLACES=143, PETRI_TRANSITIONS=105} [2022-01-19 07:19:16,371 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 52 predicate places. [2022-01-19 07:19:16,372 INFO L470 AbstractCegarLoop]: Abstraction has has 143 places, 105 transitions, 520 flow [2022-01-19 07:19:16,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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) [2022-01-19 07:19:16,372 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:16,372 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:16,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 07:19:16,372 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:16,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:16,373 INFO L85 PathProgramCache]: Analyzing trace with hash -4862106, now seen corresponding path program 2 times [2022-01-19 07:19:16,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:16,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560407295] [2022-01-19 07:19:16,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:16,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:16,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:16,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:16,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560407295] [2022-01-19 07:19:16,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560407295] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:16,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:16,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:19:16,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356910079] [2022-01-19 07:19:16,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:16,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:19:16,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:16,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:19:16,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:19:16,441 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-01-19 07:19:16,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 105 transitions, 520 flow. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 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) [2022-01-19 07:19:16,442 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:16,442 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-01-19 07:19:16,442 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:16,517 INFO L129 PetriNetUnfolder]: 48/375 cut-off events. [2022-01-19 07:19:16,517 INFO L130 PetriNetUnfolder]: For 1504/1531 co-relation queries the response was YES. [2022-01-19 07:19:16,519 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1246 conditions, 375 events. 48/375 cut-off events. For 1504/1531 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1830 event pairs, 32 based on Foata normal form. 12/370 useless extension candidates. Maximal degree in co-relation 1204. Up to 43 conditions per place. [2022-01-19 07:19:16,521 INFO L132 encePairwiseOnDemand]: 97/102 looper letters, 23 selfloop transitions, 6 changer transitions 0/114 dead transitions. [2022-01-19 07:19:16,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 114 transitions, 608 flow [2022-01-19 07:19:16,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:19:16,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:19:16,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 438 transitions. [2022-01-19 07:19:16,524 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8588235294117647 [2022-01-19 07:19:16,524 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 438 transitions. [2022-01-19 07:19:16,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 438 transitions. [2022-01-19 07:19:16,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:16,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 438 transitions. [2022-01-19 07:19:16,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 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) [2022-01-19 07:19:16,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 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) [2022-01-19 07:19:16,528 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 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) [2022-01-19 07:19:16,528 INFO L186 Difference]: Start difference. First operand has 143 places, 105 transitions, 520 flow. Second operand 5 states and 438 transitions. [2022-01-19 07:19:16,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 114 transitions, 608 flow [2022-01-19 07:19:16,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 114 transitions, 592 flow, removed 7 selfloop flow, removed 1 redundant places. [2022-01-19 07:19:16,539 INFO L242 Difference]: Finished difference. Result has 148 places, 107 transitions, 536 flow [2022-01-19 07:19:16,540 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=536, PETRI_PLACES=148, PETRI_TRANSITIONS=107} [2022-01-19 07:19:16,540 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 57 predicate places. [2022-01-19 07:19:16,540 INFO L470 AbstractCegarLoop]: Abstraction has has 148 places, 107 transitions, 536 flow [2022-01-19 07:19:16,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 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) [2022-01-19 07:19:16,541 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:16,541 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:16,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 07:19:16,541 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:16,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:16,542 INFO L85 PathProgramCache]: Analyzing trace with hash -384437336, now seen corresponding path program 1 times [2022-01-19 07:19:16,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:16,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395431920] [2022-01-19 07:19:16,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:16,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:16,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:16,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:16,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395431920] [2022-01-19 07:19:16,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395431920] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:16,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:16,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:16,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160953435] [2022-01-19 07:19:16,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:16,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:16,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:16,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:16,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:16,662 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:16,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 107 transitions, 536 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:16,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:16,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:16,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:17,019 INFO L129 PetriNetUnfolder]: 121/532 cut-off events. [2022-01-19 07:19:17,020 INFO L130 PetriNetUnfolder]: For 2482/2489 co-relation queries the response was YES. [2022-01-19 07:19:17,023 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2142 conditions, 532 events. 121/532 cut-off events. For 2482/2489 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2890 event pairs, 66 based on Foata normal form. 1/525 useless extension candidates. Maximal degree in co-relation 2098. Up to 228 conditions per place. [2022-01-19 07:19:17,025 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 81 selfloop transitions, 5 changer transitions 41/186 dead transitions. [2022-01-19 07:19:17,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 186 transitions, 1365 flow [2022-01-19 07:19:17,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 07:19:17,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 07:19:17,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1626 transitions. [2022-01-19 07:19:17,028 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6642156862745098 [2022-01-19 07:19:17,028 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1626 transitions. [2022-01-19 07:19:17,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1626 transitions. [2022-01-19 07:19:17,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:17,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1626 transitions. [2022-01-19 07:19:17,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 67.75) internal successors, (1626), 24 states have internal predecessors, (1626), 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) [2022-01-19 07:19:17,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 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) [2022-01-19 07:19:17,041 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 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) [2022-01-19 07:19:17,041 INFO L186 Difference]: Start difference. First operand has 148 places, 107 transitions, 536 flow. Second operand 24 states and 1626 transitions. [2022-01-19 07:19:17,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 186 transitions, 1365 flow [2022-01-19 07:19:17,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 186 transitions, 1353 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-01-19 07:19:17,052 INFO L242 Difference]: Finished difference. Result has 187 places, 107 transitions, 575 flow [2022-01-19 07:19:17,053 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=575, PETRI_PLACES=187, PETRI_TRANSITIONS=107} [2022-01-19 07:19:17,053 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 96 predicate places. [2022-01-19 07:19:17,053 INFO L470 AbstractCegarLoop]: Abstraction has has 187 places, 107 transitions, 575 flow [2022-01-19 07:19:17,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:17,054 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:17,054 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:17,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 07:19:17,054 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:17,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:17,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1633904260, now seen corresponding path program 2 times [2022-01-19 07:19:17,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:17,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003672019] [2022-01-19 07:19:17,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:17,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:17,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:17,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:17,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003672019] [2022-01-19 07:19:17,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003672019] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:17,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:17,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:17,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717540902] [2022-01-19 07:19:17,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:17,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:17,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:17,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:17,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:17,192 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:17,193 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 107 transitions, 575 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:17,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:17,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:17,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:17,470 INFO L129 PetriNetUnfolder]: 129/555 cut-off events. [2022-01-19 07:19:17,470 INFO L130 PetriNetUnfolder]: For 4770/4778 co-relation queries the response was YES. [2022-01-19 07:19:17,474 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2728 conditions, 555 events. 129/555 cut-off events. For 4770/4778 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3027 event pairs, 77 based on Foata normal form. 1/545 useless extension candidates. Maximal degree in co-relation 2666. Up to 268 conditions per place. [2022-01-19 07:19:17,477 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 63 selfloop transitions, 12 changer transitions 29/163 dead transitions. [2022-01-19 07:19:17,477 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 163 transitions, 1484 flow [2022-01-19 07:19:17,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 07:19:17,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 07:19:17,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1351 transitions. [2022-01-19 07:19:17,480 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6622549019607843 [2022-01-19 07:19:17,480 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1351 transitions. [2022-01-19 07:19:17,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1351 transitions. [2022-01-19 07:19:17,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:17,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1351 transitions. [2022-01-19 07:19:17,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 67.55) internal successors, (1351), 20 states have internal predecessors, (1351), 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) [2022-01-19 07:19:17,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 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) [2022-01-19 07:19:17,486 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 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) [2022-01-19 07:19:17,486 INFO L186 Difference]: Start difference. First operand has 187 places, 107 transitions, 575 flow. Second operand 20 states and 1351 transitions. [2022-01-19 07:19:17,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 163 transitions, 1484 flow [2022-01-19 07:19:17,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 163 transitions, 1212 flow, removed 98 selfloop flow, removed 22 redundant places. [2022-01-19 07:19:17,500 INFO L242 Difference]: Finished difference. Result has 184 places, 117 transitions, 717 flow [2022-01-19 07:19:17,500 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=717, PETRI_PLACES=184, PETRI_TRANSITIONS=117} [2022-01-19 07:19:17,501 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 93 predicate places. [2022-01-19 07:19:17,501 INFO L470 AbstractCegarLoop]: Abstraction has has 184 places, 117 transitions, 717 flow [2022-01-19 07:19:17,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:17,501 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:17,501 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:17,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 07:19:17,502 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:17,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:17,502 INFO L85 PathProgramCache]: Analyzing trace with hash 263114164, now seen corresponding path program 2 times [2022-01-19 07:19:17,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:17,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639787889] [2022-01-19 07:19:17,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:17,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:17,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:17,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:17,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639787889] [2022-01-19 07:19:17,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639787889] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:17,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:17,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:19:17,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111916433] [2022-01-19 07:19:17,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:17,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:19:17,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:17,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:19:17,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:19:17,549 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 102 [2022-01-19 07:19:17,550 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 117 transitions, 717 flow. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 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) [2022-01-19 07:19:17,550 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:17,550 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 102 [2022-01-19 07:19:17,550 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:17,620 INFO L129 PetriNetUnfolder]: 49/346 cut-off events. [2022-01-19 07:19:17,620 INFO L130 PetriNetUnfolder]: For 2048/2055 co-relation queries the response was YES. [2022-01-19 07:19:17,622 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1368 conditions, 346 events. 49/346 cut-off events. For 2048/2055 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1689 event pairs, 29 based on Foata normal form. 6/336 useless extension candidates. Maximal degree in co-relation 1306. Up to 44 conditions per place. [2022-01-19 07:19:17,624 INFO L132 encePairwiseOnDemand]: 95/102 looper letters, 21 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2022-01-19 07:19:17,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 124 transitions, 803 flow [2022-01-19 07:19:17,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:19:17,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:19:17,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 436 transitions. [2022-01-19 07:19:17,625 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8549019607843137 [2022-01-19 07:19:17,625 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 436 transitions. [2022-01-19 07:19:17,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 436 transitions. [2022-01-19 07:19:17,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:17,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 436 transitions. [2022-01-19 07:19:17,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.2) internal successors, (436), 5 states have internal predecessors, (436), 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) [2022-01-19 07:19:17,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 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) [2022-01-19 07:19:17,628 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 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) [2022-01-19 07:19:17,628 INFO L186 Difference]: Start difference. First operand has 184 places, 117 transitions, 717 flow. Second operand 5 states and 436 transitions. [2022-01-19 07:19:17,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 124 transitions, 803 flow [2022-01-19 07:19:17,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 124 transitions, 688 flow, removed 54 selfloop flow, removed 11 redundant places. [2022-01-19 07:19:17,639 INFO L242 Difference]: Finished difference. Result has 167 places, 119 transitions, 644 flow [2022-01-19 07:19:17,639 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=644, PETRI_PLACES=167, PETRI_TRANSITIONS=119} [2022-01-19 07:19:17,639 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 76 predicate places. [2022-01-19 07:19:17,639 INFO L470 AbstractCegarLoop]: Abstraction has has 167 places, 119 transitions, 644 flow [2022-01-19 07:19:17,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 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) [2022-01-19 07:19:17,640 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:17,640 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:17,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 07:19:17,640 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:17,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:17,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1922867324, now seen corresponding path program 4 times [2022-01-19 07:19:17,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:17,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788447098] [2022-01-19 07:19:17,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:17,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:17,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:17,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:17,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788447098] [2022-01-19 07:19:17,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788447098] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:17,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:17,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:17,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062324492] [2022-01-19 07:19:17,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:17,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:17,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:17,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:17,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:17,757 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:17,758 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 119 transitions, 644 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:17,758 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:17,758 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:17,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:18,103 INFO L129 PetriNetUnfolder]: 109/470 cut-off events. [2022-01-19 07:19:18,104 INFO L130 PetriNetUnfolder]: For 1903/1914 co-relation queries the response was YES. [2022-01-19 07:19:18,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1937 conditions, 470 events. 