/usr/bin/java -Xmx8000000000 -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.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-file-item-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-3902331-m [2022-09-20 22:45:24,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 22:45:24,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 22:45:24,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 22:45:24,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 22:45:24,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 22:45:24,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 22:45:24,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 22:45:24,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 22:45:24,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 22:45:24,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 22:45:24,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 22:45:24,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 22:45:24,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 22:45:24,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 22:45:24,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 22:45:24,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 22:45:24,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 22:45:24,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 22:45:24,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 22:45:24,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 22:45:24,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 22:45:24,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 22:45:24,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 22:45:24,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 22:45:24,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 22:45:24,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 22:45:24,841 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 22:45:24,842 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 22:45:24,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 22:45:24,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 22:45:24,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 22:45:24,844 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 22:45:24,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 22:45:24,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 22:45:24,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 22:45:24,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 22:45:24,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 22:45:24,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 22:45:24,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 22:45:24,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 22:45:24,852 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.epf [2022-09-20 22:45:24,882 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 22:45:24,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 22:45:24,883 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 22:45:24,883 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 22:45:24,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 22:45:24,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 22:45:24,883 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 22:45:24,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 22:45:24,884 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 22:45:24,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 22:45:24,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 22:45:24,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 22:45:24,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 22:45:24,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 22:45:24,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 22:45:24,885 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 22:45:24,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 22:45:24,885 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 22:45:24,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 22:45:24,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 22:45:24,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 22:45:24,885 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 22:45:24,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 22:45:24,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:45:24,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 22:45:24,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 22:45:24,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 22:45:24,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 22:45:24,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 22:45:24,887 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 22:45:24,887 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 22:45:24,887 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 22:45:25,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 22:45:25,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 22:45:25,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 22:45:25,091 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 22:45:25,092 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 22:45:25,093 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-file-item-subst.wvr.c [2022-09-20 22:45:25,141 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda73b523/978d4988050f4d1cb0b6a455a146dee0/FLAG81ca33aa1 [2022-09-20 22:45:25,457 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 22:45:25,458 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-file-item-subst.wvr.c [2022-09-20 22:45:25,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda73b523/978d4988050f4d1cb0b6a455a146dee0/FLAG81ca33aa1 [2022-09-20 22:45:25,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda73b523/978d4988050f4d1cb0b6a455a146dee0 [2022-09-20 22:45:25,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 22:45:25,883 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 22:45:25,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 22:45:25,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 22:45:25,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 22:45:25,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:45:25" (1/1) ... [2022-09-20 22:45:25,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@619d6066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:45:25, skipping insertion in model container [2022-09-20 22:45:25,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:45:25" (1/1) ... [2022-09-20 22:45:25,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 22:45:25,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 22:45:26,085 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-file-item-subst.wvr.c[3015,3028] [2022-09-20 22:45:26,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:45:26,100 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 22:45:26,119 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-file-item-subst.wvr.c[3015,3028] [2022-09-20 22:45:26,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:45:26,133 INFO L208 MainTranslator]: Completed translation [2022-09-20 22:45:26,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:45:26 WrapperNode [2022-09-20 22:45:26,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 22:45:26,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 22:45:26,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 22:45:26,136 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 22:45:26,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:45:26" (1/1) ... [2022-09-20 22:45:26,156 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:45:26" (1/1) ... [2022-09-20 22:45:26,186 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 221 [2022-09-20 22:45:26,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 22:45:26,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 22:45:26,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 22:45:26,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 22:45:26,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:45:26" (1/1) ... [2022-09-20 22:45:26,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:45:26" (1/1) ... [2022-09-20 22:45:26,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:45:26" (1/1) ... [2022-09-20 22:45:26,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:45:26" (1/1) ... [2022-09-20 22:45:26,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:45:26" (1/1) ... [2022-09-20 22:45:26,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:45:26" (1/1) ... [2022-09-20 22:45:26,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:45:26" (1/1) ... [2022-09-20 22:45:26,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 22:45:26,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 22:45:26,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 22:45:26,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 22:45:26,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:45:26" (1/1) ... [2022-09-20 22:45:26,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:45:26,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:45:26,269 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) [2022-09-20 22:45:26,291 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 [2022-09-20 22:45:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 22:45:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 22:45:26,300 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 22:45:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 22:45:26,300 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 22:45:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 22:45:26,300 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 22:45:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 22:45:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 22:45:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 22:45:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 22:45:26,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 22:45:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 22:45:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 22:45:26,302 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 22:45:26,397 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 22:45:26,398 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 22:45:26,723 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 22:45:26,731 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 22:45:26,732 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-20 22:45:26,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:45:26 BoogieIcfgContainer [2022-09-20 22:45:26,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 22:45:26,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 22:45:26,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 22:45:26,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 22:45:26,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 10:45:25" (1/3) ... [2022-09-20 22:45:26,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468d139c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:45:26, skipping insertion in model container [2022-09-20 22:45:26,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:45:26" (2/3) ... [2022-09-20 22:45:26,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468d139c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:45:26, skipping insertion in model container [2022-09-20 22:45:26,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:45:26" (3/3) ... [2022-09-20 22:45:26,747 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-subst.wvr.c [2022-09-20 22:45:26,759 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 22:45:26,759 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 22:45:26,760 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 22:45:26,846 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-20 22:45:26,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 270 places, 286 transitions, 596 flow [2022-09-20 22:45:26,968 INFO L130 PetriNetUnfolder]: 26/283 cut-off events. [2022-09-20 22:45:26,968 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 22:45:26,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 283 events. 26/283 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 737 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 199. Up to 2 conditions per place. [2022-09-20 22:45:26,977 INFO L82 GeneralOperation]: Start removeDead. Operand has 270 places, 286 transitions, 596 flow [2022-09-20 22:45:26,989 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 272 transitions, 562 flow [2022-09-20 22:45:27,004 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 22:45:27,011 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2a2da3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 22:45:27,011 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-09-20 22:45:27,080 INFO L130 PetriNetUnfolder]: 26/271 cut-off events. [2022-09-20 22:45:27,080 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 22:45:27,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:45:27,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:45:27,081 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:45:27,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:45:27,086 INFO L85 PathProgramCache]: Analyzing trace with hash -639219387, now seen corresponding path program 1 times [2022-09-20 22:45:27,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:45:27,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089056673] [2022-09-20 22:45:27,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:45:27,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:45:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:45:27,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:45:27,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:45:27,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089056673] [2022-09-20 22:45:27,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089056673] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:45:27,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:45:27,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:45:27,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349769705] [2022-09-20 22:45:27,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:45:27,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:45:27,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:45:27,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:45:27,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:45:27,398 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 286 [2022-09-20 22:45:27,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 272 transitions, 562 flow. Second operand has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:27,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:45:27,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 286 [2022-09-20 22:45:27,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:45:27,560 INFO L130 PetriNetUnfolder]: 87/962 cut-off events. [2022-09-20 22:45:27,560 INFO L131 PetriNetUnfolder]: For 50/54 co-relation queries the response was YES. [2022-09-20 22:45:27,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 962 events. 87/962 cut-off events. For 50/54 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 6563 event pairs, 8 based on Foata normal form. 46/891 useless extension candidates. Maximal degree in co-relation 859. Up to 28 conditions per place. [2022-09-20 22:45:27,584 INFO L137 encePairwiseOnDemand]: 274/286 looper letters, 17 selfloop transitions, 2 changer transitions 2/271 dead transitions. [2022-09-20 22:45:27,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 271 transitions, 613 flow [2022-09-20 22:45:27,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:45:27,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:45:27,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 832 transitions. [2022-09-20 22:45:27,603 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9696969696969697 [2022-09-20 22:45:27,604 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 832 transitions. [2022-09-20 22:45:27,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 832 transitions. [2022-09-20 22:45:27,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:45:27,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 832 transitions. [2022-09-20 22:45:27,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:27,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 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) [2022-09-20 22:45:27,621 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 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) [2022-09-20 22:45:27,622 INFO L175 Difference]: Start difference. First operand has 256 places, 272 transitions, 562 flow. Second operand 3 states and 832 transitions. [2022-09-20 22:45:27,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 271 transitions, 613 flow [2022-09-20 22:45:27,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 271 transitions, 591 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-20 22:45:27,633 INFO L231 Difference]: Finished difference. Result has 254 places, 264 transitions, 550 flow [2022-09-20 22:45:27,635 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=550, PETRI_PLACES=254, PETRI_TRANSITIONS=264} [2022-09-20 22:45:27,638 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, -2 predicate places. [2022-09-20 22:45:27,639 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 264 transitions, 550 flow [2022-09-20 22:45:27,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:27,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:45:27,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:45:27,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 22:45:27,641 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:45:27,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:45:27,642 INFO L85 PathProgramCache]: Analyzing trace with hash -181771483, now seen corresponding path program 1 times [2022-09-20 22:45:27,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:45:27,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289818751] [2022-09-20 22:45:27,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:45:27,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:45:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:45:27,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:45:27,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:45:27,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289818751] [2022-09-20 22:45:27,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289818751] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:45:27,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:45:27,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:45:27,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456351910] [2022-09-20 22:45:27,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:45:27,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:45:27,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:45:27,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:45:27,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:45:27,734 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 286 [2022-09-20 22:45:27,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 264 transitions, 550 flow. Second operand has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:27,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:45:27,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 286 [2022-09-20 22:45:27,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:45:27,851 INFO L130 PetriNetUnfolder]: 60/699 cut-off events. [2022-09-20 22:45:27,852 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-09-20 22:45:27,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 780 conditions, 699 events. 60/699 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3929 event pairs, 7 based on Foata normal form. 5/635 useless extension candidates. Maximal degree in co-relation 583. Up to 23 conditions per place. [2022-09-20 22:45:27,863 INFO L137 encePairwiseOnDemand]: 280/286 looper letters, 17 selfloop transitions, 4 changer transitions 0/271 dead transitions. [2022-09-20 22:45:27,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 271 transitions, 615 flow [2022-09-20 22:45:27,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:45:27,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:45:27,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 816 transitions. [2022-09-20 22:45:27,866 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.951048951048951 [2022-09-20 22:45:27,866 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 816 transitions. [2022-09-20 22:45:27,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 816 transitions. [2022-09-20 22:45:27,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:45:27,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 816 transitions. [2022-09-20 22:45:27,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:27,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 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) [2022-09-20 22:45:27,869 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 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) [2022-09-20 22:45:27,869 INFO L175 Difference]: Start difference. First operand has 254 places, 264 transitions, 550 flow. Second operand 3 states and 816 transitions. [2022-09-20 22:45:27,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 271 transitions, 615 flow [2022-09-20 22:45:27,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 271 transitions, 613 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 22:45:27,875 INFO L231 Difference]: Finished difference. Result has 255 places, 266 transitions, 580 flow [2022-09-20 22:45:27,876 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=580, PETRI_PLACES=255, PETRI_TRANSITIONS=266} [2022-09-20 22:45:27,876 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, -1 predicate places. [2022-09-20 22:45:27,876 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 266 transitions, 580 flow [2022-09-20 22:45:27,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:27,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:45:27,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:45:27,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 22:45:27,878 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:45:27,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:45:27,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1840221051, now seen corresponding path program 1 times [2022-09-20 22:45:27,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:45:27,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978340006] [2022-09-20 22:45:27,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:45:27,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:45:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:45:27,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:45:27,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:45:27,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978340006] [2022-09-20 22:45:27,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978340006] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:45:27,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:45:27,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:45:27,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881153312] [2022-09-20 22:45:27,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:45:27,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:45:27,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:45:27,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:45:27,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:45:27,974 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 286 [2022-09-20 22:45:27,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 266 transitions, 580 flow. Second operand has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:27,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:45:27,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 286 [2022-09-20 22:45:27,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:45:28,133 INFO L130 PetriNetUnfolder]: 86/1129 cut-off events. [2022-09-20 22:45:28,134 INFO L131 PetriNetUnfolder]: For 41/48 co-relation queries the response was YES. [2022-09-20 22:45:28,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1246 conditions, 1129 events. 86/1129 cut-off events. For 41/48 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 7567 event pairs, 12 based on Foata normal form. 0/1021 useless extension candidates. Maximal degree in co-relation 675. Up to 45 conditions per place. [2022-09-20 22:45:28,149 INFO L137 encePairwiseOnDemand]: 280/286 looper letters, 19 selfloop transitions, 3 changer transitions 0/274 dead transitions. [2022-09-20 22:45:28,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 274 transitions, 645 flow [2022-09-20 22:45:28,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:45:28,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:45:28,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 814 transitions. [2022-09-20 22:45:28,152 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2022-09-20 22:45:28,152 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 814 transitions. [2022-09-20 22:45:28,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 814 transitions. [2022-09-20 22:45:28,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:45:28,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 814 transitions. [2022-09-20 22:45:28,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.3333333333333) internal successors, (814), 3 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:28,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 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) [2022-09-20 22:45:28,156 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 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) [2022-09-20 22:45:28,156 INFO L175 Difference]: Start difference. First operand has 255 places, 266 transitions, 580 flow. Second operand 3 states and 814 transitions. [2022-09-20 22:45:28,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 274 transitions, 645 flow [2022-09-20 22:45:28,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 274 transitions, 633 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-09-20 22:45:28,162 INFO L231 Difference]: Finished difference. Result has 257 places, 269 transitions, 598 flow [2022-09-20 22:45:28,162 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=598, PETRI_PLACES=257, PETRI_TRANSITIONS=269} [2022-09-20 22:45:28,164 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 1 predicate places. [2022-09-20 22:45:28,164 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 269 transitions, 598 flow [2022-09-20 22:45:28,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:28,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:45:28,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:45:28,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 22:45:28,165 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:45:28,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:45:28,166 INFO L85 PathProgramCache]: Analyzing trace with hash 386802427, now seen corresponding path program 1 times [2022-09-20 22:45:28,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:45:28,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752797316] [2022-09-20 22:45:28,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:45:28,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:45:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:45:28,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:45:28,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:45:28,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752797316] [2022-09-20 22:45:28,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752797316] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:45:28,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:45:28,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:45:28,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694954788] [2022-09-20 22:45:28,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:45:28,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:45:28,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:45:28,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:45:28,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:45:28,258 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 286 [2022-09-20 22:45:28,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 269 transitions, 598 flow. Second operand has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:28,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:45:28,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 286 [2022-09-20 22:45:28,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:45:28,675 INFO L130 PetriNetUnfolder]: 304/3815 cut-off events. [2022-09-20 22:45:28,676 INFO L131 PetriNetUnfolder]: For 133/170 co-relation queries the response was YES. [2022-09-20 22:45:28,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4208 conditions, 3815 events. 304/3815 cut-off events. For 133/170 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 39929 event pairs, 50 based on Foata normal form. 0/3433 useless extension candidates. Maximal degree in co-relation 2209. Up to 201 conditions per place. [2022-09-20 22:45:28,702 INFO L137 encePairwiseOnDemand]: 276/286 looper letters, 18 selfloop transitions, 6 changer transitions 0/277 dead transitions. [2022-09-20 22:45:28,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 277 transitions, 666 flow [2022-09-20 22:45:28,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:45:28,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:45:28,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 811 transitions. [2022-09-20 22:45:28,704 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9452214452214452 [2022-09-20 22:45:28,704 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 811 transitions. [2022-09-20 22:45:28,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 811 transitions. [2022-09-20 22:45:28,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:45:28,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 811 transitions. [2022-09-20 22:45:28,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:28,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 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) [2022-09-20 22:45:28,708 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 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) [2022-09-20 22:45:28,708 INFO L175 Difference]: Start difference. First operand has 257 places, 269 transitions, 598 flow. Second operand 3 states and 811 transitions. [2022-09-20 22:45:28,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 277 transitions, 666 flow [2022-09-20 22:45:28,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 277 transitions, 663 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 22:45:28,714 INFO L231 Difference]: Finished difference. Result has 260 places, 273 transitions, 643 flow [2022-09-20 22:45:28,714 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=643, PETRI_PLACES=260, PETRI_TRANSITIONS=273} [2022-09-20 22:45:28,715 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 4 predicate places. [2022-09-20 22:45:28,715 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 273 transitions, 643 flow [2022-09-20 22:45:28,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:28,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:45:28,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:45:28,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 22:45:28,720 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:45:28,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:45:28,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1419952075, now seen corresponding path program 1 times [2022-09-20 22:45:28,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:45:28,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376982718] [2022-09-20 22:45:28,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:45:28,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:45:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:45:28,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:45:28,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:45:28,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376982718] [2022-09-20 22:45:28,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376982718] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:45:28,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:45:28,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:45:28,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565315452] [2022-09-20 22:45:28,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:45:28,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:45:28,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:45:28,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:45:28,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:45:28,855 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 286 [2022-09-20 22:45:28,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 273 transitions, 643 flow. Second operand has 7 states, 7 states have (on average 255.85714285714286) internal successors, (1791), 7 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:28,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:45:28,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 286 [2022-09-20 22:45:28,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:45:29,175 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([863] thread3EXIT-->L80-2: Formula: (and (= 0 v_thread3Thread1of1ForFork1_thidvar3_4) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem39#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread3Thread1of1ForFork1_thidvar0_4) (= 0 v_thread3Thread1of1ForFork1_thidvar1_4) (= 0 v_thread3Thread1of1ForFork1_thidvar2_4)) InVars {thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, ULTIMATE.start_main_#t~mem39#1=|v_ULTIMATE.start_main_#t~mem39#1_5|, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} OutVars{thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, ULTIMATE.start_main_#t~mem39#1=|v_ULTIMATE.start_main_#t~mem39#1_5|, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} AuxVars[] AssignedVars[][275], [Black: 285#true, 297#true, Black: 273#true, Black: 291#true, 16#L80-2true, Black: 281#(= (+ ~is_null_0~0 (* (- 256) (div ~is_null_0~0 256))) 0), 275#(not (= (+ ~is_null_0~0 (* (- 256) (div ~is_null_0~0 256))) 0)), 293#(= (+ (* (- 256) (div ~is_null_6~0 256)) ~is_null_6~0) 0), 287#(not (= 0 (+ (* (div ~is_null_3~0 256) (- 256)) ~is_null_3~0)))]) [2022-09-20 22:45:29,176 INFO L383 tUnfolder$Statistics]: this new event has 116 ancestors and is cut-off event [2022-09-20 22:45:29,176 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-09-20 22:45:29,176 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-09-20 22:45:29,176 INFO L386 tUnfolder$Statistics]: existing Event has 116 ancestors and is cut-off event [2022-09-20 22:45:29,176 INFO L381 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([863] thread3EXIT-->L80-2: Formula: (and (= 0 v_thread3Thread1of1ForFork1_thidvar3_4) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem39#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread3Thread1of1ForFork1_thidvar0_4) (= 0 v_thread3Thread1of1ForFork1_thidvar1_4) (= 0 v_thread3Thread1of1ForFork1_thidvar2_4)) InVars {thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, ULTIMATE.start_main_#t~mem39#1=|v_ULTIMATE.start_main_#t~mem39#1_5|, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} OutVars{thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, ULTIMATE.start_main_#t~mem39#1=|v_ULTIMATE.start_main_#t~mem39#1_5|, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} AuxVars[] AssignedVars[][275], [Black: 285#true, 297#true, Black: 273#true, 16#L80-2true, Black: 291#true, Black: 281#(= (+ ~is_null_0~0 (* (- 256) (div ~is_null_0~0 256))) 0), 275#(not (= (+ ~is_null_0~0 (* (- 256) (div ~is_null_0~0 256))) 0)), 293#(= (+ (* (- 256) (div ~is_null_6~0 256)) ~is_null_6~0) 0), 287#(not (= 0 (+ (* (div ~is_null_3~0 256) (- 256)) ~is_null_3~0)))]) [2022-09-20 22:45:29,176 INFO L383 tUnfolder$Statistics]: this new event has 116 ancestors and is cut-off event [2022-09-20 22:45:29,176 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-09-20 22:45:29,176 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-09-20 22:45:29,176 INFO L386 tUnfolder$Statistics]: existing Event has 116 ancestors and is cut-off event [2022-09-20 22:45:29,176 INFO L386 tUnfolder$Statistics]: existing Event has 116 ancestors and is cut-off event [2022-09-20 22:45:29,180 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([863] thread3EXIT-->L80-2: Formula: (and (= 0 v_thread3Thread1of1ForFork1_thidvar3_4) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem39#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread3Thread1of1ForFork1_thidvar0_4) (= 0 v_thread3Thread1of1ForFork1_thidvar1_4) (= 0 v_thread3Thread1of1ForFork1_thidvar2_4)) InVars {thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, ULTIMATE.start_main_#t~mem39#1=|v_ULTIMATE.start_main_#t~mem39#1_5|, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} OutVars{thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, ULTIMATE.start_main_#t~mem39#1=|v_ULTIMATE.start_main_#t~mem39#1_5|, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} AuxVars[] AssignedVars[][275], [Black: 285#true, 297#true, Black: 275#(not (= (+ ~is_null_0~0 (* (- 256) (div ~is_null_0~0 256))) 0)), 16#L80-2true, Black: 291#true, Black: 279#true, 293#(= (+ (* (- 256) (div ~is_null_6~0 256)) ~is_null_6~0) 0), 287#(not (= 0 (+ (* (div ~is_null_3~0 256) (- 256)) ~is_null_3~0)))]) [2022-09-20 22:45:29,180 INFO L383 tUnfolder$Statistics]: this new event has 124 ancestors and is cut-off event [2022-09-20 22:45:29,180 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-09-20 22:45:29,180 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-09-20 22:45:29,180 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-09-20 22:45:29,181 INFO L381 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([863] thread3EXIT-->L80-2: Formula: (and (= 0 v_thread3Thread1of1ForFork1_thidvar3_4) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem39#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread3Thread1of1ForFork1_thidvar0_4) (= 0 v_thread3Thread1of1ForFork1_thidvar1_4) (= 0 v_thread3Thread1of1ForFork1_thidvar2_4)) InVars {thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, ULTIMATE.start_main_#t~mem39#1=|v_ULTIMATE.start_main_#t~mem39#1_5|, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} OutVars{thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, ULTIMATE.start_main_#t~mem39#1=|v_ULTIMATE.start_main_#t~mem39#1_5|, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} AuxVars[] AssignedVars[][275], [Black: 285#true, 297#true, Black: 275#(not (= (+ ~is_null_0~0 (* (- 256) (div ~is_null_0~0 256))) 0)), Black: 291#true, 16#L80-2true, Black: 279#true, 293#(= (+ (* (- 256) (div ~is_null_6~0 256)) ~is_null_6~0) 0), 287#(not (= 0 (+ (* (div ~is_null_3~0 256) (- 256)) ~is_null_3~0)))]) [2022-09-20 22:45:29,181 INFO L383 tUnfolder$Statistics]: this new event has 120 ancestors and is cut-off event [2022-09-20 22:45:29,181 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-09-20 22:45:29,181 INFO L386 tUnfolder$Statistics]: existing Event has 124 ancestors and is cut-off event [2022-09-20 22:45:29,181 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-09-20 22:45:29,181 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-09-20 22:45:29,181 INFO L381 tUnfolder$Statistics]: inserting event number 6 for the transition-marking pair ([863] thread3EXIT-->L80-2: Formula: (and (= 0 v_thread3Thread1of1ForFork1_thidvar3_4) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem39#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread3Thread1of1ForFork1_thidvar0_4) (= 0 v_thread3Thread1of1ForFork1_thidvar1_4) (= 0 v_thread3Thread1of1ForFork1_thidvar2_4)) InVars {thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, ULTIMATE.start_main_#t~mem39#1=|v_ULTIMATE.start_main_#t~mem39#1_5|, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} OutVars{thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, ULTIMATE.start_main_#t~mem39#1=|v_ULTIMATE.start_main_#t~mem39#1_5|, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} AuxVars[] AssignedVars[][275], [Black: 285#true, 297#true, Black: 275#(not (= (+ ~is_null_0~0 (* (- 256) (div ~is_null_0~0 256))) 0)), Black: 291#true, 16#L80-2true, Black: 279#true, 293#(= (+ (* (- 256) (div ~is_null_6~0 256)) ~is_null_6~0) 0), 287#(not (= 0 (+ (* (div ~is_null_3~0 256) (- 256)) ~is_null_3~0)))]) [2022-09-20 22:45:29,182 INFO L383 tUnfolder$Statistics]: this new event has 120 ancestors and is cut-off event [2022-09-20 22:45:29,182 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-09-20 22:45:29,182 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-09-20 22:45:29,182 INFO L386 tUnfolder$Statistics]: existing Event has 124 ancestors and is cut-off event [2022-09-20 22:45:29,182 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-09-20 22:45:29,182 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-09-20 22:45:29,183 INFO L381 tUnfolder$Statistics]: inserting event number 7 for the transition-marking pair ([863] thread3EXIT-->L80-2: Formula: (and (= 0 v_thread3Thread1of1ForFork1_thidvar3_4) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem39#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread3Thread1of1ForFork1_thidvar0_4) (= 0 v_thread3Thread1of1ForFork1_thidvar1_4) (= 0 v_thread3Thread1of1ForFork1_thidvar2_4)) InVars {thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, ULTIMATE.start_main_#t~mem39#1=|v_ULTIMATE.start_main_#t~mem39#1_5|, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} OutVars{thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, ULTIMATE.start_main_#t~mem39#1=|v_ULTIMATE.start_main_#t~mem39#1_5|, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} AuxVars[] AssignedVars[][275], [Black: 285#true, 297#true, Black: 275#(not (= (+ ~is_null_0~0 (* (- 256) (div ~is_null_0~0 256))) 0)), Black: 291#true, 16#L80-2true, Black: 279#true, 293#(= (+ (* (- 256) (div ~is_null_6~0 256)) ~is_null_6~0) 0), 287#(not (= 0 (+ (* (div ~is_null_3~0 256) (- 256)) ~is_null_3~0)))]) [2022-09-20 22:45:29,183 INFO L383 tUnfolder$Statistics]: this new event has 124 ancestors and is cut-off event [2022-09-20 22:45:29,183 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-09-20 22:45:29,183 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-09-20 22:45:29,183 INFO L386 tUnfolder$Statistics]: existing Event has 124 ancestors and is cut-off event [2022-09-20 22:45:29,183 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-09-20 22:45:29,183 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-09-20 22:45:29,183 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-09-20 22:45:29,184 INFO L381 tUnfolder$Statistics]: inserting event number 6 for the transition-marking pair ([863] thread3EXIT-->L80-2: Formula: (and (= 0 v_thread3Thread1of1ForFork1_thidvar3_4) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem39#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread3Thread1of1ForFork1_thidvar0_4) (= 0 v_thread3Thread1of1ForFork1_thidvar1_4) (= 0 v_thread3Thread1of1ForFork1_thidvar2_4)) InVars {thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, ULTIMATE.start_main_#t~mem39#1=|v_ULTIMATE.start_main_#t~mem39#1_5|, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} OutVars{thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, ULTIMATE.start_main_#t~mem39#1=|v_ULTIMATE.start_main_#t~mem39#1_5|, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} AuxVars[] AssignedVars[][275], [Black: 285#true, 297#true, Black: 273#true, 16#L80-2true, Black: 291#true, Black: 281#(= (+ ~is_null_0~0 (* (- 256) (div ~is_null_0~0 256))) 0), 275#(not (= (+ ~is_null_0~0 (* (- 256) (div ~is_null_0~0 256))) 0)), 293#(= (+ (* (- 256) (div ~is_null_6~0 256)) ~is_null_6~0) 0), 287#(not (= 0 (+ (* (div ~is_null_3~0 256) (- 256)) ~is_null_3~0)))]) [2022-09-20 22:45:29,184 INFO L383 tUnfolder$Statistics]: this new event has 116 ancestors and is not cut-off event [2022-09-20 22:45:29,184 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is not cut-off event [2022-09-20 22:45:29,184 INFO L386 tUnfolder$Statistics]: existing Event has 116 ancestors and is not cut-off event [2022-09-20 22:45:29,185 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is not cut-off event [2022-09-20 22:45:29,185 INFO L386 tUnfolder$Statistics]: existing Event has 116 ancestors and is not cut-off event [2022-09-20 22:45:29,185 INFO L386 tUnfolder$Statistics]: existing Event has 116 ancestors and is not cut-off event [2022-09-20 22:45:29,185 INFO L381 tUnfolder$Statistics]: inserting event number 8 for the transition-marking pair ([863] thread3EXIT-->L80-2: Formula: (and (= 0 v_thread3Thread1of1ForFork1_thidvar3_4) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem39#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread3Thread1of1ForFork1_thidvar0_4) (= 0 v_thread3Thread1of1ForFork1_thidvar1_4) (= 0 v_thread3Thread1of1ForFork1_thidvar2_4)) InVars {thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, ULTIMATE.start_main_#t~mem39#1=|v_ULTIMATE.start_main_#t~mem39#1_5|, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} OutVars{thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, ULTIMATE.start_main_#t~mem39#1=|v_ULTIMATE.start_main_#t~mem39#1_5|, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} AuxVars[] AssignedVars[][275], [Black: 285#true, 297#true, Black: 275#(not (= (+ ~is_null_0~0 (* (- 256) (div ~is_null_0~0 256))) 0)), 16#L80-2true, Black: 291#true, Black: 279#true, 293#(= (+ (* (- 256) (div ~is_null_6~0 256)) ~is_null_6~0) 0), 287#(not (= 0 (+ (* (div ~is_null_3~0 256) (- 256)) ~is_null_3~0)))]) [2022-09-20 22:45:29,186 INFO L383 tUnfolder$Statistics]: this new event has 116 ancestors and is not cut-off event [2022-09-20 22:45:29,186 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is not cut-off event [2022-09-20 22:45:29,186 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is not cut-off event [2022-09-20 22:45:29,186 INFO L386 tUnfolder$Statistics]: existing Event has 124 ancestors and is not cut-off event [2022-09-20 22:45:29,186 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is not cut-off event [2022-09-20 22:45:29,186 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is not cut-off event [2022-09-20 22:45:29,186 INFO L386 tUnfolder$Statistics]: existing Event has 124 ancestors and is not cut-off event [2022-09-20 22:45:29,186 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is not cut-off event [2022-09-20 22:45:29,216 INFO L130 PetriNetUnfolder]: 172/2726 cut-off events. [2022-09-20 22:45:29,216 INFO L131 PetriNetUnfolder]: For 120/141 co-relation queries the response was YES. [2022-09-20 22:45:29,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3239 conditions, 2726 events. 