109/470 cut-off events. For 1903/1914 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2410 event pairs, 59 based on Foata normal form. 1/463 useless extension candidates. Maximal degree in co-relation 1883. Up to 189 conditions per place. [2022-01-19 07:19:18,109 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 72 selfloop transitions, 15 changer transitions 26/174 dead transitions. [2022-01-19 07:19:18,109 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 174 transitions, 1305 flow [2022-01-19 07:19:18,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 07:19:18,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 07:19:18,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1414 transitions. [2022-01-19 07:19:18,112 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6601307189542484 [2022-01-19 07:19:18,112 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1414 transitions. [2022-01-19 07:19:18,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1414 transitions. [2022-01-19 07:19:18,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:18,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1414 transitions. [2022-01-19 07:19:18,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.33333333333333) internal successors, (1414), 21 states have internal predecessors, (1414), 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) [2022-01-19 07:19:18,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 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) [2022-01-19 07:19:18,159 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 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) [2022-01-19 07:19:18,159 INFO L186 Difference]: Start difference. First operand has 167 places, 119 transitions, 644 flow. Second operand 21 states and 1414 transitions. [2022-01-19 07:19:18,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 174 transitions, 1305 flow [2022-01-19 07:19:18,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 174 transitions, 1281 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-01-19 07:19:18,171 INFO L242 Difference]: Finished difference. Result has 195 places, 130 transitions, 811 flow [2022-01-19 07:19:18,171 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=811, PETRI_PLACES=195, PETRI_TRANSITIONS=130} [2022-01-19 07:19:18,172 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 104 predicate places. [2022-01-19 07:19:18,172 INFO L470 AbstractCegarLoop]: Abstraction has has 195 places, 130 transitions, 811 flow [2022-01-19 07:19:18,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:18,173 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:18,173 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:18,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 07:19:18,173 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:18,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:18,174 INFO L85 PathProgramCache]: Analyzing trace with hash 253627028, now seen corresponding path program 3 times [2022-01-19 07:19:18,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:18,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684299882] [2022-01-19 07:19:18,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:18,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:18,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:18,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:18,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:18,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684299882] [2022-01-19 07:19:18,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684299882] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:18,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:18,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:18,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089807716] [2022-01-19 07:19:18,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:18,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:18,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:18,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:18,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:18,284 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:18,285 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 130 transitions, 811 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:18,285 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:18,285 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:18,285 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:18,583 INFO L129 PetriNetUnfolder]: 111/499 cut-off events. [2022-01-19 07:19:18,583 INFO L130 PetriNetUnfolder]: For 2705/2719 co-relation queries the response was YES. [2022-01-19 07:19:18,587 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2262 conditions, 499 events. 111/499 cut-off events. For 2705/2719 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2670 event pairs, 51 based on Foata normal form. 1/492 useless extension candidates. Maximal degree in co-relation 2198. Up to 213 conditions per place. [2022-01-19 07:19:18,589 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 82 selfloop transitions, 14 changer transitions 32/189 dead transitions. [2022-01-19 07:19:18,589 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 189 transitions, 1611 flow [2022-01-19 07:19:18,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 07:19:18,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 07:19:18,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1355 transitions. [2022-01-19 07:19:18,592 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6642156862745098 [2022-01-19 07:19:18,592 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1355 transitions. [2022-01-19 07:19:18,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1355 transitions. [2022-01-19 07:19:18,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:18,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1355 transitions. [2022-01-19 07:19:18,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 67.75) internal successors, (1355), 20 states have internal predecessors, (1355), 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) [2022-01-19 07:19:18,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 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) [2022-01-19 07:19:18,598 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 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) [2022-01-19 07:19:18,598 INFO L186 Difference]: Start difference. First operand has 195 places, 130 transitions, 811 flow. Second operand 20 states and 1355 transitions. [2022-01-19 07:19:18,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 189 transitions, 1611 flow [2022-01-19 07:19:18,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 189 transitions, 1571 flow, removed 20 selfloop flow, removed 10 redundant places. [2022-01-19 07:19:18,612 INFO L242 Difference]: Finished difference. Result has 208 places, 140 transitions, 976 flow [2022-01-19 07:19:18,613 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=976, PETRI_PLACES=208, PETRI_TRANSITIONS=140} [2022-01-19 07:19:18,613 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 117 predicate places. [2022-01-19 07:19:18,613 INFO L470 AbstractCegarLoop]: Abstraction has has 208 places, 140 transitions, 976 flow [2022-01-19 07:19:18,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:18,614 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:18,614 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:18,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-19 07:19:18,614 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:18,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:18,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1761379566, now seen corresponding path program 4 times [2022-01-19 07:19:18,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:18,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403739220] [2022-01-19 07:19:18,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:18,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:18,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:18,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:18,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403739220] [2022-01-19 07:19:18,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403739220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:18,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:18,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:18,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71941763] [2022-01-19 07:19:18,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:18,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:18,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:18,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:18,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:18,720 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:18,721 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 140 transitions, 976 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:18,721 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:18,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:18,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:19,051 INFO L129 PetriNetUnfolder]: 108/506 cut-off events. [2022-01-19 07:19:19,051 INFO L130 PetriNetUnfolder]: For 3315/3332 co-relation queries the response was YES. [2022-01-19 07:19:19,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2403 conditions, 506 events. 108/506 cut-off events. For 3315/3332 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2794 event pairs, 42 based on Foata normal form. 1/500 useless extension candidates. Maximal degree in co-relation 2331. Up to 176 conditions per place. [2022-01-19 07:19:19,058 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 103 selfloop transitions, 15 changer transitions 42/221 dead transitions. [2022-01-19 07:19:19,058 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 221 transitions, 2119 flow [2022-01-19 07:19:19,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 07:19:19,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 07:19:19,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1623 transitions. [2022-01-19 07:19:19,061 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6629901960784313 [2022-01-19 07:19:19,061 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1623 transitions. [2022-01-19 07:19:19,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1623 transitions. [2022-01-19 07:19:19,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:19,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1623 transitions. [2022-01-19 07:19:19,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 67.625) internal successors, (1623), 24 states have internal predecessors, (1623), 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) [2022-01-19 07:19:19,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 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) [2022-01-19 07:19:19,068 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 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) [2022-01-19 07:19:19,068 INFO L186 Difference]: Start difference. First operand has 208 places, 140 transitions, 976 flow. Second operand 24 states and 1623 transitions. [2022-01-19 07:19:19,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 221 transitions, 2119 flow [2022-01-19 07:19:19,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 221 transitions, 1791 flow, removed 157 selfloop flow, removed 13 redundant places. [2022-01-19 07:19:19,086 INFO L242 Difference]: Finished difference. Result has 224 places, 140 transitions, 951 flow [2022-01-19 07:19:19,087 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=951, PETRI_PLACES=224, PETRI_TRANSITIONS=140} [2022-01-19 07:19:19,087 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 133 predicate places. [2022-01-19 07:19:19,087 INFO L470 AbstractCegarLoop]: Abstraction has has 224 places, 140 transitions, 951 flow [2022-01-19 07:19:19,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:19,088 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:19,088 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:19,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-19 07:19:19,089 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:19,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:19,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1592848106, now seen corresponding path program 5 times [2022-01-19 07:19:19,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:19,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041892558] [2022-01-19 07:19:19,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:19,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:19,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:19,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:19,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041892558] [2022-01-19 07:19:19,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041892558] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:19,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:19,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:19,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073747683] [2022-01-19 07:19:19,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:19,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:19,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:19,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:19,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:19,188 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:19,189 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 140 transitions, 951 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:19,189 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:19,189 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:19,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:19,554 INFO L129 PetriNetUnfolder]: 120/557 cut-off events. [2022-01-19 07:19:19,555 INFO L130 PetriNetUnfolder]: For 3132/3144 co-relation queries the response was YES. [2022-01-19 07:19:19,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2552 conditions, 557 events. 120/557 cut-off events. For 3132/3144 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3221 event pairs, 50 based on Foata normal form. 1/552 useless extension candidates. Maximal degree in co-relation 2474. Up to 227 conditions per place. [2022-01-19 07:19:19,561 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 88 selfloop transitions, 23 changer transitions 33/205 dead transitions. [2022-01-19 07:19:19,561 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 205 transitions, 1908 flow [2022-01-19 07:19:19,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 07:19:19,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 07:19:19,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1482 transitions. [2022-01-19 07:19:19,566 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.660427807486631 [2022-01-19 07:19:19,566 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1482 transitions. [2022-01-19 07:19:19,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1482 transitions. [2022-01-19 07:19:19,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:19,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1482 transitions. [2022-01-19 07:19:19,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 67.36363636363636) internal successors, (1482), 22 states have internal predecessors, (1482), 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) [2022-01-19 07:19:19,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 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) [2022-01-19 07:19:19,572 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 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) [2022-01-19 07:19:19,573 INFO L186 Difference]: Start difference. First operand has 224 places, 140 transitions, 951 flow. Second operand 22 states and 1482 transitions. [2022-01-19 07:19:19,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 205 transitions, 1908 flow [2022-01-19 07:19:19,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 205 transitions, 1706 flow, removed 40 selfloop flow, removed 23 redundant places. [2022-01-19 07:19:19,590 INFO L242 Difference]: Finished difference. Result has 220 places, 151 transitions, 1076 flow [2022-01-19 07:19:19,590 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1076, PETRI_PLACES=220, PETRI_TRANSITIONS=151} [2022-01-19 07:19:19,591 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 129 predicate places. [2022-01-19 07:19:19,592 INFO L470 AbstractCegarLoop]: Abstraction has has 220 places, 151 transitions, 1076 flow [2022-01-19 07:19:19,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:19,593 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:19,593 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:19,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-19 07:19:19,593 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:19,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:19,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1895668264, now seen corresponding path program 6 times [2022-01-19 07:19:19,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:19,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617173025] [2022-01-19 07:19:19,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:19,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:19,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:19,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:19,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617173025] [2022-01-19 07:19:19,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617173025] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:19,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:19,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:19,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909666414] [2022-01-19 07:19:19,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:19,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:19,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:19,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:19,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:19,702 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:19,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 151 transitions, 1076 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:19,703 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:19,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:19,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:20,025 INFO L129 PetriNetUnfolder]: 116/530 cut-off events. [2022-01-19 07:19:20,025 INFO L130 PetriNetUnfolder]: For 2946/2966 co-relation queries the response was YES. [2022-01-19 07:19:20,029 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2429 conditions, 530 events. 116/530 cut-off events. For 2946/2966 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2989 event pairs, 52 based on Foata normal form. 4/527 useless extension candidates. Maximal degree in co-relation 2354. Up to 223 conditions per place. [2022-01-19 07:19:20,032 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 85 selfloop transitions, 23 changer transitions 34/203 dead transitions. [2022-01-19 07:19:20,032 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 203 transitions, 1920 flow [2022-01-19 07:19:20,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 07:19:20,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 07:19:20,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1421 transitions. [2022-01-19 07:19:20,034 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6633986928104575 [2022-01-19 07:19:20,034 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1421 transitions. [2022-01-19 07:19:20,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1421 transitions. [2022-01-19 07:19:20,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:20,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1421 transitions. [2022-01-19 07:19:20,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.66666666666667) internal successors, (1421), 21 states have internal predecessors, (1421), 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) [2022-01-19 07:19:20,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 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) [2022-01-19 07:19:20,040 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 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) [2022-01-19 07:19:20,040 INFO L186 Difference]: Start difference. First operand has 220 places, 151 transitions, 1076 flow. Second operand 21 states and 1421 transitions. [2022-01-19 07:19:20,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 203 transitions, 1920 flow [2022-01-19 07:19:20,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 203 transitions, 1768 flow, removed 69 selfloop flow, removed 12 redundant places. [2022-01-19 07:19:20,057 INFO L242 Difference]: Finished difference. Result has 230 places, 155 transitions, 1179 flow [2022-01-19 07:19:20,057 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1179, PETRI_PLACES=230, PETRI_TRANSITIONS=155} [2022-01-19 07:19:20,057 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 139 predicate places. [2022-01-19 07:19:20,057 INFO L470 AbstractCegarLoop]: Abstraction has has 230 places, 155 transitions, 1179 flow [2022-01-19 07:19:20,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:20,058 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:20,058 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:20,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-19 07:19:20,058 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:20,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:20,059 INFO L85 PathProgramCache]: Analyzing trace with hash 676415914, now seen corresponding path program 7 times [2022-01-19 07:19:20,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:20,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843004262] [2022-01-19 07:19:20,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:20,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:20,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:20,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:20,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843004262] [2022-01-19 07:19:20,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843004262] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:20,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:20,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:20,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757186345] [2022-01-19 07:19:20,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:20,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:20,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:20,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:20,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:20,151 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:20,152 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 155 transitions, 1179 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:20,152 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:20,152 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:20,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:20,391 INFO L129 PetriNetUnfolder]: 109/514 cut-off events. [2022-01-19 07:19:20,392 INFO L130 PetriNetUnfolder]: For 3038/3064 co-relation queries the response was YES. [2022-01-19 07:19:20,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2394 conditions, 514 events. 