172/2726 cut-off events. For 120/141 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 29249 event pairs, 46 based on Foata normal form. 4/2509 useless extension candidates. Maximal degree in co-relation 1902. Up to 183 conditions per place. [2022-09-20 22:45:29,241 INFO L137 encePairwiseOnDemand]: 278/286 looper letters, 33 selfloop transitions, 5 changer transitions 4/293 dead transitions. [2022-09-20 22:45:29,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 293 transitions, 780 flow [2022-09-20 22:45:29,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 22:45:29,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 22:45:29,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2320 transitions. [2022-09-20 22:45:29,245 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9013209013209014 [2022-09-20 22:45:29,246 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2320 transitions. [2022-09-20 22:45:29,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2320 transitions. [2022-09-20 22:45:29,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:45:29,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2320 transitions. [2022-09-20 22:45:29,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 257.77777777777777) internal successors, (2320), 9 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:29,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 286.0) internal successors, (2860), 10 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:29,257 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 286.0) internal successors, (2860), 10 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:29,257 INFO L175 Difference]: Start difference. First operand has 260 places, 273 transitions, 643 flow. Second operand 9 states and 2320 transitions. [2022-09-20 22:45:29,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 293 transitions, 780 flow [2022-09-20 22:45:29,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 293 transitions, 768 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 22:45:29,264 INFO L231 Difference]: Finished difference. Result has 273 places, 277 transitions, 672 flow [2022-09-20 22:45:29,265 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=672, PETRI_PLACES=273, PETRI_TRANSITIONS=277} [2022-09-20 22:45:29,266 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 17 predicate places. [2022-09-20 22:45:29,267 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 277 transitions, 672 flow [2022-09-20 22:45:29,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 255.85714285714286) internal successors, (1791), 7 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:29,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:45:29,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:45:29,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 22:45:29,268 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:45:29,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:45:29,268 INFO L85 PathProgramCache]: Analyzing trace with hash -40798593, now seen corresponding path program 1 times [2022-09-20 22:45:29,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:45:29,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734719102] [2022-09-20 22:45:29,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:45:29,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:45:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:45:29,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:45:29,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:45:29,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734719102] [2022-09-20 22:45:29,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734719102] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:45:29,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:45:29,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:45:29,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007969435] [2022-09-20 22:45:29,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:45:29,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:45:29,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:45:29,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:45:29,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:45:29,386 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:45:29,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 277 transitions, 672 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:29,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:45:29,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:45:29,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:45:30,391 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([802] L56-3-->L56-4: Formula: (= |v_thread3Thread1of1ForFork1_#t~ite15#1_3| 1) InVars {} OutVars{thread3Thread1of1ForFork1_#t~ite15#1=|v_thread3Thread1of1ForFork1_#t~ite15#1_3|} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_#t~ite15#1][163], [Black: 316#(and (= ~result_9~0 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 285#true, Black: 301#(= ~result_9~0 1), Black: 309#(and (= ~result_9~0 1) (= |thread1Thread1of1ForFork2_#t~ite1#1| 1)), Black: 307#(and (= ~result_9~0 1) (= |thread1Thread1of1ForFork2_#t~ite7#1| 1) (= |thread1Thread1of1ForFork2_#t~ite1#1| 1)), Black: 305#(and (= |thread1Thread1of1ForFork2_#t~ite7#1| 1) (= |thread1Thread1of1ForFork2_#t~ite1#1| 1)), Black: 291#true, 167#L78-2true, 297#true, Black: 275#(not (= (+ ~is_null_0~0 (* (- 256) (div ~is_null_0~0 256))) 0)), 49#L50-29true, Black: 279#true, 327#(= |thread3Thread1of1ForFork1_#t~ite15#1| 1), Black: 299#(= |thread1Thread1of1ForFork2_#t~ite1#1| 1), 202#L56-4true, Black: 314#(and (= ~result_9~0 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 287#(not (= 0 (+ (* (div ~is_null_3~0 256) (- 256)) ~is_null_3~0)))]) [2022-09-20 22:45:30,392 INFO L383 tUnfolder$Statistics]: this new event has 97 ancestors and is cut-off event [2022-09-20 22:45:30,392 INFO L386 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-09-20 22:45:30,392 INFO L386 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-09-20 22:45:30,392 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-09-20 22:45:30,406 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([802] L56-3-->L56-4: Formula: (= |v_thread3Thread1of1ForFork1_#t~ite15#1_3| 1) InVars {} OutVars{thread3Thread1of1ForFork1_#t~ite15#1=|v_thread3Thread1of1ForFork1_#t~ite15#1_3|} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_#t~ite15#1][163], [Black: 316#(and (= ~result_9~0 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 285#true, Black: 301#(= ~result_9~0 1), Black: 309#(and (= ~result_9~0 1) (= |thread1Thread1of1ForFork2_#t~ite1#1| 1)), Black: 307#(and (= ~result_9~0 1) (= |thread1Thread1of1ForFork2_#t~ite7#1| 1) (= |thread1Thread1of1ForFork2_#t~ite1#1| 1)), Black: 305#(and (= |thread1Thread1of1ForFork2_#t~ite7#1| 1) (= |thread1Thread1of1ForFork2_#t~ite1#1| 1)), Black: 291#true, 167#L78-2true, 297#true, Black: 275#(not (= (+ ~is_null_0~0 (* (- 256) (div ~is_null_0~0 256))) 0)), 244#L50-30true, Black: 279#true, 327#(= |thread3Thread1of1ForFork1_#t~ite15#1| 1), 202#L56-4true, Black: 299#(= |thread1Thread1of1ForFork2_#t~ite1#1| 1), Black: 314#(and (= ~result_9~0 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 287#(not (= 0 (+ (* (div ~is_null_3~0 256) (- 256)) ~is_null_3~0)))]) [2022-09-20 22:45:30,406 INFO L383 tUnfolder$Statistics]: this new event has 98 ancestors and is cut-off event [2022-09-20 22:45:30,406 INFO L386 tUnfolder$Statistics]: existing Event has 94 ancestors and is cut-off event [2022-09-20 22:45:30,406 INFO L386 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-09-20 22:45:30,406 INFO L386 tUnfolder$Statistics]: existing Event has 94 ancestors and is cut-off event [2022-09-20 22:45:30,425 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([802] L56-3-->L56-4: Formula: (= |v_thread3Thread1of1ForFork1_#t~ite15#1_3| 1) InVars {} OutVars{thread3Thread1of1ForFork1_#t~ite15#1=|v_thread3Thread1of1ForFork1_#t~ite15#1_3|} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_#t~ite15#1][163], [Black: 316#(and (= ~result_9~0 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 285#true, Black: 301#(= ~result_9~0 1), Black: 309#(and (= ~result_9~0 1) (= |thread1Thread1of1ForFork2_#t~ite1#1| 1)), Black: 307#(and (= ~result_9~0 1) (= |thread1Thread1of1ForFork2_#t~ite7#1| 1) (= |thread1Thread1of1ForFork2_#t~ite1#1| 1)), Black: 305#(and (= |thread1Thread1of1ForFork2_#t~ite7#1| 1) (= |thread1Thread1of1ForFork2_#t~ite1#1| 1)), Black: 291#true, 109#L50-31true, 167#L78-2true, 297#true, Black: 275#(not (= (+ ~is_null_0~0 (* (- 256) (div ~is_null_0~0 256))) 0)), Black: 279#true, 327#(= |thread3Thread1of1ForFork1_#t~ite15#1| 1), 202#L56-4true, Black: 299#(= |thread1Thread1of1ForFork2_#t~ite1#1| 1), Black: 314#(and (= ~result_9~0 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 287#(not (= 0 (+ (* (div ~is_null_3~0 256) (- 256)) ~is_null_3~0)))]) [2022-09-20 22:45:30,425 INFO L383 tUnfolder$Statistics]: this new event has 99 ancestors and is cut-off event [2022-09-20 22:45:30,425 INFO L386 tUnfolder$Statistics]: existing Event has 91 ancestors and is cut-off event [2022-09-20 22:45:30,426 INFO L386 tUnfolder$Statistics]: existing Event has 95 ancestors and is cut-off event [2022-09-20 22:45:30,426 INFO L386 tUnfolder$Statistics]: existing Event has 95 ancestors and is cut-off event [2022-09-20 22:45:30,437 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([802] L56-3-->L56-4: Formula: (= |v_thread3Thread1of1ForFork1_#t~ite15#1_3| 1) InVars {} OutVars{thread3Thread1of1ForFork1_#t~ite15#1=|v_thread3Thread1of1ForFork1_#t~ite15#1_3|} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_#t~ite15#1][163], [Black: 316#(and (= ~result_9~0 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 285#true, Black: 301#(= ~result_9~0 1), Black: 309#(and (= ~result_9~0 1) (= |thread1Thread1of1ForFork2_#t~ite1#1| 1)), 26#L50-32true, Black: 307#(and (= ~result_9~0 1) (= |thread1Thread1of1ForFork2_#t~ite7#1| 1) (= |thread1Thread1of1ForFork2_#t~ite1#1| 1)), Black: 305#(and (= |thread1Thread1of1ForFork2_#t~ite7#1| 1) (= |thread1Thread1of1ForFork2_#t~ite1#1| 1)), Black: 291#true, 167#L78-2true, 297#true, Black: 275#(not (= (+ ~is_null_0~0 (* (- 256) (div ~is_null_0~0 256))) 0)), Black: 279#true, 327#(= |thread3Thread1of1ForFork1_#t~ite15#1| 1), 202#L56-4true, Black: 299#(= |thread1Thread1of1ForFork2_#t~ite1#1| 1), Black: 314#(and (= ~result_9~0 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 287#(not (= 0 (+ (* (div ~is_null_3~0 256) (- 256)) ~is_null_3~0)))]) [2022-09-20 22:45:30,437 INFO L383 tUnfolder$Statistics]: this new event has 100 ancestors and is cut-off event [2022-09-20 22:45:30,437 INFO L386 tUnfolder$Statistics]: existing Event has 96 ancestors and is cut-off event [2022-09-20 22:45:30,437 INFO L386 tUnfolder$Statistics]: existing Event has 92 ancestors and is cut-off event [2022-09-20 22:45:30,437 INFO L386 tUnfolder$Statistics]: existing Event has 96 ancestors and is cut-off event [2022-09-20 22:45:30,503 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([802] L56-3-->L56-4: Formula: (= |v_thread3Thread1of1ForFork1_#t~ite15#1_3| 1) InVars {} OutVars{thread3Thread1of1ForFork1_#t~ite15#1=|v_thread3Thread1of1ForFork1_#t~ite15#1_3|} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_#t~ite15#1][163], [Black: 316#(and (= ~result_9~0 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 285#true, Black: 301#(= ~result_9~0 1), Black: 309#(and (= ~result_9~0 1) (= |thread1Thread1of1ForFork2_#t~ite1#1| 1)), 154#L79-2true, Black: 307#(and (= ~result_9~0 1) (= |thread1Thread1of1ForFork2_#t~ite7#1| 1) (= |thread1Thread1of1ForFork2_#t~ite1#1| 1)), Black: 305#(and (= |thread1Thread1of1ForFork2_#t~ite7#1| 1) (= |thread1Thread1of1ForFork2_#t~ite1#1| 1)), Black: 291#true, 297#true, Black: 275#(not (= (+ ~is_null_0~0 (* (- 256) (div ~is_null_0~0 256))) 0)), Black: 279#true, 327#(= |thread3Thread1of1ForFork1_#t~ite15#1| 1), 202#L56-4true, Black: 299#(= |thread1Thread1of1ForFork2_#t~ite1#1| 1), Black: 314#(and (= ~result_9~0 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 287#(not (= 0 (+ (* (div ~is_null_3~0 256) (- 256)) ~is_null_3~0)))]) [2022-09-20 22:45:30,504 INFO L383 tUnfolder$Statistics]: this new event has 110 ancestors and is cut-off event [2022-09-20 22:45:30,504 INFO L386 tUnfolder$Statistics]: existing Event has 106 ancestors and is cut-off event [2022-09-20 22:45:30,504 INFO L386 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-09-20 22:45:30,504 INFO L386 tUnfolder$Statistics]: existing Event has 106 ancestors and is cut-off event [2022-09-20 22:45:30,563 INFO L130 PetriNetUnfolder]: 2242/8172 cut-off events. [2022-09-20 22:45:30,563 INFO L131 PetriNetUnfolder]: For 865/890 co-relation queries the response was YES. [2022-09-20 22:45:30,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12464 conditions, 8172 events. 2242/8172 cut-off events. For 865/890 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 95139 event pairs, 1233 based on Foata normal form. 2/7445 useless extension candidates. Maximal degree in co-relation 12319. Up to 2837 conditions per place. [2022-09-20 22:45:30,625 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 80 selfloop transitions, 30 changer transitions 26/383 dead transitions. [2022-09-20 22:45:30,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 383 transitions, 1198 flow [2022-09-20 22:45:30,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-20 22:45:30,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-20 22:45:30,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6017 transitions. [2022-09-20 22:45:30,634 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8766025641025641 [2022-09-20 22:45:30,635 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6017 transitions. [2022-09-20 22:45:30,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6017 transitions. [2022-09-20 22:45:30,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:45:30,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6017 transitions. [2022-09-20 22:45:30,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 250.70833333333334) internal successors, (6017), 24 states have internal predecessors, (6017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:30,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:30,713 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:30,714 INFO L175 Difference]: Start difference. First operand has 273 places, 277 transitions, 672 flow. Second operand 24 states and 6017 transitions. [2022-09-20 22:45:30,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 383 transitions, 1198 flow [2022-09-20 22:45:30,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 383 transitions, 1185 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-09-20 22:45:30,719 INFO L231 Difference]: Finished difference. Result has 311 places, 306 transitions, 883 flow [2022-09-20 22:45:30,719 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=883, PETRI_PLACES=311, PETRI_TRANSITIONS=306} [2022-09-20 22:45:30,720 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 55 predicate places. [2022-09-20 22:45:30,720 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 306 transitions, 883 flow [2022-09-20 22:45:30,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:30,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:45:30,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:45:30,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 22:45:30,721 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:45:30,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:45:30,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1886205161, now seen corresponding path program 1 times [2022-09-20 22:45:30,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:45:30,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704980692] [2022-09-20 22:45:30,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:45:30,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:45:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:45:30,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:45:30,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:45:30,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704980692] [2022-09-20 22:45:30,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704980692] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:45:30,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:45:30,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:45:30,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321187766] [2022-09-20 22:45:30,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:45:30,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:45:30,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:45:30,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:45:30,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:45:30,748 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 286 [2022-09-20 22:45:30,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 306 transitions, 883 flow. Second operand has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:30,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:45:30,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 286 [2022-09-20 22:45:30,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:45:31,102 INFO L130 PetriNetUnfolder]: 274/3203 cut-off events. [2022-09-20 22:45:31,102 INFO L131 PetriNetUnfolder]: For 504/552 co-relation queries the response was YES. [2022-09-20 22:45:31,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4762 conditions, 3203 events. 274/3203 cut-off events. For 504/552 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 31396 event pairs, 51 based on Foata normal form. 1/2941 useless extension candidates. Maximal degree in co-relation 4698. Up to 149 conditions per place. [2022-09-20 22:45:31,129 INFO L137 encePairwiseOnDemand]: 278/286 looper letters, 24 selfloop transitions, 4 changer transitions 0/314 dead transitions. [2022-09-20 22:45:31,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 314 transitions, 967 flow [2022-09-20 22:45:31,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:45:31,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:45:31,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 811 transitions. [2022-09-20 22:45:31,131 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9452214452214452 [2022-09-20 22:45:31,131 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 811 transitions. [2022-09-20 22:45:31,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 811 transitions. [2022-09-20 22:45:31,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:45:31,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 811 transitions. [2022-09-20 22:45:31,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:31,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 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) [2022-09-20 22:45:31,134 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 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) [2022-09-20 22:45:31,134 INFO L175 Difference]: Start difference. First operand has 311 places, 306 transitions, 883 flow. Second operand 3 states and 811 transitions. [2022-09-20 22:45:31,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 314 transitions, 967 flow [2022-09-20 22:45:31,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 314 transitions, 963 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-09-20 22:45:31,147 INFO L231 Difference]: Finished difference. Result has 311 places, 310 transitions, 927 flow [2022-09-20 22:45:31,147 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=927, PETRI_PLACES=311, PETRI_TRANSITIONS=310} [2022-09-20 22:45:31,148 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 55 predicate places. [2022-09-20 22:45:31,148 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 310 transitions, 927 flow [2022-09-20 22:45:31,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:31,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:45:31,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:45:31,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 22:45:31,149 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:45:31,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:45:31,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1147074137, now seen corresponding path program 1 times [2022-09-20 22:45:31,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:45:31,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98333680] [2022-09-20 22:45:31,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:45:31,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:45:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:45:31,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:45:31,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:45:31,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98333680] [2022-09-20 22:45:31,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98333680] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:45:31,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:45:31,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:45:31,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508202059] [2022-09-20 22:45:31,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:45:31,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:45:31,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:45:31,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:45:31,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:45:31,220 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 286 [2022-09-20 22:45:31,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 310 transitions, 927 flow. Second operand has 7 states, 7 states have (on average 255.85714285714286) internal successors, (1791), 7 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:31,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:45:31,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 286 [2022-09-20 22:45:31,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:45:31,582 INFO L130 PetriNetUnfolder]: 156/2205 cut-off events. [2022-09-20 22:45:31,582 INFO L131 PetriNetUnfolder]: For 437/658 co-relation queries the response was YES. [2022-09-20 22:45:31,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3517 conditions, 2205 events. 156/2205 cut-off events. For 437/658 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 22124 event pairs, 29 based on Foata normal form. 3/2086 useless extension candidates. Maximal degree in co-relation 3333. Up to 181 conditions per place. [2022-09-20 22:45:31,615 INFO L137 encePairwiseOnDemand]: 278/286 looper letters, 26 selfloop transitions, 5 changer transitions 14/330 dead transitions. [2022-09-20 22:45:31,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 330 transitions, 1076 flow [2022-09-20 22:45:31,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 22:45:31,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 22:45:31,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2320 transitions. [2022-09-20 22:45:31,619 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9013209013209014 [2022-09-20 22:45:31,619 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2320 transitions. [2022-09-20 22:45:31,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2320 transitions. [2022-09-20 22:45:31,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:45:31,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2320 transitions. [2022-09-20 22:45:31,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 257.77777777777777) internal successors, (2320), 9 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:31,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 286.0) internal successors, (2860), 10 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:31,628 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 286.0) internal successors, (2860), 10 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:31,628 INFO L175 Difference]: Start difference. First operand has 311 places, 310 transitions, 927 flow. Second operand 9 states and 2320 transitions. [2022-09-20 22:45:31,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 330 transitions, 1076 flow [2022-09-20 22:45:31,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 330 transitions, 1064 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-09-20 22:45:31,640 INFO L231 Difference]: Finished difference. Result has 325 places, 314 transitions, 960 flow [2022-09-20 22:45:31,641 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=960, PETRI_PLACES=325, PETRI_TRANSITIONS=314} [2022-09-20 22:45:31,641 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 69 predicate places. [2022-09-20 22:45:31,642 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 314 transitions, 960 flow [2022-09-20 22:45:31,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 255.85714285714286) internal successors, (1791), 7 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:31,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:45:31,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:45:31,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 22:45:31,643 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:45:31,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:45:31,643 INFO L85 PathProgramCache]: Analyzing trace with hash -957026527, now seen corresponding path program 2 times [2022-09-20 22:45:31,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:45:31,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937445629] [2022-09-20 22:45:31,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:45:31,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:45:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:45:31,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:45:31,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:45:31,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937445629] [2022-09-20 22:45:31,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937445629] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:45:31,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:45:31,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:45:31,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93117077] [2022-09-20 22:45:31,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:45:31,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:45:31,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:45:31,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:45:31,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:45:31,771 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:45:31,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 314 transitions, 960 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:31,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:45:31,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:45:31,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:45:32,873 INFO L130 PetriNetUnfolder]: 1698/6986 cut-off events. [2022-09-20 22:45:32,873 INFO L131 PetriNetUnfolder]: For 5748/5838 co-relation queries the response was YES. [2022-09-20 22:45:32,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14908 conditions, 6986 events. 1698/6986 cut-off events. For 5748/5838 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 83085 event pairs, 1054 based on Foata normal form. 1/6452 useless extension candidates. Maximal degree in co-relation 14740. Up to 2165 conditions per place. [2022-09-20 22:45:32,974 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 105 selfloop transitions, 45 changer transitions 28/433 dead transitions. [2022-09-20 22:45:32,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 433 transitions, 1864 flow [2022-09-20 22:45:32,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-20 22:45:32,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-20 22:45:32,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6015 transitions. [2022-09-20 22:45:32,983 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8763111888111889 [2022-09-20 22:45:32,983 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6015 transitions. [2022-09-20 22:45:32,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6015 transitions. [2022-09-20 22:45:32,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:45:32,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6015 transitions. [2022-09-20 22:45:32,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 250.625) internal successors, (6015), 24 states have internal predecessors, (6015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:33,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:33,002 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:33,002 INFO L175 Difference]: Start difference. First operand has 325 places, 314 transitions, 960 flow. Second operand 24 states and 6015 transitions. [2022-09-20 22:45:33,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 433 transitions, 1864 flow [2022-09-20 22:45:33,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 433 transitions, 1847 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-09-20 22:45:33,036 INFO L231 Difference]: Finished difference. Result has 363 places, 343 transitions, 1365 flow [2022-09-20 22:45:33,036 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1365, PETRI_PLACES=363, PETRI_TRANSITIONS=343} [2022-09-20 22:45:33,037 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 107 predicate places. [2022-09-20 22:45:33,037 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 343 transitions, 1365 flow [2022-09-20 22:45:33,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:33,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:45:33,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:45:33,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 22:45:33,038 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:45:33,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:45:33,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1336258347, now seen corresponding path program 3 times [2022-09-20 22:45:33,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:45:33,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291687760] [2022-09-20 22:45:33,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:45:33,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:45:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:45:33,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:45:33,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:45:33,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291687760] [2022-09-20 22:45:33,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291687760] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:45:33,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:45:33,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:45:33,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258563137] [2022-09-20 22:45:33,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:45:33,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:45:33,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:45:33,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:45:33,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:45:33,137 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:45:33,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 343 transitions, 1365 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:33,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:45:33,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:45:33,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:45:34,407 INFO L130 PetriNetUnfolder]: 1790/7026 cut-off events. [2022-09-20 22:45:34,407 INFO L131 PetriNetUnfolder]: For 14272/14361 co-relation queries the response was YES. [2022-09-20 22:45:34,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18620 conditions, 7026 events. 1790/7026 cut-off events. For 14272/14361 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 83692 event pairs, 1122 based on Foata normal form. 2/6500 useless extension candidates. Maximal degree in co-relation 18528. Up to 2489 conditions per place. [2022-09-20 22:45:34,468 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 89 selfloop transitions, 50 changer transitions 14/408 dead transitions. [2022-09-20 22:45:34,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 408 transitions, 2177 flow [2022-09-20 22:45:34,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 22:45:34,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 22:45:34,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4014 transitions. [2022-09-20 22:45:34,474 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8771853146853147 [2022-09-20 22:45:34,474 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4014 transitions. [2022-09-20 22:45:34,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4014 transitions. [2022-09-20 22:45:34,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:45:34,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4014 transitions. [2022-09-20 22:45:34,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 250.875) internal successors, (4014), 16 states have internal predecessors, (4014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:34,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:34,557 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:34,557 INFO L175 Difference]: Start difference. First operand has 363 places, 343 transitions, 1365 flow. Second operand 16 states and 4014 transitions. [2022-09-20 22:45:34,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 408 transitions, 2177 flow [2022-09-20 22:45:34,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 408 transitions, 2087 flow, removed 45 selfloop flow, removed 2 redundant places. [2022-09-20 22:45:34,679 INFO L231 Difference]: Finished difference. Result has 385 places, 362 transitions, 1679 flow [2022-09-20 22:45:34,680 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1679, PETRI_PLACES=385, PETRI_TRANSITIONS=362} [2022-09-20 22:45:34,681 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 129 predicate places. [2022-09-20 22:45:34,681 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 362 transitions, 1679 flow [2022-09-20 22:45:34,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:34,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:45:34,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:45:34,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-20 22:45:34,682 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:45:34,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:45:34,682 INFO L85 PathProgramCache]: Analyzing trace with hash 415070505, now seen corresponding path program 4 times [2022-09-20 22:45:34,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:45:34,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047636353] [2022-09-20 22:45:34,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:45:34,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:45:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:45:34,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:45:34,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:45:34,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047636353] [2022-09-20 22:45:34,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047636353] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:45:34,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:45:34,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:45:34,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031866862] [2022-09-20 22:45:34,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:45:34,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:45:34,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:45:34,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:45:34,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:45:34,788 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:45:34,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 362 transitions, 1679 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:34,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:45:34,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:45:34,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:45:36,392 INFO L130 PetriNetUnfolder]: 1994/8044 cut-off events. [2022-09-20 22:45:36,392 INFO L131 PetriNetUnfolder]: For 22931/23032 co-relation queries the response was YES. [2022-09-20 22:45:36,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22101 conditions, 8044 events. 1994/8044 cut-off events. For 22931/23032 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 98890 event pairs, 1118 based on Foata normal form. 4/7519 useless extension candidates. Maximal degree in co-relation 21999. Up to 2419 conditions per place. [2022-09-20 22:45:36,482 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 112 selfloop transitions, 54 changer transitions 22/443 dead transitions. [2022-09-20 22:45:36,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 443 transitions, 2870 flow [2022-09-20 22:45:36,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 22:45:36,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 22:45:36,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5012 transitions. [2022-09-20 22:45:36,487 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8762237762237762 [2022-09-20 22:45:36,487 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5012 transitions. [2022-09-20 22:45:36,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5012 transitions. [2022-09-20 22:45:36,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:45:36,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5012 transitions. [2022-09-20 22:45:36,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 250.6) internal successors, (5012), 20 states have internal predecessors, (5012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:36,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:36,501 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:36,501 INFO L175 Difference]: Start difference. First operand has 385 places, 362 transitions, 1679 flow. Second operand 20 states and 5012 transitions. [2022-09-20 22:45:36,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 443 transitions, 2870 flow [2022-09-20 22:45:36,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 443 transitions, 2704 flow, removed 73 selfloop flow, removed 3 redundant places. [2022-09-20 22:45:36,654 INFO L231 Difference]: Finished difference. Result has 414 places, 394 transitions, 2242 flow [2022-09-20 22:45:36,655 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2242, PETRI_PLACES=414, PETRI_TRANSITIONS=394} [2022-09-20 22:45:36,655 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 158 predicate places. [2022-09-20 22:45:36,655 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 394 transitions, 2242 flow [2022-09-20 22:45:36,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:36,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:45:36,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:45:36,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-20 22:45:36,656 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:45:36,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:45:36,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1008224355, now seen corresponding path program 5 times [2022-09-20 22:45:36,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:45:36,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694803648] [2022-09-20 22:45:36,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:45:36,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:45:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:45:36,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:45:36,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:45:36,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694803648] [2022-09-20 22:45:36,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694803648] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:45:36,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:45:36,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:45:36,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776471631] [2022-09-20 22:45:36,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:45:36,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:45:36,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:45:36,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:45:36,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:45:36,770 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:45:36,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 394 transitions, 2242 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:36,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:45:36,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:45:36,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:45:38,609 INFO L130 PetriNetUnfolder]: 2060/8226 cut-off events. [2022-09-20 22:45:38,609 INFO L131 PetriNetUnfolder]: For 33559/33684 co-relation queries the response was YES. [2022-09-20 22:45:38,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25030 conditions, 8226 events. 2060/8226 cut-off events. For 33559/33684 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 101801 event pairs, 1174 based on Foata normal form. 6/7681 useless extension candidates. Maximal degree in co-relation 24915. Up to 2689 conditions per place. [2022-09-20 22:45:38,695 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 128 selfloop transitions, 67 changer transitions 19/469 dead transitions. [2022-09-20 22:45:38,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 469 transitions, 3571 flow [2022-09-20 22:45:38,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 22:45:38,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 22:45:38,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5008 transitions. [2022-09-20 22:45:38,699 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8755244755244755 [2022-09-20 22:45:38,699 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5008 transitions. [2022-09-20 22:45:38,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5008 transitions. [2022-09-20 22:45:38,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:45:38,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5008 transitions. [2022-09-20 22:45:38,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 250.4) internal successors, (5008), 20 states have internal predecessors, (5008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:38,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:38,709 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:38,709 INFO L175 Difference]: Start difference. First operand has 414 places, 394 transitions, 2242 flow. Second operand 20 states and 5008 transitions. [2022-09-20 22:45:38,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 469 transitions, 3571 flow [2022-09-20 22:45:39,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 469 transitions, 3175 flow, removed 198 selfloop flow, removed 2 redundant places. [2022-09-20 22:45:39,012 INFO L231 Difference]: Finished difference. Result has 444 places, 426 transitions, 2733 flow [2022-09-20 22:45:39,012 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2733, PETRI_PLACES=444, PETRI_TRANSITIONS=426} [2022-09-20 22:45:39,013 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 188 predicate places. [2022-09-20 22:45:39,013 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 426 transitions, 2733 flow [2022-09-20 22:45:39,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:39,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:45:39,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:45:39,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-20 22:45:39,014 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:45:39,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:45:39,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1422465179, now seen corresponding path program 1 times [2022-09-20 22:45:39,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:45:39,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094538840] [2022-09-20 22:45:39,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:45:39,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:45:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:45:39,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:45:39,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:45:39,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094538840] [2022-09-20 22:45:39,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094538840] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:45:39,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:45:39,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:45:39,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111035637] [2022-09-20 22:45:39,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:45:39,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:45:39,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:45:39,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:45:39,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:45:39,099 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:45:39,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 426 transitions, 2733 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:39,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:45:39,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:45:39,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:45:40,980 INFO L130 PetriNetUnfolder]: 2070/8338 cut-off events. [2022-09-20 22:45:40,980 INFO L131 PetriNetUnfolder]: For 34580/34711 co-relation queries the response was YES. [2022-09-20 22:45:41,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25387 conditions, 8338 events. 2070/8338 cut-off events. For 34580/34711 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 103339 event pairs, 384 based on Foata normal form. 3/7868 useless extension candidates. Maximal degree in co-relation 25258. Up to 2258 conditions per place. [2022-09-20 22:45:41,087 INFO L137 encePairwiseOnDemand]: 271/286 looper letters, 210 selfloop transitions, 53 changer transitions 14/532 dead transitions. [2022-09-20 22:45:41,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 532 transitions, 3962 flow [2022-09-20 22:45:41,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 22:45:41,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 22:45:41,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4043 transitions. [2022-09-20 22:45:41,091 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8835227272727273 [2022-09-20 22:45:41,091 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4043 transitions. [2022-09-20 22:45:41,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4043 transitions. [2022-09-20 22:45:41,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:45:41,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4043 transitions. [2022-09-20 22:45:41,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 252.6875) internal successors, (4043), 16 states have internal predecessors, (4043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:41,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:41,100 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:41,100 INFO L175 Difference]: Start difference. First operand has 444 places, 426 transitions, 2733 flow. Second operand 16 states and 4043 transitions. [2022-09-20 22:45:41,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 532 transitions, 3962 flow [2022-09-20 22:45:41,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 532 transitions, 3686 flow, removed 138 selfloop flow, removed 2 redundant places. [2022-09-20 22:45:41,368 INFO L231 Difference]: Finished difference. Result has 467 places, 464 transitions, 2957 flow [2022-09-20 22:45:41,368 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=2521, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2957, PETRI_PLACES=467, PETRI_TRANSITIONS=464} [2022-09-20 22:45:41,369 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 211 predicate places. [2022-09-20 22:45:41,369 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 464 transitions, 2957 flow [2022-09-20 22:45:41,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:41,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:45:41,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:45:41,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-20 22:45:41,370 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:45:41,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:45:41,370 INFO L85 PathProgramCache]: Analyzing trace with hash -661097407, now seen corresponding path program 6 times [2022-09-20 22:45:41,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:45:41,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277600028] [2022-09-20 22:45:41,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:45:41,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:45:41,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:45:41,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:45:41,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:45:41,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277600028] [2022-09-20 22:45:41,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277600028] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:45:41,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:45:41,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:45:41,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099799079] [2022-09-20 22:45:41,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:45:41,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:45:41,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:45:41,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:45:41,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:45:41,539 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:45:41,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 464 transitions, 2957 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:41,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:45:41,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:45:41,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:45:43,656 INFO L130 PetriNetUnfolder]: 2201/8741 cut-off events. [2022-09-20 22:45:43,656 INFO L131 PetriNetUnfolder]: For 32515/32651 co-relation queries the response was YES. [2022-09-20 22:45:43,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28921 conditions, 8741 events. 2201/8741 cut-off events. For 32515/32651 co-relation queries the response was YES. Maximal size of possible extension queue 932. Compared 108652 event pairs, 1066 based on Foata normal form. 2/8197 useless extension candidates. Maximal degree in co-relation 28781. Up to 2819 conditions per place. [2022-09-20 22:45:43,777 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 189 selfloop transitions, 73 changer transitions 17/534 dead transitions. [2022-09-20 22:45:43,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 534 transitions, 4299 flow [2022-09-20 22:45:43,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:45:43,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:45:43,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4515 transitions. [2022-09-20 22:45:43,780 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.877039627039627 [2022-09-20 22:45:43,780 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4515 transitions. [2022-09-20 22:45:43,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4515 transitions. [2022-09-20 22:45:43,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:45:43,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4515 transitions. [2022-09-20 22:45:43,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.83333333333334) internal successors, (4515), 18 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:43,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:43,789 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:43,789 INFO L175 Difference]: Start difference. First operand has 467 places, 464 transitions, 2957 flow. Second operand 18 states and 4515 transitions. [2022-09-20 22:45:43,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 534 transitions, 4299 flow [2022-09-20 22:45:44,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 534 transitions, 4143 flow, removed 71 selfloop flow, removed 3 redundant places. [2022-09-20 22:45:44,110 INFO L231 Difference]: Finished difference. Result has 488 places, 491 transitions, 3509 flow [2022-09-20 22:45:44,111 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=2858, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3509, PETRI_PLACES=488, PETRI_TRANSITIONS=491} [2022-09-20 22:45:44,111 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 232 predicate places. [2022-09-20 22:45:44,111 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 491 transitions, 3509 flow [2022-09-20 22:45:44,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:44,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:45:44,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:45:44,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-20 22:45:44,112 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:45:44,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:45:44,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1427191721, now seen corresponding path program 7 times [2022-09-20 22:45:44,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:45:44,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935392928] [2022-09-20 22:45:44,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:45:44,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:45:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:45:44,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:45:44,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:45:44,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935392928] [2022-09-20 22:45:44,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935392928] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:45:44,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:45:44,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:45:44,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396268760] [2022-09-20 22:45:44,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:45:44,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:45:44,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:45:44,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:45:44,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:45:44,214 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:45:44,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 491 transitions, 3509 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:44,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:45:44,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:45:44,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:45:46,593 INFO L130 PetriNetUnfolder]: 2309/9231 cut-off events. [2022-09-20 22:45:46,593 INFO L131 PetriNetUnfolder]: For 36311/36475 co-relation queries the response was YES. [2022-09-20 22:45:46,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31242 conditions, 9231 events. 2309/9231 cut-off events. For 36311/36475 co-relation queries the response was YES. Maximal size of possible extension queue 1010. Compared 116668 event pairs, 1006 based on Foata normal form. 13/8704 useless extension candidates. Maximal degree in co-relation 31095. Up to 2879 conditions per place. [2022-09-20 22:45:46,729 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 188 selfloop transitions, 109 changer transitions 24/576 dead transitions. [2022-09-20 22:45:46,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 576 transitions, 5013 flow [2022-09-20 22:45:46,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-20 22:45:46,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-20 22:45:46,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5507 transitions. [2022-09-20 22:45:46,732 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8752383979656707 [2022-09-20 22:45:46,732 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5507 transitions. [2022-09-20 22:45:46,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5507 transitions. [2022-09-20 22:45:46,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:45:46,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5507 transitions. [2022-09-20 22:45:46,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 250.3181818181818) internal successors, (5507), 22 states have internal predecessors, (5507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:46,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:46,741 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:46,742 INFO L175 Difference]: Start difference. First operand has 488 places, 491 transitions, 3509 flow. Second operand 22 states and 5507 transitions. [2022-09-20 22:45:46,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 576 transitions, 5013 flow [2022-09-20 22:45:47,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 576 transitions, 4837 flow, removed 88 selfloop flow, removed 2 redundant places. [2022-09-20 22:45:47,077 INFO L231 Difference]: Finished difference. Result has 518 places, 519 transitions, 4086 flow [2022-09-20 22:45:47,078 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=3349, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4086, PETRI_PLACES=518, PETRI_TRANSITIONS=519} [2022-09-20 22:45:47,078 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 262 predicate places. [2022-09-20 22:45:47,078 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 519 transitions, 4086 flow [2022-09-20 22:45:47,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:47,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:45:47,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:45:47,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-20 22:45:47,079 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:45:47,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:45:47,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1822948283, now seen corresponding path program 8 times [2022-09-20 22:45:47,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:45:47,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987174738] [2022-09-20 22:45:47,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:45:47,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:45:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:45:47,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:45:47,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:45:47,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987174738] [2022-09-20 22:45:47,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987174738] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:45:47,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:45:47,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:45:47,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035057465] [2022-09-20 22:45:47,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:45:47,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:45:47,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:45:47,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:45:47,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:45:47,158 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:45:47,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 519 transitions, 4086 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:47,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:45:47,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:45:47,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:45:49,631 INFO L130 PetriNetUnfolder]: 2299/9333 cut-off events. [2022-09-20 22:45:49,631 INFO L131 PetriNetUnfolder]: For 37672/37841 co-relation queries the response was YES. [2022-09-20 22:45:49,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32252 conditions, 9333 events. 2299/9333 cut-off events. For 37672/37841 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 118443 event pairs, 977 based on Foata normal form. 26/8821 useless extension candidates. Maximal degree in co-relation 32093. Up to 2977 conditions per place. [2022-09-20 22:45:49,772 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 187 selfloop transitions, 111 changer transitions 23/576 dead transitions. [2022-09-20 22:45:49,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 576 transitions, 5268 flow [2022-09-20 22:45:49,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:45:49,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:45:49,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4511 transitions. [2022-09-20 22:45:49,775 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8762626262626263 [2022-09-20 22:45:49,775 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4511 transitions. [2022-09-20 22:45:49,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4511 transitions. [2022-09-20 22:45:49,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:45:49,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4511 transitions. [2022-09-20 22:45:49,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:49,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:49,783 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:49,783 INFO L175 Difference]: Start difference. First operand has 518 places, 519 transitions, 4086 flow. Second operand 18 states and 4511 transitions. [2022-09-20 22:45:49,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 576 transitions, 5268 flow [2022-09-20 22:45:50,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 576 transitions, 5150 flow, removed 57 selfloop flow, removed 3 redundant places. [2022-09-20 22:45:50,189 INFO L231 Difference]: Finished difference. Result has 536 places, 528 transitions, 4408 flow [2022-09-20 22:45:50,190 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=3982, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4408, PETRI_PLACES=536, PETRI_TRANSITIONS=528} [2022-09-20 22:45:50,190 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 280 predicate places. [2022-09-20 22:45:50,190 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 528 transitions, 4408 flow [2022-09-20 22:45:50,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:50,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:45:50,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:45:50,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-09-20 22:45:50,191 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:45:50,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:45:50,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1712896291, now seen corresponding path program 1 times [2022-09-20 22:45:50,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:45:50,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273020597] [2022-09-20 22:45:50,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:45:50,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:45:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:45:50,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:45:50,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:45:50,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273020597] [2022-09-20 22:45:50,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273020597] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:45:50,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:45:50,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:45:50,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524123641] [2022-09-20 22:45:50,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:45:50,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:45:50,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:45:50,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:45:50,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:45:50,214 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 286 [2022-09-20 22:45:50,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 528 transitions, 4408 flow. Second operand has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:50,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:45:50,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 286 [2022-09-20 22:45:50,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:45:51,341 INFO L130 PetriNetUnfolder]: 617/5091 cut-off events. [2022-09-20 22:45:51,341 INFO L131 PetriNetUnfolder]: For 18841/19172 co-relation queries the response was YES. [2022-09-20 22:45:51,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15502 conditions, 5091 events. 617/5091 cut-off events. For 18841/19172 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 56829 event pairs, 58 based on Foata normal form. 22/4916 useless extension candidates. Maximal degree in co-relation 15362. Up to 287 conditions per place. [2022-09-20 22:45:51,417 INFO L137 encePairwiseOnDemand]: 278/286 looper letters, 20 selfloop transitions, 4 changer transitions 6/536 dead transitions. [2022-09-20 22:45:51,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 536 transitions, 4485 flow [2022-09-20 22:45:51,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:45:51,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:45:51,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 814 transitions. [2022-09-20 22:45:51,418 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2022-09-20 22:45:51,418 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 814 transitions. [2022-09-20 22:45:51,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 814 transitions. [2022-09-20 22:45:51,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:45:51,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 814 transitions. [2022-09-20 22:45:51,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.3333333333333) internal successors, (814), 3 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:51,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 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) [2022-09-20 22:45:51,420 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 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) [2022-09-20 22:45:51,420 INFO L175 Difference]: Start difference. First operand has 536 places, 528 transitions, 4408 flow. Second operand 3 states and 814 transitions. [2022-09-20 22:45:51,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 536 transitions, 4485 flow [2022-09-20 22:45:51,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 536 transitions, 4322 flow, removed 42 selfloop flow, removed 7 redundant places. [2022-09-20 22:45:51,641 INFO L231 Difference]: Finished difference. Result has 531 places, 525 transitions, 4253 flow [2022-09-20 22:45:51,641 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=4245, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=4253, PETRI_PLACES=531, PETRI_TRANSITIONS=525} [2022-09-20 22:45:51,642 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 275 predicate places. [2022-09-20 22:45:51,642 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 525 transitions, 4253 flow [2022-09-20 22:45:51,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:51,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:45:51,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:45:51,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-20 22:45:51,642 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:45:51,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:45:51,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1756583427, now seen corresponding path program 9 times [2022-09-20 22:45:51,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:45:51,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929724575] [2022-09-20 22:45:51,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:45:51,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:45:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:45:51,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:45:51,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:45:51,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929724575] [2022-09-20 22:45:51,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929724575] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:45:51,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:45:51,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:45:51,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523506906] [2022-09-20 22:45:51,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:45:51,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:45:51,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:45:51,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:45:51,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:45:51,738 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:45:51,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 525 transitions, 4253 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:51,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:45:51,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:45:51,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:45:53,379 INFO L130 PetriNetUnfolder]: 1398/6545 cut-off events. [2022-09-20 22:45:53,379 INFO L131 PetriNetUnfolder]: For 24935/25102 co-relation queries the response was YES. [2022-09-20 22:45:53,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22379 conditions, 6545 events. 1398/6545 cut-off events. For 24935/25102 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 79971 event pairs, 568 based on Foata normal form. 11/6324 useless extension candidates. Maximal degree in co-relation 22063. Up to 1904 conditions per place. [2022-09-20 22:45:53,652 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 203 selfloop transitions, 114 changer transitions 16/585 dead transitions. [2022-09-20 22:45:53,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 585 transitions, 5610 flow [2022-09-20 22:45:53,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 22:45:53,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 22:45:53,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4265 transitions. [2022-09-20 22:45:53,657 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8772110242698478 [2022-09-20 22:45:53,657 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4265 transitions. [2022-09-20 22:45:53,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4265 transitions. [2022-09-20 22:45:53,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:45:53,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4265 transitions. [2022-09-20 22:45:53,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.88235294117646) internal successors, (4265), 17 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:53,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:53,663 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:53,663 INFO L175 Difference]: Start difference. First operand has 531 places, 525 transitions, 4253 flow. Second operand 17 states and 4265 transitions. [2022-09-20 22:45:53,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 585 transitions, 5610 flow [2022-09-20 22:45:53,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 585 transitions, 5582 flow, removed 10 selfloop flow, removed 7 redundant places. [2022-09-20 22:45:53,904 INFO L231 Difference]: Finished difference. Result has 543 places, 546 transitions, 4938 flow [2022-09-20 22:45:53,904 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=4227, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4938, PETRI_PLACES=543, PETRI_TRANSITIONS=546} [2022-09-20 22:45:53,905 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 287 predicate places. [2022-09-20 22:45:53,905 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 546 transitions, 4938 flow [2022-09-20 22:45:53,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:53,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:45:53,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:45:53,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-20 22:45:53,905 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:45:53,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:45:53,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1284377309, now seen corresponding path program 10 times [2022-09-20 22:45:53,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:45:53,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177252807] [2022-09-20 22:45:53,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:45:53,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:45:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:45:53,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:45:53,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:45:53,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177252807] [2022-09-20 22:45:53,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177252807] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:45:53,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:45:53,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:45:53,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326149006] [2022-09-20 22:45:53,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:45:53,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:45:53,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:45:53,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:45:53,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:45:53,981 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:45:53,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 546 transitions, 4938 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:53,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:45:53,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:45:53,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:45:55,741 INFO L130 PetriNetUnfolder]: 1416/6710 cut-off events. [2022-09-20 22:45:55,741 INFO L131 PetriNetUnfolder]: For 29791/29947 co-relation queries the response was YES. [2022-09-20 22:45:55,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23705 conditions, 6710 events. 1416/6710 cut-off events. For 29791/29947 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 82377 event pairs, 587 based on Foata normal form. 2/6470 useless extension candidates. Maximal degree in co-relation 23562. Up to 1826 conditions per place. [2022-09-20 22:45:55,843 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 221 selfloop transitions, 111 changer transitions 23/607 dead transitions. [2022-09-20 22:45:55,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 607 transitions, 6292 flow [2022-09-20 22:45:55,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-20 22:45:55,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-20 22:45:55,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5261 transitions. [2022-09-20 22:45:55,847 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.875957375957376 [2022-09-20 22:45:55,847 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5261 transitions. [2022-09-20 22:45:55,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5261 transitions. [2022-09-20 22:45:55,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:45:55,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5261 transitions. [2022-09-20 22:45:55,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 250.52380952380952) internal successors, (5261), 21 states have internal predecessors, (5261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:55,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:55,855 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:55,855 INFO L175 Difference]: Start difference. First operand has 543 places, 546 transitions, 4938 flow. Second operand 21 states and 5261 transitions. [2022-09-20 22:45:55,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 607 transitions, 6292 flow [2022-09-20 22:45:56,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 607 transitions, 6148 flow, removed 72 selfloop flow, removed 2 redundant places. [2022-09-20 22:45:56,156 INFO L231 Difference]: Finished difference. Result has 570 places, 566 transitions, 5539 flow [2022-09-20 22:45:56,157 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=4798, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5539, PETRI_PLACES=570, PETRI_TRANSITIONS=566} [2022-09-20 22:45:56,157 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 314 predicate places. [2022-09-20 22:45:56,157 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 566 transitions, 5539 flow [2022-09-20 22:45:56,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:56,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:45:56,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:45:56,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-20 22:45:56,158 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:45:56,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:45:56,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1634393229, now seen corresponding path program 11 times [2022-09-20 22:45:56,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:45:56,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317510367] [2022-09-20 22:45:56,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:45:56,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:45:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:45:56,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:45:56,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:45:56,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317510367] [2022-09-20 22:45:56,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317510367] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:45:56,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:45:56,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:45:56,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432318548] [2022-09-20 22:45:56,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:45:56,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:45:56,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:45:56,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:45:56,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:45:56,241 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:45:56,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 566 transitions, 5539 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:56,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:45:56,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:45:56,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:45:58,131 INFO L130 PetriNetUnfolder]: 1426/6931 cut-off events. [2022-09-20 22:45:58,131 INFO L131 PetriNetUnfolder]: For 32692/32845 co-relation queries the response was YES. [2022-09-20 22:45:58,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25065 conditions, 6931 events. 