109/514 cut-off events. For 3038/3064 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2908 event pairs, 51 based on Foata normal form. 7/513 useless extension candidates. Maximal degree in co-relation 2314. Up to 233 conditions per place. [2022-01-19 07:19:20,401 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 84 selfloop transitions, 26 changer transitions 27/198 dead transitions. [2022-01-19 07:19:20,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 198 transitions, 1923 flow [2022-01-19 07:19:20,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 07:19:20,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 07:19:20,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1088 transitions. [2022-01-19 07:19:20,403 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2022-01-19 07:19:20,403 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1088 transitions. [2022-01-19 07:19:20,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1088 transitions. [2022-01-19 07:19:20,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:20,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1088 transitions. [2022-01-19 07:19:20,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 68.0) internal successors, (1088), 16 states have internal predecessors, (1088), 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) [2022-01-19 07:19:20,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 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) [2022-01-19 07:19:20,407 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 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) [2022-01-19 07:19:20,408 INFO L186 Difference]: Start difference. First operand has 230 places, 155 transitions, 1179 flow. Second operand 16 states and 1088 transitions. [2022-01-19 07:19:20,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 198 transitions, 1923 flow [2022-01-19 07:19:20,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 198 transitions, 1769 flow, removed 58 selfloop flow, removed 15 redundant places. [2022-01-19 07:19:20,427 INFO L242 Difference]: Finished difference. Result has 226 places, 160 transitions, 1237 flow [2022-01-19 07:19:20,427 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1237, PETRI_PLACES=226, PETRI_TRANSITIONS=160} [2022-01-19 07:19:20,427 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 135 predicate places. [2022-01-19 07:19:20,428 INFO L470 AbstractCegarLoop]: Abstraction has has 226 places, 160 transitions, 1237 flow [2022-01-19 07:19:20,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:20,428 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:20,428 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:20,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-19 07:19:20,428 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:20,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:20,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1617779906, now seen corresponding path program 8 times [2022-01-19 07:19:20,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:20,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063230658] [2022-01-19 07:19:20,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:20,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:20,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:20,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:20,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063230658] [2022-01-19 07:19:20,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063230658] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:20,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:20,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:20,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735900483] [2022-01-19 07:19:20,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:20,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:20,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:20,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:20,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:20,517 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:20,518 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 160 transitions, 1237 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:20,518 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:20,518 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:20,518 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:20,804 INFO L129 PetriNetUnfolder]: 100/495 cut-off events. [2022-01-19 07:19:20,804 INFO L130 PetriNetUnfolder]: For 2413/2435 co-relation queries the response was YES. [2022-01-19 07:19:20,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2186 conditions, 495 events. 100/495 cut-off events. For 2413/2435 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2718 event pairs, 46 based on Foata normal form. 3/492 useless extension candidates. Maximal degree in co-relation 2110. Up to 221 conditions per place. [2022-01-19 07:19:20,811 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 80 selfloop transitions, 14 changer transitions 35/190 dead transitions. [2022-01-19 07:19:20,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 190 transitions, 1741 flow [2022-01-19 07:19:20,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:19:20,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:19:20,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1213 transitions. [2022-01-19 07:19:20,813 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6606753812636166 [2022-01-19 07:19:20,813 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1213 transitions. [2022-01-19 07:19:20,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1213 transitions. [2022-01-19 07:19:20,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:20,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1213 transitions. [2022-01-19 07:19:20,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.38888888888889) internal successors, (1213), 18 states have internal predecessors, (1213), 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) [2022-01-19 07:19:20,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 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) [2022-01-19 07:19:20,818 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 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) [2022-01-19 07:19:20,818 INFO L186 Difference]: Start difference. First operand has 226 places, 160 transitions, 1237 flow. Second operand 18 states and 1213 transitions. [2022-01-19 07:19:20,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 190 transitions, 1741 flow [2022-01-19 07:19:20,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 190 transitions, 1617 flow, removed 36 selfloop flow, removed 10 redundant places. [2022-01-19 07:19:20,835 INFO L242 Difference]: Finished difference. Result has 233 places, 145 transitions, 1002 flow [2022-01-19 07:19:20,836 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1137, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1002, PETRI_PLACES=233, PETRI_TRANSITIONS=145} [2022-01-19 07:19:20,836 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 142 predicate places. [2022-01-19 07:19:20,836 INFO L470 AbstractCegarLoop]: Abstraction has has 233 places, 145 transitions, 1002 flow [2022-01-19 07:19:20,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:20,837 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:20,837 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:20,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-19 07:19:20,837 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:20,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:20,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1072737310, now seen corresponding path program 9 times [2022-01-19 07:19:20,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:20,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649382594] [2022-01-19 07:19:20,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:20,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:20,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:20,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:20,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649382594] [2022-01-19 07:19:20,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649382594] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:20,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:20,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:20,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413666527] [2022-01-19 07:19:20,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:20,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:20,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:20,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:20,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:20,949 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:20,950 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 145 transitions, 1002 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:20,950 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:20,950 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:20,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:21,241 INFO L129 PetriNetUnfolder]: 102/489 cut-off events. [2022-01-19 07:19:21,241 INFO L130 PetriNetUnfolder]: For 2460/2480 co-relation queries the response was YES. [2022-01-19 07:19:21,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2200 conditions, 489 events. 102/489 cut-off events. For 2460/2480 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2649 event pairs, 52 based on Foata normal form. 3/484 useless extension candidates. Maximal degree in co-relation 2124. Up to 221 conditions per place. [2022-01-19 07:19:21,248 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 77 selfloop transitions, 22 changer transitions 25/185 dead transitions. [2022-01-19 07:19:21,249 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 185 transitions, 1679 flow [2022-01-19 07:19:21,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:19:21,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:19:21,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1219 transitions. [2022-01-19 07:19:21,251 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6639433551198257 [2022-01-19 07:19:21,251 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1219 transitions. [2022-01-19 07:19:21,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1219 transitions. [2022-01-19 07:19:21,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:21,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1219 transitions. [2022-01-19 07:19:21,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.72222222222223) internal successors, (1219), 18 states have internal predecessors, (1219), 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) [2022-01-19 07:19:21,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 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) [2022-01-19 07:19:21,256 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 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) [2022-01-19 07:19:21,256 INFO L186 Difference]: Start difference. First operand has 233 places, 145 transitions, 1002 flow. Second operand 18 states and 1219 transitions. [2022-01-19 07:19:21,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 185 transitions, 1679 flow [2022-01-19 07:19:21,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 185 transitions, 1532 flow, removed 27 selfloop flow, removed 18 redundant places. [2022-01-19 07:19:21,273 INFO L242 Difference]: Finished difference. Result has 218 places, 154 transitions, 1123 flow [2022-01-19 07:19:21,274 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1123, PETRI_PLACES=218, PETRI_TRANSITIONS=154} [2022-01-19 07:19:21,274 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 127 predicate places. [2022-01-19 07:19:21,274 INFO L470 AbstractCegarLoop]: Abstraction has has 218 places, 154 transitions, 1123 flow [2022-01-19 07:19:21,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:21,275 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:21,275 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:21,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-19 07:19:21,275 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:21,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:21,276 INFO L85 PathProgramCache]: Analyzing trace with hash 924402576, now seen corresponding path program 10 times [2022-01-19 07:19:21,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:21,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230552919] [2022-01-19 07:19:21,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:21,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:21,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:21,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:21,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230552919] [2022-01-19 07:19:21,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230552919] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:21,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:21,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:21,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982645552] [2022-01-19 07:19:21,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:21,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:21,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:21,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:21,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:21,394 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:21,395 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 154 transitions, 1123 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:21,395 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:21,395 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:21,395 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:21,669 INFO L129 PetriNetUnfolder]: 99/491 cut-off events. [2022-01-19 07:19:21,669 INFO L130 PetriNetUnfolder]: For 2137/2157 co-relation queries the response was YES. [2022-01-19 07:19:21,673 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2133 conditions, 491 events. 99/491 cut-off events. For 2137/2157 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2694 event pairs, 49 based on Foata normal form. 3/487 useless extension candidates. Maximal degree in co-relation 2061. Up to 221 conditions per place. [2022-01-19 07:19:21,675 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 78 selfloop transitions, 24 changer transitions 26/189 dead transitions. [2022-01-19 07:19:21,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 189 transitions, 1734 flow [2022-01-19 07:19:21,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 07:19:21,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 07:19:21,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1155 transitions. [2022-01-19 07:19:21,678 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6660899653979239 [2022-01-19 07:19:21,678 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1155 transitions. [2022-01-19 07:19:21,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1155 transitions. [2022-01-19 07:19:21,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:21,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1155 transitions. [2022-01-19 07:19:21,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.94117647058823) internal successors, (1155), 17 states have internal predecessors, (1155), 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) [2022-01-19 07:19:21,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 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) [2022-01-19 07:19:21,683 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 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) [2022-01-19 07:19:21,683 INFO L186 Difference]: Start difference. First operand has 218 places, 154 transitions, 1123 flow. Second operand 17 states and 1155 transitions. [2022-01-19 07:19:21,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 189 transitions, 1734 flow [2022-01-19 07:19:21,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 189 transitions, 1649 flow, removed 37 selfloop flow, removed 5 redundant places. [2022-01-19 07:19:21,698 INFO L242 Difference]: Finished difference. Result has 230 places, 158 transitions, 1210 flow [2022-01-19 07:19:21,698 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1069, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1210, PETRI_PLACES=230, PETRI_TRANSITIONS=158} [2022-01-19 07:19:21,698 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 139 predicate places. [2022-01-19 07:19:21,698 INFO L470 AbstractCegarLoop]: Abstraction has has 230 places, 158 transitions, 1210 flow [2022-01-19 07:19:21,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:21,699 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:21,699 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:21,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-19 07:19:21,699 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:21,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:21,700 INFO L85 PathProgramCache]: Analyzing trace with hash -291420918, now seen corresponding path program 11 times [2022-01-19 07:19:21,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:21,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871744720] [2022-01-19 07:19:21,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:21,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:21,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:21,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:21,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871744720] [2022-01-19 07:19:21,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871744720] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:21,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:21,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:21,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530507314] [2022-01-19 07:19:21,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:21,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:21,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:21,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:21,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:21,802 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:21,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 158 transitions, 1210 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:21,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:21,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:21,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:22,060 INFO L129 PetriNetUnfolder]: 96/491 cut-off events. [2022-01-19 07:19:22,060 INFO L130 PetriNetUnfolder]: For 2180/2196 co-relation queries the response was YES. [2022-01-19 07:19:22,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2118 conditions, 491 events. 96/491 cut-off events. For 2180/2196 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2691 event pairs, 51 based on Foata normal form. 1/485 useless extension candidates. Maximal degree in co-relation 2040. Up to 221 conditions per place. [2022-01-19 07:19:22,067 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 78 selfloop transitions, 14 changer transitions 34/187 dead transitions. [2022-01-19 07:19:22,067 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 187 transitions, 1712 flow [2022-01-19 07:19:22,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 07:19:22,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 07:19:22,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1154 transitions. [2022-01-19 07:19:22,070 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6655132641291811 [2022-01-19 07:19:22,070 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1154 transitions. [2022-01-19 07:19:22,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1154 transitions. [2022-01-19 07:19:22,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:22,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1154 transitions. [2022-01-19 07:19:22,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.88235294117646) internal successors, (1154), 17 states have internal predecessors, (1154), 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) [2022-01-19 07:19:22,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 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) [2022-01-19 07:19:22,074 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 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) [2022-01-19 07:19:22,074 INFO L186 Difference]: Start difference. First operand has 230 places, 158 transitions, 1210 flow. Second operand 17 states and 1154 transitions. [2022-01-19 07:19:22,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 187 transitions, 1712 flow [2022-01-19 07:19:22,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 187 transitions, 1617 flow, removed 26 selfloop flow, removed 8 redundant places. [2022-01-19 07:19:22,092 INFO L242 Difference]: Finished difference. Result has 237 places, 149 transitions, 1058 flow [2022-01-19 07:19:22,092 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1058, PETRI_PLACES=237, PETRI_TRANSITIONS=149} [2022-01-19 07:19:22,093 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 146 predicate places. [2022-01-19 07:19:22,093 INFO L470 AbstractCegarLoop]: Abstraction has has 237 places, 149 transitions, 1058 flow [2022-01-19 07:19:22,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:22,093 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:22,093 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:22,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-19 07:19:22,094 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:22,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:22,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1407903128, now seen corresponding path program 12 times [2022-01-19 07:19:22,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:22,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196569223] [2022-01-19 07:19:22,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:22,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:22,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:22,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:22,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196569223] [2022-01-19 07:19:22,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196569223] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:22,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:22,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:22,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773087582] [2022-01-19 07:19:22,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:22,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:22,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:22,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:22,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:22,201 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:22,202 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 149 transitions, 1058 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:22,202 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:22,202 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:22,202 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:22,521 INFO L129 PetriNetUnfolder]: 86/442 cut-off events. [2022-01-19 07:19:22,521 INFO L130 PetriNetUnfolder]: For 2053/2073 co-relation queries the response was YES. [2022-01-19 07:19:22,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1885 conditions, 442 events. 