1426/6931 cut-off events. For 32692/32845 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 86336 event pairs, 572 based on Foata normal form. 11/6707 useless extension candidates. Maximal degree in co-relation 24912. Up to 1971 conditions per place. [2022-09-20 22:45:58,243 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 228 selfloop transitions, 112 changer transitions 19/611 dead transitions. [2022-09-20 22:45:58,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 611 transitions, 6751 flow [2022-09-20 22:45:58,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 22:45:58,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 22:45:58,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4265 transitions. [2022-09-20 22:45:58,248 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8772110242698478 [2022-09-20 22:45:58,248 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4265 transitions. [2022-09-20 22:45:58,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4265 transitions. [2022-09-20 22:45:58,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:45:58,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4265 transitions. [2022-09-20 22:45:58,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.88235294117646) internal successors, (4265), 17 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:58,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:58,260 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:58,260 INFO L175 Difference]: Start difference. First operand has 570 places, 566 transitions, 5539 flow. Second operand 17 states and 4265 transitions. [2022-09-20 22:45:58,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 611 transitions, 6751 flow [2022-09-20 22:45:58,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 611 transitions, 6535 flow, removed 95 selfloop flow, removed 7 redundant places. [2022-09-20 22:45:58,613 INFO L231 Difference]: Finished difference. Result has 583 places, 578 transitions, 5863 flow [2022-09-20 22:45:58,614 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=5357, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5863, PETRI_PLACES=583, PETRI_TRANSITIONS=578} [2022-09-20 22:45:58,614 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 327 predicate places. [2022-09-20 22:45:58,614 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 578 transitions, 5863 flow [2022-09-20 22:45:58,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:58,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:45:58,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:45:58,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-20 22:45:58,615 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:45:58,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:45:58,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1592065379, now seen corresponding path program 12 times [2022-09-20 22:45:58,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:45:58,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986616892] [2022-09-20 22:45:58,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:45:58,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:45:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:45:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:45:58,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:45:58,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986616892] [2022-09-20 22:45:58,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986616892] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:45:58,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:45:58,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:45:58,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395055585] [2022-09-20 22:45:58,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:45:58,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:45:58,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:45:58,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:45:58,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:45:58,690 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:45:58,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 578 transitions, 5863 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:58,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:45:58,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:45:58,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:46:00,507 INFO L130 PetriNetUnfolder]: 1430/6988 cut-off events. [2022-09-20 22:46:00,507 INFO L131 PetriNetUnfolder]: For 34499/34655 co-relation queries the response was YES. [2022-09-20 22:46:00,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25252 conditions, 6988 events. 1430/6988 cut-off events. For 34499/34655 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 87329 event pairs, 594 based on Foata normal form. 2/6745 useless extension candidates. Maximal degree in co-relation 25099. Up to 1978 conditions per place. [2022-09-20 22:46:00,623 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 214 selfloop transitions, 130 changer transitions 22/618 dead transitions. [2022-09-20 22:46:00,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 618 transitions, 6965 flow [2022-09-20 22:46:00,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:46:00,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:46:00,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4511 transitions. [2022-09-20 22:46:00,626 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8762626262626263 [2022-09-20 22:46:00,626 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4511 transitions. [2022-09-20 22:46:00,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4511 transitions. [2022-09-20 22:46:00,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:46:00,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4511 transitions. [2022-09-20 22:46:00,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:00,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:00,633 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:00,633 INFO L175 Difference]: Start difference. First operand has 583 places, 578 transitions, 5863 flow. Second operand 18 states and 4511 transitions. [2022-09-20 22:46:00,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 618 transitions, 6965 flow [2022-09-20 22:46:01,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 618 transitions, 6865 flow, removed 25 selfloop flow, removed 3 redundant places. [2022-09-20 22:46:01,067 INFO L231 Difference]: Finished difference. Result has 600 places, 585 transitions, 6217 flow [2022-09-20 22:46:01,068 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=5765, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6217, PETRI_PLACES=600, PETRI_TRANSITIONS=585} [2022-09-20 22:46:01,068 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 344 predicate places. [2022-09-20 22:46:01,068 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 585 transitions, 6217 flow [2022-09-20 22:46:01,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:01,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:46:01,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:46:01,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-09-20 22:46:01,069 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:46:01,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:46:01,069 INFO L85 PathProgramCache]: Analyzing trace with hash -302177863, now seen corresponding path program 13 times [2022-09-20 22:46:01,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:46:01,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744451039] [2022-09-20 22:46:01,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:46:01,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:46:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:46:01,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:46:01,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:46:01,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744451039] [2022-09-20 22:46:01,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744451039] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:46:01,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:46:01,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:46:01,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305001103] [2022-09-20 22:46:01,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:46:01,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:46:01,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:46:01,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:46:01,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:46:01,164 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:46:01,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 585 transitions, 6217 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:01,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:46:01,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:46:01,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:46:03,192 INFO L130 PetriNetUnfolder]: 1521/7489 cut-off events. [2022-09-20 22:46:03,193 INFO L131 PetriNetUnfolder]: For 41222/41375 co-relation queries the response was YES. [2022-09-20 22:46:03,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27827 conditions, 7489 events. 1521/7489 cut-off events. For 41222/41375 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 95534 event pairs, 495 based on Foata normal form. 4/7267 useless extension candidates. Maximal degree in co-relation 27671. Up to 1800 conditions per place. [2022-09-20 22:46:03,311 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 252 selfloop transitions, 145 changer transitions 23/672 dead transitions. [2022-09-20 22:46:03,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 672 transitions, 8117 flow [2022-09-20 22:46:03,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-20 22:46:03,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-20 22:46:03,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5505 transitions. [2022-09-20 22:46:03,314 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8749205340114431 [2022-09-20 22:46:03,314 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5505 transitions. [2022-09-20 22:46:03,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5505 transitions. [2022-09-20 22:46:03,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:46:03,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5505 transitions. [2022-09-20 22:46:03,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 250.22727272727272) internal successors, (5505), 22 states have internal predecessors, (5505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:03,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:03,321 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:03,321 INFO L175 Difference]: Start difference. First operand has 600 places, 585 transitions, 6217 flow. Second operand 22 states and 5505 transitions. [2022-09-20 22:46:03,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 672 transitions, 8117 flow [2022-09-20 22:46:03,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 672 transitions, 7952 flow, removed 39 selfloop flow, removed 8 redundant places. [2022-09-20 22:46:03,675 INFO L231 Difference]: Finished difference. Result has 625 places, 618 transitions, 7135 flow [2022-09-20 22:46:03,675 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=6063, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7135, PETRI_PLACES=625, PETRI_TRANSITIONS=618} [2022-09-20 22:46:03,675 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 369 predicate places. [2022-09-20 22:46:03,675 INFO L495 AbstractCegarLoop]: Abstraction has has 625 places, 618 transitions, 7135 flow [2022-09-20 22:46:03,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:03,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:46:03,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:46:03,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-09-20 22:46:03,676 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:46:03,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:46:03,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1364180207, now seen corresponding path program 14 times [2022-09-20 22:46:03,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:46:03,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802238192] [2022-09-20 22:46:03,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:46:03,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:46:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:46:03,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:46:03,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:46:03,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802238192] [2022-09-20 22:46:03,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802238192] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:46:03,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:46:03,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:46:03,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598520982] [2022-09-20 22:46:03,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:46:03,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:46:03,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:46:03,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:46:03,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:46:03,765 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:46:03,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 618 transitions, 7135 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:03,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:46:03,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:46:03,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:46:05,889 INFO L130 PetriNetUnfolder]: 1555/7750 cut-off events. [2022-09-20 22:46:05,889 INFO L131 PetriNetUnfolder]: For 48693/48846 co-relation queries the response was YES. [2022-09-20 22:46:06,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29846 conditions, 7750 events. 1555/7750 cut-off events. For 48693/48846 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 99824 event pairs, 507 based on Foata normal form. 4/7520 useless extension candidates. Maximal degree in co-relation 29683. Up to 1825 conditions per place. [2022-09-20 22:46:06,149 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 306 selfloop transitions, 107 changer transitions 21/686 dead transitions. [2022-09-20 22:46:06,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 643 places, 686 transitions, 8929 flow [2022-09-20 22:46:06,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-20 22:46:06,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-20 22:46:06,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5258 transitions. [2022-09-20 22:46:06,153 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8754578754578755 [2022-09-20 22:46:06,153 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5258 transitions. [2022-09-20 22:46:06,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5258 transitions. [2022-09-20 22:46:06,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:46:06,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5258 transitions. [2022-09-20 22:46:06,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 250.38095238095238) internal successors, (5258), 21 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:06,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:06,161 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:06,161 INFO L175 Difference]: Start difference. First operand has 625 places, 618 transitions, 7135 flow. Second operand 21 states and 5258 transitions. [2022-09-20 22:46:06,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 643 places, 686 transitions, 8929 flow [2022-09-20 22:46:06,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 641 places, 686 transitions, 8737 flow, removed 96 selfloop flow, removed 2 redundant places. [2022-09-20 22:46:06,590 INFO L231 Difference]: Finished difference. Result has 655 places, 643 transitions, 7839 flow [2022-09-20 22:46:06,590 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=6957, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=7839, PETRI_PLACES=655, PETRI_TRANSITIONS=643} [2022-09-20 22:46:06,591 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 399 predicate places. [2022-09-20 22:46:06,591 INFO L495 AbstractCegarLoop]: Abstraction has has 655 places, 643 transitions, 7839 flow [2022-09-20 22:46:06,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:06,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:46:06,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:46:06,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-09-20 22:46:06,592 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:46:06,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:46:06,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1261868813, now seen corresponding path program 15 times [2022-09-20 22:46:06,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:46:06,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765905116] [2022-09-20 22:46:06,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:46:06,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:46:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:46:06,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:46:06,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:46:06,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765905116] [2022-09-20 22:46:06,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765905116] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:46:06,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:46:06,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:46:06,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896831616] [2022-09-20 22:46:06,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:46:06,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:46:06,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:46:06,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:46:06,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:46:06,656 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:46:06,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 655 places, 643 transitions, 7839 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:06,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:46:06,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:46:06,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:46:08,894 INFO L130 PetriNetUnfolder]: 1578/7981 cut-off events. [2022-09-20 22:46:08,894 INFO L131 PetriNetUnfolder]: For 54029/54182 co-relation queries the response was YES. [2022-09-20 22:46:09,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31254 conditions, 7981 events. 1578/7981 cut-off events. For 54029/54182 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 103989 event pairs, 500 based on Foata normal form. 4/7760 useless extension candidates. Maximal degree in co-relation 31078. Up to 1896 conditions per place. [2022-09-20 22:46:09,038 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 275 selfloop transitions, 163 changer transitions 18/708 dead transitions. [2022-09-20 22:46:09,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 708 transitions, 9543 flow [2022-09-20 22:46:09,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:46:09,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:46:09,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4511 transitions. [2022-09-20 22:46:09,040 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8762626262626263 [2022-09-20 22:46:09,041 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4511 transitions. [2022-09-20 22:46:09,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4511 transitions. [2022-09-20 22:46:09,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:46:09,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4511 transitions. [2022-09-20 22:46:09,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:09,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:09,048 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:09,049 INFO L175 Difference]: Start difference. First operand has 655 places, 643 transitions, 7839 flow. Second operand 18 states and 4511 transitions. [2022-09-20 22:46:09,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 670 places, 708 transitions, 9543 flow [2022-09-20 22:46:09,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 668 places, 708 transitions, 9351 flow, removed 96 selfloop flow, removed 2 redundant places. [2022-09-20 22:46:09,536 INFO L231 Difference]: Finished difference. Result has 676 places, 665 transitions, 8535 flow [2022-09-20 22:46:09,536 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=7649, PETRI_DIFFERENCE_MINUEND_PLACES=651, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8535, PETRI_PLACES=676, PETRI_TRANSITIONS=665} [2022-09-20 22:46:09,537 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 420 predicate places. [2022-09-20 22:46:09,537 INFO L495 AbstractCegarLoop]: Abstraction has has 676 places, 665 transitions, 8535 flow [2022-09-20 22:46:09,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:09,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:46:09,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:46:09,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-09-20 22:46:09,537 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:46:09,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:46:09,538 INFO L85 PathProgramCache]: Analyzing trace with hash -443595957, now seen corresponding path program 16 times [2022-09-20 22:46:09,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:46:09,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377562649] [2022-09-20 22:46:09,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:46:09,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:46:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:46:09,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:46:09,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:46:09,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377562649] [2022-09-20 22:46:09,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377562649] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:46:09,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:46:09,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:46:09,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141367362] [2022-09-20 22:46:09,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:46:09,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:46:09,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:46:09,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:46:09,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:46:09,611 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:46:09,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 676 places, 665 transitions, 8535 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:09,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:46:09,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:46:09,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:46:12,095 INFO L130 PetriNetUnfolder]: 1633/8314 cut-off events. [2022-09-20 22:46:12,096 INFO L131 PetriNetUnfolder]: For 58154/58307 co-relation queries the response was YES. [2022-09-20 22:46:12,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33514 conditions, 8314 events. 1633/8314 cut-off events. For 58154/58307 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 108927 event pairs, 513 based on Foata normal form. 4/8086 useless extension candidates. Maximal degree in co-relation 33331. Up to 1939 conditions per place. [2022-09-20 22:46:12,257 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 319 selfloop transitions, 136 changer transitions 16/723 dead transitions. [2022-09-20 22:46:12,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 723 transitions, 10273 flow [2022-09-20 22:46:12,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 22:46:12,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 22:46:12,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4264 transitions. [2022-09-20 22:46:12,260 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8770053475935828 [2022-09-20 22:46:12,260 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4264 transitions. [2022-09-20 22:46:12,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4264 transitions. [2022-09-20 22:46:12,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:46:12,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4264 transitions. [2022-09-20 22:46:12,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.8235294117647) internal successors, (4264), 17 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:12,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:12,266 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:12,266 INFO L175 Difference]: Start difference. First operand has 676 places, 665 transitions, 8535 flow. Second operand 17 states and 4264 transitions. [2022-09-20 22:46:12,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 690 places, 723 transitions, 10273 flow [2022-09-20 22:46:12,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 723 transitions, 10039 flow, removed 117 selfloop flow, removed 2 redundant places. [2022-09-20 22:46:12,846 INFO L231 Difference]: Finished difference. Result has 696 places, 687 transitions, 9186 flow [2022-09-20 22:46:12,846 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=8345, PETRI_DIFFERENCE_MINUEND_PLACES=672, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9186, PETRI_PLACES=696, PETRI_TRANSITIONS=687} [2022-09-20 22:46:12,847 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 440 predicate places. [2022-09-20 22:46:12,847 INFO L495 AbstractCegarLoop]: Abstraction has has 696 places, 687 transitions, 9186 flow [2022-09-20 22:46:12,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:12,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:46:12,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:46:12,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-09-20 22:46:12,847 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:46:12,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:46:12,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1486406767, now seen corresponding path program 17 times [2022-09-20 22:46:12,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:46:12,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841428454] [2022-09-20 22:46:12,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:46:12,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:46:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:46:12,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:46:12,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:46:12,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841428454] [2022-09-20 22:46:12,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841428454] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:46:12,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:46:12,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:46:12,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709436886] [2022-09-20 22:46:12,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:46:12,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:46:12,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:46:12,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:46:12,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:46:12,929 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:46:12,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 696 places, 687 transitions, 9186 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:12,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:46:12,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:46:12,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:46:15,580 INFO L130 PetriNetUnfolder]: 1670/8569 cut-off events. [2022-09-20 22:46:15,580 INFO L131 PetriNetUnfolder]: For 62986/63139 co-relation queries the response was YES. [2022-09-20 22:46:15,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35220 conditions, 8569 events. 1670/8569 cut-off events. For 62986/63139 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 113009 event pairs, 518 based on Foata normal form. 4/8342 useless extension candidates. Maximal degree in co-relation 35030. Up to 1988 conditions per place. [2022-09-20 22:46:15,749 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 345 selfloop transitions, 130 changer transitions 17/744 dead transitions. [2022-09-20 22:46:15,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 710 places, 744 transitions, 10938 flow [2022-09-20 22:46:15,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 22:46:15,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 22:46:15,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4268 transitions. [2022-09-20 22:46:15,752 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8778280542986425 [2022-09-20 22:46:15,752 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4268 transitions. [2022-09-20 22:46:15,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4268 transitions. [2022-09-20 22:46:15,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:46:15,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4268 transitions. [2022-09-20 22:46:15,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 251.05882352941177) internal successors, (4268), 17 states have internal predecessors, (4268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:15,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:15,757 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:15,757 INFO L175 Difference]: Start difference. First operand has 696 places, 687 transitions, 9186 flow. Second operand 17 states and 4268 transitions. [2022-09-20 22:46:15,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 710 places, 744 transitions, 10938 flow [2022-09-20 22:46:16,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 708 places, 744 transitions, 10790 flow, removed 74 selfloop flow, removed 2 redundant places. [2022-09-20 22:46:16,508 INFO L231 Difference]: Finished difference. Result has 714 places, 708 transitions, 9869 flow [2022-09-20 22:46:16,509 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=9044, PETRI_DIFFERENCE_MINUEND_PLACES=692, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9869, PETRI_PLACES=714, PETRI_TRANSITIONS=708} [2022-09-20 22:46:16,509 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 458 predicate places. [2022-09-20 22:46:16,510 INFO L495 AbstractCegarLoop]: Abstraction has has 714 places, 708 transitions, 9869 flow [2022-09-20 22:46:16,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:16,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:46:16,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:46:16,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-09-20 22:46:16,510 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:46:16,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:46:16,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1479294775, now seen corresponding path program 18 times [2022-09-20 22:46:16,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:46:16,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758149432] [2022-09-20 22:46:16,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:46:16,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:46:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:46:16,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:46:16,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:46:16,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758149432] [2022-09-20 22:46:16,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758149432] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:46:16,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:46:16,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:46:16,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530797135] [2022-09-20 22:46:16,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:46:16,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:46:16,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:46:16,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:46:16,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:46:16,597 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:46:16,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 714 places, 708 transitions, 9869 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:16,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:46:16,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:46:16,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:46:19,172 INFO L130 PetriNetUnfolder]: 1675/8644 cut-off events. [2022-09-20 22:46:19,172 INFO L131 PetriNetUnfolder]: For 65317/65470 co-relation queries the response was YES. [2022-09-20 22:46:19,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36046 conditions, 8644 events. 1675/8644 cut-off events. For 65317/65470 co-relation queries the response was YES. Maximal size of possible extension queue 846. Compared 114497 event pairs, 517 based on Foata normal form. 4/8414 useless extension candidates. Maximal degree in co-relation 35851. Up to 1995 conditions per place. [2022-09-20 22:46:19,363 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 343 selfloop transitions, 135 changer transitions 21/751 dead transitions. [2022-09-20 22:46:19,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 751 transitions, 11335 flow [2022-09-20 22:46:19,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:46:19,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:46:19,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4514 transitions. [2022-09-20 22:46:19,365 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8768453768453769 [2022-09-20 22:46:19,365 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4514 transitions. [2022-09-20 22:46:19,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4514 transitions. [2022-09-20 22:46:19,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:46:19,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4514 transitions. [2022-09-20 22:46:19,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.77777777777777) internal successors, (4514), 18 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:19,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:19,371 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:19,371 INFO L175 Difference]: Start difference. First operand has 714 places, 708 transitions, 9869 flow. Second operand 18 states and 4514 transitions. [2022-09-20 22:46:19,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 751 transitions, 11335 flow [2022-09-20 22:46:20,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 726 places, 751 transitions, 11083 flow, removed 90 selfloop flow, removed 3 redundant places. [2022-09-20 22:46:20,184 INFO L231 Difference]: Finished difference. Result has 731 places, 718 transitions, 10194 flow [2022-09-20 22:46:20,185 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=9639, PETRI_DIFFERENCE_MINUEND_PLACES=709, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10194, PETRI_PLACES=731, PETRI_TRANSITIONS=718} [2022-09-20 22:46:20,185 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 475 predicate places. [2022-09-20 22:46:20,185 INFO L495 AbstractCegarLoop]: Abstraction has has 731 places, 718 transitions, 10194 flow [2022-09-20 22:46:20,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:20,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:46:20,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:46:20,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-09-20 22:46:20,186 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:46:20,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:46:20,186 INFO L85 PathProgramCache]: Analyzing trace with hash -837673595, now seen corresponding path program 19 times [2022-09-20 22:46:20,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:46:20,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905615780] [2022-09-20 22:46:20,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:46:20,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:46:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:46:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:46:20,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:46:20,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905615780] [2022-09-20 22:46:20,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905615780] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:46:20,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:46:20,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:46:20,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871825240] [2022-09-20 22:46:20,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:46:20,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:46:20,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:46:20,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:46:20,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:46:20,251 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:46:20,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 731 places, 718 transitions, 10194 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:20,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:46:20,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:46:20,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:46:23,195 INFO L130 PetriNetUnfolder]: 1678/8904 cut-off events. [2022-09-20 22:46:23,195 INFO L131 PetriNetUnfolder]: For 68881/69034 co-relation queries the response was YES. [2022-09-20 22:46:23,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36507 conditions, 8904 events. 1678/8904 cut-off events. For 68881/69034 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 119163 event pairs, 513 based on Foata normal form. 4/8683 useless extension candidates. Maximal degree in co-relation 36309. Up to 2021 conditions per place. [2022-09-20 22:46:23,361 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 304 selfloop transitions, 185 changer transitions 22/763 dead transitions. [2022-09-20 22:46:23,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 744 places, 763 transitions, 11584 flow [2022-09-20 22:46:23,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 22:46:23,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 22:46:23,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4017 transitions. [2022-09-20 22:46:23,364 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8778409090909091 [2022-09-20 22:46:23,364 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4017 transitions. [2022-09-20 22:46:23,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4017 transitions. [2022-09-20 22:46:23,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:46:23,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4017 transitions. [2022-09-20 22:46:23,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 251.0625) internal successors, (4017), 16 states have internal predecessors, (4017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:23,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:23,369 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:23,369 INFO L175 Difference]: Start difference. First operand has 731 places, 718 transitions, 10194 flow. Second operand 16 states and 4017 transitions. [2022-09-20 22:46:23,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 744 places, 763 transitions, 11584 flow [2022-09-20 22:46:24,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 734 places, 763 transitions, 11437 flow, removed 57 selfloop flow, removed 10 redundant places. [2022-09-20 22:46:24,025 INFO L231 Difference]: Finished difference. Result has 739 places, 724 transitions, 10571 flow [2022-09-20 22:46:24,026 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=10051, PETRI_DIFFERENCE_MINUEND_PLACES=719, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10571, PETRI_PLACES=739, PETRI_TRANSITIONS=724} [2022-09-20 22:46:24,026 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 483 predicate places. [2022-09-20 22:46:24,026 INFO L495 AbstractCegarLoop]: Abstraction has has 739 places, 724 transitions, 10571 flow [2022-09-20 22:46:24,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:24,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:46:24,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:46:24,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-09-20 22:46:24,027 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:46:24,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:46:24,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1264819977, now seen corresponding path program 20 times [2022-09-20 22:46:24,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:46:24,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610002635] [2022-09-20 22:46:24,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:46:24,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:46:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:46:24,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:46:24,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:46:24,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610002635] [2022-09-20 22:46:24,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610002635] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:46:24,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:46:24,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:46:24,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173876243] [2022-09-20 22:46:24,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:46:24,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:46:24,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:46:24,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:46:24,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:46:24,102 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:46:24,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 739 places, 724 transitions, 10571 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:24,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:46:24,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:46:24,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:46:26,830 INFO L130 PetriNetUnfolder]: 1678/8511 cut-off events. [2022-09-20 22:46:26,830 INFO L131 PetriNetUnfolder]: For 71621/71774 co-relation queries the response was YES. [2022-09-20 22:46:26,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36800 conditions, 8511 events. 1678/8511 cut-off events. For 71621/71774 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 111552 event pairs, 522 based on Foata normal form. 4/8279 useless extension candidates. Maximal degree in co-relation 36611. Up to 2017 conditions per place. [2022-09-20 22:46:26,986 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 333 selfloop transitions, 153 changer transitions 30/764 dead transitions. [2022-09-20 22:46:26,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 754 places, 764 transitions, 11962 flow [2022-09-20 22:46:26,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:46:26,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:46:26,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4514 transitions. [2022-09-20 22:46:26,989 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8768453768453769 [2022-09-20 22:46:26,989 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4514 transitions. [2022-09-20 22:46:26,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4514 transitions. [2022-09-20 22:46:26,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:46:26,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4514 transitions. [2022-09-20 22:46:26,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.77777777777777) internal successors, (4514), 18 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:26,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:26,994 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:26,994 INFO L175 Difference]: Start difference. First operand has 739 places, 724 transitions, 10571 flow. Second operand 18 states and 4514 transitions. [2022-09-20 22:46:26,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 754 places, 764 transitions, 11962 flow [2022-09-20 22:46:27,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 749 places, 764 transitions, 11665 flow, removed 28 selfloop flow, removed 5 redundant places. [2022-09-20 22:46:27,688 INFO L231 Difference]: Finished difference. Result has 754 places, 727 transitions, 10790 flow [2022-09-20 22:46:27,688 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=10286, PETRI_DIFFERENCE_MINUEND_PLACES=732, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10790, PETRI_PLACES=754, PETRI_TRANSITIONS=727} [2022-09-20 22:46:27,689 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 498 predicate places. [2022-09-20 22:46:27,689 INFO L495 AbstractCegarLoop]: Abstraction has has 754 places, 727 transitions, 10790 flow [2022-09-20 22:46:27,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:27,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:46:27,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:46:27,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-09-20 22:46:27,690 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:46:27,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:46:27,691 INFO L85 PathProgramCache]: Analyzing trace with hash 364895594, now seen corresponding path program 1 times [2022-09-20 22:46:27,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:46:27,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421961386] [2022-09-20 22:46:27,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:46:27,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:46:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:46:27,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:46:27,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:46:27,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421961386] [2022-09-20 22:46:27,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421961386] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:46:27,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:46:27,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 22:46:27,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534868706] [2022-09-20 22:46:27,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:46:27,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 22:46:27,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:46:27,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 22:46:27,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-09-20 22:46:27,765 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 286 [2022-09-20 22:46:27,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 754 places, 727 transitions, 10790 flow. Second operand has 9 states, 9 states have (on average 249.66666666666666) internal successors, (2247), 9 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:27,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:46:27,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 286 [2022-09-20 22:46:27,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:46:29,218 INFO L130 PetriNetUnfolder]: 606/5569 cut-off events. [2022-09-20 22:46:29,219 INFO L131 PetriNetUnfolder]: For 35165/35502 co-relation queries the response was YES. [2022-09-20 22:46:29,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18788 conditions, 5569 events. 606/5569 cut-off events. For 35165/35502 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 69763 event pairs, 56 based on Foata normal form. 11/5356 useless extension candidates. Maximal degree in co-relation 18596. Up to 282 conditions per place. [2022-09-20 22:46:29,337 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 25 selfloop transitions, 2 changer transitions 46/769 dead transitions. [2022-09-20 22:46:29,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 766 places, 769 transitions, 11059 flow [2022-09-20 22:46:29,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 22:46:29,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 22:46:29,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4273 transitions. [2022-09-20 22:46:29,339 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8788564376799671 [2022-09-20 22:46:29,339 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4273 transitions. [2022-09-20 22:46:29,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4273 transitions. [2022-09-20 22:46:29,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:46:29,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4273 transitions. [2022-09-20 22:46:29,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 251.35294117647058) internal successors, (4273), 17 states have internal predecessors, (4273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:29,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:29,345 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:29,345 INFO L175 Difference]: Start difference. First operand has 754 places, 727 transitions, 10790 flow. Second operand 17 states and 4273 transitions. [2022-09-20 22:46:29,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 766 places, 769 transitions, 11059 flow [2022-09-20 22:46:29,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 739 places, 769 transitions, 10771 flow, removed 71 selfloop flow, removed 27 redundant places. [2022-09-20 22:46:29,869 INFO L231 Difference]: Finished difference. Result has 750 places, 723 transitions, 10505 flow [2022-09-20 22:46:29,869 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=10502, PETRI_DIFFERENCE_MINUEND_PLACES=723, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=725, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10505, PETRI_PLACES=750, PETRI_TRANSITIONS=723} [2022-09-20 22:46:29,870 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 494 predicate places. [2022-09-20 22:46:29,870 INFO L495 AbstractCegarLoop]: Abstraction has has 750 places, 723 transitions, 10505 flow [2022-09-20 22:46:29,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 249.66666666666666) internal successors, (2247), 9 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:29,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:46:29,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:46:29,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-09-20 22:46:29,871 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:46:29,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:46:29,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1013643128, now seen corresponding path program 1 times [2022-09-20 22:46:29,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:46:29,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954539767] [2022-09-20 22:46:29,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:46:29,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:46:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:46:29,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:46:29,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:46:29,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954539767] [2022-09-20 22:46:29,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954539767] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:46:29,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:46:29,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:46:29,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487589796] [2022-09-20 22:46:29,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:46:29,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:46:29,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:46:29,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:46:29,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:46:29,975 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:46:29,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 750 places, 723 transitions, 10505 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:29,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:46:29,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:46:29,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:46:31,900 INFO L130 PetriNetUnfolder]: 1178/6450 cut-off events. [2022-09-20 22:46:31,901 INFO L131 PetriNetUnfolder]: For 39994/40129 co-relation queries the response was YES. [2022-09-20 22:46:32,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23528 conditions, 6450 events. 1178/6450 cut-off events. For 39994/40129 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 81122 event pairs, 417 based on Foata normal form. 16/6293 useless extension candidates. Maximal degree in co-relation 23357. Up to 1876 conditions per place. [2022-09-20 22:46:32,030 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 363 selfloop transitions, 33 changer transitions 28/831 dead transitions. [2022-09-20 22:46:32,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 756 places, 831 transitions, 11816 flow [2022-09-20 22:46:32,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-20 22:46:32,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-20 22:46:32,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6015 transitions. [2022-09-20 22:46:32,033 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8763111888111889 [2022-09-20 22:46:32,033 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6015 transitions. [2022-09-20 22:46:32,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6015 transitions. [2022-09-20 22:46:32,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:46:32,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6015 transitions. [2022-09-20 22:46:32,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 250.625) internal successors, (6015), 24 states have internal predecessors, (6015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:32,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:32,048 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:32,049 INFO L175 Difference]: Start difference. First operand has 750 places, 723 transitions, 10505 flow. Second operand 24 states and 6015 transitions. [2022-09-20 22:46:32,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 756 places, 831 transitions, 11816 flow [2022-09-20 22:46:32,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 741 places, 831 transitions, 11770 flow, removed 22 selfloop flow, removed 15 redundant places. [2022-09-20 22:46:32,465 INFO L231 Difference]: Finished difference. Result has 761 places, 753 transitions, 10789 flow [2022-09-20 22:46:32,465 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=10475, PETRI_DIFFERENCE_MINUEND_PLACES=718, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=723, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=710, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=10789, PETRI_PLACES=761, PETRI_TRANSITIONS=753} [2022-09-20 22:46:32,466 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 505 predicate places. [2022-09-20 22:46:32,466 INFO L495 AbstractCegarLoop]: Abstraction has has 761 places, 753 transitions, 10789 flow [2022-09-20 22:46:32,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:32,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:46:32,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:46:32,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-09-20 22:46:32,466 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:46:32,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:46:32,467 INFO L85 PathProgramCache]: Analyzing trace with hash 292206352, now seen corresponding path program 1 times [2022-09-20 22:46:32,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:46:32,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539681418] [2022-09-20 22:46:32,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:46:32,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:46:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:46:32,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:46:32,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:46:32,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539681418] [2022-09-20 22:46:32,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539681418] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:46:32,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:46:32,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 22:46:32,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345558079] [2022-09-20 22:46:32,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:46:32,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 22:46:32,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:46:32,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 22:46:32,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-09-20 22:46:32,523 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 286 [2022-09-20 22:46:32,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 761 places, 753 transitions, 10789 flow. Second operand has 9 states, 9 states have (on average 249.66666666666666) internal successors, (2247), 9 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:32,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:46:32,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 286 [2022-09-20 22:46:32,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:46:33,777 INFO L130 PetriNetUnfolder]: 516/4233 cut-off events. [2022-09-20 22:46:33,777 INFO L131 PetriNetUnfolder]: For 31697/32015 co-relation queries the response was YES. [2022-09-20 22:46:33,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16859 conditions, 4233 events. 516/4233 cut-off events. For 31697/32015 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 51578 event pairs, 40 based on Foata normal form. 18/4124 useless extension candidates. Maximal degree in co-relation 16676. Up to 232 conditions per place. [2022-09-20 22:46:33,871 INFO L137 encePairwiseOnDemand]: 274/286 looper letters, 26 selfloop transitions, 1 changer transitions 32/785 dead transitions. [2022-09-20 22:46:33,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 771 places, 785 transitions, 10994 flow [2022-09-20 22:46:33,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:46:33,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:46:33,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3271 transitions. [2022-09-20 22:46:33,873 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8797740720817644 [2022-09-20 22:46:33,873 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3271 transitions. [2022-09-20 22:46:33,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3271 transitions. [2022-09-20 22:46:33,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:46:33,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3271 transitions. [2022-09-20 22:46:33,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 251.6153846153846) internal successors, (3271), 13 states have internal predecessors, (3271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:33,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 286.0) internal successors, (4004), 14 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:33,878 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 286.0) internal successors, (4004), 14 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:33,878 INFO L175 Difference]: Start difference. First operand has 761 places, 753 transitions, 10789 flow. Second operand 13 states and 3271 transitions. [2022-09-20 22:46:33,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 771 places, 785 transitions, 10994 flow [2022-09-20 22:46:34,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 769 places, 785 transitions, 10916 flow, removed 39 selfloop flow, removed 2 redundant places. [2022-09-20 22:46:34,233 INFO L231 Difference]: Finished difference. Result has 780 places, 753 transitions, 10736 flow [2022-09-20 22:46:34,234 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=10711, PETRI_DIFFERENCE_MINUEND_PLACES=757, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=753, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=752, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10736, PETRI_PLACES=780, PETRI_TRANSITIONS=753} [2022-09-20 22:46:34,234 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 524 predicate places. [2022-09-20 22:46:34,234 INFO L495 AbstractCegarLoop]: Abstraction has has 780 places, 753 transitions, 10736 flow [2022-09-20 22:46:34,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 249.66666666666666) internal successors, (2247), 9 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:34,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:46:34,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:46:34,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-09-20 22:46:34,235 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:46:34,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:46:34,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1059089106, now seen corresponding path program 2 times [2022-09-20 22:46:34,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:46:34,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35787265] [2022-09-20 22:46:34,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:46:34,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:46:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:46:34,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:46:34,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:46:34,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35787265] [2022-09-20 22:46:34,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35787265] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:46:34,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:46:34,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:46:34,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740816404] [2022-09-20 22:46:34,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:46:34,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:46:34,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:46:34,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:46:34,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:46:34,306 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:46:34,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 780 places, 753 transitions, 10736 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:34,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:46:34,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:46:34,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:46:36,563 INFO L130 PetriNetUnfolder]: 1282/6649 cut-off events. [2022-09-20 22:46:36,563 INFO L131 PetriNetUnfolder]: For 47283/47416 co-relation queries the response was YES. [2022-09-20 22:46:36,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27142 conditions, 6649 events. 1282/6649 cut-off events. For 47283/47416 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 83681 event pairs, 435 based on Foata normal form. 20/6490 useless extension candidates. Maximal degree in co-relation 26957. Up to 2036 conditions per place. [2022-09-20 22:46:36,704 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 365 selfloop transitions, 45 changer transitions 24/841 dead transitions. [2022-09-20 22:46:36,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 791 places, 841 transitions, 12260 flow [2022-09-20 22:46:36,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-20 22:46:36,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-20 22:46:36,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5507 transitions. [2022-09-20 22:46:36,707 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8752383979656707 [2022-09-20 22:46:36,707 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5507 transitions. [2022-09-20 22:46:36,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5507 transitions. [2022-09-20 22:46:36,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:46:36,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5507 transitions. [2022-09-20 22:46:36,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 250.3181818181818) internal successors, (5507), 22 states have internal predecessors, (5507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:36,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:36,713 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:36,713 INFO L175 Difference]: Start difference. First operand has 780 places, 753 transitions, 10736 flow. Second operand 22 states and 5507 transitions. [2022-09-20 22:46:36,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 791 places, 841 transitions, 12260 flow [2022-09-20 22:46:37,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 780 places, 841 transitions, 12233 flow, removed 13 selfloop flow, removed 11 redundant places. [2022-09-20 22:46:37,234 INFO L231 Difference]: Finished difference. Result has 794 places, 784 transitions, 11181 flow [2022-09-20 22:46:37,235 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=10715, PETRI_DIFFERENCE_MINUEND_PLACES=759, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=753, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=730, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=11181, PETRI_PLACES=794, PETRI_TRANSITIONS=784} [2022-09-20 22:46:37,236 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 538 predicate places. [2022-09-20 22:46:37,236 INFO L495 AbstractCegarLoop]: Abstraction has has 794 places, 784 transitions, 11181 flow [2022-09-20 22:46:37,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:37,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:46:37,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:46:37,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-09-20 22:46:37,237 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:46:37,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:46:37,237 INFO L85 PathProgramCache]: Analyzing trace with hash -113700566, now seen corresponding path program 3 times [2022-09-20 22:46:37,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:46:37,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823805161] [2022-09-20 22:46:37,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:46:37,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:46:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:46:37,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:46:37,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:46:37,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823805161] [2022-09-20 22:46:37,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823805161] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:46:37,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:46:37,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:46:37,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248895497] [2022-09-20 22:46:37,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:46:37,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:46:37,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:46:37,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:46:37,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:46:37,320 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:46:37,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 794 places, 784 transitions, 11181 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:37,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:46:37,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:46:37,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:46:39,742 INFO L130 PetriNetUnfolder]: 1408/7211 cut-off events. [2022-09-20 22:46:39,742 INFO L131 PetriNetUnfolder]: For 60015/60170 co-relation queries the response was YES. [2022-09-20 22:46:39,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31057 conditions, 7211 events. 1408/7211 cut-off events. For 60015/60170 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 91702 event pairs, 539 based on Foata normal form. 19/7038 useless extension candidates. Maximal degree in co-relation 30866. Up to 2097 conditions per place. [2022-09-20 22:46:39,911 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 399 selfloop transitions, 47 changer transitions 22/875 dead transitions. [2022-09-20 22:46:39,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 811 places, 875 transitions, 12995 flow [2022-09-20 22:46:39,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 22:46:39,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 22:46:39,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5012 transitions. [2022-09-20 22:46:39,914 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8762237762237762 [2022-09-20 22:46:39,914 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5012 transitions. [2022-09-20 22:46:39,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5012 transitions. [2022-09-20 22:46:39,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:46:39,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5012 transitions. [2022-09-20 22:46:39,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 250.6) internal successors, (5012), 20 states have internal predecessors, (5012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:39,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:39,920 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:39,920 INFO L175 Difference]: Start difference. First operand has 794 places, 784 transitions, 11181 flow. Second operand 20 states and 5012 transitions. [2022-09-20 22:46:39,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 811 places, 875 transitions, 12995 flow [2022-09-20 22:46:40,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 809 places, 875 transitions, 12767 flow, removed 114 selfloop flow, removed 2 redundant places. [2022-09-20 22:46:40,758 INFO L231 Difference]: Finished difference. Result has 824 places, 820 transitions, 11596 flow [2022-09-20 22:46:40,758 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=11007, PETRI_DIFFERENCE_MINUEND_PLACES=790, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=784, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=757, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=11596, PETRI_PLACES=824, PETRI_TRANSITIONS=820} [2022-09-20 22:46:40,759 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 568 predicate places. [2022-09-20 22:46:40,759 INFO L495 AbstractCegarLoop]: Abstraction has has 824 places, 820 transitions, 11596 flow [2022-09-20 22:46:40,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:40,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:46:40,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:46:40,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-09-20 22:46:40,759 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:46:40,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:46:40,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1809696848, now seen corresponding path program 4 times [2022-09-20 22:46:40,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:46:40,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614684626] [2022-09-20 22:46:40,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:46:40,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:46:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:46:40,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:46:40,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:46:40,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614684626] [2022-09-20 22:46:40,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614684626] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:46:40,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:46:40,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:46:40,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365627444] [2022-09-20 22:46:40,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:46:40,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:46:40,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:46:40,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:46:40,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:46:40,831 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:46:40,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 824 places, 820 transitions, 11596 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:40,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:46:40,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:46:40,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:46:43,567 INFO L130 PetriNetUnfolder]: 1453/7476 cut-off events. [2022-09-20 22:46:43,567 INFO L131 PetriNetUnfolder]: For 71903/72051 co-relation queries the response was YES. [2022-09-20 22:46:43,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33124 conditions, 7476 events. 1453/7476 cut-off events. For 71903/72051 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 96241 event pairs, 417 based on Foata normal form. 11/7296 useless extension candidates. Maximal degree in co-relation 32919. Up to 1912 conditions per place. [2022-09-20 22:46:43,742 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 432 selfloop transitions, 84 changer transitions 26/949 dead transitions. [2022-09-20 22:46:43,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 845 places, 949 transitions, 13837 flow [2022-09-20 22:46:43,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-20 22:46:43,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-20 22:46:43,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6012 transitions. [2022-09-20 22:46:43,745 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8758741258741258 [2022-09-20 22:46:43,745 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6012 transitions. [2022-09-20 22:46:43,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6012 transitions. [2022-09-20 22:46:43,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:46:43,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6012 transitions. [2022-09-20 22:46:43,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 250.5) internal successors, (6012), 24 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:43,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:43,753 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 286.0) internal successors, (7150), 25 states have internal predecessors, (7150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:43,753 INFO L175 Difference]: Start difference. First operand has 824 places, 820 transitions, 11596 flow. Second operand 24 states and 6012 transitions. [2022-09-20 22:46:43,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 845 places, 949 transitions, 13837 flow [2022-09-20 22:46:44,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 843 places, 949 transitions, 13595 flow, removed 121 selfloop flow, removed 2 redundant places. [2022-09-20 22:46:44,491 INFO L231 Difference]: Finished difference. Result has 863 places, 849 transitions, 12193 flow [2022-09-20 22:46:44,491 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=11394, PETRI_DIFFERENCE_MINUEND_PLACES=820, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=820, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=751, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=12193, PETRI_PLACES=863, PETRI_TRANSITIONS=849} [2022-09-20 22:46:44,492 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 607 predicate places. [2022-09-20 22:46:44,492 INFO L495 AbstractCegarLoop]: Abstraction has has 863 places, 849 transitions, 12193 flow [2022-09-20 22:46:44,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:44,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:46:44,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:46:44,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-09-20 22:46:44,492 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:46:44,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:46:44,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1942338272, now seen corresponding path program 5 times [2022-09-20 22:46:44,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:46:44,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761600117] [2022-09-20 22:46:44,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:46:44,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:46:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:46:44,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:46:44,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:46:44,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761600117] [2022-09-20 22:46:44,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761600117] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:46:44,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:46:44,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:46:44,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370228014] [2022-09-20 22:46:44,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:46:44,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:46:44,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:46:44,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:46:44,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:46:44,576 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:46:44,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 863 places, 849 transitions, 12193 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:44,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:46:44,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:46:44,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:46:47,555 INFO L130 PetriNetUnfolder]: 1477/7710 cut-off events. [2022-09-20 22:46:47,556 INFO L131 PetriNetUnfolder]: For 79109/79310 co-relation queries the response was YES. [2022-09-20 22:46:47,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34614 conditions, 7710 events. 1477/7710 cut-off events. For 79109/79310 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 100379 event pairs, 479 based on Foata normal form. 56/7585 useless extension candidates. Maximal degree in co-relation 34390. Up to 2240 conditions per place. [2022-09-20 22:46:47,756 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 412 selfloop transitions, 80 changer transitions 14/913 dead transitions. [2022-09-20 22:46:47,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 876 places, 913 transitions, 14025 flow [2022-09-20 22:46:47,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 22:46:47,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 22:46:47,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4014 transitions. [2022-09-20 22:46:47,758 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8771853146853147 [2022-09-20 22:46:47,758 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4014 transitions. [2022-09-20 22:46:47,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4014 transitions. [2022-09-20 22:46:47,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:46:47,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4014 transitions. [2022-09-20 22:46:47,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 250.875) internal successors, (4014), 16 states have internal predecessors, (4014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:47,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:47,763 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:47,763 INFO L175 Difference]: Start difference. First operand has 863 places, 849 transitions, 12193 flow. Second operand 16 states and 4014 transitions. [2022-09-20 22:46:47,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 876 places, 913 transitions, 14025 flow [2022-09-20 22:46:48,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 874 places, 913 transitions, 13703 flow, removed 161 selfloop flow, removed 2 redundant places. [2022-09-20 22:46:48,697 INFO L231 Difference]: Finished difference. Result has 882 places, 866 transitions, 12471 flow [2022-09-20 22:46:48,697 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=11993, PETRI_DIFFERENCE_MINUEND_PLACES=859, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=849, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=781, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=12471, PETRI_PLACES=882, PETRI_TRANSITIONS=866} [2022-09-20 22:46:48,698 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 626 predicate places. [2022-09-20 22:46:48,698 INFO L495 AbstractCegarLoop]: Abstraction has has 882 places, 866 transitions, 12471 flow [2022-09-20 22:46:48,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:48,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:46:48,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:46:48,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-09-20 22:46:48,698 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:46:48,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:46:48,699 INFO L85 PathProgramCache]: Analyzing trace with hash -602187274, now seen corresponding path program 6 times [2022-09-20 22:46:48,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:46:48,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828762408] [2022-09-20 22:46:48,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:46:48,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:46:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:46:48,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:46:48,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:46:48,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828762408] [2022-09-20 22:46:48,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828762408] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:46:48,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:46:48,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:46:48,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439341066] [2022-09-20 22:46:48,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:46:48,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:46:48,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:46:48,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:46:48,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:46:48,771 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:46:48,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 882 places, 866 transitions, 12471 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:48,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:46:48,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:46:48,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:46:51,988 INFO L130 PetriNetUnfolder]: 1537/7969 cut-off events. [2022-09-20 22:46:51,989 INFO L131 PetriNetUnfolder]: For 74184/74354 co-relation queries the response was YES. [2022-09-20 22:46:52,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35364 conditions, 7969 events. 