86/442 cut-off events. For 2053/2073 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2273 event pairs, 46 based on Foata normal form. 3/439 useless extension candidates. Maximal degree in co-relation 1806. Up to 208 conditions per place. [2022-01-19 07:19:22,526 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 68 selfloop transitions, 3 changer transitions 37/169 dead transitions. [2022-01-19 07:19:22,526 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 169 transitions, 1414 flow [2022-01-19 07:19:22,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:19:22,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:19:22,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1209 transitions. [2022-01-19 07:19:22,529 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6584967320261438 [2022-01-19 07:19:22,529 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1209 transitions. [2022-01-19 07:19:22,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1209 transitions. [2022-01-19 07:19:22,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:22,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1209 transitions. [2022-01-19 07:19:22,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.16666666666667) internal successors, (1209), 18 states have internal predecessors, (1209), 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) [2022-01-19 07:19:22,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 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) [2022-01-19 07:19:22,533 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 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) [2022-01-19 07:19:22,533 INFO L186 Difference]: Start difference. First operand has 237 places, 149 transitions, 1058 flow. Second operand 18 states and 1209 transitions. [2022-01-19 07:19:22,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 169 transitions, 1414 flow [2022-01-19 07:19:22,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 169 transitions, 1298 flow, removed 27 selfloop flow, removed 21 redundant places. [2022-01-19 07:19:22,546 INFO L242 Difference]: Finished difference. Result has 222 places, 129 transitions, 775 flow [2022-01-19 07:19:22,546 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=967, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=775, PETRI_PLACES=222, PETRI_TRANSITIONS=129} [2022-01-19 07:19:22,547 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 131 predicate places. [2022-01-19 07:19:22,547 INFO L470 AbstractCegarLoop]: Abstraction has has 222 places, 129 transitions, 775 flow [2022-01-19 07:19:22,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:22,548 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:22,548 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:22,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-19 07:19:22,548 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:22,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:22,548 INFO L85 PathProgramCache]: Analyzing trace with hash -502599450, now seen corresponding path program 13 times [2022-01-19 07:19:22,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:22,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912323911] [2022-01-19 07:19:22,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:22,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:22,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:22,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:22,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912323911] [2022-01-19 07:19:22,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912323911] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:22,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:22,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:22,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986174983] [2022-01-19 07:19:22,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:22,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:22,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:22,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:22,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:22,646 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:22,647 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 129 transitions, 775 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:22,647 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:22,647 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:22,647 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:23,008 INFO L129 PetriNetUnfolder]: 91/461 cut-off events. [2022-01-19 07:19:23,008 INFO L130 PetriNetUnfolder]: For 2005/2016 co-relation queries the response was YES. [2022-01-19 07:19:23,012 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1902 conditions, 461 events. 91/461 cut-off events. For 2005/2016 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2402 event pairs, 42 based on Foata normal form. 1/458 useless extension candidates. Maximal degree in co-relation 1831. Up to 188 conditions per place. [2022-01-19 07:19:23,014 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 74 selfloop transitions, 19 changer transitions 32/186 dead transitions. [2022-01-19 07:19:23,014 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 186 transitions, 1578 flow [2022-01-19 07:19:23,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 07:19:23,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 07:19:23,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1479 transitions. [2022-01-19 07:19:23,019 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2022-01-19 07:19:23,019 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1479 transitions. [2022-01-19 07:19:23,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1479 transitions. [2022-01-19 07:19:23,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:23,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1479 transitions. [2022-01-19 07:19:23,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 67.22727272727273) internal successors, (1479), 22 states have internal predecessors, (1479), 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) [2022-01-19 07:19:23,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 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) [2022-01-19 07:19:23,024 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 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) [2022-01-19 07:19:23,024 INFO L186 Difference]: Start difference. First operand has 222 places, 129 transitions, 775 flow. Second operand 22 states and 1479 transitions. [2022-01-19 07:19:23,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 186 transitions, 1578 flow [2022-01-19 07:19:23,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 186 transitions, 1367 flow, removed 33 selfloop flow, removed 24 redundant places. [2022-01-19 07:19:23,035 INFO L242 Difference]: Finished difference. Result has 205 places, 140 transitions, 896 flow [2022-01-19 07:19:23,036 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=896, PETRI_PLACES=205, PETRI_TRANSITIONS=140} [2022-01-19 07:19:23,036 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 114 predicate places. [2022-01-19 07:19:23,036 INFO L470 AbstractCegarLoop]: Abstraction has has 205 places, 140 transitions, 896 flow [2022-01-19 07:19:23,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:23,036 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:23,037 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:23,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-19 07:19:23,037 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:23,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:23,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1322045660, now seen corresponding path program 14 times [2022-01-19 07:19:23,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:23,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207956472] [2022-01-19 07:19:23,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:23,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:23,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:23,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:23,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207956472] [2022-01-19 07:19:23,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207956472] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:23,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:23,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:23,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282705532] [2022-01-19 07:19:23,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:23,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:23,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:23,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:23,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:23,143 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:23,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 140 transitions, 896 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:23,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:23,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:23,143 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:23,459 INFO L129 PetriNetUnfolder]: 88/449 cut-off events. [2022-01-19 07:19:23,459 INFO L130 PetriNetUnfolder]: For 1753/1764 co-relation queries the response was YES. [2022-01-19 07:19:23,463 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1876 conditions, 449 events. 88/449 cut-off events. For 1753/1764 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2325 event pairs, 43 based on Foata normal form. 1/445 useless extension candidates. Maximal degree in co-relation 1810. Up to 186 conditions per place. [2022-01-19 07:19:23,465 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 70 selfloop transitions, 21 changer transitions 32/184 dead transitions. [2022-01-19 07:19:23,465 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 184 transitions, 1566 flow [2022-01-19 07:19:23,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 07:19:23,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 07:19:23,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1413 transitions. [2022-01-19 07:19:23,467 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6596638655462185 [2022-01-19 07:19:23,467 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1413 transitions. [2022-01-19 07:19:23,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1413 transitions. [2022-01-19 07:19:23,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:23,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1413 transitions. [2022-01-19 07:19:23,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.28571428571429) internal successors, (1413), 21 states have internal predecessors, (1413), 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) [2022-01-19 07:19:23,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 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) [2022-01-19 07:19:23,472 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 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) [2022-01-19 07:19:23,472 INFO L186 Difference]: Start difference. First operand has 205 places, 140 transitions, 896 flow. Second operand 21 states and 1413 transitions. [2022-01-19 07:19:23,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 184 transitions, 1566 flow [2022-01-19 07:19:23,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 184 transitions, 1422 flow, removed 66 selfloop flow, removed 11 redundant places. [2022-01-19 07:19:23,484 INFO L242 Difference]: Finished difference. Result has 214 places, 142 transitions, 959 flow [2022-01-19 07:19:23,484 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=959, PETRI_PLACES=214, PETRI_TRANSITIONS=142} [2022-01-19 07:19:23,484 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 123 predicate places. [2022-01-19 07:19:23,485 INFO L470 AbstractCegarLoop]: Abstraction has has 214 places, 142 transitions, 959 flow [2022-01-19 07:19:23,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:23,485 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:23,485 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:23,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-19 07:19:23,485 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:23,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:23,486 INFO L85 PathProgramCache]: Analyzing trace with hash -562411640, now seen corresponding path program 15 times [2022-01-19 07:19:23,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:23,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367989000] [2022-01-19 07:19:23,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:23,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:23,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:23,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:23,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367989000] [2022-01-19 07:19:23,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367989000] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:23,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:23,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:23,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135382814] [2022-01-19 07:19:23,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:23,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:23,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:23,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:23,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:23,582 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:23,583 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 142 transitions, 959 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:23,583 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:23,583 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:23,583 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:23,798 INFO L129 PetriNetUnfolder]: 85/448 cut-off events. [2022-01-19 07:19:23,798 INFO L130 PetriNetUnfolder]: For 1992/2003 co-relation queries the response was YES. [2022-01-19 07:19:23,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1905 conditions, 448 events. 85/448 cut-off events. For 1992/2003 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2311 event pairs, 40 based on Foata normal form. 1/444 useless extension candidates. Maximal degree in co-relation 1835. Up to 191 conditions per place. [2022-01-19 07:19:23,804 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 70 selfloop transitions, 22 changer transitions 29/182 dead transitions. [2022-01-19 07:19:23,804 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 182 transitions, 1569 flow [2022-01-19 07:19:23,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 07:19:23,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 07:19:23,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1090 transitions. [2022-01-19 07:19:23,806 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6678921568627451 [2022-01-19 07:19:23,806 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1090 transitions. [2022-01-19 07:19:23,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1090 transitions. [2022-01-19 07:19:23,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:23,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1090 transitions. [2022-01-19 07:19:23,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 68.125) internal successors, (1090), 16 states have internal predecessors, (1090), 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) [2022-01-19 07:19:23,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 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) [2022-01-19 07:19:23,813 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 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) [2022-01-19 07:19:23,813 INFO L186 Difference]: Start difference. First operand has 214 places, 142 transitions, 959 flow. Second operand 16 states and 1090 transitions. [2022-01-19 07:19:23,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 182 transitions, 1569 flow [2022-01-19 07:19:23,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 182 transitions, 1412 flow, removed 53 selfloop flow, removed 18 redundant places. [2022-01-19 07:19:23,826 INFO L242 Difference]: Finished difference. Result has 207 places, 147 transitions, 1000 flow [2022-01-19 07:19:23,826 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1000, PETRI_PLACES=207, PETRI_TRANSITIONS=147} [2022-01-19 07:19:23,827 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 116 predicate places. [2022-01-19 07:19:23,827 INFO L470 AbstractCegarLoop]: Abstraction has has 207 places, 147 transitions, 1000 flow [2022-01-19 07:19:23,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:23,827 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:23,827 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:23,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-19 07:19:23,828 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:23,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:23,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1822556410, now seen corresponding path program 16 times [2022-01-19 07:19:23,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:23,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436195287] [2022-01-19 07:19:23,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:23,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:23,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:23,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:23,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436195287] [2022-01-19 07:19:23,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436195287] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:23,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:23,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:23,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068011427] [2022-01-19 07:19:23,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:23,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:23,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:23,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:23,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:23,938 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:23,939 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 147 transitions, 1000 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:23,939 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:23,939 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:23,939 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:24,190 INFO L129 PetriNetUnfolder]: 76/414 cut-off events. [2022-01-19 07:19:24,190 INFO L130 PetriNetUnfolder]: For 1533/1544 co-relation queries the response was YES. [2022-01-19 07:19:24,193 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1704 conditions, 414 events. 76/414 cut-off events. For 1533/1544 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2061 event pairs, 40 based on Foata normal form. 1/410 useless extension candidates. Maximal degree in co-relation 1640. Up to 185 conditions per place. [2022-01-19 07:19:24,200 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 66 selfloop transitions, 10 changer transitions 34/171 dead transitions. [2022-01-19 07:19:24,200 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 171 transitions, 1379 flow [2022-01-19 07:19:24,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:19:24,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:19:24,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1212 transitions. [2022-01-19 07:19:24,202 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6601307189542484 [2022-01-19 07:19:24,202 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1212 transitions. [2022-01-19 07:19:24,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1212 transitions. [2022-01-19 07:19:24,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:24,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1212 transitions. [2022-01-19 07:19:24,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.33333333333333) internal successors, (1212), 18 states have internal predecessors, (1212), 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) [2022-01-19 07:19:24,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 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) [2022-01-19 07:19:24,206 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 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) [2022-01-19 07:19:24,206 INFO L186 Difference]: Start difference. First operand has 207 places, 147 transitions, 1000 flow. Second operand 18 states and 1212 transitions. [2022-01-19 07:19:24,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 171 transitions, 1379 flow [2022-01-19 07:19:24,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 171 transitions, 1275 flow, removed 30 selfloop flow, removed 10 redundant places. [2022-01-19 07:19:24,217 INFO L242 Difference]: Finished difference. Result has 214 places, 132 transitions, 800 flow [2022-01-19 07:19:24,217 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=800, PETRI_PLACES=214, PETRI_TRANSITIONS=132} [2022-01-19 07:19:24,218 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 123 predicate places. [2022-01-19 07:19:24,218 INFO L470 AbstractCegarLoop]: Abstraction has has 214 places, 132 transitions, 800 flow [2022-01-19 07:19:24,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:24,218 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:24,219 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:24,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-19 07:19:24,219 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:24,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:24,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1355553186, now seen corresponding path program 17 times [2022-01-19 07:19:24,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:24,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952206201] [2022-01-19 07:19:24,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:24,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:24,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:24,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:24,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952206201] [2022-01-19 07:19:24,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952206201] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:24,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:24,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:24,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324759739] [2022-01-19 07:19:24,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:24,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:24,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:24,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:24,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:24,322 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:24,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 132 transitions, 800 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:24,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:24,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:24,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:24,594 INFO L129 PetriNetUnfolder]: 81/427 cut-off events. [2022-01-19 07:19:24,594 INFO L130 PetriNetUnfolder]: For 1609/1620 co-relation queries the response was YES. [2022-01-19 07:19:24,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1736 conditions, 427 events. 81/427 cut-off events. For 1609/1620 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2138 event pairs, 41 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 1672. Up to 185 conditions per place. [2022-01-19 07:19:24,598 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 64 selfloop transitions, 20 changer transitions 27/172 dead transitions. [2022-01-19 07:19:24,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 172 transitions, 1382 flow [2022-01-19 07:19:24,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:19:24,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:19:24,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1217 transitions. [2022-01-19 07:19:24,601 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6628540305010894 [2022-01-19 07:19:24,601 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1217 transitions. [2022-01-19 07:19:24,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1217 transitions. [2022-01-19 07:19:24,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:24,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1217 transitions. [2022-01-19 07:19:24,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.61111111111111) internal successors, (1217), 18 states have internal predecessors, (1217), 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) [2022-01-19 07:19:24,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 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) [2022-01-19 07:19:24,606 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 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) [2022-01-19 07:19:24,606 INFO L186 Difference]: Start difference. First operand has 214 places, 132 transitions, 800 flow. Second operand 18 states and 1217 transitions. [2022-01-19 07:19:24,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 172 transitions, 1382 flow [2022-01-19 07:19:24,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 172 transitions, 1236 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-01-19 07:19:24,616 INFO L242 Difference]: Finished difference. Result has 199 places, 141 transitions, 913 flow [2022-01-19 07:19:24,616 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=913, PETRI_PLACES=199, PETRI_TRANSITIONS=141} [2022-01-19 07:19:24,617 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 108 predicate places. [2022-01-19 07:19:24,617 INFO L470 AbstractCegarLoop]: Abstraction has has 199 places, 141 transitions, 913 flow [2022-01-19 07:19:24,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:24,617 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:24,617 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:24,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-19 07:19:24,618 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:24,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:24,618 INFO L85 PathProgramCache]: Analyzing trace with hash -16762456, now seen corresponding path program 18 times [2022-01-19 07:19:24,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:24,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414216348] [2022-01-19 07:19:24,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:24,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:24,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:24,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:24,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414216348] [2022-01-19 07:19:24,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414216348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:24,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:24,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:24,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156264481] [2022-01-19 07:19:24,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:24,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:24,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:24,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:24,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:24,713 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:24,714 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 141 transitions, 913 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:24,714 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:24,714 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:24,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:24,985 INFO L129 PetriNetUnfolder]: 77/417 cut-off events. [2022-01-19 07:19:24,986 INFO L130 PetriNetUnfolder]: For 1386/1397 co-relation queries the response was YES. [2022-01-19 07:19:24,988 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 417 events. 77/417 cut-off events. For 1386/1397 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2081 event pairs, 37 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 1617. Up to 185 conditions per place. [2022-01-19 07:19:24,990 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 65 selfloop transitions, 22 changer transitions 28/176 dead transitions. [2022-01-19 07:19:24,990 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 176 transitions, 1429 flow [2022-01-19 07:19:24,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 07:19:24,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 07:19:24,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1153 transitions. [2022-01-19 07:19:24,992 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6649365628604383 [2022-01-19 07:19:24,992 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1153 transitions. [2022-01-19 07:19:24,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1153 transitions. [2022-01-19 07:19:24,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:24,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1153 transitions. [2022-01-19 07:19:24,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.82352941176471) internal successors, (1153), 17 states have internal predecessors, (1153), 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) [2022-01-19 07:19:24,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 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) [2022-01-19 07:19:24,996 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 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) [2022-01-19 07:19:24,996 INFO L186 Difference]: Start difference. First operand has 199 places, 141 transitions, 913 flow. Second operand 17 states and 1153 transitions. [2022-01-19 07:19:24,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 176 transitions, 1429 flow [2022-01-19 07:19:25,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 176 transitions, 1348 flow, removed 36 selfloop flow, removed 5 redundant places. [2022-01-19 07:19:25,008 INFO L242 Difference]: Finished difference. Result has 211 places, 145 transitions, 995 flow [2022-01-19 07:19:25,008 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=995, PETRI_PLACES=211, PETRI_TRANSITIONS=145} [2022-01-19 07:19:25,009 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 120 predicate places. [2022-01-19 07:19:25,009 INFO L470 AbstractCegarLoop]: Abstraction has has 211 places, 145 transitions, 995 flow [2022-01-19 07:19:25,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:25,009 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:25,009 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:25,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-19 07:19:25,009 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:25,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:25,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1346892406, now seen corresponding path program 19 times [2022-01-19 07:19:25,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:25,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031390166] [2022-01-19 07:19:25,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:25,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:25,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:25,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:25,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031390166] [2022-01-19 07:19:25,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031390166] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:25,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:25,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:25,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174527883] [2022-01-19 07:19:25,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:25,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:25,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:25,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:25,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:25,112 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:25,112 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 145 transitions, 995 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:25,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:25,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:25,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:25,373 INFO L129 PetriNetUnfolder]: 71/408 cut-off events. [2022-01-19 07:19:25,373 INFO L130 PetriNetUnfolder]: For 1357/1368 co-relation queries the response was YES. [2022-01-19 07:19:25,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1641 conditions, 408 events. 71/408 cut-off events. For 1357/1368 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2030 event pairs, 37 based on Foata normal form. 1/405 useless extension candidates. Maximal degree in co-relation 1575. Up to 185 conditions per place. [2022-01-19 07:19:25,377 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 63 selfloop transitions, 13 changer transitions 32/169 dead transitions. [2022-01-19 07:19:25,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 169 transitions, 1389 flow [2022-01-19 07:19:25,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:19:25,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:19:25,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1212 transitions. [2022-01-19 07:19:25,380 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6601307189542484 [2022-01-19 07:19:25,380 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1212 transitions. [2022-01-19 07:19:25,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1212 transitions. [2022-01-19 07:19:25,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:25,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1212 transitions. [2022-01-19 07:19:25,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.33333333333333) internal successors, (1212), 18 states have internal predecessors, (1212), 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) [2022-01-19 07:19:25,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 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) [2022-01-19 07:19:25,384 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 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) [2022-01-19 07:19:25,384 INFO L186 Difference]: Start difference. First operand has 211 places, 145 transitions, 995 flow. Second operand 18 states and 1212 transitions. [2022-01-19 07:19:25,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 169 transitions, 1389 flow [2022-01-19 07:19:25,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 169 transitions, 1282 flow, removed 33 selfloop flow, removed 8 redundant places. [2022-01-19 07:19:25,394 INFO L242 Difference]: Finished difference. Result has 220 places, 136 transitions, 861 flow [2022-01-19 07:19:25,395 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=861, PETRI_PLACES=220, PETRI_TRANSITIONS=136} [2022-01-19 07:19:25,395 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 129 predicate places. [2022-01-19 07:19:25,395 INFO L470 AbstractCegarLoop]: Abstraction has has 220 places, 136 transitions, 861 flow [2022-01-19 07:19:25,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:25,395 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:25,396 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:25,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-19 07:19:25,396 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:25,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:25,396 INFO L85 PathProgramCache]: Analyzing trace with hash 2017685588, now seen corresponding path program 20 times [2022-01-19 07:19:25,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:25,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535894672] [2022-01-19 07:19:25,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:25,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:25,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:25,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:25,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535894672] [2022-01-19 07:19:25,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535894672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:25,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:25,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:25,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50820628] [2022-01-19 07:19:25,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:25,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:25,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:25,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:25,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:25,498 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:25,499 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 136 transitions, 861 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:25,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:25,499 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:25,499 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:25,734 INFO L129 PetriNetUnfolder]: 63/337 cut-off events. [2022-01-19 07:19:25,734 INFO L130 PetriNetUnfolder]: For 1148/1159 co-relation queries the response was YES. [2022-01-19 07:19:25,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1378 conditions, 337 events. 63/337 cut-off events. For 1148/1159 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1547 event pairs, 38 based on Foata normal form. 1/333 useless extension candidates. Maximal degree in co-relation 1310. Up to 163 conditions per place. [2022-01-19 07:19:25,737 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 49 selfloop transitions, 0 changer transitions 46/150 dead transitions. [2022-01-19 07:19:25,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 150 transitions, 1113 flow [2022-01-19 07:19:25,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 07:19:25,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 07:19:25,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1139 transitions. [2022-01-19 07:19:25,739 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2022-01-19 07:19:25,739 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1139 transitions. [2022-01-19 07:19:25,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1139 transitions. [2022-01-19 07:19:25,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:25,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1139 transitions. [2022-01-19 07:19:25,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.0) internal successors, (1139), 17 states have internal predecessors, (1139), 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) [2022-01-19 07:19:25,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 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) [2022-01-19 07:19:25,743 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 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) [2022-01-19 07:19:25,743 INFO L186 Difference]: Start difference. First operand has 220 places, 136 transitions, 861 flow. Second operand 17 states and 1139 transitions. [2022-01-19 07:19:25,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 150 transitions, 1113 flow [2022-01-19 07:19:25,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 150 transitions, 1009 flow, removed 27 selfloop flow, removed 21 redundant places. [2022-01-19 07:19:25,752 INFO L242 Difference]: Finished difference. Result has 201 places, 104 transitions, 529 flow [2022-01-19 07:19:25,752 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=529, PETRI_PLACES=201, PETRI_TRANSITIONS=104} [2022-01-19 07:19:25,753 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 110 predicate places. [2022-01-19 07:19:25,753 INFO L470 AbstractCegarLoop]: Abstraction has has 201 places, 104 transitions, 529 flow [2022-01-19 07:19:25,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:25,753 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:25,753 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:25,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-19 07:19:25,753 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:25,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:25,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1259046234, now seen corresponding path program 5 times [2022-01-19 07:19:25,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:25,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085703067] [2022-01-19 07:19:25,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:25,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:25,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:25,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:25,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085703067] [2022-01-19 07:19:25,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085703067] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:25,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:25,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:25,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780677254] [2022-01-19 07:19:25,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:25,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:25,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:25,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:25,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:25,849 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:25,849 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 104 transitions, 529 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:25,850 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:25,850 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:25,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:26,133 INFO L129 PetriNetUnfolder]: 77/354 cut-off events. [2022-01-19 07:19:26,133 INFO L130 PetriNetUnfolder]: For 1203/1205 co-relation queries the response was YES. [2022-01-19 07:19:26,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1379 conditions, 354 events. 77/354 cut-off events. For 1203/1205 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1637 event pairs, 30 based on Foata normal form. 1/352 useless extension candidates. Maximal degree in co-relation 1323. Up to 75 conditions per place. [2022-01-19 07:19:26,137 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 49 selfloop transitions, 25 changer transitions 29/158 dead transitions. [2022-01-19 07:19:26,137 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 158 transitions, 1158 flow [2022-01-19 07:19:26,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 07:19:26,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 07:19:26,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1411 transitions. [2022-01-19 07:19:26,146 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6587301587301587 [2022-01-19 07:19:26,146 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1411 transitions. [2022-01-19 07:19:26,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1411 transitions. [2022-01-19 07:19:26,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:26,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1411 transitions. [2022-01-19 07:19:26,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.19047619047619) internal successors, (1411), 21 states have internal predecessors, (1411), 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) [2022-01-19 07:19:26,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 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) [2022-01-19 07:19:26,151 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 102.0) internal successors, (2244), 22 states have internal predecessors, (2244), 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) [2022-01-19 07:19:26,151 INFO L186 Difference]: Start difference. First operand has 201 places, 104 transitions, 529 flow. Second operand 21 states and 1411 transitions. [2022-01-19 07:19:26,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 158 transitions, 1158 flow [2022-01-19 07:19:26,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 158 transitions, 1131 flow, removed 8 selfloop flow, removed 9 redundant places. [2022-01-19 07:19:26,175 INFO L242 Difference]: Finished difference. Result has 182 places, 114 transitions, 714 flow [2022-01-19 07:19:26,176 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=714, PETRI_PLACES=182, PETRI_TRANSITIONS=114} [2022-01-19 07:19:26,176 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 91 predicate places. [2022-01-19 07:19:26,176 INFO L470 AbstractCegarLoop]: Abstraction has has 182 places, 114 transitions, 714 flow [2022-01-19 07:19:26,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:26,176 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:26,176 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:26,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-19 07:19:26,177 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:26,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:26,177 INFO L85 PathProgramCache]: Analyzing trace with hash -2029187440, now seen corresponding path program 6 times [2022-01-19 07:19:26,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:26,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037351675] [2022-01-19 07:19:26,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:26,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:26,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:26,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:26,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037351675] [2022-01-19 07:19:26,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037351675] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:26,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:26,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:26,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641134783] [2022-01-19 07:19:26,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:26,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:26,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:26,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:26,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:26,288 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:26,288 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 114 transitions, 714 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:26,289 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:26,289 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:26,289 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:26,493 INFO L129 PetriNetUnfolder]: 70/329 cut-off events. [2022-01-19 07:19:26,494 INFO L130 PetriNetUnfolder]: For 2165/2170 co-relation queries the response was YES. [2022-01-19 07:19:26,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1594 conditions, 329 events. 70/329 cut-off events. For 2165/2170 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1496 event pairs, 16 based on Foata normal form. 1/327 useless extension candidates. Maximal degree in co-relation 1530. Up to 76 conditions per place. [2022-01-19 07:19:26,496 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 55 selfloop transitions, 30 changer transitions 20/160 dead transitions. [2022-01-19 07:19:26,497 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 160 transitions, 1445 flow [2022-01-19 07:19:26,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 07:19:26,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 07:19:26,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1078 transitions. [2022-01-19 07:19:26,498 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6605392156862745 [2022-01-19 07:19:26,498 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1078 transitions. [2022-01-19 07:19:26,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1078 transitions. [2022-01-19 07:19:26,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:26,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1078 transitions. [2022-01-19 07:19:26,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.375) internal successors, (1078), 16 states have internal predecessors, (1078), 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) [2022-01-19 07:19:26,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 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) [2022-01-19 07:19:26,502 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 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) [2022-01-19 07:19:26,502 INFO L186 Difference]: Start difference. First operand has 182 places, 114 transitions, 714 flow. Second operand 16 states and 1078 transitions. [2022-01-19 07:19:26,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 160 transitions, 1445 flow [2022-01-19 07:19:26,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 160 transitions, 1299 flow, removed 55 selfloop flow, removed 12 redundant places. [2022-01-19 07:19:26,512 INFO L242 Difference]: Finished difference. Result has 183 places, 124 transitions, 869 flow [2022-01-19 07:19:26,512 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=869, PETRI_PLACES=183, PETRI_TRANSITIONS=124} [2022-01-19 07:19:26,512 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 92 predicate places. [2022-01-19 07:19:26,512 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 124 transitions, 869 flow [2022-01-19 07:19:26,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:26,513 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:26,513 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:26,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-19 07:19:26,513 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:26,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:26,513 INFO L85 PathProgramCache]: Analyzing trace with hash 701916352, now seen corresponding path program 7 times [2022-01-19 07:19:26,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:26,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517744553] [2022-01-19 07:19:26,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:26,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:26,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:26,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:26,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517744553] [2022-01-19 07:19:26,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517744553] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:26,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:26,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:26,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242764303] [2022-01-19 07:19:26,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:26,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:26,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:26,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:26,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:26,601 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:26,601 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 124 transitions, 869 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:26,601 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:26,601 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:26,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:26,888 INFO L129 PetriNetUnfolder]: 74/350 cut-off events. [2022-01-19 07:19:26,888 INFO L130 PetriNetUnfolder]: For 2199/2213 co-relation queries the response was YES. [2022-01-19 07:19:26,890 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1698 conditions, 350 events. 