1537/7969 cut-off events. For 74184/74354 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 104479 event pairs, 513 based on Foata normal form. 13/7797 useless extension candidates. Maximal degree in co-relation 35133. Up to 2278 conditions per place. [2022-09-20 22:46:52,191 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 439 selfloop transitions, 78 changer transitions 16/940 dead transitions. [2022-09-20 22:46:52,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 896 places, 940 transitions, 14527 flow [2022-09-20 22:46:52,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 22:46:52,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 22:46:52,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4265 transitions. [2022-09-20 22:46:52,193 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8772110242698478 [2022-09-20 22:46:52,193 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4265 transitions. [2022-09-20 22:46:52,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4265 transitions. [2022-09-20 22:46:52,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:46:52,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4265 transitions. [2022-09-20 22:46:52,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.88235294117646) internal successors, (4265), 17 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:52,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:52,198 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:52,198 INFO L175 Difference]: Start difference. First operand has 882 places, 866 transitions, 12471 flow. Second operand 17 states and 4265 transitions. [2022-09-20 22:46:52,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 896 places, 940 transitions, 14527 flow [2022-09-20 22:46:53,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 893 places, 940 transitions, 14374 flow, removed 61 selfloop flow, removed 3 redundant places. [2022-09-20 22:46:53,098 INFO L231 Difference]: Finished difference. Result has 904 places, 894 transitions, 13220 flow [2022-09-20 22:46:53,099 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=12350, PETRI_DIFFERENCE_MINUEND_PLACES=877, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=866, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=807, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=13220, PETRI_PLACES=904, PETRI_TRANSITIONS=894} [2022-09-20 22:46:53,100 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 648 predicate places. [2022-09-20 22:46:53,100 INFO L495 AbstractCegarLoop]: Abstraction has has 904 places, 894 transitions, 13220 flow [2022-09-20 22:46:53,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:53,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:46:53,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:46:53,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-09-20 22:46:53,106 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:46:53,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:46:53,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1381779982, now seen corresponding path program 7 times [2022-09-20 22:46:53,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:46:53,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622560879] [2022-09-20 22:46:53,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:46:53,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:46:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:46:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:46:53,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:46:53,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622560879] [2022-09-20 22:46:53,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622560879] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:46:53,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:46:53,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:46:53,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841752381] [2022-09-20 22:46:53,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:46:53,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:46:53,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:46:53,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:46:53,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:46:53,176 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:46:53,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 904 places, 894 transitions, 13220 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:53,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:46:53,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:46:53,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:46:56,492 INFO L130 PetriNetUnfolder]: 1575/8350 cut-off events. [2022-09-20 22:46:56,492 INFO L131 PetriNetUnfolder]: For 82497/82667 co-relation queries the response was YES. [2022-09-20 22:46:56,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37370 conditions, 8350 events. 1575/8350 cut-off events. For 82497/82667 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 111377 event pairs, 495 based on Foata normal form. 13/8175 useless extension candidates. Maximal degree in co-relation 37130. Up to 2332 conditions per place. [2022-09-20 22:46:56,747 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 440 selfloop transitions, 102 changer transitions 19/968 dead transitions. [2022-09-20 22:46:56,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 921 places, 968 transitions, 15291 flow [2022-09-20 22:46:56,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 22:46:56,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 22:46:56,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5008 transitions. [2022-09-20 22:46:56,749 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8755244755244755 [2022-09-20 22:46:56,749 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5008 transitions. [2022-09-20 22:46:56,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5008 transitions. [2022-09-20 22:46:56,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:46:56,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5008 transitions. [2022-09-20 22:46:56,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 250.4) internal successors, (5008), 20 states have internal predecessors, (5008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:56,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:56,907 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 286.0) internal successors, (6006), 21 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:56,907 INFO L175 Difference]: Start difference. First operand has 904 places, 894 transitions, 13220 flow. Second operand 20 states and 5008 transitions. [2022-09-20 22:46:56,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 921 places, 968 transitions, 15291 flow [2022-09-20 22:46:57,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 919 places, 968 transitions, 14829 flow, removed 231 selfloop flow, removed 2 redundant places. [2022-09-20 22:46:57,870 INFO L231 Difference]: Finished difference. Result has 932 places, 920 transitions, 13641 flow [2022-09-20 22:46:57,871 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=12884, PETRI_DIFFERENCE_MINUEND_PLACES=900, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=894, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=809, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=13641, PETRI_PLACES=932, PETRI_TRANSITIONS=920} [2022-09-20 22:46:57,871 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 676 predicate places. [2022-09-20 22:46:57,871 INFO L495 AbstractCegarLoop]: Abstraction has has 932 places, 920 transitions, 13641 flow [2022-09-20 22:46:57,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:57,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:46:57,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:46:57,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-09-20 22:46:57,872 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:46:57,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:46:57,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1027282068, now seen corresponding path program 8 times [2022-09-20 22:46:57,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:46:57,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481560385] [2022-09-20 22:46:57,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:46:57,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:46:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:46:57,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:46:57,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:46:57,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481560385] [2022-09-20 22:46:57,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481560385] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:46:57,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:46:57,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:46:57,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972228801] [2022-09-20 22:46:57,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:46:57,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:46:57,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:46:57,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:46:57,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:46:57,944 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:46:57,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 932 places, 920 transitions, 13641 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:46:57,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:46:57,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:46:57,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:01,419 INFO L130 PetriNetUnfolder]: 1568/8318 cut-off events. [2022-09-20 22:47:01,419 INFO L131 PetriNetUnfolder]: For 71572/71749 co-relation queries the response was YES. [2022-09-20 22:47:01,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36756 conditions, 8318 events. 1568/8318 cut-off events. For 71572/71749 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 110516 event pairs, 472 based on Foata normal form. 52/8179 useless extension candidates. Maximal degree in co-relation 36504. Up to 2326 conditions per place. [2022-09-20 22:47:01,684 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 440 selfloop transitions, 109 changer transitions 23/979 dead transitions. [2022-09-20 22:47:01,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 947 places, 979 transitions, 15449 flow [2022-09-20 22:47:01,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:47:01,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:47:01,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4511 transitions. [2022-09-20 22:47:01,686 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8762626262626263 [2022-09-20 22:47:01,686 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4511 transitions. [2022-09-20 22:47:01,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4511 transitions. [2022-09-20 22:47:01,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:01,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4511 transitions. [2022-09-20 22:47:01,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:01,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:01,692 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:01,692 INFO L175 Difference]: Start difference. First operand has 932 places, 920 transitions, 13641 flow. Second operand 18 states and 4511 transitions. [2022-09-20 22:47:01,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 947 places, 979 transitions, 15449 flow [2022-09-20 22:47:02,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 944 places, 979 transitions, 15260 flow, removed 74 selfloop flow, removed 3 redundant places. [2022-09-20 22:47:02,688 INFO L231 Difference]: Finished difference. Result has 951 places, 929 transitions, 13954 flow [2022-09-20 22:47:02,689 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=13511, PETRI_DIFFERENCE_MINUEND_PLACES=927, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=920, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=815, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=13954, PETRI_PLACES=951, PETRI_TRANSITIONS=929} [2022-09-20 22:47:02,689 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 695 predicate places. [2022-09-20 22:47:02,689 INFO L495 AbstractCegarLoop]: Abstraction has has 951 places, 929 transitions, 13954 flow [2022-09-20 22:47:02,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:02,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:02,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:02,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-09-20 22:47:02,690 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:47:02,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:02,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1425240996, now seen corresponding path program 9 times [2022-09-20 22:47:02,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:02,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731204749] [2022-09-20 22:47:02,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:02,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:02,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:02,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:02,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731204749] [2022-09-20 22:47:02,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731204749] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:02,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:02,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:47:02,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911813875] [2022-09-20 22:47:02,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:02,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:47:02,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:02,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:47:02,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:47:02,770 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:47:02,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 951 places, 929 transitions, 13954 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:02,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:02,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:47:02,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:06,246 INFO L130 PetriNetUnfolder]: 1606/8691 cut-off events. [2022-09-20 22:47:06,246 INFO L131 PetriNetUnfolder]: For 75897/76066 co-relation queries the response was YES. [2022-09-20 22:47:06,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38269 conditions, 8691 events. 1606/8691 cut-off events. For 75897/76066 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 116569 event pairs, 481 based on Foata normal form. 32/8536 useless extension candidates. Maximal degree in co-relation 38012. Up to 2281 conditions per place. [2022-09-20 22:47:06,636 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 472 selfloop transitions, 100 changer transitions 23/1002 dead transitions. [2022-09-20 22:47:06,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 969 places, 1002 transitions, 16088 flow [2022-09-20 22:47:06,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-20 22:47:06,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-20 22:47:06,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5261 transitions. [2022-09-20 22:47:06,639 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.875957375957376 [2022-09-20 22:47:06,639 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5261 transitions. [2022-09-20 22:47:06,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5261 transitions. [2022-09-20 22:47:06,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:06,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5261 transitions. [2022-09-20 22:47:06,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 250.52380952380952) internal successors, (5261), 21 states have internal predecessors, (5261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:06,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:06,645 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:06,645 INFO L175 Difference]: Start difference. First operand has 951 places, 929 transitions, 13954 flow. Second operand 21 states and 5261 transitions. [2022-09-20 22:47:06,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 969 places, 1002 transitions, 16088 flow [2022-09-20 22:47:07,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 964 places, 1002 transitions, 15954 flow, removed 45 selfloop flow, removed 5 redundant places. [2022-09-20 22:47:07,648 INFO L231 Difference]: Finished difference. Result has 978 places, 954 transitions, 14687 flow [2022-09-20 22:47:07,649 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=13827, PETRI_DIFFERENCE_MINUEND_PLACES=944, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=929, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=844, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=14687, PETRI_PLACES=978, PETRI_TRANSITIONS=954} [2022-09-20 22:47:07,649 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 722 predicate places. [2022-09-20 22:47:07,649 INFO L495 AbstractCegarLoop]: Abstraction has has 978 places, 954 transitions, 14687 flow [2022-09-20 22:47:07,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:07,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:07,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:07,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-09-20 22:47:07,650 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:47:07,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:07,650 INFO L85 PathProgramCache]: Analyzing trace with hash -729591848, now seen corresponding path program 10 times [2022-09-20 22:47:07,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:07,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131109780] [2022-09-20 22:47:07,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:07,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:07,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:07,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:07,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131109780] [2022-09-20 22:47:07,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131109780] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:07,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:07,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:47:07,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726694531] [2022-09-20 22:47:07,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:07,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:47:07,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:07,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:47:07,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:47:07,716 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:47:07,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 978 places, 954 transitions, 14687 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:07,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:07,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:47:07,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:11,385 INFO L130 PetriNetUnfolder]: 1629/8766 cut-off events. [2022-09-20 22:47:11,386 INFO L131 PetriNetUnfolder]: For 82850/83025 co-relation queries the response was YES. [2022-09-20 22:47:11,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39776 conditions, 8766 events. 1629/8766 cut-off events. For 82850/83025 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 117533 event pairs, 505 based on Foata normal form. 32/8609 useless extension candidates. Maximal degree in co-relation 39508. Up to 2403 conditions per place. [2022-09-20 22:47:11,636 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 482 selfloop transitions, 106 changer transitions 17/1012 dead transitions. [2022-09-20 22:47:11,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 993 places, 1012 transitions, 16679 flow [2022-09-20 22:47:11,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:47:11,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:47:11,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4515 transitions. [2022-09-20 22:47:11,638 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.877039627039627 [2022-09-20 22:47:11,638 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4515 transitions. [2022-09-20 22:47:11,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4515 transitions. [2022-09-20 22:47:11,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:11,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4515 transitions. [2022-09-20 22:47:11,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.83333333333334) internal successors, (4515), 18 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:11,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:11,643 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:11,644 INFO L175 Difference]: Start difference. First operand has 978 places, 954 transitions, 14687 flow. Second operand 18 states and 4515 transitions. [2022-09-20 22:47:11,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 993 places, 1012 transitions, 16679 flow [2022-09-20 22:47:12,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 991 places, 1012 transitions, 16409 flow, removed 135 selfloop flow, removed 2 redundant places. [2022-09-20 22:47:12,617 INFO L231 Difference]: Finished difference. Result has 997 places, 974 transitions, 15200 flow [2022-09-20 22:47:12,618 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=14459, PETRI_DIFFERENCE_MINUEND_PLACES=974, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=954, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=862, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=15200, PETRI_PLACES=997, PETRI_TRANSITIONS=974} [2022-09-20 22:47:12,618 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 741 predicate places. [2022-09-20 22:47:12,618 INFO L495 AbstractCegarLoop]: Abstraction has has 997 places, 974 transitions, 15200 flow [2022-09-20 22:47:12,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:12,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:12,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:12,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-09-20 22:47:12,619 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:47:12,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:12,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1657524250, now seen corresponding path program 11 times [2022-09-20 22:47:12,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:12,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310895434] [2022-09-20 22:47:12,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:12,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:12,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:12,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:12,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310895434] [2022-09-20 22:47:12,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310895434] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:12,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:12,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:47:12,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293313251] [2022-09-20 22:47:12,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:12,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:47:12,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:12,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:47:12,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:47:12,698 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:47:12,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 997 places, 974 transitions, 15200 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:12,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:12,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:47:12,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:16,452 INFO L130 PetriNetUnfolder]: 1648/9039 cut-off events. [2022-09-20 22:47:16,452 INFO L131 PetriNetUnfolder]: For 86205/86387 co-relation queries the response was YES. [2022-09-20 22:47:16,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40618 conditions, 9039 events. 1648/9039 cut-off events. For 86205/86387 co-relation queries the response was YES. Maximal size of possible extension queue 811. Compared 122817 event pairs, 515 based on Foata normal form. 13/8865 useless extension candidates. Maximal degree in co-relation 40345. Up to 2442 conditions per place. [2022-09-20 22:47:16,757 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 481 selfloop transitions, 112 changer transitions 19/1019 dead transitions. [2022-09-20 22:47:16,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1011 places, 1019 transitions, 16907 flow [2022-09-20 22:47:16,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 22:47:16,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 22:47:16,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4265 transitions. [2022-09-20 22:47:16,759 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8772110242698478 [2022-09-20 22:47:16,759 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4265 transitions. [2022-09-20 22:47:16,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4265 transitions. [2022-09-20 22:47:16,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:16,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4265 transitions. [2022-09-20 22:47:16,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.88235294117646) internal successors, (4265), 17 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:16,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:16,765 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:16,765 INFO L175 Difference]: Start difference. First operand has 997 places, 974 transitions, 15200 flow. Second operand 17 states and 4265 transitions. [2022-09-20 22:47:16,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1011 places, 1019 transitions, 16907 flow [2022-09-20 22:47:17,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1005 places, 1019 transitions, 16674 flow, removed 109 selfloop flow, removed 6 redundant places. [2022-09-20 22:47:17,866 INFO L231 Difference]: Finished difference. Result has 1011 places, 986 transitions, 15488 flow [2022-09-20 22:47:17,867 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=14975, PETRI_DIFFERENCE_MINUEND_PLACES=989, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=974, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=870, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=15488, PETRI_PLACES=1011, PETRI_TRANSITIONS=986} [2022-09-20 22:47:17,867 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 755 predicate places. [2022-09-20 22:47:17,867 INFO L495 AbstractCegarLoop]: Abstraction has has 1011 places, 986 transitions, 15488 flow [2022-09-20 22:47:17,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:17,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:17,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:17,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-09-20 22:47:17,868 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:47:17,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:17,868 INFO L85 PathProgramCache]: Analyzing trace with hash -92574006, now seen corresponding path program 12 times [2022-09-20 22:47:17,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:17,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093926184] [2022-09-20 22:47:17,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:17,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:17,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:17,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:17,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093926184] [2022-09-20 22:47:17,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093926184] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:17,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:17,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:47:17,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197462454] [2022-09-20 22:47:17,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:17,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:47:17,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:17,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:47:17,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:47:17,942 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:47:17,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1011 places, 986 transitions, 15488 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:17,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:17,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:47:17,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:21,848 INFO L130 PetriNetUnfolder]: 1645/9102 cut-off events. [2022-09-20 22:47:21,849 INFO L131 PetriNetUnfolder]: For 87396/87578 co-relation queries the response was YES. [2022-09-20 22:47:22,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40734 conditions, 9102 events. 1645/9102 cut-off events. For 87396/87578 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 123509 event pairs, 508 based on Foata normal form. 13/8929 useless extension candidates. Maximal degree in co-relation 40460. Up to 2449 conditions per place. [2022-09-20 22:47:22,135 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 468 selfloop transitions, 130 changer transitions 22/1027 dead transitions. [2022-09-20 22:47:22,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1026 places, 1027 transitions, 17118 flow [2022-09-20 22:47:22,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:47:22,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:47:22,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4511 transitions. [2022-09-20 22:47:22,137 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8762626262626263 [2022-09-20 22:47:22,137 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4511 transitions. [2022-09-20 22:47:22,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4511 transitions. [2022-09-20 22:47:22,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:22,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4511 transitions. [2022-09-20 22:47:22,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:22,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:22,143 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:22,143 INFO L175 Difference]: Start difference. First operand has 1011 places, 986 transitions, 15488 flow. Second operand 18 states and 4511 transitions. [2022-09-20 22:47:22,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1026 places, 1027 transitions, 17118 flow [2022-09-20 22:47:23,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1023 places, 1027 transitions, 17020 flow, removed 24 selfloop flow, removed 3 redundant places. [2022-09-20 22:47:23,169 INFO L231 Difference]: Finished difference. Result has 1028 places, 993 transitions, 15847 flow [2022-09-20 22:47:23,169 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=15392, PETRI_DIFFERENCE_MINUEND_PLACES=1006, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=986, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=859, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=15847, PETRI_PLACES=1028, PETRI_TRANSITIONS=993} [2022-09-20 22:47:23,170 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 772 predicate places. [2022-09-20 22:47:23,170 INFO L495 AbstractCegarLoop]: Abstraction has has 1028 places, 993 transitions, 15847 flow [2022-09-20 22:47:23,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:23,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:23,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:23,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-09-20 22:47:23,170 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:47:23,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:23,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1492738630, now seen corresponding path program 13 times [2022-09-20 22:47:23,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:23,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725931289] [2022-09-20 22:47:23,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:23,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:23,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:23,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:23,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725931289] [2022-09-20 22:47:23,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725931289] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:23,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:23,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:47:23,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90029358] [2022-09-20 22:47:23,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:23,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:47:23,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:23,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:47:23,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:47:23,235 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:47:23,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1028 places, 993 transitions, 15847 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:23,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:23,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:47:23,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:27,483 INFO L130 PetriNetUnfolder]: 1741/9749 cut-off events. [2022-09-20 22:47:27,483 INFO L131 PetriNetUnfolder]: For 98828/99002 co-relation queries the response was YES. [2022-09-20 22:47:27,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43581 conditions, 9749 events. 1741/9749 cut-off events. For 98828/99002 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 133851 event pairs, 503 based on Foata normal form. 11/9571 useless extension candidates. Maximal degree in co-relation 43304. Up to 2426 conditions per place. [2022-09-20 22:47:27,807 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 509 selfloop transitions, 143 changer transitions 23/1082 dead transitions. [2022-09-20 22:47:27,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1047 places, 1082 transitions, 18273 flow [2022-09-20 22:47:27,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-20 22:47:27,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-20 22:47:27,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5505 transitions. [2022-09-20 22:47:27,810 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8749205340114431 [2022-09-20 22:47:27,810 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5505 transitions. [2022-09-20 22:47:27,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5505 transitions. [2022-09-20 22:47:27,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:27,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5505 transitions. [2022-09-20 22:47:27,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 250.22727272727272) internal successors, (5505), 22 states have internal predecessors, (5505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:27,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:27,817 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 286.0) internal successors, (6578), 23 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:27,817 INFO L175 Difference]: Start difference. First operand has 1028 places, 993 transitions, 15847 flow. Second operand 22 states and 5505 transitions. [2022-09-20 22:47:27,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1047 places, 1082 transitions, 18273 flow [2022-09-20 22:47:28,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1040 places, 1082 transitions, 18119 flow, removed 38 selfloop flow, removed 7 redundant places. [2022-09-20 22:47:28,951 INFO L231 Difference]: Finished difference. Result has 1054 places, 1026 transitions, 16774 flow [2022-09-20 22:47:28,951 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=15704, PETRI_DIFFERENCE_MINUEND_PLACES=1019, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=993, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=871, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=16774, PETRI_PLACES=1054, PETRI_TRANSITIONS=1026} [2022-09-20 22:47:28,952 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 798 predicate places. [2022-09-20 22:47:28,952 INFO L495 AbstractCegarLoop]: Abstraction has has 1054 places, 1026 transitions, 16774 flow [2022-09-20 22:47:28,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:28,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:28,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:28,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-09-20 22:47:28,952 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:47:28,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:28,953 INFO L85 PathProgramCache]: Analyzing trace with hash 84925006, now seen corresponding path program 14 times [2022-09-20 22:47:28,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:28,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051563909] [2022-09-20 22:47:28,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:28,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:29,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:29,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:29,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051563909] [2022-09-20 22:47:29,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051563909] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:29,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:29,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:47:29,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844937664] [2022-09-20 22:47:29,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:29,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:47:29,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:29,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:47:29,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:47:29,018 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:47:29,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1054 places, 1026 transitions, 16774 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:29,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:29,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:47:29,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:33,520 INFO L130 PetriNetUnfolder]: 1775/9826 cut-off events. [2022-09-20 22:47:33,520 INFO L131 PetriNetUnfolder]: For 108371/108537 co-relation queries the response was YES. [2022-09-20 22:47:33,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45447 conditions, 9826 events. 1775/9826 cut-off events. For 108371/108537 co-relation queries the response was YES. Maximal size of possible extension queue 884. Compared 134982 event pairs, 565 based on Foata normal form. 11/9647 useless extension candidates. Maximal degree in co-relation 45162. Up to 2451 conditions per place. [2022-09-20 22:47:33,847 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 561 selfloop transitions, 106 changer transitions 21/1095 dead transitions. [2022-09-20 22:47:33,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1072 places, 1095 transitions, 19089 flow [2022-09-20 22:47:33,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-20 22:47:33,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-20 22:47:33,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5258 transitions. [2022-09-20 22:47:33,850 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8754578754578755 [2022-09-20 22:47:33,850 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5258 transitions. [2022-09-20 22:47:33,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5258 transitions. [2022-09-20 22:47:33,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:33,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5258 transitions. [2022-09-20 22:47:33,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 250.38095238095238) internal successors, (5258), 21 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:33,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:33,856 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 286.0) internal successors, (6292), 22 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:33,856 INFO L175 Difference]: Start difference. First operand has 1054 places, 1026 transitions, 16774 flow. Second operand 21 states and 5258 transitions. [2022-09-20 22:47:33,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1072 places, 1095 transitions, 19089 flow [2022-09-20 22:47:35,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1070 places, 1095 transitions, 18891 flow, removed 99 selfloop flow, removed 2 redundant places. [2022-09-20 22:47:35,208 INFO L231 Difference]: Finished difference. Result has 1084 places, 1051 transitions, 17479 flow [2022-09-20 22:47:35,208 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=16590, PETRI_DIFFERENCE_MINUEND_PLACES=1050, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1026, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=935, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=17479, PETRI_PLACES=1084, PETRI_TRANSITIONS=1051} [2022-09-20 22:47:35,209 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 828 predicate places. [2022-09-20 22:47:35,209 INFO L495 AbstractCegarLoop]: Abstraction has has 1084 places, 1051 transitions, 17479 flow [2022-09-20 22:47:35,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:35,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:35,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:35,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-09-20 22:47:35,210 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:47:35,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:35,210 INFO L85 PathProgramCache]: Analyzing trace with hash 336172978, now seen corresponding path program 15 times [2022-09-20 22:47:35,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:35,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139885973] [2022-09-20 22:47:35,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:35,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:35,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:35,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:35,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139885973] [2022-09-20 22:47:35,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139885973] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:35,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:35,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:47:35,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844739855] [2022-09-20 22:47:35,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:35,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:47:35,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:35,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:47:35,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:47:35,286 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:47:35,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1084 places, 1051 transitions, 17479 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:35,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:35,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:47:35,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:39,946 INFO L130 PetriNetUnfolder]: 1798/10059 cut-off events. [2022-09-20 22:47:39,946 INFO L131 PetriNetUnfolder]: For 114503/114669 co-relation queries the response was YES. [2022-09-20 22:47:40,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46762 conditions, 10059 events. 