74/350 cut-off events. For 2199/2213 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1704 event pairs, 18 based on Foata normal form. 7/353 useless extension candidates. Maximal degree in co-relation 1633. Up to 74 conditions per place. [2022-01-19 07:19:26,891 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 60 selfloop transitions, 28 changer transitions 34/177 dead transitions. [2022-01-19 07:19:26,891 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 177 transitions, 1679 flow [2022-01-19 07:19:26,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 07:19:26,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 07:19:26,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1472 transitions. [2022-01-19 07:19:26,893 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6559714795008913 [2022-01-19 07:19:26,893 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1472 transitions. [2022-01-19 07:19:26,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1472 transitions. [2022-01-19 07:19:26,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:26,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1472 transitions. [2022-01-19 07:19:26,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 66.9090909090909) internal successors, (1472), 22 states have internal predecessors, (1472), 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) [2022-01-19 07:19:26,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 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) [2022-01-19 07:19:26,898 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 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) [2022-01-19 07:19:26,898 INFO L186 Difference]: Start difference. First operand has 183 places, 124 transitions, 869 flow. Second operand 22 states and 1472 transitions. [2022-01-19 07:19:26,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 177 transitions, 1679 flow [2022-01-19 07:19:26,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 177 transitions, 1502 flow, removed 62 selfloop flow, removed 7 redundant places. [2022-01-19 07:19:26,915 INFO L242 Difference]: Finished difference. Result has 204 places, 124 transitions, 886 flow [2022-01-19 07:19:26,915 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=886, PETRI_PLACES=204, PETRI_TRANSITIONS=124} [2022-01-19 07:19:26,915 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 113 predicate places. [2022-01-19 07:19:26,916 INFO L470 AbstractCegarLoop]: Abstraction has has 204 places, 124 transitions, 886 flow [2022-01-19 07:19:26,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:26,916 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:26,916 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:26,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-19 07:19:26,917 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:26,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:26,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1764122982, now seen corresponding path program 8 times [2022-01-19 07:19:26,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:26,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011093055] [2022-01-19 07:19:26,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:26,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:27,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:27,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:27,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011093055] [2022-01-19 07:19:27,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011093055] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:27,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:27,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:27,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096449816] [2022-01-19 07:19:27,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:27,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:27,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:27,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:27,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:27,003 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:27,003 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 124 transitions, 886 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:27,003 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:27,003 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:27,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:27,218 INFO L129 PetriNetUnfolder]: 61/321 cut-off events. [2022-01-19 07:19:27,218 INFO L130 PetriNetUnfolder]: For 2439/2449 co-relation queries the response was YES. [2022-01-19 07:19:27,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1560 conditions, 321 events. 61/321 cut-off events. For 2439/2449 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1438 event pairs, 16 based on Foata normal form. 4/322 useless extension candidates. Maximal degree in co-relation 1486. Up to 72 conditions per place. [2022-01-19 07:19:27,221 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 51 selfloop transitions, 16 changer transitions 31/153 dead transitions. [2022-01-19 07:19:27,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 153 transitions, 1358 flow [2022-01-19 07:19:27,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:19:27,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:19:27,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1203 transitions. [2022-01-19 07:19:27,223 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6552287581699346 [2022-01-19 07:19:27,223 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1203 transitions. [2022-01-19 07:19:27,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1203 transitions. [2022-01-19 07:19:27,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:27,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1203 transitions. [2022-01-19 07:19:27,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.83333333333333) internal successors, (1203), 18 states have internal predecessors, (1203), 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) [2022-01-19 07:19:27,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 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) [2022-01-19 07:19:27,227 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 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) [2022-01-19 07:19:27,227 INFO L186 Difference]: Start difference. First operand has 204 places, 124 transitions, 886 flow. Second operand 18 states and 1203 transitions. [2022-01-19 07:19:27,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 153 transitions, 1358 flow [2022-01-19 07:19:27,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 153 transitions, 1229 flow, removed 46 selfloop flow, removed 15 redundant places. [2022-01-19 07:19:27,238 INFO L242 Difference]: Finished difference. Result has 199 places, 109 transitions, 670 flow [2022-01-19 07:19:27,238 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=670, PETRI_PLACES=199, PETRI_TRANSITIONS=109} [2022-01-19 07:19:27,239 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 108 predicate places. [2022-01-19 07:19:27,239 INFO L470 AbstractCegarLoop]: Abstraction has has 199 places, 109 transitions, 670 flow [2022-01-19 07:19:27,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:27,239 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:27,239 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:27,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-19 07:19:27,239 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:27,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:27,240 INFO L85 PathProgramCache]: Analyzing trace with hash -133077446, now seen corresponding path program 9 times [2022-01-19 07:19:27,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:27,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044634112] [2022-01-19 07:19:27,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:27,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:27,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:27,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:27,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044634112] [2022-01-19 07:19:27,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044634112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:27,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:27,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:27,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464482358] [2022-01-19 07:19:27,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:27,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:27,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:27,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:27,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:27,333 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:27,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 109 transitions, 670 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:27,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:27,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:27,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:27,560 INFO L129 PetriNetUnfolder]: 63/319 cut-off events. [2022-01-19 07:19:27,561 INFO L130 PetriNetUnfolder]: For 2193/2199 co-relation queries the response was YES. [2022-01-19 07:19:27,563 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1537 conditions, 319 events. 63/319 cut-off events. For 2193/2199 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1409 event pairs, 29 based on Foata normal form. 1/316 useless extension candidates. Maximal degree in co-relation 1469. Up to 72 conditions per place. [2022-01-19 07:19:27,564 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 42 selfloop transitions, 26 changer transitions 21/144 dead transitions. [2022-01-19 07:19:27,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 144 transitions, 1252 flow [2022-01-19 07:19:27,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:19:27,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:19:27,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1209 transitions. [2022-01-19 07:19:27,566 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6584967320261438 [2022-01-19 07:19:27,566 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1209 transitions. [2022-01-19 07:19:27,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1209 transitions. [2022-01-19 07:19:27,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:27,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1209 transitions. [2022-01-19 07:19:27,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.16666666666667) internal successors, (1209), 18 states have internal predecessors, (1209), 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) [2022-01-19 07:19:27,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 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) [2022-01-19 07:19:27,571 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 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) [2022-01-19 07:19:27,571 INFO L186 Difference]: Start difference. First operand has 199 places, 109 transitions, 670 flow. Second operand 18 states and 1209 transitions. [2022-01-19 07:19:27,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 144 transitions, 1252 flow [2022-01-19 07:19:27,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 144 transitions, 1087 flow, removed 34 selfloop flow, removed 19 redundant places. [2022-01-19 07:19:27,581 INFO L242 Difference]: Finished difference. Result has 183 places, 118 transitions, 778 flow [2022-01-19 07:19:27,581 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=778, PETRI_PLACES=183, PETRI_TRANSITIONS=118} [2022-01-19 07:19:27,581 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 92 predicate places. [2022-01-19 07:19:27,581 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 118 transitions, 778 flow [2022-01-19 07:19:27,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:27,582 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:27,582 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:27,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-19 07:19:27,582 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:27,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:27,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1946541864, now seen corresponding path program 10 times [2022-01-19 07:19:27,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:27,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110983650] [2022-01-19 07:19:27,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:27,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:27,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:27,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:27,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110983650] [2022-01-19 07:19:27,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110983650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:27,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:27,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:27,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498536005] [2022-01-19 07:19:27,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:27,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:27,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:27,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:27,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:27,696 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:27,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 118 transitions, 778 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:27,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:27,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:27,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:27,893 INFO L129 PetriNetUnfolder]: 60/314 cut-off events. [2022-01-19 07:19:27,893 INFO L130 PetriNetUnfolder]: For 1552/1562 co-relation queries the response was YES. [2022-01-19 07:19:27,895 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1420 conditions, 314 events. 60/314 cut-off events. For 1552/1562 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1413 event pairs, 27 based on Foata normal form. 3/312 useless extension candidates. Maximal degree in co-relation 1357. Up to 72 conditions per place. [2022-01-19 07:19:27,896 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 43 selfloop transitions, 28 changer transitions 22/148 dead transitions. [2022-01-19 07:19:27,896 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 148 transitions, 1288 flow [2022-01-19 07:19:27,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 07:19:27,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 07:19:27,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1145 transitions. [2022-01-19 07:19:27,897 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.660322952710496 [2022-01-19 07:19:27,897 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1145 transitions. [2022-01-19 07:19:27,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1145 transitions. [2022-01-19 07:19:27,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:27,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1145 transitions. [2022-01-19 07:19:27,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.3529411764706) internal successors, (1145), 17 states have internal predecessors, (1145), 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) [2022-01-19 07:19:27,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 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) [2022-01-19 07:19:27,922 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 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) [2022-01-19 07:19:27,922 INFO L186 Difference]: Start difference. First operand has 183 places, 118 transitions, 778 flow. Second operand 17 states and 1145 transitions. [2022-01-19 07:19:27,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 148 transitions, 1288 flow [2022-01-19 07:19:27,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 148 transitions, 1215 flow, removed 29 selfloop flow, removed 5 redundant places. [2022-01-19 07:19:27,932 INFO L242 Difference]: Finished difference. Result has 195 places, 122 transitions, 874 flow [2022-01-19 07:19:27,932 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=874, PETRI_PLACES=195, PETRI_TRANSITIONS=122} [2022-01-19 07:19:27,933 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 104 predicate places. [2022-01-19 07:19:27,933 INFO L470 AbstractCegarLoop]: Abstraction has has 195 places, 122 transitions, 874 flow [2022-01-19 07:19:27,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:27,933 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:27,934 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:27,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-19 07:19:27,934 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:27,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:27,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1910426902, now seen corresponding path program 11 times [2022-01-19 07:19:27,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:27,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898448871] [2022-01-19 07:19:27,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:27,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:28,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:28,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898448871] [2022-01-19 07:19:28,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898448871] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:28,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:28,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:28,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359184441] [2022-01-19 07:19:28,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:28,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:28,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:28,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:28,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:28,036 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:28,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 122 transitions, 874 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:28,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:28,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:28,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:28,231 INFO L129 PetriNetUnfolder]: 57/314 cut-off events. [2022-01-19 07:19:28,231 INFO L130 PetriNetUnfolder]: For 1704/1710 co-relation queries the response was YES. [2022-01-19 07:19:28,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1419 conditions, 314 events. 57/314 cut-off events. For 1704/1710 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1402 event pairs, 29 based on Foata normal form. 1/310 useless extension candidates. Maximal degree in co-relation 1350. Up to 72 conditions per place. [2022-01-19 07:19:28,235 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 43 selfloop transitions, 18 changer transitions 30/146 dead transitions. [2022-01-19 07:19:28,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 146 transitions, 1284 flow [2022-01-19 07:19:28,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 07:19:28,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 07:19:28,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1144 transitions. [2022-01-19 07:19:28,236 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6597462514417531 [2022-01-19 07:19:28,237 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1144 transitions. [2022-01-19 07:19:28,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1144 transitions. [2022-01-19 07:19:28,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:28,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1144 transitions. [2022-01-19 07:19:28,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.29411764705883) internal successors, (1144), 17 states have internal predecessors, (1144), 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) [2022-01-19 07:19:28,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 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) [2022-01-19 07:19:28,240 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 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) [2022-01-19 07:19:28,240 INFO L186 Difference]: Start difference. First operand has 195 places, 122 transitions, 874 flow. Second operand 17 states and 1144 transitions. [2022-01-19 07:19:28,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 146 transitions, 1284 flow [2022-01-19 07:19:28,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 146 transitions, 1193 flow, removed 22 selfloop flow, removed 8 redundant places. [2022-01-19 07:19:28,250 INFO L242 Difference]: Finished difference. Result has 202 places, 113 transitions, 733 flow [2022-01-19 07:19:28,250 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=733, PETRI_PLACES=202, PETRI_TRANSITIONS=113} [2022-01-19 07:19:28,251 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 111 predicate places. [2022-01-19 07:19:28,251 INFO L470 AbstractCegarLoop]: Abstraction has has 202 places, 113 transitions, 733 flow [2022-01-19 07:19:28,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:28,251 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:28,251 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:28,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-19 07:19:28,251 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:28,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:28,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1117603654, now seen corresponding path program 12 times [2022-01-19 07:19:28,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:28,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997777405] [2022-01-19 07:19:28,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:28,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:28,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:28,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:28,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997777405] [2022-01-19 07:19:28,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997777405] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:28,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:28,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:28,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690557784] [2022-01-19 07:19:28,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:28,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:28,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:28,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:28,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:28,351 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:28,351 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 113 transitions, 733 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:28,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:28,352 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:28,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:28,590 INFO L129 PetriNetUnfolder]: 47/269 cut-off events. [2022-01-19 07:19:28,591 INFO L130 PetriNetUnfolder]: For 1539/1549 co-relation queries the response was YES. [2022-01-19 07:19:28,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1179 conditions, 269 events. 47/269 cut-off events. For 1539/1549 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1051 event pairs, 23 based on Foata normal form. 3/269 useless extension candidates. Maximal degree in co-relation 1109. Up to 66 conditions per place. [2022-01-19 07:19:28,593 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 33 selfloop transitions, 7 changer transitions 33/128 dead transitions. [2022-01-19 07:19:28,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 128 transitions, 997 flow [2022-01-19 07:19:28,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:19:28,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:19:28,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1199 transitions. [2022-01-19 07:19:28,595 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6530501089324618 [2022-01-19 07:19:28,595 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1199 transitions. [2022-01-19 07:19:28,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1199 transitions. [2022-01-19 07:19:28,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:28,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1199 transitions. [2022-01-19 07:19:28,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.61111111111111) internal successors, (1199), 18 states have internal predecessors, (1199), 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) [2022-01-19 07:19:28,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 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) [2022-01-19 07:19:28,598 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 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) [2022-01-19 07:19:28,598 INFO L186 Difference]: Start difference. First operand has 202 places, 113 transitions, 733 flow. Second operand 18 states and 1199 transitions. [2022-01-19 07:19:28,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 128 transitions, 997 flow [2022-01-19 07:19:28,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 128 transitions, 873 flow, removed 25 selfloop flow, removed 21 redundant places. [2022-01-19 07:19:28,609 INFO L242 Difference]: Finished difference. Result has 187 places, 93 transitions, 442 flow [2022-01-19 07:19:28,609 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=442, PETRI_PLACES=187, PETRI_TRANSITIONS=93} [2022-01-19 07:19:28,611 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 96 predicate places. [2022-01-19 07:19:28,611 INFO L470 AbstractCegarLoop]: Abstraction has has 187 places, 93 transitions, 442 flow [2022-01-19 07:19:28,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:28,612 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:28,612 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:28,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-19 07:19:28,612 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:28,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:28,612 INFO L85 PathProgramCache]: Analyzing trace with hash -642037244, now seen corresponding path program 13 times [2022-01-19 07:19:28,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:28,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384163653] [2022-01-19 07:19:28,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:28,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:28,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:28,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:28,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384163653] [2022-01-19 07:19:28,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384163653] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:28,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:28,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:28,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208550957] [2022-01-19 07:19:28,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:28,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:28,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:28,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:28,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:28,720 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:28,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 93 transitions, 442 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:28,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:28,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:28,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:28,922 INFO L129 PetriNetUnfolder]: 40/235 cut-off events. [2022-01-19 07:19:28,922 INFO L130 PetriNetUnfolder]: For 1119/1120 co-relation queries the response was YES. [2022-01-19 07:19:28,923 INFO L84 FinitePrefix]: Finished finitePrefix Result has 981 conditions, 235 events. 40/235 cut-off events. For 1119/1120 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 840 event pairs, 3 based on Foata normal form. 1/235 useless extension candidates. Maximal degree in co-relation 919. Up to 39 conditions per place. [2022-01-19 07:19:28,924 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 41 selfloop transitions, 18 changer transitions 21/135 dead transitions. [2022-01-19 07:19:28,924 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 135 transitions, 1035 flow [2022-01-19 07:19:28,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 07:19:28,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 07:19:28,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1080 transitions. [2022-01-19 07:19:28,925 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6617647058823529 [2022-01-19 07:19:28,926 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1080 transitions. [2022-01-19 07:19:28,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1080 transitions. [2022-01-19 07:19:28,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:28,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1080 transitions. [2022-01-19 07:19:28,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.5) internal successors, (1080), 16 states have internal predecessors, (1080), 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) [2022-01-19 07:19:28,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 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) [2022-01-19 07:19:28,929 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 102.0) internal successors, (1734), 17 states have internal predecessors, (1734), 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) [2022-01-19 07:19:28,929 INFO L186 Difference]: Start difference. First operand has 187 places, 93 transitions, 442 flow. Second operand 16 states and 1080 transitions. [2022-01-19 07:19:28,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 135 transitions, 1035 flow [2022-01-19 07:19:28,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 135 transitions, 769 flow, removed 70 selfloop flow, removed 24 redundant places. [2022-01-19 07:19:28,934 INFO L242 Difference]: Finished difference. Result has 160 places, 103 transitions, 510 flow [2022-01-19 07:19:28,934 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=510, PETRI_PLACES=160, PETRI_TRANSITIONS=103} [2022-01-19 07:19:28,935 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 69 predicate places. [2022-01-19 07:19:28,935 INFO L470 AbstractCegarLoop]: Abstraction has has 160 places, 103 transitions, 510 flow [2022-01-19 07:19:28,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:28,936 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:28,937 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:28,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-19 07:19:28,937 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:28,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:28,937 INFO L85 PathProgramCache]: Analyzing trace with hash -2096134828, now seen corresponding path program 14 times [2022-01-19 07:19:28,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:28,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059132934] [2022-01-19 07:19:28,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:28,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:29,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:29,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:29,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059132934] [2022-01-19 07:19:29,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059132934] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:29,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:29,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:29,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567751550] [2022-01-19 07:19:29,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:29,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:29,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:29,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:29,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:29,032 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:29,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 103 transitions, 510 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:29,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:29,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:29,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:29,254 INFO L129 PetriNetUnfolder]: 39/248 cut-off events. [2022-01-19 07:19:29,254 INFO L130 PetriNetUnfolder]: For 673/674 co-relation queries the response was YES. [2022-01-19 07:19:29,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 248 events. 39/248 cut-off events. For 673/674 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 927 event pairs, 0 based on Foata normal form. 1/249 useless extension candidates. Maximal degree in co-relation 890. Up to 39 conditions per place. [2022-01-19 07:19:29,256 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 44 selfloop transitions, 23 changer transitions 31/153 dead transitions. [2022-01-19 07:19:29,256 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 153 transitions, 1173 flow [2022-01-19 07:19:29,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 07:19:29,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 07:19:29,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1339 transitions. [2022-01-19 07:19:29,257 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6563725490196078 [2022-01-19 07:19:29,257 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1339 transitions. [2022-01-19 07:19:29,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1339 transitions. [2022-01-19 07:19:29,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:29,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1339 transitions. [2022-01-19 07:19:29,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 66.95) internal successors, (1339), 20 states have internal predecessors, (1339), 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) [2022-01-19 07:19:29,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 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) [2022-01-19 07:19:29,260 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 102.0) internal successors, (2142), 21 states have internal predecessors, (2142), 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) [2022-01-19 07:19:29,260 INFO L186 Difference]: Start difference. First operand has 160 places, 103 transitions, 510 flow. Second operand 20 states and 1339 transitions. [2022-01-19 07:19:29,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 153 transitions, 1173 flow [2022-01-19 07:19:29,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 153 transitions, 1053 flow, removed 36 selfloop flow, removed 7 redundant places. [2022-01-19 07:19:29,264 INFO L242 Difference]: Finished difference. Result has 180 places, 112 transitions, 646 flow [2022-01-19 07:19:29,264 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=646, PETRI_PLACES=180, PETRI_TRANSITIONS=112} [2022-01-19 07:19:29,264 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 89 predicate places. [2022-01-19 07:19:29,265 INFO L470 AbstractCegarLoop]: Abstraction has has 180 places, 112 transitions, 646 flow [2022-01-19 07:19:29,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:29,265 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:29,265 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:29,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-19 07:19:29,265 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:29,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:29,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2128565562, now seen corresponding path program 15 times [2022-01-19 07:19:29,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:29,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533297419] [2022-01-19 07:19:29,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:29,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:29,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:29,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:29,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533297419] [2022-01-19 07:19:29,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533297419] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:29,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:29,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:29,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258137796] [2022-01-19 07:19:29,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:29,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:29,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:29,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:29,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:29,359 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:29,359 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 112 transitions, 646 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:29,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:29,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:29,360 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:29,600 INFO L129 PetriNetUnfolder]: 34/241 cut-off events. [2022-01-19 07:19:29,600 INFO L130 PetriNetUnfolder]: For 798/799 co-relation queries the response was YES. [2022-01-19 07:19:29,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 241 events. 34/241 cut-off events. For 798/799 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 881 event pairs, 3 based on Foata normal form. 1/241 useless extension candidates. Maximal degree in co-relation 912. Up to 31 conditions per place. [2022-01-19 07:19:29,602 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 42 selfloop transitions, 22 changer transitions 33/152 dead transitions. [2022-01-19 07:19:29,602 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 152 transitions, 1225 flow [2022-01-19 07:19:29,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 07:19:29,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 07:19:29,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1468 transitions. [2022-01-19 07:19:29,605 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6541889483065954 [2022-01-19 07:19:29,605 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1468 transitions. [2022-01-19 07:19:29,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1468 transitions. [2022-01-19 07:19:29,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:29,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1468 transitions. [2022-01-19 07:19:29,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 66.72727272727273) internal successors, (1468), 22 states have internal predecessors, (1468), 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) [2022-01-19 07:19:29,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 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) [2022-01-19 07:19:29,609 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 102.0) internal successors, (2346), 23 states have internal predecessors, (2346), 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) [2022-01-19 07:19:29,609 INFO L186 Difference]: Start difference. First operand has 180 places, 112 transitions, 646 flow. Second operand 22 states and 1468 transitions. [2022-01-19 07:19:29,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 152 transitions, 1225 flow [2022-01-19 07:19:29,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 152 transitions, 1064 flow, removed 64 selfloop flow, removed 12 redundant places. [2022-01-19 07:19:29,615 INFO L242 Difference]: Finished difference. Result has 189 places, 110 transitions, 618 flow [2022-01-19 07:19:29,616 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=618, PETRI_PLACES=189, PETRI_TRANSITIONS=110} [2022-01-19 07:19:29,616 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 98 predicate places. [2022-01-19 07:19:29,616 INFO L470 AbstractCegarLoop]: Abstraction has has 189 places, 110 transitions, 618 flow [2022-01-19 07:19:29,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:29,616 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:29,617 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:29,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-19 07:19:29,617 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:29,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:29,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1778296578, now seen corresponding path program 16 times [2022-01-19 07:19:29,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:29,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248176594] [2022-01-19 07:19:29,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:29,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:29,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:29,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:29,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248176594] [2022-01-19 07:19:29,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248176594] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:29,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:29,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:29,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113319261] [2022-01-19 07:19:29,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:29,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:29,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:29,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:29,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:29,715 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:29,716 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 110 transitions, 618 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:29,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:29,716 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:29,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:29,906 INFO L129 PetriNetUnfolder]: 24/194 cut-off events. [2022-01-19 07:19:29,907 INFO L130 PetriNetUnfolder]: For 603/604 co-relation queries the response was YES. [2022-01-19 07:19:29,907 INFO L84 FinitePrefix]: Finished finitePrefix Result has 773 conditions, 194 events. 24/194 cut-off events. For 603/604 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 561 event pairs, 3 based on Foata normal form. 1/194 useless extension candidates. Maximal degree in co-relation 708. Up to 30 conditions per place. [2022-01-19 07:19:29,908 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 35 selfloop transitions, 10 changer transitions 30/130 dead transitions. [2022-01-19 07:19:29,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 130 transitions, 930 flow [2022-01-19 07:19:29,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:19:29,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:19:29,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1201 transitions. [2022-01-19 07:19:29,909 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6541394335511983 [2022-01-19 07:19:29,909 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1201 transitions. [2022-01-19 07:19:29,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1201 transitions. [2022-01-19 07:19:29,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:29,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1201 transitions. [2022-01-19 07:19:29,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.72222222222223) internal successors, (1201), 18 states have internal predecessors, (1201), 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) [2022-01-19 07:19:29,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 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) [2022-01-19 07:19:29,913 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 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) [2022-01-19 07:19:29,913 INFO L186 Difference]: Start difference. First operand has 189 places, 110 transitions, 618 flow. Second operand 18 states and 1201 transitions. [2022-01-19 07:19:29,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 130 transitions, 930 flow [2022-01-19 07:19:29,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 130 transitions, 811 flow, removed 35 selfloop flow, removed 20 redundant places. [2022-01-19 07:19:29,918 INFO L242 Difference]: Finished difference. Result has 179 places, 95 transitions, 426 flow [2022-01-19 07:19:29,918 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=426, PETRI_PLACES=179, PETRI_TRANSITIONS=95} [2022-01-19 07:19:29,919 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 88 predicate places. [2022-01-19 07:19:29,919 INFO L470 AbstractCegarLoop]: Abstraction has has 179 places, 95 transitions, 426 flow [2022-01-19 07:19:29,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:29,919 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:29,919 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:29,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-19 07:19:29,920 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:29,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:29,920 INFO L85 PathProgramCache]: Analyzing trace with hash 2002258780, now seen corresponding path program 17 times [2022-01-19 07:19:29,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:29,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714742731] [2022-01-19 07:19:29,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:29,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:30,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:30,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:30,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714742731] [2022-01-19 07:19:30,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714742731] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:30,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:30,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:30,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242377837] [2022-01-19 07:19:30,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:30,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:30,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:30,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:30,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:30,015 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:30,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 95 transitions, 426 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:30,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:30,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:30,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:30,250 INFO L129 PetriNetUnfolder]: 29/201 cut-off events. [2022-01-19 07:19:30,250 INFO L130 PetriNetUnfolder]: For 652/653 co-relation queries the response was YES. [2022-01-19 07:19:30,251 INFO L84 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 201 events. 29/201 cut-off events. For 652/653 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 590 event pairs, 4 based on Foata normal form. 1/200 useless extension candidates. Maximal degree in co-relation 731. Up to 30 conditions per place. [2022-01-19 07:19:30,252 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 33 selfloop transitions, 20 changer transitions 23/131 dead transitions. [2022-01-19 07:19:30,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 131 transitions, 918 flow [2022-01-19 07:19:30,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:19:30,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:19:30,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1206 transitions. [2022-01-19 07:19:30,253 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2022-01-19 07:19:30,254 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1206 transitions. [2022-01-19 07:19:30,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1206 transitions. [2022-01-19 07:19:30,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:30,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1206 transitions. [2022-01-19 07:19:30,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.0) internal successors, (1206), 18 states have internal predecessors, (1206), 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) [2022-01-19 07:19:30,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 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) [2022-01-19 07:19:30,257 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 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) [2022-01-19 07:19:30,257 INFO L186 Difference]: Start difference. First operand has 179 places, 95 transitions, 426 flow. Second operand 18 states and 1206 transitions. [2022-01-19 07:19:30,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 131 transitions, 918 flow [2022-01-19 07:19:30,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 131 transitions, 766 flow, removed 28 selfloop flow, removed 17 redundant places. [2022-01-19 07:19:30,262 INFO L242 Difference]: Finished difference. Result has 165 places, 104 transitions, 535 flow [2022-01-19 07:19:30,262 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=535, PETRI_PLACES=165, PETRI_TRANSITIONS=104} [2022-01-19 07:19:30,262 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 74 predicate places. [2022-01-19 07:19:30,262 INFO L470 AbstractCegarLoop]: Abstraction has has 165 places, 104 transitions, 535 flow [2022-01-19 07:19:30,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:30,263 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:30,263 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:30,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-19 07:19:30,263 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:30,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:30,265 INFO L85 PathProgramCache]: Analyzing trace with hash -445289574, now seen corresponding path program 18 times [2022-01-19 07:19:30,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:30,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183307340] [2022-01-19 07:19:30,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:30,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:30,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:30,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:30,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183307340] [2022-01-19 07:19:30,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183307340] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:30,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:30,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:30,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493033798] [2022-01-19 07:19:30,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:30,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:30,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:30,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:30,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:30,355 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:30,356 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 104 transitions, 535 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:30,356 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:30,356 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:30,356 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:30,571 INFO L129 PetriNetUnfolder]: 25/203 cut-off events. [2022-01-19 07:19:30,571 INFO L130 PetriNetUnfolder]: For 442/443 co-relation queries the response was YES. [2022-01-19 07:19:30,572 INFO L84 FinitePrefix]: Finished finitePrefix Result has 735 conditions, 203 events. 25/203 cut-off events. For 442/443 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 598 event pairs, 0 based on Foata normal form. 1/204 useless extension candidates. Maximal degree in co-relation 683. Up to 30 conditions per place. [2022-01-19 07:19:30,573 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 34 selfloop transitions, 22 changer transitions 24/135 dead transitions. [2022-01-19 07:19:30,573 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 135 transitions, 959 flow [2022-01-19 07:19:30,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 07:19:30,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 07:19:30,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1142 transitions. [2022-01-19 07:19:30,574 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6585928489042676 [2022-01-19 07:19:30,574 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1142 transitions. [2022-01-19 07:19:30,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1142 transitions. [2022-01-19 07:19:30,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:30,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1142 transitions. [2022-01-19 07:19:30,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.17647058823529) internal successors, (1142), 17 states have internal predecessors, (1142), 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) [2022-01-19 07:19:30,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 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) [2022-01-19 07:19:30,577 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 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) [2022-01-19 07:19:30,577 INFO L186 Difference]: Start difference. First operand has 165 places, 104 transitions, 535 flow. Second operand 17 states and 1142 transitions. [2022-01-19 07:19:30,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 135 transitions, 959 flow [2022-01-19 07:19:30,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 135 transitions, 876 flow, removed 37 selfloop flow, removed 6 redundant places. [2022-01-19 07:19:30,582 INFO L242 Difference]: Finished difference. Result has 176 places, 108 transitions, 615 flow [2022-01-19 07:19:30,582 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=615, PETRI_PLACES=176, PETRI_TRANSITIONS=108} [2022-01-19 07:19:30,584 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 85 predicate places. [2022-01-19 07:19:30,584 INFO L470 AbstractCegarLoop]: Abstraction has has 176 places, 108 transitions, 615 flow [2022-01-19 07:19:30,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:30,584 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:30,584 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:30,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-19 07:19:30,585 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:30,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:30,585 INFO L85 PathProgramCache]: Analyzing trace with hash -453206120, now seen corresponding path program 19 times [2022-01-19 07:19:30,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:30,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256451841] [2022-01-19 07:19:30,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:30,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:30,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:30,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:30,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256451841] [2022-01-19 07:19:30,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256451841] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:30,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:30,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:30,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624985102] [2022-01-19 07:19:30,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:30,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:30,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:30,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:30,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:30,674 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:30,675 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 108 transitions, 615 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:30,675 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:30,675 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:30,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:30,881 INFO L129 PetriNetUnfolder]: 19/188 cut-off events. [2022-01-19 07:19:30,881 INFO L130 PetriNetUnfolder]: For 386/387 co-relation queries the response was YES. [2022-01-19 07:19:30,882 INFO L84 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 188 events. 19/188 cut-off events. For 386/387 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 520 event pairs, 0 based on Foata normal form. 1/189 useless extension candidates. Maximal degree in co-relation 637. Up to 30 conditions per place. [2022-01-19 07:19:30,882 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 32 selfloop transitions, 13 changer transitions 28/128 dead transitions. [2022-01-19 07:19:30,882 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 128 transitions, 923 flow [2022-01-19 07:19:30,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:19:30,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:19:30,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1201 transitions. [2022-01-19 07:19:30,884 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6541394335511983 [2022-01-19 07:19:30,884 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1201 transitions. [2022-01-19 07:19:30,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1201 transitions. [2022-01-19 07:19:30,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:30,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1201 transitions. [2022-01-19 07:19:30,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.72222222222223) internal successors, (1201), 18 states have internal predecessors, (1201), 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) [2022-01-19 07:19:30,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 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) [2022-01-19 07:19:30,887 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 102.0) internal successors, (1938), 19 states have internal predecessors, (1938), 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) [2022-01-19 07:19:30,888 INFO L186 Difference]: Start difference. First operand has 176 places, 108 transitions, 615 flow. Second operand 18 states and 1201 transitions. [2022-01-19 07:19:30,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 128 transitions, 923 flow [2022-01-19 07:19:30,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 128 transitions, 828 flow, removed 27 selfloop flow, removed 9 redundant places. [2022-01-19 07:19:30,893 INFO L242 Difference]: Finished difference. Result has 184 places, 99 transitions, 487 flow [2022-01-19 07:19:30,893 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=487, PETRI_PLACES=184, PETRI_TRANSITIONS=99} [2022-01-19 07:19:30,893 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 93 predicate places. [2022-01-19 07:19:30,893 INFO L470 AbstractCegarLoop]: Abstraction has has 184 places, 99 transitions, 487 flow [2022-01-19 07:19:30,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:30,893 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:19:30,894 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:19:30,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-19 07:19:30,895 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:19:30,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:19:30,895 INFO L85 PathProgramCache]: Analyzing trace with hash 542281632, now seen corresponding path program 20 times [2022-01-19 07:19:30,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:19:30,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747731028] [2022-01-19 07:19:30,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:19:30,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:19:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:19:30,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:19:30,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:19:30,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747731028] [2022-01-19 07:19:30,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747731028] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:19:30,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:19:30,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:19:30,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677167002] [2022-01-19 07:19:30,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:19:30,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:19:30,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:19:30,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:19:30,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:19:30,989 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2022-01-19 07:19:30,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 99 transitions, 487 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:30,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:19:30,990 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2022-01-19 07:19:30,990 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:19:31,152 INFO L129 PetriNetUnfolder]: 11/117 cut-off events. [2022-01-19 07:19:31,152 INFO L130 PetriNetUnfolder]: For 230/231 co-relation queries the response was YES. [2022-01-19 07:19:31,153 INFO L84 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 117 events. 11/117 cut-off events. For 230/231 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 205 event pairs, 0 based on Foata normal form. 1/118 useless extension candidates. Maximal degree in co-relation 381. Up to 12 conditions per place. [2022-01-19 07:19:31,153 INFO L132 encePairwiseOnDemand]: 89/102 looper letters, 0 selfloop transitions, 0 changer transitions 89/89 dead transitions. [2022-01-19 07:19:31,153 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 89 transitions, 585 flow [2022-01-19 07:19:31,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 07:19:31,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 07:19:31,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1111 transitions. [2022-01-19 07:19:31,154 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6407151095732411 [2022-01-19 07:19:31,154 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1111 transitions. [2022-01-19 07:19:31,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1111 transitions. [2022-01-19 07:19:31,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:19:31,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1111 transitions. [2022-01-19 07:19:31,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 65.3529411764706) internal successors, (1111), 17 states have internal predecessors, (1111), 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) [2022-01-19 07:19:31,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 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) [2022-01-19 07:19:31,157 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 102.0) internal successors, (1836), 18 states have internal predecessors, (1836), 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) [2022-01-19 07:19:31,157 INFO L186 Difference]: Start difference. First operand has 184 places, 99 transitions, 487 flow. Second operand 17 states and 1111 transitions. [2022-01-19 07:19:31,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 89 transitions, 585 flow [2022-01-19 07:19:31,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 89 transitions, 484 flow, removed 22 selfloop flow, removed 21 redundant places. [2022-01-19 07:19:31,160 INFO L242 Difference]: Finished difference. Result has 147 places, 0 transitions, 0 flow [2022-01-19 07:19:31,160 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=0, PETRI_PLACES=147, PETRI_TRANSITIONS=0} [2022-01-19 07:19:31,160 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 56 predicate places. [2022-01-19 07:19:31,160 INFO L470 AbstractCegarLoop]: Abstraction has has 147 places, 0 transitions, 0 flow [2022-01-19 07:19:31,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2022-01-19 07:19:31,162 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-19 07:19:31,163 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-19 07:19:31,163 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-19 07:19:31,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-19 07:19:31,166 INFO L732 BasicCegarLoop]: Path program histogram: [20, 20, 2, 2, 2, 1] [2022-01-19 07:19:31,167 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 07:19:31,168 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 07:19:31,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 07:19:31 BasicIcfg [2022-01-19 07:19:31,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 07:19:31,171 INFO L158 Benchmark]: Toolchain (without parser) took 18798.55ms. Allocated memory was 362.8MB in the beginning and 572.5MB in the end (delta: 209.7MB). Free memory was 309.0MB in the beginning and 309.6MB in the end (delta: -676.8kB). Peak memory consumption was 209.8MB. Max. memory is 16.0GB. [2022-01-19 07:19:31,171 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 362.8MB. Free memory is still 325.1MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 07:19:31,171 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.62ms. Allocated memory is still 362.8MB. Free memory was 308.8MB in the beginning and 330.1MB in the end (delta: -21.2MB). Peak memory consumption was 10.1MB. Max. memory is 16.0GB. [2022-01-19 07:19:31,171 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.83ms. Allocated memory is still 362.8MB. Free memory was 330.1MB in the beginning and 328.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 07:19:31,172 INFO L158 Benchmark]: Boogie Preprocessor took 20.87ms. Allocated memory is still 362.8MB. Free memory was 328.0MB in the beginning and 326.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 07:19:31,172 INFO L158 Benchmark]: RCFGBuilder took 268.32ms. Allocated memory is still 362.8MB. Free memory was 326.9MB in the beginning and 314.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-19 07:19:31,172 INFO L158 Benchmark]: TraceAbstraction took 18274.71ms. Allocated memory was 362.8MB in the beginning and 572.5MB in the end (delta: 209.7MB). Free memory was 313.3MB in the beginning and 309.6MB in the end (delta: 3.7MB). Peak memory consumption was 214.4MB. Max. memory is 16.0GB. [2022-01-19 07:19:31,173 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 362.8MB. Free memory is still 325.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 195.62ms. Allocated memory is still 362.8MB. Free memory was 308.8MB in the beginning and 330.1MB in the end (delta: -21.2MB). Peak memory consumption was 10.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 32.83ms. Allocated memory is still 362.8MB. Free memory was 330.1MB in the beginning and 328.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.87ms. Allocated memory is still 362.8MB. Free memory was 328.0MB in the beginning and 326.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 268.32ms. Allocated memory is still 362.8MB. Free memory was 326.9MB in the beginning and 314.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 18274.71ms. Allocated memory was 362.8MB in the beginning and 572.5MB in the end (delta: 209.7MB). Free memory was 313.3MB in the beginning and 309.6MB in the end (delta: 3.7MB). Peak memory consumption was 214.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 69]: 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 with 1 thread instances CFG has 5 procedures, 122 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.1s, OverallIterations: 47, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 12.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1863 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1863 mSDsluCounter, 9092 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8926 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7632 IncrementalHoareTripleChecker+Invalid, 7665 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 1763 mSDtfsCounter, 7632 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1016 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 871 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3592 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1237occurred in iteration=18, InterpolantAutomatonStates: 803, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 3611 NumberOfCodeBlocks, 3611 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 3564 ConstructedInterpolants, 0 QuantifiedInterpolants, 14424 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 47 InterpolantComputations, 47 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! [2022-01-19 07:19:31,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...