1798/10059 cut-off events. For 114503/114669 co-relation queries the response was YES. Maximal size of possible extension queue 906. Compared 138953 event pairs, 504 based on Foata normal form. 11/9885 useless extension candidates. Maximal degree in co-relation 46464. Up to 2522 conditions per place. [2022-09-20 22:47:40,285 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 532 selfloop transitions, 161 changer transitions 18/1118 dead transitions. [2022-09-20 22:47:40,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1099 places, 1118 transitions, 19702 flow [2022-09-20 22:47:40,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:47:40,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:47:40,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4511 transitions. [2022-09-20 22:47:40,288 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8762626262626263 [2022-09-20 22:47:40,288 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4511 transitions. [2022-09-20 22:47:40,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4511 transitions. [2022-09-20 22:47:40,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:40,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4511 transitions. [2022-09-20 22:47:40,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:40,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:40,294 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:40,294 INFO L175 Difference]: Start difference. First operand has 1084 places, 1051 transitions, 17479 flow. Second operand 18 states and 4511 transitions. [2022-09-20 22:47:40,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1099 places, 1118 transitions, 19702 flow [2022-09-20 22:47:41,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1097 places, 1118 transitions, 19502 flow, removed 100 selfloop flow, removed 2 redundant places. [2022-09-20 22:47:41,647 INFO L231 Difference]: Finished difference. Result has 1105 places, 1073 transitions, 18162 flow [2022-09-20 22:47:41,648 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=17281, PETRI_DIFFERENCE_MINUEND_PLACES=1080, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1051, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=904, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=18162, PETRI_PLACES=1105, PETRI_TRANSITIONS=1073} [2022-09-20 22:47:41,648 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 849 predicate places. [2022-09-20 22:47:41,648 INFO L495 AbstractCegarLoop]: Abstraction has has 1105 places, 1073 transitions, 18162 flow [2022-09-20 22:47:41,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:41,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:41,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:41,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-09-20 22:47:41,649 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:47:41,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:41,649 INFO L85 PathProgramCache]: Analyzing trace with hash -506762258, now seen corresponding path program 16 times [2022-09-20 22:47:41,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:41,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673455973] [2022-09-20 22:47:41,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:41,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:41,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:41,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:41,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673455973] [2022-09-20 22:47:41,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673455973] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:41,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:41,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:47:41,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252146220] [2022-09-20 22:47:41,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:41,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:47:41,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:41,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:47:41,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:47:41,730 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:47:41,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1105 places, 1073 transitions, 18162 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:41,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:41,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:47:41,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:46,450 INFO L130 PetriNetUnfolder]: 1853/10344 cut-off events. [2022-09-20 22:47:46,450 INFO L131 PetriNetUnfolder]: For 121929/122098 co-relation queries the response was YES. [2022-09-20 22:47:46,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48998 conditions, 10344 events. 1853/10344 cut-off events. For 121929/122098 co-relation queries the response was YES. Maximal size of possible extension queue 941. Compared 143986 event pairs, 562 based on Foata normal form. 11/10166 useless extension candidates. Maximal degree in co-relation 48693. Up to 2565 conditions per place. [2022-09-20 22:47:46,820 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 574 selfloop transitions, 135 changer transitions 16/1132 dead transitions. [2022-09-20 22:47:46,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1119 places, 1132 transitions, 20404 flow [2022-09-20 22:47:46,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 22:47:46,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 22:47:46,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4264 transitions. [2022-09-20 22:47:46,822 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8770053475935828 [2022-09-20 22:47:46,822 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4264 transitions. [2022-09-20 22:47:46,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4264 transitions. [2022-09-20 22:47:46,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:46,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4264 transitions. [2022-09-20 22:47:46,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.8235294117647) internal successors, (4264), 17 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:46,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:46,827 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:46,827 INFO L175 Difference]: Start difference. First operand has 1105 places, 1073 transitions, 18162 flow. Second operand 17 states and 4264 transitions. [2022-09-20 22:47:46,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1119 places, 1132 transitions, 20404 flow [2022-09-20 22:47:48,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1117 places, 1132 transitions, 20184 flow, removed 110 selfloop flow, removed 2 redundant places. [2022-09-20 22:47:48,396 INFO L231 Difference]: Finished difference. Result has 1125 places, 1095 transitions, 18822 flow [2022-09-20 22:47:48,396 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=17986, PETRI_DIFFERENCE_MINUEND_PLACES=1101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1073, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=953, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=18822, PETRI_PLACES=1125, PETRI_TRANSITIONS=1095} [2022-09-20 22:47:48,397 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 869 predicate places. [2022-09-20 22:47:48,397 INFO L495 AbstractCegarLoop]: Abstraction has has 1125 places, 1095 transitions, 18822 flow [2022-09-20 22:47:48,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:48,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:48,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:48,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-09-20 22:47:48,397 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:47:48,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:48,398 INFO L85 PathProgramCache]: Analyzing trace with hash -259276146, now seen corresponding path program 17 times [2022-09-20 22:47:48,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:48,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304487133] [2022-09-20 22:47:48,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:48,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:48,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:48,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:48,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304487133] [2022-09-20 22:47:48,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304487133] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:48,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:48,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:47:48,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30924030] [2022-09-20 22:47:48,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:48,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:47:48,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:48,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:47:48,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:47:48,464 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:47:48,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1125 places, 1095 transitions, 18822 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:48,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:48,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:47:48,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:53,830 INFO L130 PetriNetUnfolder]: 1890/10719 cut-off events. [2022-09-20 22:47:53,830 INFO L131 PetriNetUnfolder]: For 129068/129237 co-relation queries the response was YES. [2022-09-20 22:47:54,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50846 conditions, 10719 events. 1890/10719 cut-off events. For 129068/129237 co-relation queries the response was YES. Maximal size of possible extension queue 984. Compared 150682 event pairs, 503 based on Foata normal form. 11/10537 useless extension candidates. Maximal degree in co-relation 50534. Up to 2614 conditions per place. [2022-09-20 22:47:54,192 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 600 selfloop transitions, 129 changer transitions 17/1153 dead transitions. [2022-09-20 22:47:54,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1139 places, 1153 transitions, 21084 flow [2022-09-20 22:47:54,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 22:47:54,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 22:47:54,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4268 transitions. [2022-09-20 22:47:54,195 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8778280542986425 [2022-09-20 22:47:54,195 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4268 transitions. [2022-09-20 22:47:54,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4268 transitions. [2022-09-20 22:47:54,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:54,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4268 transitions. [2022-09-20 22:47:54,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 251.05882352941177) internal successors, (4268), 17 states have internal predecessors, (4268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:54,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:54,200 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:54,200 INFO L175 Difference]: Start difference. First operand has 1125 places, 1095 transitions, 18822 flow. Second operand 17 states and 4268 transitions. [2022-09-20 22:47:54,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1139 places, 1153 transitions, 21084 flow [2022-09-20 22:47:55,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1137 places, 1153 transitions, 20946 flow, removed 69 selfloop flow, removed 2 redundant places. [2022-09-20 22:47:55,781 INFO L231 Difference]: Finished difference. Result has 1143 places, 1116 transitions, 19508 flow [2022-09-20 22:47:55,782 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=18690, PETRI_DIFFERENCE_MINUEND_PLACES=1121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1095, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=981, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=19508, PETRI_PLACES=1143, PETRI_TRANSITIONS=1116} [2022-09-20 22:47:55,782 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 887 predicate places. [2022-09-20 22:47:55,782 INFO L495 AbstractCegarLoop]: Abstraction has has 1143 places, 1116 transitions, 19508 flow [2022-09-20 22:47:55,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:55,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:55,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:55,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-09-20 22:47:55,783 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:47:55,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:55,783 INFO L85 PathProgramCache]: Analyzing trace with hash 407058058, now seen corresponding path program 18 times [2022-09-20 22:47:55,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:55,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128518460] [2022-09-20 22:47:55,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:55,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:55,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:55,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:55,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128518460] [2022-09-20 22:47:55,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128518460] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:55,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:55,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:47:55,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703124111] [2022-09-20 22:47:55,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:55,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:47:55,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:55,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:47:55,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:47:55,857 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:47:55,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1143 places, 1116 transitions, 19508 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:55,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:55,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:47:55,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:48:01,146 INFO L130 PetriNetUnfolder]: 1895/10828 cut-off events. [2022-09-20 22:48:01,146 INFO L131 PetriNetUnfolder]: For 135154/135323 co-relation queries the response was YES. [2022-09-20 22:48:01,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51680 conditions, 10828 events. 1895/10828 cut-off events. For 135154/135323 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 152748 event pairs, 500 based on Foata normal form. 11/10647 useless extension candidates. Maximal degree in co-relation 51363. Up to 2621 conditions per place. [2022-09-20 22:48:01,520 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 597 selfloop transitions, 134 changer transitions 21/1159 dead transitions. [2022-09-20 22:48:01,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1158 places, 1159 transitions, 21454 flow [2022-09-20 22:48:01,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:48:01,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:48:01,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4514 transitions. [2022-09-20 22:48:01,523 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8768453768453769 [2022-09-20 22:48:01,523 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4514 transitions. [2022-09-20 22:48:01,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4514 transitions. [2022-09-20 22:48:01,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:48:01,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4514 transitions. [2022-09-20 22:48:01,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.77777777777777) internal successors, (4514), 18 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:01,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:01,529 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:01,529 INFO L175 Difference]: Start difference. First operand has 1143 places, 1116 transitions, 19508 flow. Second operand 18 states and 4514 transitions. [2022-09-20 22:48:01,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1158 places, 1159 transitions, 21454 flow [2022-09-20 22:48:03,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1155 places, 1159 transitions, 21209 flow, removed 87 selfloop flow, removed 3 redundant places. [2022-09-20 22:48:03,174 INFO L231 Difference]: Finished difference. Result has 1159 places, 1125 transitions, 19803 flow [2022-09-20 22:48:03,175 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=19285, PETRI_DIFFERENCE_MINUEND_PLACES=1138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=988, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=19803, PETRI_PLACES=1159, PETRI_TRANSITIONS=1125} [2022-09-20 22:48:03,175 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 903 predicate places. [2022-09-20 22:48:03,175 INFO L495 AbstractCegarLoop]: Abstraction has has 1159 places, 1125 transitions, 19803 flow [2022-09-20 22:48:03,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:03,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:48:03,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:48:03,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-09-20 22:48:03,176 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:48:03,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:48:03,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1958942834, now seen corresponding path program 19 times [2022-09-20 22:48:03,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:48:03,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819583859] [2022-09-20 22:48:03,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:48:03,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:48:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:48:03,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:48:03,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:48:03,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819583859] [2022-09-20 22:48:03,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819583859] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:48:03,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:48:03,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:48:03,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756490600] [2022-09-20 22:48:03,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:48:03,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:48:03,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:48:03,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:48:03,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:48:03,371 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:48:03,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1159 places, 1125 transitions, 19803 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:03,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:48:03,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:48:03,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:48:08,688 INFO L130 PetriNetUnfolder]: 1898/10932 cut-off events. [2022-09-20 22:48:08,689 INFO L131 PetriNetUnfolder]: For 140702/140871 co-relation queries the response was YES. [2022-09-20 22:48:09,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52035 conditions, 10932 events. 1898/10932 cut-off events. For 140702/140871 co-relation queries the response was YES. Maximal size of possible extension queue 1002. Compared 154155 event pairs, 517 based on Foata normal form. 11/10756 useless extension candidates. Maximal degree in co-relation 51716. Up to 2647 conditions per place. [2022-09-20 22:48:09,097 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 560 selfloop transitions, 183 changer transitions 22/1172 dead transitions. [2022-09-20 22:48:09,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1172 places, 1172 transitions, 21719 flow [2022-09-20 22:48:09,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 22:48:09,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 22:48:09,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4017 transitions. [2022-09-20 22:48:09,099 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8778409090909091 [2022-09-20 22:48:09,099 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4017 transitions. [2022-09-20 22:48:09,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4017 transitions. [2022-09-20 22:48:09,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:48:09,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4017 transitions. [2022-09-20 22:48:09,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 251.0625) internal successors, (4017), 16 states have internal predecessors, (4017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:09,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:09,104 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 286.0) internal successors, (4862), 17 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:09,104 INFO L175 Difference]: Start difference. First operand has 1159 places, 1125 transitions, 19803 flow. Second operand 16 states and 4017 transitions. [2022-09-20 22:48:09,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1172 places, 1172 transitions, 21719 flow [2022-09-20 22:48:10,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1153 places, 1172 transitions, 21539 flow, removed 54 selfloop flow, removed 19 redundant places. [2022-09-20 22:48:10,980 INFO L231 Difference]: Finished difference. Result has 1158 places, 1131 transitions, 20151 flow [2022-09-20 22:48:10,980 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=19627, PETRI_DIFFERENCE_MINUEND_PLACES=1138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=946, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=20151, PETRI_PLACES=1158, PETRI_TRANSITIONS=1131} [2022-09-20 22:48:10,981 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 902 predicate places. [2022-09-20 22:48:10,981 INFO L495 AbstractCegarLoop]: Abstraction has has 1158 places, 1131 transitions, 20151 flow [2022-09-20 22:48:10,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:10,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:48:10,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:48:10,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-09-20 22:48:10,982 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:48:10,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:48:10,982 INFO L85 PathProgramCache]: Analyzing trace with hash 967108274, now seen corresponding path program 20 times [2022-09-20 22:48:10,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:48:10,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953755605] [2022-09-20 22:48:10,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:48:10,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:48:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:48:11,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:48:11,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:48:11,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953755605] [2022-09-20 22:48:11,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953755605] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:48:11,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:48:11,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 22:48:11,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371395837] [2022-09-20 22:48:11,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:48:11,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 22:48:11,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:48:11,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 22:48:11,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:48:11,059 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 286 [2022-09-20 22:48:11,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1158 places, 1131 transitions, 20151 flow. Second operand has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:11,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:48:11,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 286 [2022-09-20 22:48:11,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:48:16,298 INFO L130 PetriNetUnfolder]: 1898/11014 cut-off events. [2022-09-20 22:48:16,298 INFO L131 PetriNetUnfolder]: For 146331/146500 co-relation queries the response was YES. [2022-09-20 22:48:16,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52561 conditions, 11014 events. 1898/11014 cut-off events. For 146331/146500 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 155811 event pairs, 558 based on Foata normal form. 11/10830 useless extension candidates. Maximal degree in co-relation 52255. Up to 2643 conditions per place. [2022-09-20 22:48:16,657 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 586 selfloop transitions, 152 changer transitions 26/1171 dead transitions. [2022-09-20 22:48:16,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1173 places, 1171 transitions, 22017 flow [2022-09-20 22:48:16,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:48:16,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:48:16,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4514 transitions. [2022-09-20 22:48:16,660 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8768453768453769 [2022-09-20 22:48:16,660 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4514 transitions. [2022-09-20 22:48:16,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4514 transitions. [2022-09-20 22:48:16,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:48:16,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4514 transitions. [2022-09-20 22:48:16,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.77777777777777) internal successors, (4514), 18 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:16,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:16,666 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 286.0) internal successors, (5434), 19 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:16,666 INFO L175 Difference]: Start difference. First operand has 1158 places, 1131 transitions, 20151 flow. Second operand 18 states and 4514 transitions. [2022-09-20 22:48:16,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1173 places, 1171 transitions, 22017 flow [2022-09-20 22:48:18,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1168 places, 1171 transitions, 21715 flow, removed 32 selfloop flow, removed 5 redundant places. [2022-09-20 22:48:18,263 INFO L231 Difference]: Finished difference. Result has 1172 places, 1137 transitions, 20340 flow [2022-09-20 22:48:18,263 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=19861, PETRI_DIFFERENCE_MINUEND_PLACES=1151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=982, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=20340, PETRI_PLACES=1172, PETRI_TRANSITIONS=1137} [2022-09-20 22:48:18,264 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 916 predicate places. [2022-09-20 22:48:18,264 INFO L495 AbstractCegarLoop]: Abstraction has has 1172 places, 1137 transitions, 20340 flow [2022-09-20 22:48:18,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.6) internal successors, (2476), 10 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:18,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:48:18,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:48:18,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-09-20 22:48:18,264 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:48:18,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:48:18,265 INFO L85 PathProgramCache]: Analyzing trace with hash -624850748, now seen corresponding path program 1 times [2022-09-20 22:48:18,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:48:18,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332785531] [2022-09-20 22:48:18,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:48:18,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:48:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:48:18,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:48:18,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:48:18,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332785531] [2022-09-20 22:48:18,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332785531] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:48:18,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:48:18,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:48:18,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420284737] [2022-09-20 22:48:18,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:48:18,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:48:18,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:48:18,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:48:18,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:48:18,297 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 286 [2022-09-20 22:48:18,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1172 places, 1137 transitions, 20340 flow. Second operand has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:18,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:48:18,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 286 [2022-09-20 22:48:18,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:48:21,771 INFO L130 PetriNetUnfolder]: 980/8896 cut-off events. [2022-09-20 22:48:21,772 INFO L131 PetriNetUnfolder]: For 106491/107219 co-relation queries the response was YES. [2022-09-20 22:48:22,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37975 conditions, 8896 events. 980/8896 cut-off events. For 106491/107219 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 126709 event pairs, 61 based on Foata normal form. 23/8660 useless extension candidates. Maximal degree in co-relation 37667. Up to 489 conditions per place. [2022-09-20 22:48:22,093 INFO L137 encePairwiseOnDemand]: 278/286 looper letters, 20 selfloop transitions, 4 changer transitions 0/1145 dead transitions. [2022-09-20 22:48:22,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1172 places, 1145 transitions, 20408 flow [2022-09-20 22:48:22,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:48:22,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:48:22,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 811 transitions. [2022-09-20 22:48:22,095 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9452214452214452 [2022-09-20 22:48:22,095 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 811 transitions. [2022-09-20 22:48:22,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 811 transitions. [2022-09-20 22:48:22,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:48:22,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 811 transitions. [2022-09-20 22:48:22,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:22,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 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) [2022-09-20 22:48:22,096 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 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) [2022-09-20 22:48:22,096 INFO L175 Difference]: Start difference. First operand has 1172 places, 1137 transitions, 20340 flow. Second operand 3 states and 811 transitions. [2022-09-20 22:48:22,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1172 places, 1145 transitions, 20408 flow [2022-09-20 22:48:23,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1154 places, 1145 transitions, 20153 flow, removed 54 selfloop flow, removed 18 redundant places. [2022-09-20 22:48:23,466 INFO L231 Difference]: Finished difference. Result has 1156 places, 1141 transitions, 20125 flow [2022-09-20 22:48:23,466 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=20085, PETRI_DIFFERENCE_MINUEND_PLACES=1152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=20125, PETRI_PLACES=1156, PETRI_TRANSITIONS=1141} [2022-09-20 22:48:23,467 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 900 predicate places. [2022-09-20 22:48:23,467 INFO L495 AbstractCegarLoop]: Abstraction has has 1156 places, 1141 transitions, 20125 flow [2022-09-20 22:48:23,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:23,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:48:23,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:48:23,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-09-20 22:48:23,467 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:48:23,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:48:23,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1474437100, now seen corresponding path program 1 times [2022-09-20 22:48:23,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:48:23,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55711591] [2022-09-20 22:48:23,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:48:23,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:48:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:48:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:48:23,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:48:23,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55711591] [2022-09-20 22:48:23,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55711591] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:48:23,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:48:23,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:48:23,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976059462] [2022-09-20 22:48:23,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:48:23,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:48:23,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:48:23,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:48:23,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:48:23,491 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 286 [2022-09-20 22:48:23,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1156 places, 1141 transitions, 20125 flow. Second operand has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:23,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:48:23,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 286 [2022-09-20 22:48:23,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:48:25,449 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([752] L50-29-->L50-30: Formula: (= |v_thread2Thread1of1ForFork0_#t~ite14#1_5| v_~result_10~0_1) InVars {thread2Thread1of1ForFork0_#t~ite14#1=|v_thread2Thread1of1ForFork0_#t~ite14#1_5|} OutVars{~result_10~0=v_~result_10~0_1, thread2Thread1of1ForFork0_#t~ite14#1=|v_thread2Thread1of1ForFork0_#t~ite14#1_5|} AuxVars[] AssignedVars[~result_10~0][296], [Black: 1515#(and (= |thread3Thread1of1ForFork1_#t~ite21#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1) (= (+ (- 1) ~result_10~0) 0)), Black: 1501#(and (= 1 |thread2Thread1of1ForFork0_#t~ite14#1|) (= |thread3Thread1of1ForFork1_#t~ite21#1| 1) (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1)), Black: 1020#(and (= 1 |thread2Thread1of1ForFork0_#t~ite14#1|) (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= (+ (- 1) ~result_11~0) 0)), Black: 1008#(and (= 1 |thread2Thread1of1ForFork0_#t~ite14#1|) (= |thread3Thread1of1ForFork1_#t~ite21#1| 1) (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1)), Black: 504#(and (= 1 |thread2Thread1of1ForFork0_#t~ite14#1|) (= |thread2Thread1of1ForFork0_#t~ite8#1| 1)), 2411#true, Black: 506#(and (= 1 |thread2Thread1of1ForFork0_#t~ite14#1|) (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1)), Black: 2046#(and (<= (+ |thread3Thread1of1ForFork1_#t~ite20#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite13#1|) 0) (<= (+ ~result_11~0 1) 0)), Black: 510#(and (= 1 |thread2Thread1of1ForFork0_#t~ite14#1|) (= |thread3Thread1of1ForFork1_#t~ite21#1| 1) (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1) (= (+ (- 1) ~result_11~0) 0)), Black: 2052#(and (<= (+ |thread3Thread1of1ForFork1_#t~ite20#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite14#1|) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite13#1|) 0) (<= (+ ~result_10~0 1) 0) (<= (+ ~result_11~0 1) 0)), Black: 2036#(and (<= (+ ~result_10~0 1) 0) (<= (+ ~result_11~0 1) 0)), Black: 2040#(and (<= (+ |thread3Thread1of1ForFork1_#t~ite20#1| 1) 0) (<= (+ |thread3Thread1of1ForFork1_#t~ite21#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite13#1|) 0)), Black: 508#(and (= 1 |thread2Thread1of1ForFork0_#t~ite14#1|) (= |thread3Thread1of1ForFork1_#t~ite21#1| 1) (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1)), Black: 514#(and (= 1 |thread2Thread1of1ForFork0_#t~ite14#1|) (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1) (= (+ (- 1) ~result_11~0) 0)), Black: 2048#(and (<= (+ |thread3Thread1of1ForFork1_#t~ite20#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite14#1|) 0) (<= (+ |thread3Thread1of1ForFork1_#t~ite21#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite13#1|) 0) (<= (+ ~result_10~0 1) 0) (<= (+ ~result_11~0 1) 0)), Black: 520#(and (= 1 |thread2Thread1of1ForFork0_#t~ite14#1|) (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= (+ (- 1) ~result_11~0) 0)), Black: 2042#(and (<= (+ |thread3Thread1of1ForFork1_#t~ite20#1| 1) 0) (<= (+ |thread3Thread1of1ForFork1_#t~ite21#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite13#1|) 0) (<= (+ ~result_11~0 1) 0)), Black: 2563#(and (<= (+ |thread3Thread1of1ForFork1_#t~ite20#1| 1) 0) (<= (+ |thread3Thread1of1ForFork1_#t~ite21#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite13#1|) 0)), Black: 2034#(and (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite13#1|) 0) (<= (+ ~result_11~0 1) 0)), Black: 2559#(and (<= (+ ~result_10~0 1) 0) (<= (+ ~result_11~0 1) 0)), Black: 2060#(and (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite14#1|) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite13#1|) 0) (<= (+ ~result_10~0 1) 0) (<= (+ ~result_11~0 1) 0)), Black: 2565#(and (<= (+ |thread3Thread1of1ForFork1_#t~ite20#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite14#1|) 0) (<= (+ |thread3Thread1of1ForFork1_#t~ite21#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite13#1|) 0)), Black: 1543#(<= (+ |thread1Thread1of1ForFork2_#t~ite4#1| 1) 0), 2193#true, Black: 1063#(and (= 1 |thread2Thread1of1ForFork0_#t~ite14#1|) (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= (+ (- 1) ~result_11~0) 0)), 728#true, Black: 1049#(and (= 1 |thread2Thread1of1ForFork0_#t~ite14#1|) (= |thread3Thread1of1ForFork1_#t~ite21#1| 1) (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1)), 1725#true, Black: 2088#(and (<= (+ ~result_10~0 1) 0) (<= (+ ~result_11~0 1) 0)), Black: 2100#(and (<= (+ |thread3Thread1of1ForFork1_#t~ite21#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite13#1|) 0) (<= (+ ~result_10~0 1) 0)), Black: 2096#(and (<= (+ |thread3Thread1of1ForFork1_#t~ite20#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite14#1|) 0) (<= (+ |thread3Thread1of1ForFork1_#t~ite21#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite13#1|) 0)), Black: 2104#(and (<= (+ |thread3Thread1of1ForFork1_#t~ite21#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite13#1|) 0) (<= (+ ~result_10~0 1) 0) (<= (+ ~result_11~0 1) 0)), Black: 2606#(and (<= (+ |thread3Thread1of1ForFork1_#t~ite20#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite14#1|) 0) (<= (+ |thread3Thread1of1ForFork1_#t~ite21#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite13#1|) 0)), Black: 2600#(and (<= (+ ~result_10~0 1) 0) (<= (+ ~result_11~0 1) 0)), Black: 561#(and (= 1 |thread2Thread1of1ForFork0_#t~ite14#1|) (= |thread3Thread1of1ForFork1_#t~ite21#1| 1) (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1) (= (+ (- 1) ~result_11~0) 0) (= (+ (- 1) ~result_10~0) 0)), Black: 542#(and (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1)), Black: 550#(and (= 1 |thread2Thread1of1ForFork0_#t~ite14#1|) (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1)), Black: 564#(and (= |thread3Thread1of1ForFork1_#t~ite21#1| 1) (= 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|thread2Thread1of1ForFork0_#t~ite13#1|) 0)), Black: 2522#(and (<= (+ |thread3Thread1of1ForFork1_#t~ite20#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite14#1|) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite13#1|) 0)), Black: 2518#(and (<= (+ ~result_10~0 1) 0) (<= (+ ~result_11~0 1) 0)), 782#true]) [2022-09-20 22:48:25,450 INFO L383 tUnfolder$Statistics]: this new event has 85 ancestors and is cut-off event [2022-09-20 22:48:25,450 INFO L386 tUnfolder$Statistics]: existing Event has 85 ancestors and is cut-off event [2022-09-20 22:48:25,450 INFO L386 tUnfolder$Statistics]: existing Event has 85 ancestors and is cut-off event [2022-09-20 22:48:25,450 INFO L386 tUnfolder$Statistics]: existing Event has 85 ancestors and is cut-off event [2022-09-20 22:48:26,870 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([812] L56-29-->L56-30: Formula: (= v_~result_11~0_1 |v_thread3Thread1of1ForFork1_#t~ite21#1_5|) InVars 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tUnfolder$Statistics]: existing Event has 85 ancestors and is not cut-off event [2022-09-20 22:48:26,871 INFO L386 tUnfolder$Statistics]: existing Event has 85 ancestors and is not cut-off event [2022-09-20 22:48:26,871 INFO L386 tUnfolder$Statistics]: existing Event has 85 ancestors and is not cut-off event [2022-09-20 22:48:27,568 INFO L381 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([752] L50-29-->L50-30: Formula: (= |v_thread2Thread1of1ForFork0_#t~ite14#1_5| v_~result_10~0_1) InVars {thread2Thread1of1ForFork0_#t~ite14#1=|v_thread2Thread1of1ForFork0_#t~ite14#1_5|} OutVars{~result_10~0=v_~result_10~0_1, thread2Thread1of1ForFork0_#t~ite14#1=|v_thread2Thread1of1ForFork0_#t~ite14#1_5|} AuxVars[] AssignedVars[~result_10~0][296], [Black: 1515#(and (= |thread3Thread1of1ForFork1_#t~ite21#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1) (= (+ (- 1) ~result_10~0) 0)), Black: 1501#(and (= 1 |thread2Thread1of1ForFork0_#t~ite14#1|) (= 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|thread2Thread1of1ForFork0_#t~ite13#1|) 0), Black: 2524#(and (<= (+ |thread3Thread1of1ForFork1_#t~ite20#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite14#1|) 0) (<= (+ |thread3Thread1of1ForFork1_#t~ite21#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite13#1|) 0)), Black: 2522#(and (<= (+ |thread3Thread1of1ForFork1_#t~ite20#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite14#1|) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite13#1|) 0)), Black: 2518#(and (<= (+ ~result_10~0 1) 0) (<= (+ ~result_11~0 1) 0)), 782#true]) [2022-09-20 22:48:27,568 INFO L383 tUnfolder$Statistics]: this new event has 107 ancestors and is cut-off event [2022-09-20 22:48:27,568 INFO L386 tUnfolder$Statistics]: existing Event has 85 ancestors and is cut-off event [2022-09-20 22:48:27,568 INFO L386 tUnfolder$Statistics]: existing Event has 85 ancestors and is cut-off event [2022-09-20 22:48:27,568 INFO L386 tUnfolder$Statistics]: existing Event has 85 ancestors and is cut-off event [2022-09-20 22:48:27,568 INFO L386 tUnfolder$Statistics]: existing Event has 85 ancestors and is cut-off event [2022-09-20 22:48:27,578 INFO L381 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([812] L56-29-->L56-30: Formula: (= v_~result_11~0_1 |v_thread3Thread1of1ForFork1_#t~ite21#1_5|) InVars {thread3Thread1of1ForFork1_#t~ite21#1=|v_thread3Thread1of1ForFork1_#t~ite21#1_5|} OutVars{thread3Thread1of1ForFork1_#t~ite21#1=|v_thread3Thread1of1ForFork1_#t~ite21#1_5|, ~result_11~0=v_~result_11~0_1} AuxVars[] AssignedVars[~result_11~0][212], [Black: 1515#(and (= |thread3Thread1of1ForFork1_#t~ite21#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1) (= (+ (- 1) ~result_10~0) 0)), Black: 1501#(and (= 1 |thread2Thread1of1ForFork0_#t~ite14#1|) (= |thread3Thread1of1ForFork1_#t~ite21#1| 1) (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1)), Black: 1020#(and (= 1 |thread2Thread1of1ForFork0_#t~ite14#1|) (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= (+ 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|thread2Thread1of1ForFork0_#t~ite14#1|) (= |thread3Thread1of1ForFork1_#t~ite21#1| 1) (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1) (= (+ (- 1) ~result_11~0) 0) (= (+ (- 1) ~result_10~0) 0)), Black: 957#(and (= |thread3Thread1of1ForFork1_#t~ite21#1| 1) (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1) (= (+ (- 1) ~result_11~0) 0) (= (+ (- 1) ~result_10~0) 0)), Black: 955#(and (= |thread3Thread1of1ForFork1_#t~ite21#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1) (= (+ (- 1) ~result_10~0) 0)), Black: 457#(and (= 1 |thread2Thread1of1ForFork0_#t~ite14#1|) (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1) (= (+ (- 1) ~result_11~0) 0) (= (+ (- 1) ~result_10~0) 0)), Black: 941#(and (= 1 |thread2Thread1of1ForFork0_#t~ite14#1|) (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1)), Black: 935#(and (= |thread3Thread1of1ForFork1_#t~ite15#1| 1) (= (+ (- 1) ~result_10~0) 0)), Black: 963#(and (= |thread3Thread1of1ForFork1_#t~ite21#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1) (= (+ (- 1) ~result_11~0) 0) (= (+ (- 1) ~result_10~0) 0)), Black: 443#(and (= 1 |thread2Thread1of1ForFork0_#t~ite14#1|) (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1) (= (+ (- 1) ~result_10~0) 0)), Black: 465#(and (= |thread3Thread1of1ForFork1_#t~ite15#1| 1) (= (+ (- 1) ~result_11~0) 0) (= (+ (- 1) ~result_10~0) 0)), Black: 952#(and (= 1 |thread2Thread1of1ForFork0_#t~ite14#1|) (= |thread3Thread1of1ForFork1_#t~ite21#1| 1) (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1) (= (+ (- 1) ~result_11~0) 0) (= (+ (- 1) ~result_10~0) 0)), Black: 459#(and (= |thread3Thread1of1ForFork1_#t~ite21#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1) (= (+ (- 1) ~result_11~0) 0) (= (+ (- 1) ~result_10~0) 0)), Black: 1998#(and (<= (+ |thread3Thread1of1ForFork1_#t~ite20#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite14#1|) 0) (<= (+ |thread3Thread1of1ForFork1_#t~ite21#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite13#1|) 0)), Black: 455#(and (= |thread3Thread1of1ForFork1_#t~ite21#1| 1) (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1) (= (+ (- 1) ~result_11~0) 0) (= (+ (- 1) ~result_10~0) 0)), Black: 943#(and (= 1 |thread2Thread1of1ForFork0_#t~ite14#1|) (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1) (= (+ (- 1) ~result_10~0) 0)), Black: 461#(and (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1) (= (+ (- 1) ~result_11~0) 0) (= (+ (- 1) ~result_10~0) 0)), Black: 445#(and (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1) (= (+ (- 1) ~result_10~0) 0)), 2081#true, Black: 431#(and (= |thread3Thread1of1ForFork1_#t~ite15#1| 1) (= (+ (- 1) ~result_10~0) 0)), Black: 1988#(and (<= (+ |thread3Thread1of1ForFork1_#t~ite20#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite13#1|) 0)), Black: 1992#(and (<= (+ ~result_10~0 1) 0) (<= (+ ~result_11~0 1) 0)), Black: 430#(= (+ (- 1) ~result_10~0) 0), Black: 1996#(and (<= (+ |thread3Thread1of1ForFork1_#t~ite20#1| 1) 0) (<= (+ |thread3Thread1of1ForFork1_#t~ite21#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite13#1|) 0)), Black: 453#(and (= |thread3Thread1of1ForFork1_#t~ite21#1| 1) (= |thread3Thread1of1ForFork1_#t~ite15#1| 1) (= (+ (- 1) ~result_10~0) 0)), Black: 439#(and (= 1 |thread2Thread1of1ForFork0_#t~ite14#1|) (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= (+ (- 1) ~result_10~0) 0)), Black: 441#(and (= |thread2Thread1of1ForFork0_#t~ite8#1| 1) (= (+ (- 1) ~result_10~0) 0)), Black: 1987#(<= (+ 1 |thread2Thread1of1ForFork0_#t~ite13#1|) 0), Black: 2524#(and (<= (+ |thread3Thread1of1ForFork1_#t~ite20#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite14#1|) 0) (<= (+ |thread3Thread1of1ForFork1_#t~ite21#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite13#1|) 0)), Black: 2522#(and (<= (+ |thread3Thread1of1ForFork1_#t~ite20#1| 1) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite14#1|) 0) (<= (+ 1 |thread2Thread1of1ForFork0_#t~ite13#1|) 0)), Black: 2518#(and (<= (+ ~result_10~0 1) 0) (<= (+ ~result_11~0 1) 0)), 782#true]) [2022-09-20 22:48:27,579 INFO L383 tUnfolder$Statistics]: this new event has 107 ancestors and is cut-off event [2022-09-20 22:48:27,579 INFO L386 tUnfolder$Statistics]: existing Event has 85 ancestors and is cut-off event [2022-09-20 22:48:27,579 INFO L386 tUnfolder$Statistics]: existing Event has 85 ancestors and is cut-off event [2022-09-20 22:48:27,579 INFO L386 tUnfolder$Statistics]: existing Event has 85 ancestors and is cut-off event [2022-09-20 22:48:27,579 INFO L386 tUnfolder$Statistics]: existing Event has 85 ancestors and is cut-off event [2022-09-20 22:48:28,231 INFO L130 PetriNetUnfolder]: 1163/11845 cut-off events. [2022-09-20 22:48:28,231 INFO L131 PetriNetUnfolder]: For 128493/129461 co-relation queries the response was YES. [2022-09-20 22:48:28,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46838 conditions, 11845 events. 1163/11845 cut-off events. For 128493/129461 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 174932 event pairs, 54 based on Foata normal form. 52/11568 useless extension candidates. Maximal degree in co-relation 46406. Up to 725 conditions per place. [2022-09-20 22:48:28,634 INFO L137 encePairwiseOnDemand]: 280/286 looper letters, 15 selfloop transitions, 4 changer transitions 0/1148 dead transitions. [2022-09-20 22:48:28,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1158 places, 1148 transitions, 20182 flow [2022-09-20 22:48:28,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:48:28,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:48:28,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 816 transitions. [2022-09-20 22:48:28,635 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.951048951048951 [2022-09-20 22:48:28,635 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 816 transitions. [2022-09-20 22:48:28,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 816 transitions. [2022-09-20 22:48:28,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:48:28,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 816 transitions. [2022-09-20 22:48:28,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:28,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 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) [2022-09-20 22:48:28,637 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 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) [2022-09-20 22:48:28,637 INFO L175 Difference]: Start difference. First operand has 1156 places, 1141 transitions, 20125 flow. Second operand 3 states and 816 transitions. [2022-09-20 22:48:28,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1158 places, 1148 transitions, 20182 flow [2022-09-20 22:48:30,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1157 places, 1148 transitions, 20178 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 22:48:30,138 INFO L231 Difference]: Finished difference. Result has 1159 places, 1143 transitions, 20149 flow [2022-09-20 22:48:30,139 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=20121, PETRI_DIFFERENCE_MINUEND_PLACES=1155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=20149, PETRI_PLACES=1159, PETRI_TRANSITIONS=1143} [2022-09-20 22:48:30,139 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 903 predicate places. [2022-09-20 22:48:30,139 INFO L495 AbstractCegarLoop]: Abstraction has has 1159 places, 1143 transitions, 20149 flow [2022-09-20 22:48:30,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:30,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:48:30,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:48:30,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-09-20 22:48:30,140 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:48:30,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:48:30,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1181363874, now seen corresponding path program 2 times [2022-09-20 22:48:30,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:48:30,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68718162] [2022-09-20 22:48:30,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:48:30,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:48:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:48:30,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:48:30,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:48:30,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68718162] [2022-09-20 22:48:30,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68718162] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:48:30,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:48:30,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:48:30,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186255158] [2022-09-20 22:48:30,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:48:30,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:48:30,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:48:30,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:48:30,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:48:30,158 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 286 [2022-09-20 22:48:30,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1159 places, 1143 transitions, 20149 flow. Second operand has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:30,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:48:30,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 286 [2022-09-20 22:48:30,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:48:34,658 INFO L130 PetriNetUnfolder]: 1138/11660 cut-off events. [2022-09-20 22:48:34,659 INFO L131 PetriNetUnfolder]: For 128236/129164 co-relation queries the response was YES. [2022-09-20 22:48:35,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46513 conditions, 11660 events. 1138/11660 cut-off events. For 128236/129164 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 170465 event pairs, 51 based on Foata normal form. 44/11335 useless extension candidates. Maximal degree in co-relation 46080. Up to 727 conditions per place. [2022-09-20 22:48:35,055 INFO L137 encePairwiseOnDemand]: 282/286 looper letters, 19 selfloop transitions, 2 changer transitions 0/1150 dead transitions. [2022-09-20 22:48:35,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1161 places, 1150 transitions, 20214 flow [2022-09-20 22:48:35,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:48:35,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:48:35,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 816 transitions. [2022-09-20 22:48:35,056 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.951048951048951 [2022-09-20 22:48:35,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 816 transitions. [2022-09-20 22:48:35,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 816 transitions. [2022-09-20 22:48:35,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:48:35,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 816 transitions. [2022-09-20 22:48:35,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:35,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 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) [2022-09-20 22:48:35,057 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 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) [2022-09-20 22:48:35,057 INFO L175 Difference]: Start difference. First operand has 1159 places, 1143 transitions, 20149 flow. Second operand 3 states and 816 transitions. [2022-09-20 22:48:35,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1161 places, 1150 transitions, 20214 flow [2022-09-20 22:48:36,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1159 places, 1150 transitions, 20206 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 22:48:36,730 INFO L231 Difference]: Finished difference. Result has 1161 places, 1145 transitions, 20165 flow [2022-09-20 22:48:36,731 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=20141, PETRI_DIFFERENCE_MINUEND_PLACES=1157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=20165, PETRI_PLACES=1161, PETRI_TRANSITIONS=1145} [2022-09-20 22:48:36,731 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 905 predicate places. [2022-09-20 22:48:36,731 INFO L495 AbstractCegarLoop]: Abstraction has has 1161 places, 1145 transitions, 20165 flow [2022-09-20 22:48:36,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:36,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:48:36,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:48:36,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-09-20 22:48:36,732 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:48:36,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:48:36,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1899012846, now seen corresponding path program 1 times [2022-09-20 22:48:36,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:48:36,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937514248] [2022-09-20 22:48:36,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:48:36,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:48:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:48:36,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:48:36,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:48:36,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937514248] [2022-09-20 22:48:36,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937514248] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:48:36,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:48:36,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:48:36,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993767422] [2022-09-20 22:48:36,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:48:36,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:48:36,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:48:36,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:48:36,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:48:36,758 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 286 [2022-09-20 22:48:36,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1161 places, 1145 transitions, 20165 flow. Second operand has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:36,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:48:36,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 286 [2022-09-20 22:48:36,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:48:40,649 INFO L130 PetriNetUnfolder]: 988/9882 cut-off events. [2022-09-20 22:48:40,650 INFO L131 PetriNetUnfolder]: For 105283/106347 co-relation queries the response was YES. [2022-09-20 22:48:40,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39217 conditions, 9882 events. 988/9882 cut-off events. For 105283/106347 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 138241 event pairs, 51 based on Foata normal form. 53/9596 useless extension candidates. Maximal degree in co-relation 38783. Up to 522 conditions per place. [2022-09-20 22:48:40,979 INFO L137 encePairwiseOnDemand]: 276/286 looper letters, 22 selfloop transitions, 6 changer transitions 2/1153 dead transitions. [2022-09-20 22:48:40,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1163 places, 1153 transitions, 20249 flow [2022-09-20 22:48:40,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:48:40,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:48:40,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 811 transitions. [2022-09-20 22:48:40,981 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9452214452214452 [2022-09-20 22:48:40,981 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 811 transitions. [2022-09-20 22:48:40,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 811 transitions. [2022-09-20 22:48:40,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:48:40,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 811 transitions. [2022-09-20 22:48:40,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:40,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 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) [2022-09-20 22:48:40,982 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 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) [2022-09-20 22:48:40,982 INFO L175 Difference]: Start difference. First operand has 1161 places, 1145 transitions, 20165 flow. Second operand 3 states and 811 transitions. [2022-09-20 22:48:40,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1163 places, 1153 transitions, 20249 flow [2022-09-20 22:48:42,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1162 places, 1153 transitions, 20243 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-09-20 22:48:42,340 INFO L231 Difference]: Finished difference. Result has 1164 places, 1147 transitions, 20207 flow [2022-09-20 22:48:42,341 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=20159, PETRI_DIFFERENCE_MINUEND_PLACES=1160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=20207, PETRI_PLACES=1164, PETRI_TRANSITIONS=1147} [2022-09-20 22:48:42,341 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 908 predicate places. [2022-09-20 22:48:42,341 INFO L495 AbstractCegarLoop]: Abstraction has has 1164 places, 1147 transitions, 20207 flow [2022-09-20 22:48:42,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:42,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:48:42,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:48:42,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-09-20 22:48:42,341 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:48:42,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:48:42,342 INFO L85 PathProgramCache]: Analyzing trace with hash -437936954, now seen corresponding path program 1 times [2022-09-20 22:48:42,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:48:42,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080070352] [2022-09-20 22:48:42,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:48:42,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:48:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:48:42,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:48:42,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:48:42,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080070352] [2022-09-20 22:48:42,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080070352] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:48:42,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:48:42,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-20 22:48:42,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936111064] [2022-09-20 22:48:42,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:48:42,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-09-20 22:48:42,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:48:42,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-09-20 22:48:42,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-09-20 22:48:42,442 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 286 [2022-09-20 22:48:42,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1164 places, 1147 transitions, 20207 flow. Second operand has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:42,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:48:42,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 286 [2022-09-20 22:48:42,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:48:58,274 INFO L130 PetriNetUnfolder]: 8764/27017 cut-off events. [2022-09-20 22:48:58,274 INFO L131 PetriNetUnfolder]: For 262106/262548 co-relation queries the response was YES. [2022-09-20 22:49:00,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112151 conditions, 27017 events. 8764/27017 cut-off events. For 262106/262548 co-relation queries the response was YES. Maximal size of possible extension queue 1978. Compared 367521 event pairs, 1948 based on Foata normal form. 63/25775 useless extension candidates. Maximal degree in co-relation 111596. Up to 12063 conditions per place. [2022-09-20 22:49:00,122 INFO L137 encePairwiseOnDemand]: 263/286 looper letters, 770 selfloop transitions, 239 changer transitions 28/1442 dead transitions. [2022-09-20 22:49:00,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1197 places, 1442 transitions, 24777 flow [2022-09-20 22:49:00,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-09-20 22:49:00,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-09-20 22:49:00,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 8197 transitions. [2022-09-20 22:49:00,125 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.84296585767174 [2022-09-20 22:49:00,125 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 8197 transitions. [2022-09-20 22:49:00,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 8197 transitions. [2022-09-20 22:49:00,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:49:00,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 8197 transitions. [2022-09-20 22:49:00,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 241.08823529411765) internal successors, (8197), 34 states have internal predecessors, (8197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:00,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 286.0) internal successors, (10010), 35 states have internal predecessors, (10010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:00,136 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 286.0) internal successors, (10010), 35 states have internal predecessors, (10010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:00,136 INFO L175 Difference]: Start difference. First operand has 1164 places, 1147 transitions, 20207 flow. Second operand 34 states and 8197 transitions. [2022-09-20 22:49:00,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1197 places, 1442 transitions, 24777 flow [2022-09-20 22:49:04,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1195 places, 1442 transitions, 24757 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-09-20 22:49:04,065 INFO L231 Difference]: Finished difference. Result has 1225 places, 1282 transitions, 22341 flow [2022-09-20 22:49:04,066 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=20187, PETRI_DIFFERENCE_MINUEND_PLACES=1162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1018, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=22341, PETRI_PLACES=1225, PETRI_TRANSITIONS=1282} [2022-09-20 22:49:04,066 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 969 predicate places. [2022-09-20 22:49:04,066 INFO L495 AbstractCegarLoop]: Abstraction has has 1225 places, 1282 transitions, 22341 flow [2022-09-20 22:49:04,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:04,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:49:04,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:49:04,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-09-20 22:49:04,067 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:49:04,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:49:04,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1733696456, now seen corresponding path program 1 times [2022-09-20 22:49:04,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:49:04,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693900837] [2022-09-20 22:49:04,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:49:04,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:49:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:49:04,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:49:04,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:49:04,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693900837] [2022-09-20 22:49:04,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693900837] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:49:04,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:49:04,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-20 22:49:04,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590729741] [2022-09-20 22:49:04,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:49:04,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-09-20 22:49:04,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:49:04,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-09-20 22:49:04,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-09-20 22:49:04,191 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 286 [2022-09-20 22:49:04,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1225 places, 1282 transitions, 22341 flow. Second operand has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:04,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:49:04,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 286 [2022-09-20 22:49:04,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:49:24,399 INFO L130 PetriNetUnfolder]: 9016/27976 cut-off events. [2022-09-20 22:49:24,399 INFO L131 PetriNetUnfolder]: For 368572/368988 co-relation queries the response was YES. [2022-09-20 22:49:27,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147059 conditions, 27976 events. 9016/27976 cut-off events. For 368572/368988 co-relation queries the response was YES. Maximal size of possible extension queue 2051. Compared 382954 event pairs, 4869 based on Foata normal form. 61/26681 useless extension candidates. Maximal degree in co-relation 146718. Up to 16682 conditions per place. [2022-09-20 22:49:27,388 INFO L137 encePairwiseOnDemand]: 265/286 looper letters, 977 selfloop transitions, 57 changer transitions 23/1462 dead transitions. [2022-09-20 22:49:27,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1252 places, 1462 transitions, 26653 flow [2022-09-20 22:49:27,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-09-20 22:49:27,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-09-20 22:49:27,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7187 transitions. [2022-09-20 22:49:27,584 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8376456876456877 [2022-09-20 22:49:27,585 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7187 transitions. [2022-09-20 22:49:27,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7187 transitions. [2022-09-20 22:49:27,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:49:27,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7187 transitions. [2022-09-20 22:49:27,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 239.56666666666666) internal successors, (7187), 30 states have internal predecessors, (7187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:27,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 286.0) internal successors, (8866), 31 states have internal predecessors, (8866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:27,595 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 286.0) internal successors, (8866), 31 states have internal predecessors, (8866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:27,595 INFO L175 Difference]: Start difference. First operand has 1225 places, 1282 transitions, 22341 flow. Second operand 30 states and 7187 transitions. [2022-09-20 22:49:27,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1252 places, 1462 transitions, 26653 flow [2022-09-20 22:49:35,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1250 places, 1462 transitions, 26087 flow, removed 283 selfloop flow, removed 2 redundant places. [2022-09-20 22:49:35,334 INFO L231 Difference]: Finished difference. Result has 1268 places, 1340 transitions, 22816 flow [2022-09-20 22:49:35,336 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=21777, PETRI_DIFFERENCE_MINUEND_PLACES=1221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=22816, PETRI_PLACES=1268, PETRI_TRANSITIONS=1340} [2022-09-20 22:49:35,336 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 1012 predicate places. [2022-09-20 22:49:35,336 INFO L495 AbstractCegarLoop]: Abstraction has has 1268 places, 1340 transitions, 22816 flow [2022-09-20 22:49:35,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:35,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:49:35,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:49:35,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-09-20 22:49:35,337 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:49:35,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:49:35,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1696195596, now seen corresponding path program 2 times [2022-09-20 22:49:35,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:49:35,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869089707] [2022-09-20 22:49:35,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:49:35,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:49:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:49:35,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:49:35,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:49:35,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869089707] [2022-09-20 22:49:35,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869089707] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:49:35,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:49:35,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-20 22:49:35,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748751334] [2022-09-20 22:49:35,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:49:35,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-09-20 22:49:35,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:49:35,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-09-20 22:49:35,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-09-20 22:49:35,448 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 286 [2022-09-20 22:49:35,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1268 places, 1340 transitions, 22816 flow. Second operand has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:35,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:49:35,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 286 [2022-09-20 22:49:35,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:49:57,856 INFO L130 PetriNetUnfolder]: 10326/30963 cut-off events. [2022-09-20 22:49:57,856 INFO L131 PetriNetUnfolder]: For 499855/500287 co-relation queries the response was YES. [2022-09-20 22:50:01,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181003 conditions, 30963 events. 10326/30963 cut-off events. For 499855/500287 co-relation queries the response was YES. Maximal size of possible extension queue 2168. Compared 419955 event pairs, 5237 based on Foata normal form. 57/29620 useless extension candidates. Maximal degree in co-relation 180645. Up to 17613 conditions per place. [2022-09-20 22:50:01,468 INFO L137 encePairwiseOnDemand]: 265/286 looper letters, 1047 selfloop transitions, 83 changer transitions 42/1577 dead transitions. [2022-09-20 22:50:01,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1307 places, 1577 transitions, 28417 flow [2022-09-20 22:50:01,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-09-20 22:50:01,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-09-20 22:50:01,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 10031 transitions. [2022-09-20 22:50:01,472 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.835081585081585 [2022-09-20 22:50:01,472 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 10031 transitions. [2022-09-20 22:50:01,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 10031 transitions. [2022-09-20 22:50:01,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:50:01,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 10031 transitions. [2022-09-20 22:50:01,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 238.83333333333334) internal successors, (10031), 42 states have internal predecessors, (10031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:01,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 286.0) internal successors, (12298), 43 states have internal predecessors, (12298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:01,484 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 286.0) internal successors, (12298), 43 states have internal predecessors, (12298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:01,484 INFO L175 Difference]: Start difference. First operand has 1268 places, 1340 transitions, 22816 flow. Second operand 42 states and 10031 transitions. [2022-09-20 22:50:01,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1307 places, 1577 transitions, 28417 flow [2022-09-20 22:50:15,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1305 places, 1577 transitions, 27411 flow, removed 503 selfloop flow, removed 2 redundant places. [2022-09-20 22:50:15,036 INFO L231 Difference]: Finished difference. Result has 1339 places, 1430 transitions, 23805 flow [2022-09-20 22:50:15,037 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=22206, PETRI_DIFFERENCE_MINUEND_PLACES=1264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=23805, PETRI_PLACES=1339, PETRI_TRANSITIONS=1430} [2022-09-20 22:50:15,037 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 1083 predicate places. [2022-09-20 22:50:15,037 INFO L495 AbstractCegarLoop]: Abstraction has has 1339 places, 1430 transitions, 23805 flow [2022-09-20 22:50:15,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:15,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:50:15,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:50:15,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-09-20 22:50:15,038 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:50:15,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:50:15,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1624426776, now seen corresponding path program 3 times [2022-09-20 22:50:15,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:50:15,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800222869] [2022-09-20 22:50:15,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:50:15,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:50:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:50:15,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:50:15,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:50:15,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800222869] [2022-09-20 22:50:15,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800222869] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:50:15,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:50:15,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-20 22:50:15,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698773669] [2022-09-20 22:50:15,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:50:15,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-09-20 22:50:15,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:50:15,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-09-20 22:50:15,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-09-20 22:50:15,137 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 286 [2022-09-20 22:50:15,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1339 places, 1430 transitions, 23805 flow. Second operand has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:15,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:50:15,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 286 [2022-09-20 22:50:15,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:50:41,089 INFO L130 PetriNetUnfolder]: 10534/31937 cut-off events. [2022-09-20 22:50:41,089 INFO L131 PetriNetUnfolder]: For 632658/633104 co-relation queries the response was YES. [2022-09-20 22:50:45,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196154 conditions, 31937 events. 10534/31937 cut-off events. For 632658/633104 co-relation queries the response was YES. Maximal size of possible extension queue 2224. Compared 436248 event pairs, 5271 based on Foata normal form. 82/30668 useless extension candidates. Maximal degree in co-relation 195763. Up to 17495 conditions per place. [2022-09-20 22:50:46,045 INFO L137 encePairwiseOnDemand]: 265/286 looper letters, 1111 selfloop transitions, 160 changer transitions 62/1738 dead transitions. [2022-09-20 22:50:46,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1394 places, 1738 transitions, 30964 flow [2022-09-20 22:50:46,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-09-20 22:50:46,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-09-20 22:50:46,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 13830 transitions. [2022-09-20 22:50:46,052 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8337352302869544 [2022-09-20 22:50:46,052 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 13830 transitions. [2022-09-20 22:50:46,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 13830 transitions. [2022-09-20 22:50:46,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:50:46,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 13830 transitions. [2022-09-20 22:50:46,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 238.44827586206895) internal successors, (13830), 58 states have internal predecessors, (13830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:46,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 286.0) internal successors, (16874), 59 states have internal predecessors, (16874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:46,075 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 286.0) internal successors, (16874), 59 states have internal predecessors, (16874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:50:46,076 INFO L175 Difference]: Start difference. First operand has 1339 places, 1430 transitions, 23805 flow. Second operand 58 states and 13830 transitions. [2022-09-20 22:50:46,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1394 places, 1738 transitions, 30964 flow [2022-09-20 22:51:05,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1392 places, 1738 transitions, 30048 flow, removed 458 selfloop flow, removed 2 redundant places. [2022-09-20 22:51:05,408 INFO L231 Difference]: Finished difference. Result has 1441 places, 1513 transitions, 25035 flow [2022-09-20 22:51:05,409 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=23065, PETRI_DIFFERENCE_MINUEND_PLACES=1335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=25035, PETRI_PLACES=1441, PETRI_TRANSITIONS=1513} [2022-09-20 22:51:05,410 INFO L287 CegarLoopForPetriNet]: 256 programPoint places, 1185 predicate places. [2022-09-20 22:51:05,410 INFO L495 AbstractCegarLoop]: Abstraction has has 1441 places, 1513 transitions, 25035 flow [2022-09-20 22:51:05,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:51:05,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:51:05,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:51:05,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-09-20 22:51:05,411 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:51:05,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:51:05,411 INFO L85 PathProgramCache]: Analyzing trace with hash -540951756, now seen corresponding path program 4 times [2022-09-20 22:51:05,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:51:05,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691272168] [2022-09-20 22:51:05,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:51:05,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:51:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:51:05,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:51:05,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:51:05,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691272168] [2022-09-20 22:51:05,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691272168] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:51:05,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:51:05,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-20 22:51:05,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103362793] [2022-09-20 22:51:05,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:51:05,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-09-20 22:51:05,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:51:05,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-09-20 22:51:05,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-09-20 22:51:05,519 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 286 [2022-09-20 22:51:05,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1441 places, 1513 transitions, 25035 flow. Second operand has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:51:05,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:51:05,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 286 [2022-09-20 22:51:05,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand